Update debian package

Change in the Log about the address use for the UE.

.gitignore

@@ -9,30 +9,41 @@
 .libs
 
 # generated files
+lib/freeDiameter-*/build-aux/*
+lib/freeDiameter-*/config.status
+lib/freeDiameter-*/m4/*.m4
+lib/freeDiameter-*/!m4/ax_*.m4
 lib/freeDiameter-*/libfdcore/fdd.tab.[chy]
 lib/freeDiameter-*/libfdcore/lex.fdd.[cl]
 lib/freeDiameter-*/include/freeDiameter/version.h
-lib/freeDiameter-*/include/freeDiameter/config.h.in
+lib/freeDiameter-*/include/freeDiameter/config.h.in*
+lib/freeDiameter-*/include/freeDiameter/config.h
 lib/freeDiameter-*/include/freeDiameter/freeDiameter-host.h
-lib/core/include/core.h
 support/systemd/nextepc-*.service
 support/logrotate/nextepc
 
 # autotools
 stamp-h1
 config.h
-config.in
-config.nice
+lib/base/nextepc-config.h
+lib/base/nextepc-config.h.in*
 config.log
+config.status
 configure
 aclocal.m4
-config.status
 libtool
 autom4te.cache
-build-aux
+build/*
+!build/git-version-gen
+!build/osc-upload.sh
+!build/dput-upload.sh
 Makefile
 Makefile.in
-m4
+m4/*.m4
+!m4/ax_*.m4
+
+.tarball-version
+.version
 
 # autotest
 test/package.m4
@@ -42,9 +53,10 @@ test/testsuite.dir/
 test/testsuite.log
 
 # executables
-lib/core/test/testcore
+test/testunit
+test/testsimple
+test/testcomplex
 test/testvolte
-test/testepc
 nextepc-mmed
 nextepc-pcrfd
 nextepc-pgwd
@@ -52,21 +64,6 @@ nextepc-sgwd
 nextepc-epcd
 nextepc-hssd
 
-# debian
-debian/*.debhelper.log
-debian/*.debhelper
-debian/*.substvars
-debian/tmp
-debian/files
-debian/autoreconf.before
-debian/autoreconf.after
-debian/nextepc-core
-debian/nextepc-mme
-debian/nextepc-sgw
-debian/nextepc-pgw
-debian/nextepc-pcrf
-debian/nextepc-hss
-
 # webui
 webui/.next/
 webui/node_modules/

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "lib/ogslib"]
+	path = lib/ogslib
+	url = https://github.com/open5gs/ogslib

Makefile.am

@@ -1,6 +1,22 @@
-## Process this file with automake to produce Makefile.in
+# Copyright (C) 2019 by Sukchan Lee <acetcom@gmail.com>
+
+# This file is part of Open5GS.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 ACLOCAL_AMFLAGS = -I m4
+EXTRA_DIST = build/git-version-gen .version README.md LICENSE
 
 SUBDIRS = lib src support test
 
@@ -25,8 +41,9 @@ dist_nextepc_epcd_SOURCES = main.c
 nextepc_epcd_LDADD = $(top_srcdir)/src/libepc.la
 
 AM_CPPFLAGS = \
-    -I$(top_srcdir)/lib/core/include \
-    -I$(top_srcdir)/src/app \
+	@OGSCORE_CFLAGS@ \
+    -I$(top_srcdir)/lib \
+    -I$(top_srcdir)/src \
 	$(NULL)
 
 install-data-hook:
@@ -38,14 +55,8 @@ install-data-hook:
 	$(MKDIR_P) $(DESTDIR)/$(localstatedir)/run/nextepc-hssd
 	$(MKDIR_P) $(DESTDIR)/$(localstatedir)/run/nextepc-epcd
 
-CLEANFILES = -R data debian/test
-DISTCLEANFILES = $(DIST_ARCHIVES)
-MAINTAINERCLEANFILES = \
-    configure config.in \
-    aclocal.m4 m4/ltsugar.m4 m4/libtool.m4 m4/ltversion.m4 \
-    m4/lt~obsolete.m4 m4/ltoptions.m4 \
-    build-aux/ar-lib build-aux/config.guess build-aux/depcomp \
-	build-aux/ltmain.sh build-aux/test-driver build-aux/compile \
-	build-aux/config.sub build-aux/missing build-aux/install-sh \
-    Makefile.in
-MOSTLYCLEANFILES = core *.stackdump
+BUILT_SOURCES = $(top_srcdir)/.version
+$(top_srcdir)/.version:
+	echo $(VERSION) > $@-t && mv $@-t $@
+dist-hook:
+	echo $(VERSION) > $(distdir)/.tarball-version

README.md

@@ -1,445 +1,26 @@
-What's NextEPC
-================
+## Documentation
 
-NextEPC is a C-language Open Source implementation of the 3GPP Evolved Packet Core, i.e. the core network of an LTE network.
+If you don't understand something about NextEPC, the [https://open5gs.org/nextepc/docs/](https://open5gs.org/nextepc/docs/) is a great place to look for answers.
 
-NextEPC provides the MME (Mobility Management Engine), which terminates the S1 interfaces from the eNodeBs cells in the cellular network, and interfaces via S11 to the SGW as well as via S6a to the HSS.
+## Support
 
-NextEPC provides the SGW (Serving Gateway) which is situated between the MME and PGW.  It implements the S11 interface to the MME, and the S5 interface to the PGW.
+Problem with NextEPC can be filed as [issues](https://github.com/open5gs/nextepc/issues) in this repository. 
 
-NextEPC provides the PGW or PDN-GW (Packet Data Network Gateway) element of the EPC, i.e. the gateway between the EPC and the external packet data network, such as the public Internet.  It implements the S5 interface towards the S-GW, the SGi interface towards the Internet, and the S7 interface towards the PCRF.
+Discussions related to this project are happening on the [nextepc@lists.osmocom.org](mailto:nextepc@lists.osmocom.org) mailing list, please see <https://lists.osmocom.org/mailman/listinfo/nextepc> for subscription options and the list archive.
 
-NextEPC provides the HSS (Home Subscriber Server) element of the EPC, i.e. the central database of mobile network subscribers, with their IMSI, MSISDN, cryptographic key materials, service subscription information, etc.  It implements the S6a interface towards the MME using the DIAMETER protocol.
+Voice and text chat available in NextEPC's [Discord](https://discordapp.com/) workspace. Use [this link](https://discord.gg/GreNkuc) to get started.
 
-NextEPC contains the PCRF (Policy and Charging Rules Function), which controls the service quality (QoS) of individual connections and how to account/charge related traffic.  It implements the Gx interface towards the PGW using the DIAMETER protocol.
+## Contributing
 
-Installation 
-============
+NextEPC is a pure/classic FOSS project, open to contributions from anyone.
 
-This post will guide you on how to get installed **NextEPC** with your environment. To date, NextEPC has been tested on GNU/Linux distributions(Debian, Ubuntu, CentOS, Fedora), FreeBSD, and Mac OS X.
+[Pull requests](https://github.com/open5gs/nextepc/pulls) are always welcome, and I appreciates any help the community can give to help make NextEPC better.
 
+Do you want to be a committer? Please [send me an email](mailto:acetcom@gmail.com). You will be added as a committer to this project. However, if someone consistently causes difficulties with these source repositories due to poor behavior or other serious problems then commit access may be revoked.
 
+## License
 
-## Ubuntu
+NextEPC source files are made available under the terms of the GNU Affero General Public License (GNU AGPLv3).
 
-To get the latest Ubuntu version, please visit the official Ubuntu website: [https://www.ubuntu.com/download/](https://www.ubuntu.com/download/). 
+When you contribute code for NextEPC, the same license applies.
 
-* ### MME, SGW, PGW, HSS, and PCRF
-
-The NextEPC package is available on the recent versions of Ubuntu.
-
-```bash
-sudo apt-get update
-sudo apt-get -y install software-properties-common
-sudo add-apt-repository ppa:acetcom/nextepc
-sudo apt-get update
-sudo apt-get -y install nextepc
-```
-This will create a virtual network interface named as *pgwtun*. It is automatically removed by uninstalling NextEPC.
-
-```markdown
-ifconfig pgwtun
-pgwtun    Link encap:UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00  
-          inet addr:45.45.0.1  P-t-P:45.45.0.1  Mask:255.255.0.0
-          inet6 addr: fe80::50f6:182c:5aa3:16bb/64 Scope:Link
-          inet6 addr: cafe::1/64 Scope:Global
-          ...
-```
-
-The NextEPC service is registered in `systemd` environment, and is started automatically during the installation phase. The service names are *nextepc-mmed*, *nextepc-sgwd*, *nextepc-pgwd*, *nextepc-hssd*, and *nextepc-pcrfd*. You can use the `systemctl` command to control specific services.
-
-```bash
-sudo systemctl status nextepc-mmed (Check the service status)
-sudo systemctl stop nextepc-mmed (Stop the service)
-sudo systemctl disable nextepc-mmed (Will not be started after rebooting)
-sudo systemctl enable nextepc-mmed (Will be started after rebooting)
-sudo systemctl start nextepc-mmed (Start the service)
-sudo systemctl restart nextepc-mmed (Stop and start)
-```
-
-
-* ### Web User Interface
-
-The LTE user subcription information of NextEPC is stored and maintained by [Mongo DB](https://www.mongodb.com/). To manage the subscriber information, [Mongo DB client](https://docs.mongodb.com/ecosystem/tools/) is required, and this client can connect to the DB URI [_mongodb://localhost/nextepc_]. 
-
-NextEPC provides an alternative management interface for customers to manage their subscriber information in an easy way, that is **Web User Interface**. The following shows how to install the Web UI of NextEPC.
-
-```bash
-sudo apt-get -y install curl
-curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash -
-curl -sL http://nextepc.org/static/webui/install | sudo -E bash -
-```
-
-The service name is *nextepc-webui*, and it will be running on _http://localhost:3000_.
-
-```bash
-sudo systemctl start nextepc-webui
-```
-
-
-
-* ### Uninstall NextEPC
-
-```bash
-curl -sL http://nextepc.org/static/webui/uninstall | sudo -E bash -
-sudo apt-get purge nextepc*
-```
-
-You may need to remove manually /var/log/nextepc unless it is empty.
-```bash
-sudo rm -Rf /var/log/nextepc
-```
-
-
-## CentOS, Fedora, FreeBSD, and Mac OS X
-
-For these OS, you should build NextEPC from the code. First clone this [repository](https://github.com/acetcom/nextepc.git) and then follow instructions described in the [documentation](http://nextepc.org/docs/). 
-
-* ### [CentOS](http://nextepc.org/docs/build/1-centos)
-* ### [Fedora](http://nextepc.org/docs/build/2-fedora)
-* ### [FreeBSD](http://nextepc.org/docs/build/3-freebsd)
-* ### [Mac OS X](http://nextepc.org/docs/build/4-macosx)
-
-Build 
-=====
-
-Since NextEPC is an open source project, you can build and use this program directly from source code. If you have already installed it with a package manager, or are not interested in learning the source code, you can skip this guide and proceed to the next [configuration guide](http://nextepc.org/guides/3-configuration). 
-
-Note that this guide is based on Ubuntu 16.04.3(Zenial) Distribution.
-
-## Prerequisites
-
-NextEPC requires MongoDB and TUN device. If you have previously installed NextEPC according to the [Installation Guide](http://nextepc.org/guides/1-installation), they was configured at that time. So, you can skip this step.
-
-Install Mongo DB with Package Manager.
-```bash
-sudo apt-get -y install mongodb
-sudo systemctl start mongodb (if '/usr/bin/mongod' is not running)
-```
-
-To run NextEPC with least privilege, TUN device permission should be a `crw-rw-rw-`(666). Otherwise, you need to run nextepc daemon with root privilege. If the permission is not `crw-rw-rw-`(666), you may need to install `udev` package.  Nevertheless, if the permission do not change , you can run nextepc with root privileges or change the permission using `chmod 666 /dev/net/tun`.
-
-```bash
-ls -al /dev/net/tun
-crw-rw---- 1 root 28 10, 200 Feb 11 05:13 /dev/net/tun
-sudo apt-get install udev
-sudo systemctl start systemd-udevd (if '/lib/systemd/systemd-udevd' is not running)
-```
-
-Write the configuration file for the TUN deivce.
-```bash
-sudo sh -c "cat << EOF > /etc/systemd/network/99-nextepc.netdev
-[NetDev]
-Name=pgwtun
-Kind=tun
-EOF"
-```
-
-Craete the TUN device. Interface name will be `pgwtun`.
-```
-sudo systemctl enable systemd-networkd
-sudo systemctl restart systemd-networkd
-
-sudo apt-get -y install net-tools
-ifconfig pgwtun
-```
-
-Then, you need to check *IPv6 Kernel Configuration*. Although you can skip this process, we recommend that you set this up to support IPv6-enabled UE.
-
-```bash
-sysctl -n net.ipv6.conf.pgwtun.disable_ipv6
-
-(if the output is 0 and IPv6 is enabled, skip the followings)
-sudo sh -c "echo 'net.ipv6.conf.pgwtun.disable_ipv6=0' > /etc/sysctl.d/30-nextepc.conf"
-sudo sysctl -p /etc/sysctl.d/30-nextepc.conf
-```
-
-You are now ready to set the IP address on TUN device. If IPv6 is disabled for TUN device, please remove `Address=cafe::1/64` from below.
-
-```bash
-sudo sh -c "cat << EOF > /etc/systemd/network/99-nextepc.network
-[Match]
-Name=pgwtun
-[Network]
-Address=45.45.0.1/16
-Address=cafe::1/64
-EOF"
-```
-
-Check the TUN(pgwtun) device again.
-```
-sudo systemctl restart systemd-networkd
-ifconfig pgwtun
-```
-
-
-## MME, SGW, PGW, HSS, and PCRF
-
-Install the depedencies for building the source
-```bash
-sudo apt-get -y install autoconf libtool gcc pkg-config git flex bison libsctp-dev libgnutls28-dev libgcrypt-dev libssl-dev libmongoc-dev libbson-dev libyaml-dev
-```
-
-Git clone and compile
-```bash
-acetcom@nextepc:~$ git clone https://github.com/acetcom/nextepc
-ccetcom@nextepc:~$ cd nextepc
-acetcom@nextepc:~/nextepc$ autoreconf -iv
-acetcom@nextepc:~/nextepc$ ./configure --prefix=`pwd`/install
-acetcom@nextepc:~/nextepc$ make -j `nproc`
-acetcom@nextepc:~/nextepc$ make install
-```
-
-We provide a program that checks whether the installation is correct. After running the wireshark, select `loopback` interface, filter `s1ap || diameter || gtpv2 || gtp` and run `./test/testepc`. You can see the virtually created packets. [[testepc.pcapng]](http://nextepc.org/static/pcapng/testepc.pcapng)
-
-Note that you should stop all nextepc daemons before running test program if you have already installed it with a package manage.
-```bash
-(if nextepc-daemons are running)
-sudo systemctl stop nextepc-mmed
-sudo systemctl stop nextepc-sgwd
-sudo systemctl stop nextepc-pgwd
-sudo systemctl stop nextepc-hssd
-sudo systemctl stop nextepc-pcrfd
-
-acetcom@nextepc:~/nextepc$ ./test/testepc
-```
-
-It is a convenient tool called `nextepc-epcd` for developers. This daemon includes both *MME*, *SGW*, *PGW*, *HSS*, and *PCRF*. So, instead of running all 5 daemons, you can just run `nextepc-epcd` in your development environment.
-
-```bash
-acetcom@nextepc:~/nextepc$ ./nextepc-epcd
-NextEPC daemon v0.3.3 - Feb 11 2018 07:19:59
-
-  PID[3720] : '/home/acetcom/nextepc/install/var/run/nextepc-epcd/pid'
-  File Logging : '/home/acetcom/nextepc/install/var/log/nextepc/nextepc.log'
-  MongoDB URI : 'mongodb://localhost/nextepc'
-  Configuration : '/home/acetcom/nextepc/install/etc/nextepc/nextepc.conf'
-[02/11 07:26:42.001] PCRF try to initialize
-...
-```
-
-When you run `nextepc-epcd`, all logs for MME, SGW, PGW, PCRF, and HSS are written to `nextepc.log`, and all settings are managed in one place for `nextepc.conf`. You can find the log/conf path at the beginning of running screen.
-
-Sometimes, you may want to use newly updated source code.
-```bash
-(Control-C kill nextepc-epcd)
-acetcom@nextepc:~/nextepc$ make maintainer-clean
-acetcom@nextepc:~/nextepc$ rm -rf ./install
-acetcom@nextepc:~/nextepc$ git pull
-acetcom@nextepc:~/nextepc$ autoreconf -iv
-acetcom@nextepc:~/nextepc$ ./configure --prefix=`pwd`/install
-acetcom@nextepc:~/nextepc$ make -j `nproc`
-acetcom@nextepc:~/nextepc$ make install
-acetcom@nextepc:~/nextepc$ ./nextepc-epcd
-```
-
-## Web User Interface
-
-To get the latest [Node.js](https://nodejs.org/) and [NPM](https://www.npmjs.com/), please visit the official Node.js website:
-[https://nodesjs.org/en/download/](https://nodesjs.org/en/download/).
-
-Or, you can install [Node.js](https://nodejs.org/) and [NPM](https://www.npmjs.com/) with a package manager.
-
-```bash
-sudo apt-get -y install curl
-curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash -
-sudo apt-get -y install nodejs
-```
-
-Install the dependencies to run WebUI
-
-```bash
-acetcom@nextepc:~/nextepc$ cd webui
-acetcom@nextepc:~/nextepc/webui$ npm install
-```
-
-Running WebUI
-
-```bash
-acetcom@nextepc:~/nextepc/webui$ npm run dev
-```
-
-Now the web server is running on _http://localhost:3000_.
-
-
-Configuraiton 
-=============
-
-In LTE, there are tons of configurable parameters. This page will guide you to set essential parameters up. The configuration consists of three parts: IP network connectivity, LTE network settings and Subscribers registering.
-
-## 1. IP Connectivity between Network Entities
-
-The minimum requirement of having IP connectvity is to modify the configuration files of MME and SGW. Once NextEPC has been installed, you can find [YAML](http://yaml.org/)-format configuration files in `/etc/nextepc/*.conf`.
-
-Note that [/etc/nextepc/nextepc.conf](https://github.com/acetcom/nextepc/blob/master/support/config/nextepc.conf.in) is just a manual. If you use `nextepc-epcd` in a build environment, this configuration file could be used, but if you installed it with the package manager, modifying this configuration file has no effect.
-
-Anyway, before setting up, please decide a network interface to run NextEPC, and then the IP address of the interface needs to be recorded in the configuration files.
-
-### Modification of MME config
-
-Open `/etc/nextepc/mme.conf` file, and find an item in mme &rarr; s1ap. Please set your IP address with putting `addr:` keyword.
-
-```yaml
-mme:
-    freeDiameter: mme.conf
-    s1ap:
-      addr: <ip address>
-...
-```
-
-Save and exit.
-
-### Modification of SGW config
-
-Open `/etc/nextepc/sgw.conf` file, and find an item in sgw &rarr; gtpu. Please set your IP address with putting `addr:` keyword.
-
-```yaml
-sgw:
-    gtpc:
-      addr: 127.0.0.2
-    gtpu:
-      addr: <ip address>
-...
-```
-
-Save and exit.
-
-
-### Adding a route for UE to have Internet connectivity
-
-By default, a LTE UE will receive a IP address with the network address of 45.45.0.0/16. If you have a [NAT](https://en.wikipedia.org/wiki/Network_address_translation) router (e.g., wireless router, cable modem, etc), the LTE UE can reach Internet in uplink, but it cannot in downlink. It's because the NAT router has no idea on 45.45.0.0/16, so adding a route is required. Please refer to the user manual to know how to add a static route in your router.
-
-Add a route of both 45.45.0.0/16 and cafe::0/64 to go the PGW IP address. For example, a command for Linux will be:
-
-```bash
-sudo ip route add 45.45.0.0/16 via <PGW IP address>
-sudo ip route add cafe::0/64 via <PGW IP address>
-```
-
-If you have no NAT router, there is another option for you. `iptables` can solve the problem. You execute the following command in NextEPC installed host. The `eth0` shown below is just an example. Do not miss out on modifying your interface name(e.g `enp0s25`, `wls3`).
-
-```bash
-sudo sh -c "echo 1 > /proc/sys/net/ipv4/ip_forward"
-sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
-sudo iptables -I INPUT -i pgwtun -j ACCEPT
-```
-
-## 2. LTE Network Settings
-
-### PLMN and TAC
-
-By default, LTE PLMN and TAC are set as shown in the following:
-
-```yaml
-mme:
-    gummei: 
-      plmn_id:
-        mcc: 001
-        mnc: 01
-      mme_gid: 2
-      mme_code: 1
-    tai:
-      plmn_id:
-        mcc: 001
-        mnc: 01
-      tac: 12345
-```
-
-The LTE EnodeBs need to be set to use the same values of PLMN and TAC in NextEPC. If you want to change them, please modifiy in `/etc/nextepc/mme.conf`.
-
-
-### Restarting MME and SGW.
-
-After changing conf files, please restart NextEPC daemons.
-
-```bash
-sudo systemctl restart nextepc-mmed
-sudo systemctl restart nextepc-sgwd
-```
-
-## 3. Register a subscriber
-
-Open _http://localhost:3000_. Login with **admin**. Later, you can change the password in _Account_ Menu.
-
-```markdown
-  - Username : admin
-  - Password : 1423
-```
-
-Using Web UI, you can add a subscriber without a Mongo DB client. 
-
-```markdown
-  - Go to Subscriber Menu.
-  - Click `+` Button to add a new subscriber.
-  - Fill the IMSI, security context(K, OPc, AMF), and APN of the subscriber.
-  - Click `SAVE` Button
-```
-
-This addition affects immediately NextEPC without restaring any daemon.
-
-## Appendix 
-
-When you install NextEPC for the first time, the default configuration looks like this:
-
-### Network
-
-```
-* MME
-  S1AP: listen on all address avaiable in system
-  GTP-C: listen on the first IP address in system
-  DIAMETER: 127.0.0.2 (No TLS)
-
-* SGW
-  GTP-C: 127.0.0.2
-  GTP-U: listen on the first IP address in system
-
-* PGW
-  GTP-C: Both 127.0.0.3 and [::1]
-  GTP-U: Both 127.0.0.3 and [::1]
-  DIAMETER: 127.0.0.3 (No TLS)
-
-* HSS
-  DIAMETER: 127.0.0.4 (No TLS)
-
-* PCRF
-  DIAMETER: 127.0.0.5 (No TLS)
-```
-
-### GUMMEI, PLMN and TAC
-
-```
-* GUMMEI
-  PLMN ID - MNC: 001, MCC: 01
-  MME Group : 2
-  MME Code : 1
-
-* TAI
-  PLMN ID - MNC: 001, MCC: 01
-  TAC : 12345
-```
-
-### Security
-
-```
-* Integrity : EIA1 - Snow 3G
-* Ciphering : EEA0 - Nothing
-```
-
-### UE Network
-
-```
-* IPv4 : 45.45.0.1/16
-* IPv6 : cafe::1/64
-```
-
-### DNS
-
-```
-* IPv4
-  Primary : 8.8.8.8 
-  Secondary : 8.8.4.4
-
-* IPv6
-  Primary : 2001:4860:4860::8888
-  Secondary : 2001:4860:4860::8844
-```

acinclude.m4

@@ -1,108 +0,0 @@
-dnl
-dnl CORE_SUBST(varname)
-dnl
-dnl Adds variable with it's value into Makefile, e.g.:
-dnl CC = gcc
-dnl
-AC_DEFUN([CORE_SUBST],[
-  CORE_VAR_SUBST="$CORE_VAR_SUBST $1"
-])
-
-dnl
-dnl CORE_SUBST_OLD(varname)
-dnl
-dnl Same as CORE_SUBST() but also substitutes all @VARNAME@
-dnl instances in every file passed to AC_OUTPUT()
-dnl
-AC_DEFUN([CORE_SUBST_OLD],[
-  CORE_SUBST($1)
-  AC_SUBST($1)
-])
-
-dnl
-dnl CORE_CONFIG_NICE(filename)
-dnl
-dnl Generates the config.nice file
-dnl
-AC_DEFUN([CORE_CONFIG_NICE],[
-  AC_REQUIRE([AC_PROG_EGREP])
-  AC_REQUIRE([LT_AC_PROG_SED])
-  CORE_SUBST_OLD(EGREP)
-  CORE_SUBST_OLD(SED)
-  test -f $1 && mv $1 $1.old
-  rm -f $1.old
-  cat >$1<<EOF
-#! /bin/sh
-#
-# Created by configure
-
-EOF
-
-  for var in CFLAGS CXXFLAGS CPPFLAGS LDFLAGS EXTRA_LDFLAGS_PROGRAM LIBS CC CXX; do
-    eval val=\$$var
-    if test -n "$val"; then
-      echo "$var='$val' \\" >> $1
-    fi
-  done
-
-  echo "'[$]0' \\" >> $1
-  if test `expr -- [$]0 : "'.*"` = 0; then
-    CONFIGURE_COMMAND="$CONFIGURE_COMMAND '[$]0'"
-  else 
-    CONFIGURE_COMMAND="$CONFIGURE_COMMAND [$]0"
-  fi
-  for arg in $ac_configure_args; do
-     if test `expr -- $arg : "'.*"` = 0; then
-        if test `expr -- $arg : "--.*"` = 0; then
-       	  break;
-        fi
-        echo "'[$]arg' \\" >> $1
-        CONFIGURE_OPTIONS="$CONFIGURE_OPTIONS '[$]arg'"
-     else
-        if test `expr -- $arg : "'--.*"` = 0; then
-       	  break;
-        fi
-        echo "[$]arg \\" >> $1
-        CONFIGURE_OPTIONS="$CONFIGURE_OPTIONS [$]arg"
-     fi
-  done
-  echo '"[$]@"' >> $1
-  chmod +x $1
-  CONFIGURE_COMMAND="$CONFIGURE_COMMAND $CONFIGURE_OPTIONS"
-  CORE_SUBST_OLD(CONFIGURE_COMMAND)
-  CORE_SUBST_OLD(CONFIGURE_OPTIONS)
-])
-
-AC_DEFUN([AX_CHECK_COMPILE_FLAG],
-[AC_PREREQ(2.59)dnl for _AC_LANG_PREFIX
-AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
-AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
-  ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
-  _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
-  AC_COMPILE_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
-    [AS_VAR_SET(CACHEVAR,[yes])],
-    [AS_VAR_SET(CACHEVAR,[no])])
-  _AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])
-AS_IF([test x"AS_VAR_GET(CACHEVAR)" = xyes],
-  [m4_default([$2], :)],
-  [m4_default([$3], :)])
-AS_VAR_POPDEF([CACHEVAR])dnl
-])dnl AX_CHECK_COMPILE_FLAGS
-
-# adl_RECURSIVE_EVAL(VALUE, RESULT)
-# =================================
-# Interpolate the VALUE in loop until it doesn't change,
-# and set the result to $RESULT.
-# WARNING: It's easy to get an infinite loop with some unsane input.
-# For example ${datadir} becomes ${datarootdir}, and then ${prefix}/share, and
-# finally ${prefix} is replaced by the prefix.
-AC_DEFUN([adl_RECURSIVE_EVAL],
-[_lcl_receval="$1"
-$2=`(test "x$prefix" = xNONE && prefix="$ac_default_prefix"
-     test "x$exec_prefix" = xNONE && exec_prefix="${prefix}"
-     _lcl_receval_old=''
-     while test "[$]_lcl_receval_old" != "[$]_lcl_receval"; do
-       _lcl_receval_old="[$]_lcl_receval"
-       eval _lcl_receval="\"[$]_lcl_receval\""
-     done
-     echo "[$]_lcl_receval")`])

build/dput-upload.sh

@@ -0,0 +1,69 @@
+#!/bin/sh
+
+for arg in "$@"; do
+  if [ "$arg" = "-h" ]; then
+    echo "Usage: ./build/dput-upload.sh [PROJECT]"
+    echo ""
+    echo "  PROJECT: snapshot(=Default), release"
+    echo ""
+    echo "  This script is used to upload a source package to OBS(OpenSUSE Build Service)."
+    echo ""
+    echo "  This script must be called from the base directory of the repository, and"
+    echo "  requires utilites from these packages: git-buildpackage dput git"
+    echo ""
+    exit
+  fi
+done
+
+if [ ! -x /usr/bin/dpkg-parsechangelog ]; then
+  echo "Missing the dpkg-parsechangelog utility from the dpkg-dev package"
+  exit 1
+fi
+
+if [ ! -f debian/changelog ]; then
+  echo "This script must be called from the base directory of the package"
+  exit 1
+fi
+
+if [ ! -d .git ]; then
+  echo "This script only works from within a repository"
+  exit 1
+fi
+
+if [ ! -x /usr/bin/gbp ]; then
+  echo "Missing git-buildpackage"
+  exit 1
+fi
+
+PACKAGE=$(dpkg-parsechangelog | sed -n 's/^Source: //p')
+DT="$(date +%Y%m%d)+git$(git rev-parse --short HEAD)"
+TOP=$(pwd)
+
+PROJECT=ppa:open5gs/${1-snapshot}
+
+DEB_SRC=$TOP/build/deb-src
+DEB_DIR=$DEB_SRC/$PACKAGE
+
+build_package() {
+  if [ ! -d $DEB_DIR ]; then
+    mkdir -p $DEB_DIR
+  fi
+
+  ./build/git-version-gen . > .tarball-version 2>/dev/null
+  gbp buildpackage -S -d \
+    --git-ignore-branch --git-ignore-new "--git-export-dir=$DEB_DIR" \
+    --git-postexport='cp $GBP_GIT_DIR/../.tarball-version $GBP_TMP_DIR/'
+  rm -f .tarball-version
+
+  cd $DEB_DIR
+  dput $PROJECT *_source.changes
+
+  rm "$DEB_DIR/"*
+  rmdir "$DEB_DIR/"
+  rmdir "$DEB_SRC/"
+
+  cd $TOP
+}
+
+build_package
+echo "${1-snapshot} versions of $DT"

build/git-version-gen

@@ -0,0 +1,227 @@
+#!/bin/sh
+# Print a version string.
+scriptversion=2017-09-13.06; # UTC
+
+# Copyright (C) 2007-2017 Free Software Foundation, Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# This script is derived from GIT-VERSION-GEN from GIT: https://git-scm.com/.
+# It may be run two ways:
+# - from a git repository in which the "git describe" command below
+#   produces useful output (thus requiring at least one signed tag)
+# - from a non-git-repo directory containing a .tarball-version file, which
+#   presumes this script is invoked like "./git-version-gen .tarball-version".
+
+# In order to use intra-version strings in your project, you will need two
+# separate generated version string files:
+#
+# .tarball-version - present only in a distribution tarball, and not in
+#   a checked-out repository.  Created with contents that were learned at
+#   the last time autoconf was run, and used by git-version-gen.  Must not
+#   be present in either $(srcdir) or $(builddir) for git-version-gen to
+#   give accurate answers during normal development with a checked out tree,
+#   but must be present in a tarball when there is no version control system.
+#   Therefore, it cannot be used in any dependencies.  GNUmakefile has
+#   hooks to force a reconfigure at distribution time to get the value
+#   correct, without penalizing normal development with extra reconfigures.
+#
+# .version - present in a checked-out repository and in a distribution
+#   tarball.  Usable in dependencies, particularly for files that don't
+#   want to depend on config.h but do want to track version changes.
+#   Delete this file prior to any autoconf run where you want to rebuild
+#   files to pick up a version string change; and leave it stale to
+#   minimize rebuild time after unrelated changes to configure sources.
+#
+# As with any generated file in a VC'd directory, you should add
+# /.version to .gitignore, so that you don't accidentally commit it.
+# .tarball-version is never generated in a VC'd directory, so needn't
+# be listed there.
+#
+# Use the following line in your configure.ac, so that $(VERSION) will
+# automatically be up-to-date each time configure is run (and note that
+# since configure.ac no longer includes a version string, Makefile rules
+# should not depend on configure.ac for version updates).
+#
+# AC_INIT([GNU project],
+#         m4_esyscmd([build-aux/git-version-gen .tarball-version]),
+#         [bug-project@example])
+#
+# Then use the following lines in your Makefile.am, so that .version
+# will be present for dependencies, and so that .version and
+# .tarball-version will exist in distribution tarballs.
+#
+# EXTRA_DIST = $(top_srcdir)/.version
+# BUILT_SOURCES = $(top_srcdir)/.version
+# $(top_srcdir)/.version:
+#	echo $(VERSION) > $@-t && mv $@-t $@
+# dist-hook:
+#	echo $(VERSION) > $(distdir)/.tarball-version
+
+
+me=$0
+
+version="git-version-gen $scriptversion
+
+Copyright 2011 Free Software Foundation, Inc.
+There is NO warranty.  You may redistribute this software
+under the terms of the GNU General Public License.
+For more information about these matters, see the files named COPYING."
+
+usage="\
+Usage: $me [OPTION]... \$srcdir/.tarball-version [TAG-NORMALIZATION-SED-SCRIPT]
+Print a version string.
+
+Options:
+
+   --prefix PREFIX    prefix of git tags (default 'v')
+   --fallback VERSION
+                      fallback version to use if \"git --version\" fails
+
+   --help             display this help and exit
+   --version          output version information and exit
+
+Running without arguments will suffice in most cases."
+
+prefix=v
+fallback=
+
+while test $# -gt 0; do
+  case $1 in
+    --help) echo "$usage"; exit 0;;
+    --version) echo "$version"; exit 0;;
+    --prefix) shift; prefix=${1?};;
+    --fallback) shift; fallback=${1?};;
+    -*)
+      echo "$0: Unknown option '$1'." >&2
+      echo "$0: Try '--help' for more information." >&2
+      exit 1;;
+    *)
+      if test "x$tarball_version_file" = x; then
+        tarball_version_file="$1"
+      elif test "x$tag_sed_script" = x; then
+        tag_sed_script="$1"
+      else
+        echo "$0: extra non-option argument '$1'." >&2
+        exit 1
+      fi;;
+  esac
+  shift
+done
+
+if test "x$tarball_version_file" = x; then
+    echo "$usage"
+    exit 1
+fi
+
+tag_sed_script="${tag_sed_script:-s/x/x/}"
+
+nl='
+'
+
+# Avoid meddling by environment variable of the same name.
+v=
+v_from_git=
+
+# First see if there is a tarball-only version file.
+# then try "git describe", then default.
+if test -f $tarball_version_file
+then
+    v=`cat $tarball_version_file` || v=
+    case $v in
+        *$nl*) v= ;; # reject multi-line output
+        [0-9]*) ;;
+        *) v= ;;
+    esac
+    test "x$v" = x \
+        && echo "$0: WARNING: $tarball_version_file is missing or damaged" 1>&2
+fi
+
+if test "x$v" != x
+then
+    : # use $v
+# Otherwise, if there is at least one git commit involving the working
+# directory, and "git describe" output looks sensible, use that to
+# derive a version string.
+elif test "`git log -1 --pretty=format:x . 2>&1`" = x \
+    && v=`git describe --abbrev=4 --match="$prefix*" HEAD 2>/dev/null \
+          || git describe --abbrev=4 HEAD 2>/dev/null` \
+    && v=`printf '%s\n' "$v" | sed "$tag_sed_script"` \
+    && case $v in
+         $prefix[0-9]*) ;;
+         *) (exit 1) ;;
+       esac
+then
+    # Is this a new git that lists number of commits since the last
+    # tag or the previous older version that did not?
+    #   Newer: v6.10-77-g0f8faeb
+    #   Older: v6.10-g0f8faeb
+    vprefix=`expr "X$v" : 'X\(.*\)-g[^-]*$'` || vprefix=$v
+    case $vprefix in
+        *-*) : git describe is probably okay three part flavor ;;
+        *)
+            : git describe is older two part flavor
+            # Recreate the number of commits and rewrite such that the
+            # result is the same as if we were using the newer version
+            # of git describe.
+            vtag=`echo "$v" | sed 's/-.*//'`
+            commit_list=`git rev-list "$vtag"..HEAD 2>/dev/null` \
+                || { commit_list=failed;
+                     echo "$0: WARNING: git rev-list failed" 1>&2; }
+            numcommits=`echo "$commit_list" | wc -l`
+            v=`echo "$v" | sed "s/\(.*\)-\(.*\)/\1-$numcommits-\2/"`;
+            test "$commit_list" = failed && v=UNKNOWN
+            ;;
+    esac
+
+    # Change the penultimate "-" to ".", for version-comparing tools.
+    # Remove the "g" to save a byte.
+    v=`echo "$v" | sed 's/-\([^-]*\)-g\([^-]*\)$/.\1-\2/'`;
+    v_from_git=1
+elif test "x$fallback" = x || git --version >/dev/null 2>&1; then
+    v=UNKNOWN
+else
+    v=$fallback
+fi
+
+v=`echo "$v" |sed "s/^$prefix//"`
+
+# Test whether to append the "-dirty" suffix only if the version
+# string we're using came from git.  I.e., skip the test if it's "UNKNOWN"
+# or if it came from .tarball-version.
+if test "x$v_from_git" != x; then
+  # Don't declare a version "dirty" merely because a timestamp has changed.
+  git update-index --refresh > /dev/null 2>&1
+
+  dirty=`exec 2>/dev/null;git diff-index --name-only HEAD` || dirty=
+  case "$dirty" in
+      '') ;;
+      *) # Append the suffix only if there isn't one already.
+          case $v in
+            *-dirty) ;;
+            *) v="$v-dirty" ;;
+          esac ;;
+  esac
+fi
+
+# Omit the trailing newline, so that m4_esyscmd can use the result directly.
+printf %s "$v"
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:

build/osc-upload.sh

@@ -0,0 +1,91 @@
+#!/bin/sh
+
+for arg in "$@"; do
+  if [ "$arg" = "-h" ]; then
+    echo "Usage: ./build/osc-upload.sh [PROJECT]"
+    echo ""
+    echo "  PROJECT: snapshot(=Default), release"
+    echo ""
+    echo "  This script is used to upload a source package to OBS(OpenSUSE Build Service)."
+    echo ""
+    echo "  This script must be called from the base directory of the repository, and"
+    echo "  requires utilites from these packages: git-buildpackage osc git"
+    echo ""
+    exit
+  fi
+done
+
+if [ ! -x /usr/bin/dpkg-parsechangelog ]; then
+  echo "Missing the dpkg-parsechangelog utility from the dpkg-dev package"
+  exit 1
+fi
+
+if [ ! -f debian/changelog ]; then
+  echo "This script must be called from the base directory of the package"
+  exit 1
+fi
+
+if [ ! -d .git ]; then
+  echo "This script only works from within a repository"
+  exit 1
+fi
+
+if [ ! -x /usr/bin/gbp ]; then
+  echo "Missing git-buildpackage"
+  exit 1
+fi
+
+PACKAGE=$(dpkg-parsechangelog | sed -n 's/^Source: //p')
+DT="$(date +%Y%m%d)+git$(git rev-parse --short HEAD)"
+TOP=$(pwd)
+
+OGS_REPO=$TOP/build/obs-repo
+PROJECT=home:acetcom:open5gs:${1-snapshot}
+OBS_DIR=$OGS_REPO/$PROJECT/$PACKAGE
+
+prepare() {
+  if [ -d $OBS_DIR ]; then
+    (cd $OBS_DIR && osc up)
+  else
+    mkdir -p $OGS_REPO
+    (cd $OGS_REPO && osc co $PROJECT $PACKAGE)
+  fi
+}
+
+DEB_SRC=$TOP/build/deb-src
+DEB_DIR=$DEB_SRC/$PACKAGE
+
+build_package() {
+  if [ ! -d $DEB_DIR ]; then
+    mkdir -p $DEB_DIR
+  fi
+
+  ./build/git-version-gen . > .tarball-version 2>/dev/null
+  gbp buildpackage -S --no-sign -d \
+    --git-ignore-branch --git-ignore-new "--git-export-dir=$DEB_DIR" \
+    --git-postexport='cp $GBP_GIT_DIR/../.tarball-version $GBP_TMP_DIR/'
+  rm -f .tarball-version
+
+  cd $OBS_DIR
+
+  file=$(cd "$DEB_DIR/" ; ls ./*.dsc)
+  echo $file
+  if [ -e "$file" ] ; then
+    osc rm ./* || true
+  fi
+
+  mv "$DEB_DIR/"*.dsc .
+  mv "$DEB_DIR/"*.tar* .
+  osc add ./*
+
+  rm "$DEB_DIR/"*
+  rmdir "$DEB_DIR/"
+  rmdir "$DEB_SRC/"
+
+  cd $TOP
+}
+
+prepare
+build_package
+
+(cd $OBS_DIR && osc ci -m "Snapshot versions of $DT")

configure.ac

@@ -1,48 +1,51 @@
-dnl Process this file with autoconf to produce a configure script.
-dnl
-dnl This file is free software; as a special exception the author gives
-dnl unlimited permission to copy and/or distribute it, with or without
-dnl modifications, as long as this notice is preserved.
-dnl
-dnl This program is distributed in the hope that it will be useful, but
-dnl WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
-dnl implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+#                                                       -*- Autoconf -*-
+# Process this file with autoconf to produce a configure script.
 
-AC_INIT([NextEPC], [0.3.6], [acetcom@gmail.com])
+# Copyright (C) 2019 by Sukchan Lee <acetcom@gmail.com>
 
-AC_SUBST(LIBVERSION)
-LIBVERSION=1:0:0
+# This file is part of Open5GS.
 
-CORE_CONFIG_NICE(config.nice)
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-dnl Must come before AM_INIT_AUTOMAKE.
-AC_CONFIG_AUX_DIR([build-aux])
+AC_INIT([NextEPC],
+	m4_esyscmd([build/git-version-gen .tarball-version]),
+	[acetcom@gmail.com])
+
+AC_CONFIG_AUX_DIR([build])
+AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_TESTDIR(test)
-AM_INIT_AUTOMAKE([1.10 -Wall -Werror foreign subdir-objects])
-
-# Where to generate output; srcdir location.
-AC_CONFIG_HEADERS([config.h:config.in])dnl Keep filename to 8.3 for MS-DOS.
-AC_CONFIG_SRCDIR([main.c])
 AC_CANONICAL_HOST
 
+AM_INIT_AUTOMAKE([1.10 -Wall -Werror foreign subdir-objects])
+m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
+AC_CONFIG_HEADERS([lib/base/nextepc-config.h])
+AC_CONFIG_SRCDIR([main.c])
+
 LO_DEV="lo0"
 case $host in
     *linux*)
-        OSDIR="unix"
         OSCPPFLAGS="-DLINUX=1"
         IPFW_CPPFLAGS="-DNEED_SYSCTLBYNAME -DNEED_SIN_LEN"
         LO_DEV="lo"
         ;;
     *-apple-darwin*)
-        OSDIR="unix"
         OSCPPFLAGS="-DDARWIN -DSIGPROCMASK_SETS_THREAD_MASK"
         ;;
     *)
-        OSDIR="unix"
         ;;
 esac
 AC_SUBST(OSCPPFLAGS)
-AC_SUBST(OSDIR)
 AC_SUBST(IPFW_CPPFLAGS)
 AC_SUBST(LO_DEV)
 
@@ -67,9 +70,6 @@ AH_VERBATIM([_REENTRANT],
 #endif
 ])
 
-dnl kernel style compile messages
-m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
-
 dnl Checks CC and freinds
 AC_PROG_MAKE_SET
 AC_PROG_MKDIR_P
@@ -77,7 +77,7 @@ AC_PROG_CC
 AM_PROG_CC_C_O
 AC_PROG_INSTALL
 AM_PROG_AR
-LT_INIT([pic-only disable-static])
+LT_INIT
 
 AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
 if test "x$PKG_CONFIG" = "xno"; then
@@ -88,172 +88,56 @@ PKG_PROG_PKG_CONFIG([0.20])
 dnl Checks for compile flag
 AX_CHECK_COMPILE_FLAG([-Wno-unused-result], [CFLAGS="$CFLAGS -Wno-unused-result"])
 
-dnl Checks for pointer size
-AC_CHECK_SIZEOF(void*, 4)
-
-dnl Checks for integer size
-AC_CHECK_SIZEOF(char, 1)
-AC_CHECK_SIZEOF(int, 4)
-AC_CHECK_SIZEOF(long, 4)
-AC_CHECK_SIZEOF(short, 2)
-AC_CHECK_SIZEOF(long long, 8)
-
-if test "$ac_cv_sizeof_short" = "2"; then
-    short_value=short
-fi
-if test "$ac_cv_sizeof_int" = "4"; then
-    int_value=int
-fi
-# Now we need to find what c_int64_t (sizeof == 8) will be.
-# The first match is our preference.
-if test "$ac_cv_sizeof_int" = "8"; then
-    int64_literal='#define C_INT64_C(val) (val)'
-    uint64_literal='#define C_UINT64_C(val) (val##U)'
-    int64_t_fmt='#define C_INT64_T_FMT "d"'
-    uint64_t_fmt='#define C_UINT64_T_FMT "u"'
-    uint64_t_hex_fmt='#define C_UINT64_T_HEX_FMT "x"'
-    int64_value="int"
-    long_value=int
-    int64_strfn="strtoi"
-elif test "$ac_cv_sizeof_long" = "8"; then
-    int64_literal='#define C_INT64_C(val) (val##L)'
-    uint64_literal='#define C_UINT64_C(val) (val##UL)'
-    int64_t_fmt='#define C_INT64_T_FMT "ld"'
-    uint64_t_fmt='#define C_UINT64_T_FMT "lu"'
-    uint64_t_hex_fmt='#define C_UINT64_T_HEX_FMT "lx"'
-    int64_value="long"
-    long_value=long
-    int64_strfn="strtol"
-elif test "$ac_cv_sizeof_long_long" = "8"; then
-    int64_literal='#define C_INT64_C(val) (val##LL)'
-    uint64_literal='#define C_UINT64_C(val) (val##ULL)'
-    # Linux, Solaris, FreeBSD all support ll with printf.
-    # BSD 4.4 originated 'q'.  Solaris is more popular and
-    # doesn't support 'q'.  Solaris wins.  Exceptions can
-    # go to the OS-dependent section.
-    int64_t_fmt='#define C_INT64_T_FMT "lld"'
-    uint64_t_fmt='#define C_UINT64_T_FMT "llu"'
-    uint64_t_hex_fmt='#define C_UINT64_T_HEX_FMT "llx"'
-    int64_value="long long"
-    long_value="long long"
-    int64_strfn="strtoll"
-elif test "$ac_cv_sizeof_longlong" = "8"; then
-    int64_literal='#define C_INT64_C(val) (val##LL)'
-    uint64_literal='#define C_UINT64_C(val) (val##ULL)'
-    int64_t_fmt='#define C_INT64_T_FMT "qd"'
-    uint64_t_fmt='#define C_UINT64_T_FMT "qu"'
-    uint64_t_hex_fmt='#define C_UINT64_T_HEX_FMT "qx"'
-    int64_value="__int64"
-    long_value="__int64"
-    int64_strfn="strtoll"
-else
-    # int64_literal may be overriden if your compiler thinks you have
-    # a 64-bit value but CORE does not agree.
-    AC_ERROR([could not detect a 64-bit integer type])
-fi
-
-AC_SUBST(short_value)
-AC_SUBST(int_value)
-AC_SUBST(long_value)
-AC_SUBST(int64_value)
-AC_SUBST(int64_t_fmt)
-AC_SUBST(uint64_t_fmt)
-AC_SUBST(uint64_t_hex_fmt)
-AC_SUBST(int64_literal)
-AC_SUBST(uint64_literal)
-
-AC_CHECK_SIZEOF(pid_t, 8)
-
-if test "$ac_cv_sizeof_pid_t" = "$ac_cv_sizeof_short"; then
-    pid_t_fmt='#define C_PID_T_FMT "hd"'
-elif test "$ac_cv_sizeof_pid_t" = "$ac_cv_sizeof_int"; then
-    pid_t_fmt='#define C_PID_T_FMT "d"'
-elif test "$ac_cv_sizeof_pid_t" = "$ac_cv_sizeof_long"; then
-    pid_t_fmt='#define C_PID_T_FMT "ld"'
-elif test "$ac_cv_sizeof_pid_t" = "$ac_cv_sizeof_long_long"; then
-    pid_t_fmt='#define C_PID_T_FMT APR_INT64_T_FMT'
-else
-    pid_t_fmt='#error Can not determine the proper size for pid_t'
-fi
-
-case $host in
-   *-solaris*)
-       if test "$ac_cv_sizeof_long" = "8"; then
-         pid_t_fmt='#define C_PID_T_FMT "d"'
-       else
-         pid_t_fmt='#define C_PID_T_FMT "ld"'
-       fi
-       ;;
-esac
-
-AC_SUBST(pid_t_fmt)
-
-AC_DEFINE_UNQUOTED([PACKAGE_VERSION_MAJOR],
-        [`echo $PACKAGE_VERSION | $SED 's/^\([[^\.]]\+\)\.\([[^\.]]\+\)\.\([[^\.]]\+\).*/\1/'`],
-        [Major version of this package])
-AC_DEFINE_UNQUOTED([PACKAGE_VERSION_MINOR],
-        [`echo $PACKAGE_VERSION | $SED 's/^\([[^\.]]\+\)\.\([[^\.]]\+\)\.\([[^\.]]\+\).*/\2/'`],
-        [Minor version of this package])
-AC_DEFINE_UNQUOTED([PACKAGE_VERSION_PATCHLEVEL],
-        [`echo $PACKAGE_VERSION | $SED 's/^\([[^\.]]\+\)\.\([[^\.]]\+\)\.\([[^\.]]\+\).*/\3/'`],
-        [Patch version of this package])
-
 ##################################
 #### Checks for Directories. #####
 ##################################
 
-adl_RECURSIVE_EVAL(["${bindir}"], [BIN_DIR])
-adl_RECURSIVE_EVAL(["${libdir}"], [LIB_DIR])
-adl_RECURSIVE_EVAL(["${sysconfdir}"], [SYSCONF_DIR])
-adl_RECURSIVE_EVAL(["${localstatedir}"], [LOCALSTATE_DIR])
+AX_RECURSIVE_EVAL(["${bindir}"], [BIN_DIR])
+AX_RECURSIVE_EVAL(["${libdir}"], [LIB_DIR])
+AX_RECURSIVE_EVAL(["${sysconfdir}"], [SYSCONF_DIR])
+AX_RECURSIVE_EVAL(["${localstatedir}"], [LOCALSTATE_DIR])
 AC_SUBST(BIN_DIR)
 AC_SUBST(LIB_DIR)
 AC_SUBST(SYSCONF_DIR)
 AC_SUBST(LOCALSTATE_DIR)
 
-##################################
-#### Checks for header files. ####
-##################################
+#######################################
+#### Checks for library functions. ####
+#######################################
+
+AC_SEARCH_LIBS(gethostbyname, nsl)
+AC_SEARCH_LIBS(gethostname, nsl)
+AC_SEARCH_LIBS(socket, socket)
+AC_SEARCH_LIBS(pthread_barrier_wait, pthread)
+AC_SEARCH_LIBS(gnutls_global_set_log_level, gnutls)
+
+AC_CHECK_FILE([lib/ogslib/configure.ac], [have_srclib=yes], [have_srclib=no])
+if test x$have_srclib == xyes; then
+  AC_CONFIG_SUBDIRS([lib/ogslib])
+  AC_SUBST(OGSCORE_CFLAGS, '-I$(top_srcdir)/lib/ogslib/src')
+  AC_SUBST(OGSCORE_LIBS, '$(top_srcdir)/lib/ogslib/src/core/libogscore-1.0.la')
+  AC_SUBST(OGSCRYPT_CFLAGS, '-I$(top_srcdir)/lib/ogslib/src')
+  AC_SUBST(OGSCRYPT_LIBS, '$(top_srcdir)/lib/ogslib/src/crypt/libogscrypt-1.0.la')
+else
+  PKG_CHECK_MODULES(OGSCORE, ogscore-1.0 >= 1.0.0)
+  PKG_CHECK_MODULES(OGSCRYPT, ogscrypt-1.0 >= 1.0.0)
+fi
+AM_CONDITIONAL([WITH_SRCLIB], [test x$have_srclib = xyes])
+
+AC_SEARCH_LIBS([sctp_sendmsg], [sctp], [have_sctp=yes], [have_sctp=no])
+if test x$have_sctp == xno; then
+  AC_SEARCH_LIBS([usrsctp_init], [usrsctp], [have_usrsctp=yes], [have_usrsctp=no])
+  if test x$have_usrsctp == xno; then
+    AC_MSG_ERROR([You must install the SCTP libraries and development headers to enable SCTP support.])
+  else
+    AC_DEFINE(HAVE_USRSCTP, 1,
+        [Define if your system supports the usrsctp system calls])
+  fi 
+fi
+AM_CONDITIONAL([WITH_USRSCTP], [test x$have_usrsctp = xyes])
 
-AC_HEADER_STDC
 AC_CHECK_HEADERS( \
-    arpa/inet.h \
-    ctype.h \
-    errno.h \
-    fcntl.h \
-    ifaddrs.h \
-    limits.h \
-    netdb.h \
-    pthread.h \
-    regex.h \
-    semaphore.h \
-    signal.h \
-    stdarg.h \
-    stdio.h \
-    stdint.h \
-    stdlib.h \
-    string.h \
-    strings.h \
-    time.h \
-    unistd.h \
-    net/if_dl.h \
-    net/if.h \
-    netinet/ether.h \
-    netinet/in.h \
-    netinet/in_systm.h \
-    netinet/udp.h \
-    netinet/tcp.h \
     netinet/sctp.h \
-    usrsctp.h \
-    sys/ioctl.h \
-    sys/param.h \
-    sys/socket.h \
-    sys/stat.h \
-    sys/syslimits.h \
-    sys/types.h \
-    sys/time.h \
-    sys/wait.h \
-    sys/uio.h \
 )
 
 AC_CHECK_HEADERS(netinet/ip.h netinet/ip6.h net/route.h,,,[[
@@ -279,134 +163,6 @@ AC_CHECK_HEADERS(netinet/ip_icmp.h netinet/icmp6.h,,,[[
 #include <netinet/ip.h>
 ]])
 
-##########################################
-#### Checks for typedefs, structures, ####
-####  and compiler characteristics.   ####
-##########################################
-
-AC_C_BIGENDIAN
-
-AC_CHECK_MEMBERS([struct tm.tm_gmtoff, struct tm.__tm_gmtoff],,,[
-#include <sys/types.h>
-#include <time.h>])
-
-AC_CHECK_MEMBER(struct sockaddr.sa_len,
-                AC_DEFINE(HAVE_SA_LEN, 1, [Define this if your stack has sa_len in sockaddr struct.]),,
-                [#ifdef HAVE_SYS_TYPES_H
-                 #include <sys/types.h>
-                 #endif
-                 #include <sys/socket.h>])
-
-AC_CHECK_MEMBER(struct sockaddr_in.sin_len,
-                AC_DEFINE(HAVE_SIN_LEN, 1, [Define this if your IPv4 has sin_len in sockaddr_in struct.]),,
-                [#ifdef HAVE_SYS_TYPES_H
-                 #include <sys/types.h>
-                 #endif
-                 #include <netinet/in.h>])
-
-AC_CHECK_MEMBER(struct sockaddr_in6.sin6_len,
-                AC_DEFINE(HAVE_SIN6_LEN, 1, [Define this if your IPv6 has sin6_len in sockaddr_in6 struct.]),,
-                [#ifdef HAVE_SYS_TYPES_H
-                 #include <sys/types.h>
-                 #endif
-                 #include <netinet/in.h>])
-
-AC_CHECK_MEMBER(struct sockaddr_conn.sconn_len,
-                AC_DEFINE(HAVE_SCONN_LEN, 1, [Define this if your userland stack has sconn_len in sockaddr_conn struct.]),,
-                [#include "usrsctplib/usrsctp.h"])
-
-AC_MSG_CHECKING(for socklen_t)
-AC_TRY_COMPILE([#ifdef HAVE_SYS_TYPES_H
-                #include <sys/types.h>
-                #endif
-                #include <sys/socket.h>],
-               [socklen_t x; x = 1; return ((int)x);],
-               [AC_MSG_RESULT(yes)],
-               [AC_MSG_RESULT(int)
-                AC_DEFINE(socklen_t, int, [Define a type for socklen_t.])])
-
-AC_CHECK_FILE(/dev/random,
-    AC_DEFINE([HAVE_DEV_RANDOM], [1],
-        [Define to 1 if you have the /dev/random file.]))
-
-AC_CACHE_CHECK([whether the compiler provides atomic builtins], [ap_cv_atomic_builtins],
-[AC_TRY_RUN([
-int main()
-{
-    unsigned long val = 1010, tmp, *mem = &val;
-
-    if (__sync_fetch_and_add(&val, 1010) != 1010 || val != 2020)
-        return 1;
-
-    tmp = val;
-
-    if (__sync_fetch_and_sub(mem, 1010) != tmp || val != 1010)
-        return 1;
-
-    if (__sync_sub_and_fetch(&val, 1010) != 0 || val != 0)
-        return 1;
-
-    tmp = 3030;
-
-    if (__sync_val_compare_and_swap(mem, 0, tmp) != 0 || val != tmp)
-        return 1;
-
-    if (__sync_lock_test_and_set(&val, 4040) != 3030)
-        return 1;
-
-    mem = &tmp;
-
-    if (__sync_val_compare_and_swap(&mem, &tmp, &val) != &tmp)
-        return 1;
-
-    __sync_synchronize();
-
-    if (mem != &val)
-        return 1;
-
-    return 0;
-}], [ap_cv_atomic_builtins=yes], [ap_cv_atomic_builtins=no], [ap_cv_atomic_builtins=no])])
-
-if test "$ap_cv_atomic_builtins" = "yes"; then
-    AC_DEFINE(HAVE_ATOMIC_BUILTINS, 1, [Define if compiler provides atomic builtins])
-fi
-
-#######################################
-#### Checks for library functions. ####
-#######################################
-
-AC_FUNC_VPRINTF
-AC_CHECK_FUNCS(\
-    atexit \
-    gettimeofday \
-    memmove \
-    strerror \
-    inet_ntop inet_pton inet_aton \
-    sigaction sigwait sigsuspend \
-    stpcpy strcasecmp strtoul stricmp \
-    writev \
-    utime utimes sem_timedwait \
-    pthread_yield sched_yield \
-    getenv putenv setenv unsetenv \
-)
-
-AC_SEARCH_LIBS(gethostbyname, nsl)
-AC_SEARCH_LIBS(gethostname, nsl)
-AC_SEARCH_LIBS(socket, socket)
-AC_SEARCH_LIBS(pthread_barrier_wait, pthread)
-AC_SEARCH_LIBS(gnutls_global_set_log_level, gnutls)
-
-AC_SEARCH_LIBS([sctp_sendmsg], [sctp], [have_sctp_lib=yes], [have_sctp_lib=no])
-if test x$have_sctp_lib == xno; then
-  AC_SEARCH_LIBS([usrsctp_init], [usrsctp], [have_usrsctp_lib=yes], [have_usrsctp_lib=no])
-  if test x$have_usrsctp_lib == xno; then
-    AC_MSG_ERROR([You must install the SCTP libraries and development headers to enable SCTP support.])
-  else
-    AC_DEFINE([USE_USRSCTP], [1], [Define to 1 if you have the usrsctp library.])
-  fi 
-fi
-AM_CONDITIONAL([USRSCTP], [test x$have_usrsctp_lib = xyes])
-
 PKG_CHECK_MODULES([YAML], yaml-0.1 >= 0.1.4)
 PKG_CHECK_MODULES([MONGOC], libmongoc-1.0 >= 1.3.1)
 FREEDIAMETER_DIR=freeDiameter-1.2.1
@@ -418,12 +174,8 @@ AC_SUBST(FREEDIAMETER_DIR)
 
 AC_CONFIG_SUBDIRS([lib/freeDiameter-1.2.1])
 
-AC_CONFIG_FILES([lib/core/include/core.h])
-AC_CONFIG_FILES([lib/core/src/Makefile])
-AC_CONFIG_FILES([lib/core/test/Makefile])
-AC_CONFIG_FILES([lib/core/Makefile])
-AC_CONFIG_FILES([lib/s1ap/asn1c/Makefile])
-AC_CONFIG_FILES([lib/s1ap/Makefile])
+AC_CONFIG_FILES([lib/base/Makefile])
+AC_CONFIG_FILES([lib/asn1c/Makefile])
 AC_CONFIG_FILES([lib/nas/Makefile])
 AC_CONFIG_FILES([lib/fd/Makefile])
 AC_CONFIG_FILES([lib/gtp/Makefile])
@@ -460,22 +212,23 @@ AC_CONFIG_FILES([support/newsyslog/nextepc.conf])
 AC_CONFIG_FILES([support/newsyslog/Makefile])
 AC_CONFIG_FILES([support/Makefile])
 AC_CONFIG_FILES([test/sample.conf])
+AC_CONFIG_FILES([test/sample-simple.conf])
 AC_CONFIG_FILES([test/sample-volte.conf])
 AC_CONFIG_FILES([test/Makefile])
 AC_CONFIG_FILES([Makefile])
 AC_OUTPUT
 
-echo "
-NextEPC configuration
---------------------
-version                 : ${PACKAGE_VERSION}
-host                    : ${host}
-source code location    : ${srcdir}
-compiler                : ${CC}
-compiler flags          : ${CFLAGS} ${YAML_CFLAGS} ${MONGOC_CFLAGS} 
-linker flags            : ${LDFLAGS} ${LIBS} ${YAML_LIBS} ${MONGOC_LIBS}
-bin directory           : ${BIN_DIR}
-lib directory           : ${LIB_DIR}/nextepc
-config directory        : ${SYSCONF_DIR}/nextepc
-log directory           : ${LOCALSTATE_DIR}/log/nextepc
-"
+AC_MSG_NOTICE([NextEPC configuration:
+
+  version:              ${PACKAGE_VERSION}
+  compiler:             ${CC}
+  compiler flags:       ${CFLAGS} ${OGSLIB_CFLAGS} ${MONGOC_CFLAGS}
+  linker flags:         ${LDFLAGS} ${LIBS} ${OGSCORE_LIBS} ${OGSCRYPT_LIBS} ${MONGOC_LIBS}
+  path prefix:          ${prefix}
+  binary file:          ${BIN_DIR}/nextepc-epcd
+  library directory:    ${LIB_DIR}/nextepc
+  configuration prefix: ${SYSCONF_DIR}/nextepc
+  configuration file:   ${SYSCONF_DIR}/nextepc/nextepc.conf
+  pid file:             ${LOCALSTATE_DIR}/run/nextepc.pid
+  logging file:         ${LOCALSTATE_DIR}/log/nextepc.log
+])

debian/changelog

@@ -1,3 +1,111 @@
+nextepc (0.4.2) unstable; urgency=medium
+
+  * Bug Fixed
+
+ -- Sukchan Lee <acetcom@gmail.com>  Tue, 28 May 2019 20:04:53 +0900
+
+nextepc (0.4.1~bionic) bionic; urgency=medium
+
+  * Bug Fixed
+
+ -- Sukchan Lee <acetcom@gmail.com>  Sat, 18 May 2019 09:59:17 +0000
+
+nextepc (0.4.1~xenial) xenial; urgency=medium
+
+  * Bug Fixed
+
+ -- Sukchan Lee <acetcom@gmail.com>  Sat, 18 May 2019 09:57:44 +0000
+
+nextepc (0.4.1) unstable; urgency=medium
+
+  * Bug Fixed
+
+ -- Sukchan Lee <acetcom@gmail.com>  Sat, 18 May 2019 08:18:59 +0000
+
+nextepc (0.4.0) unstable; urgency=medium
+
+  * Integration with OGSLIB
+
+ -- Sukchan Lee <acetcom@gmail.com>  Mon, 29 Apr 2019 14:09:03 +0000
+
+nextepc (0.3.11~bionic) bionic; urgency=medium
+
+  * Bug Fixed
+
+ -- Sukchan Lee <acetcom@gmail.com>  Sat, 27 Apr 2019 13:59:08 +0000
+
+nextepc (0.3.11~xenial) xenial; urgency=medium
+
+  * Bug Fixed
+
+ -- Sukchan Lee <acetcom@gmail.com>  Sat, 27 Apr 2019 13:57:42 +0000
+
+nextepc (0.3.10~xenial) xenial; urgency=medium
+
+  * Bug Fixed
+
+ -- Sukchan Lee <acetcom@gmail.com>  Fri, 17 Aug 2018 04:28:38 +0000
+
+nextepc (0.3.10~bionic) bionic; urgency=medium
+
+  * Bug Fixed
+
+ -- Sukchan Lee <acetcom@gmail.com>  Fri, 17 Aug 2018 04:21:39 +0000
+
+nextepc (0.3.9~artful) artful; urgency=medium
+
+  * Bug Fixed
+
+ -- Sukchan Lee <acetcom@gmail.com>  Sun, 03 Jun 2018 01:40:44 +0000
+
+nextepc (0.3.9~xenial) xenial; urgency=medium
+
+  * Bug Fixed
+
+ -- Sukchan Lee <acetcom@gmail.com>  Sun, 03 Jun 2018 01:39:33 +0000
+
+nextepc (0.3.9~bionic) bionic; urgency=medium
+
+  * Bug Fixed
+
+ -- Sukchan Lee <acetcom@gmail.com>  Sun, 03 Jun 2018 01:38:15 +0000
+
+nextepc (0.3.8-1~bionic) bionic; urgency=medium
+
+  * Bug Fixed 
+
+ -- Sukchan Lee <acetcom@gmail.com>  Sat, 05 May 2018 22:37:45 +0900
+
+nextepc (0.3.8~bionic) bionic; urgency=medium
+
+  * Bug Fixed 
+
+ -- Sukchan Lee <acetcom@gmail.com>  Sat, 05 May 2018 21:48:55 +0900
+
+nextepc (0.3.8~xenial) xenial; urgency=medium
+
+  * Bug Fixed 
+
+ -- Sukchan Lee <acetcom@gmail.com>  Sun, 29 Apr 2018 21:47:25 +0900
+
+nextepc (0.3.8~artful) artful; urgency=medium
+
+  * Bug Fixed 
+
+ -- Sukchan Lee <acetcom@gmail.com>  Sun, 29 Apr 2018 21:45:36 +0900
+
+nextepc (0.3.7~artful) artful; urgency=medium
+
+  * Buf Fixed
+
+ -- Sukchan Lee <acetcom@gmail.com>  Sat, 14 Apr 2018 15:02:05 +0900
+
+nextepc (0.3.7~xenial) xenial; urgency=medium
+
+  * Bug Fixed
+
+ -- Sukchan Lee <acetcom@gmail.com>  Sat, 14 Apr 2018 14:59:37 +0900
+
 nextepc (0.3.6~xenial) xenial; urgency=medium
 
   * Bug Fixed

debian/control

@@ -4,23 +4,27 @@ Section: net
 Priority: optional
 Build-Depends: debhelper (>= 9),
                autotools-dev,
-               pkg-config,
-               git,
                dh-autoreconf,
                dh-systemd,
+               pkg-config,
+               autoconf,
+               automake,
+               libtool,
                flex,
                bison,
-               libsctp-dev,
+               ogslib-dev (>= 1.0.0),
                libgnutls28-dev,
                libgcrypt-dev,
                libssl-dev,
+               libidn11-dev,
                libmongoc-dev,
                libbson-dev,
-               libyaml-dev
-Standards-Version: 3.9.6
-Vcs-Browser: https://github.com/acetcom/nextepc
-Vcs-Git: git://github.com/acetcom/nextepc
-Homepage: http://nextepc.org/
+               libsctp-dev,
+               libyaml-dev,
+Standards-Version: 3.9.8
+Vcs-Browser: https://github.com/open5gs/nextepc
+Vcs-Git: git://github.com/open5gs/nextepc
+Homepage: https://open5gs.org/nextepc
 
 Package: nextepc-core
 Architecture: any
@@ -116,8 +120,7 @@ Description: Open Source based 3GPP EPC HSS (Home Subscriber Server)
 Package: nextepc
 Architecture: any
 Multi-Arch: same
-Depends: ${shlibs:Depends},
-         ${misc:Depends},
+Depends: ${misc:Depends},
          mongodb,
          nextepc-core (= ${binary:Version}),
          nextepc-mme (= ${binary:Version}),
@@ -131,3 +134,14 @@ Description: Open Source based 3GPP EPC (metapackage)
  .
  This is a metapackage that depends on all the nextepc parts.
  (MME, SGW, PGW, HSS, PCRF)
+
+Package: nextepc-dbg
+Architecture: any
+Multi-Arch: same
+Depends: ${misc:Depends},
+         nextepc (= ${binary:Version})
+Description: Debug symbols for NextEPC
+ NextEPC is a C-language Open Source implementation of the 3GPP Evolved
+ Packet Core, i.e. the core network of an LTE network.
+ .
+ This package contains debug symbols for NextEPC.

debian/rules

@@ -14,9 +14,15 @@ export DEB_BUILD_MAINT_OPTIONS = hardening=+all
 %:
 	dh $@ --with autoreconf --with systemd
 
+override_dh_strip:
+	dh_strip --dbg-package=nextepc-dbg
+
 override_dh_auto_test:
 	sctp_exclude_list=; \
 	if ! cat /proc/net/protocols | grep SCTP > /dev/null; then \
-		sctp_exclude_list="-x testsctp"; \
+		sctp_exclude_list="-x sctp-test"; \
 	fi; \
-	lib/core/test/testcore $$sctp_exclude_list || exit; \
+	test/testunit -f test/sample.conf $$sctp_exclude_list || exit; \
+
+#override_dh_makeshlibs:
+#	dh_makeshlibs -V

docker/README.md

@@ -0,0 +1,76 @@
+Docker running example
+===========================================
+* Build Image
+  $ docker-compose build
+
+* Development 
+  $ docker-compose run dev
+
+* Runtime
+  $ docker-compose \
+    -f docker-compose.yml -f docker-compose.run.yml run run
+
+* Test
+  $ docker-compose \
+    -f docker-compose.yml -f docker-compose.test.yml run test
+
+* Test(ubuntu:artful)
+  $ TAG=artful docker-compose build
+  $ TAG=artful docker-compose \
+    -f docker-compose.yml -f docker-compose.test.yml run test
+
+* Development(fedora:latest)
+  $ DIST=fedora docker-compose build
+  $ DIST=fedora docker-compose run dev
+
+* Runtime(debian:jessie)
+  $ DIST=debian TAG=jessie docker-compose build
+  $ DIST=debian TAG=jessie docker-compose 
+    -f docker-compose.yml -f docker-compose.run.yml run run
+
+* All Test with All Environment
+  $ ./check.sh
+
+* Run WebUI 
+  $ docker-compose up -d
+
+For OpenSUSE Build Service Release
+===========================================
+
+* Build Package
+  $ ./build-aux/git-version-gen . > .tarball-version
+  $ dpkg-source -b .
+  $ rm -f .tarball-version
+
+* Get Release Key
+  $ wget http://download.opensuse.org/repositories/home:/acetcom:/open5gs:/latest/xUbuntu_18.04/Release.key
+  $ sudo apt-key add Release.key
+
+* Setup Repository
+  $ sudo sh -c "echo 'deb https://download.opensuse.org/repositories/home:/acetcom:/open5gs:/latest/xUbuntu_18.04/ ./' > /etc/apt/sources.list.d/open5gs-latest.list"
+  $ sudo apt-get update
+  
+For Launchpad Release
+===========================================
+
+* Run Docker
+  $ docker-compose run dev
+
+* Setup Debian Environment
+export DEBFULLNAME='Sukchan Lee'
+export DEBEMAIL='acetcom@gmail.com'
+
+* Transfer GPG key
+  $ gpg --export-secret-keys --armor --output private.asc
+  $ gpg --import private.asc
+  $ gpg --export > public.asc
+  $ gpg --import public.asc
+
+* Upload LaunchPad
+  $ dch -i
+  $ debuild -S
+  $ dput ppa:acetcom/nextepc *.source.changes
+
+* Build pckage
+  $ dpkg-buildpackage
+

docker/build/Dockerfile

@@ -0,0 +1,24 @@
+ARG dist=ubuntu
+ARG tag=latest
+ARG username=acetcom
+FROM ${username}/${dist}-${tag}-nextepc-base
+
+MAINTAINER Sukchan Lee <acetcom@gmail.com>
+
+WORKDIR /root
+COPY setup.sh /root
+
+ARG USER=acetcom
+ARG REPO=nextepc
+ARG BRANCH=master
+RUN	git clone https://github.com/$USER/$REPO
+ADD https://api.github.com/repos/$USER/$REPO/git/refs/heads/$BRANCH /root/nextepc-ver.json
+
+RUN	cd nextepc && \
+	git fetch && git checkout -f -B master origin/master && \
+    autoreconf -f -i && \
+    ./configure \
+        --prefix=/usr \
+        --sysconfdir=/etc \
+        --localstatedir=/var && \
+    make -j `nproc` install

docker/centos/7/dev/Dockerfile

@@ -0,0 +1,22 @@
+ARG dist=centos
+ARG tag=latest
+ARG username=acetcom
+FROM ${username}/${dist}-${tag}-nextepc-base
+
+MAINTAINER Sukchan Lee <acetcom@gmail.com>
+
+RUN yum -y install \
+        cscope \
+        vim \
+        sudo \
+        iputils \
+        net-tools
+
+COPY setup.sh /root
+
+ARG username=acetcom
+RUN useradd -m --uid=1000 ${username} && \
+    echo "${username} ALL=(root) NOPASSWD:ALL" > /etc/sudoers.d/${username} && \
+    chmod 0440 /etc/sudoers.d/${username}
+
+WORKDIR /home/${username}

docker/debian/jessie/base/Dockerfile

@@ -0,0 +1,37 @@
+ARG dist=debian
+ARG tag=jessie
+FROM ${dist}:${tag}
+
+MAINTAINER Sukchan Lee <acetcom@gmail.com>
+
+RUN	apt-get update && \
+    apt-get upgrade -y && \
+    apt-get install -y --no-install-recommends \
+        autoconf \
+        automake \
+        libtool \
+        gcc \
+        flex \
+        bison \
+        git \
+        libsctp-dev \
+        libgnutls28-dev \
+        libgcrypt-dev \
+        libssl-dev \
+        libidn11-dev \
+        libyaml-dev \
+        build-essential \
+        iproute2 \
+        ca-certificates \
+        netbase \
+        curl \
+        pkg-config && \
+    apt-get clean
+
+WORKDIR /root
+RUN curl -SLO "https://github.com/mongodb/mongo-c-driver/releases/download/1.9.2/mongo-c-driver-1.9.2.tar.gz"; \
+    tar xzf mongo-c-driver-1.9.2.tar.gz; \
+    cd mongo-c-driver-1.9.2; \
+    ./configure --disable-automatic-init-and-cleanup; \
+    make -j `nproc` install; \
+    ldconfig;

docker/debian/jessie/dev

@@ -0,0 +1 @@
+../../ubuntu/bionic/dev

docker/debian/latest

@@ -0,0 +1 @@
+stretch

docker/debian/stable

@@ -0,0 +1 @@
+stretch

docker/debian/stretch/base/Dockerfile

@@ -0,0 +1,40 @@
+ARG dist=debian
+ARG tag=stable
+FROM ${dist}:${tag}
+
+MAINTAINER Sukchan Lee <acetcom@gmail.com>
+
+ARG tag=stable
+#RUN apt-get update && \
+#    apt-get install -y netselect-apt && \
+#    apt-get clean && \
+#    if [ "x$tag" = "xlatest" ]; then \
+#        netselect-apt -o /etc/apt/sources.list; \
+#    else \
+#        netselect-apt ${tag} -o /etc/apt/sources.list; \
+#    fi
+
+RUN apt-get update && \
+    apt-get upgrade -y && \
+    apt-get install -y --no-install-recommends \
+        autoconf \
+        automake \
+        libtool \
+        gcc \
+        flex \
+        bison \
+        git \
+        libsctp-dev \
+        libgnutls28-dev \
+        libgcrypt-dev \
+        libssl-dev \
+        libidn11-dev \
+        libmongoc-dev \
+        libbson-dev \
+        libyaml-dev \
+        build-essential \
+        iproute2 \
+        ca-certificates \
+        netbase \
+        pkg-config && \
+    apt-get clean

docker/debian/stretch/dev

@@ -0,0 +1 @@
+../../ubuntu/bionic/dev

docker/docker-compose.run.yml

@@ -3,7 +3,7 @@ version: '3'
 services:
   run:
     network_mode: "host"
-    image: ${USER}/${DIST-ubuntu}-${TAG-latest}-build
+    image: ${USER}/${DIST-ubuntu}-${TAG-latest}-nextepc-build
     depends_on:
       - mongodb
       - build

docker/docker-compose.test.yml

@@ -2,7 +2,7 @@ version: '3'
 
 services:
   test:
-    image: ${USER}/${DIST-ubuntu}-${TAG-latest}-build
+    image: ${USER}/${DIST-ubuntu}-${TAG-latest}-nextepc-build
     depends_on:
       - mongodb
       - build

docker/docker-compose.yml

@@ -0,0 +1,84 @@
+version: '3'
+
+services:
+  mongodb:
+    image: mongo
+    container_name: nextepc-mongodb
+    ports:
+      - "27017:27017"
+    volumes:
+      - mongodb:/data/db
+
+  webui:
+    build: webui
+    image: ${USER}/nextepc-webui
+    container_name: nextepc-webui
+    depends_on:
+      - mongodb
+    ports:
+      - "3000:3000"
+    depends_on:
+      - mongodb
+    environment:
+      DB_URI: mongodb://mongodb/nextepc
+
+  base:
+    build:
+      context: ./${DIST-ubuntu}/${TAG-latest}/base
+      args:
+        dist: ${DIST-ubuntu}
+        tag: ${TAG-latest}
+    image: ${USER}/${DIST-ubuntu}-${TAG-latest}-nextepc-base
+    command: /bin/bash -c "echo 'base' services"
+
+  build:
+    build:
+      context: ./build
+      args:
+        dist: ${DIST-ubuntu}
+        tag: ${TAG-latest}
+        username: ${USER}
+    image: ${USER}/${DIST-ubuntu}-${TAG-latest}-nextepc-build
+    depends_on:
+      - base
+    command: /bin/bash -c "echo 'build' services"
+
+  dev:
+    build:
+      context: ./${DIST-ubuntu}/${TAG-latest}/dev
+      args:
+        dist: ${DIST-ubuntu}
+        tag: ${TAG-latest}
+        username: ${USER}
+    image: ${USER}/${DIST-ubuntu}-${TAG-latest}-nextepc-dev
+    depends_on:
+      - mongodb
+      - base
+    environment:
+      - DB_URI=mongodb://mongodb/nextepc
+      - DISPLAY=$DISPLAY
+    # - DISPLAY=docker.for.mac.localhost:0
+    cap_add:
+      - NET_ADMIN
+    devices:
+      - "/dev/net/tun:/dev/net/tun"
+    sysctls:
+      - net.ipv6.conf.all.disable_ipv6=0
+    volumes:
+      - home:/home/${USER}
+      - ${HOME}:/mnt
+      - /tmp/.X11-unix:/tmp/.X11-unix
+    # - /etc/localtime:/etc/localtime:ro
+    # - /usr/share/zoneinfo/Europe/Helsinki:/etc/localtime:ro
+    hostname: nextepc-dev
+    user: ${USER}
+    entrypoint: /bin/bash -c "/bin/bash -c \"$${@}\""
+    command: |
+        /bin/bash -c "
+            sudo chmod 666 /dev/net/tun
+            sudo /root/setup.sh
+            /bin/bash || exit 0
+        "
+volumes:
+  mongodb: {}
+  home: {}

docker/fedora/29/base/Dockerfile

@@ -0,0 +1,24 @@
+ARG dist=fedora
+ARG tag=latest
+FROM ${dist}:${tag}
+
+MAINTAINER Sukchan Lee <acetcom@gmail.com>
+
+RUN dnf -y install \
+        autoconf \
+        libtool \
+        gcc \
+        make \
+        flex \
+        bison \
+        git \
+        lksctp-tools-devel \
+        libidn-devel \
+        gnutls-devel \
+        libgcrypt-devel \
+        mongo-c-driver-devel \
+        openssl-devel \
+        cyrus-sasl-devel \
+        snappy-devel \
+        libyaml-devel \
+        iproute

docker/fedora/29/dev/Dockerfile

@@ -0,0 +1,22 @@
+ARG dist=fedora
+ARG tag=latest
+ARG username=acetcom
+FROM ${username}/${dist}-${tag}-nextepc-base
+
+MAINTAINER Sukchan Lee <acetcom@gmail.com>
+
+RUN dnf -y install \
+        cscope \
+        vim \
+        sudo \
+        iputils \
+        net-tools
+
+COPY setup.sh /root
+
+ARG username=acetcom
+RUN useradd -m --uid=1000 ${username} && \
+    echo "${username} ALL=(root) NOPASSWD:ALL" > /etc/sudoers.d/${username} && \
+    chmod 0440 /etc/sudoers.d/${username}
+
+WORKDIR /home/${username}

docker/fedora/latest

@@ -0,0 +1 @@
+29

docker/ubuntu/artful

@@ -0,0 +1 @@
+bionic

docker/ubuntu/bionic/base/Dockerfile

@@ -0,0 +1,30 @@
+ARG dist=ubuntu
+ARG tag=latest
+FROM ${dist}:${tag}
+
+MAINTAINER Sukchan Lee <acetcom@gmail.com>
+
+RUN apt-get update && \
+    apt-get upgrade -y && \
+    apt-get install -y --no-install-recommends \
+        autoconf \
+        automake \
+        libtool \
+        gcc \
+        flex \
+        bison \
+        git \
+        libsctp-dev \
+        libgnutls28-dev \
+        libgcrypt-dev \
+        libssl-dev \
+        libidn11-dev \
+        libmongoc-dev \
+        libbson-dev \
+        libyaml-dev \
+        build-essential \
+        iproute2 \
+        ca-certificates \
+        netbase \
+        pkg-config && \
+    apt-get clean

docker/ubuntu/bionic/dev/Dockerfile

@@ -0,0 +1,36 @@
+ARG dist=ubuntu
+ARG tag=latest
+ARG username=acetcom
+FROM ${username}/${dist}-${tag}-nextepc-base
+
+MAINTAINER Sukchan Lee <acetcom@gmail.com>
+
+RUN apt-get update && \
+    apt-get upgrade -y && \
+    DEBIAN_FRONTEND=noninteractive \
+    apt-get install -y --no-install-recommends \
+        git-buildpackage \
+        debhelper \
+        devscripts \
+        osc \
+        dput \
+        dh-autoreconf \
+        dh-systemd \
+        manpages-dev \
+        fakeroot \
+        cscope \
+        vim \
+        sudo \
+        iputils-ping \
+        wireshark \
+        net-tools && \
+    apt-get clean
+
+COPY setup.sh /root
+
+ARG username=acetcom
+RUN useradd -m --uid=1000 ${username} && \
+    echo "${username} ALL=(root) NOPASSWD:ALL" > /etc/sudoers.d/${username} && \
+    chmod 0440 /etc/sudoers.d/${username}
+
+WORKDIR /home/${username}

docker/ubuntu/latest

@@ -0,0 +1 @@
+bionic

docker/ubuntu/xenial

@@ -0,0 +1 @@
+bionic

docs/.gitignore

@@ -0,0 +1,3 @@
+_site
+.sass-cache
+.jekyll-metadata

docs/Gemfile

@@ -0,0 +1,24 @@
+source "https://rubygems.org"
+
+# Hello! This is where you manage which Jekyll version is used to run.
+# When you want to use a different version, change it below, save the
+# file and run `bundle install`. Run Jekyll with `bundle exec`, like so:
+#
+#     bundle exec jekyll serve
+#
+# This will help ensure the proper Jekyll version is running.
+# Happy Jekylling!
+
+gem "jekyll", "~> 3.8.5"
+gem "minima", "~> 2.0"
+gem 'jekyll-seo-tag'
+
+# If you want to use GitHub Pages, remove the "gem "jekyll"" above and
+# uncomment the line below. To upgrade, run `bundle update github-pages`.
+# gem "github-pages", group: :jekyll_plugins
+
+# If you have any plugins, put them here!
+group :jekyll_plugins do
+  gem "jekyll-feed", "~> 0.6"
+  gem "jekyll-redirect-from"
+end

docs/Gemfile.lock

@@ -0,0 +1,77 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.6.0)
+      public_suffix (>= 2.0.2, < 4.0)
+    colorator (1.1.0)
+    concurrent-ruby (1.1.5)
+    em-websocket (0.5.1)
+      eventmachine (>= 0.12.9)
+      http_parser.rb (~> 0.6.0)
+    eventmachine (1.2.7)
+    ffi (1.10.0)
+    forwardable-extended (2.6.0)
+    http_parser.rb (0.6.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
+    jekyll (3.8.5)
+      addressable (~> 2.4)
+      colorator (~> 1.0)
+      em-websocket (~> 0.5)
+      i18n (~> 0.7)
+      jekyll-sass-converter (~> 1.0)
+      jekyll-watch (~> 2.0)
+      kramdown (~> 1.14)
+      liquid (~> 4.0)
+      mercenary (~> 0.3.3)
+      pathutil (~> 0.9)
+      rouge (>= 1.7, < 4)
+      safe_yaml (~> 1.0)
+    jekyll-feed (0.12.1)
+      jekyll (>= 3.7, < 5.0)
+    jekyll-redirect-from (0.15.0)
+      jekyll (>= 3.3, < 5.0)
+    jekyll-sass-converter (1.5.2)
+      sass (~> 3.4)
+    jekyll-seo-tag (2.6.0)
+      jekyll (~> 3.3)
+    jekyll-watch (2.2.1)
+      listen (~> 3.0)
+    kramdown (1.17.0)
+    liquid (4.0.3)
+    listen (3.1.5)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
+      ruby_dep (~> 1.2)
+    mercenary (0.3.6)
+    minima (2.5.0)
+      jekyll (~> 3.5)
+      jekyll-feed (~> 0.9)
+      jekyll-seo-tag (~> 2.1)
+    pathutil (0.16.2)
+      forwardable-extended (~> 2.6)
+    public_suffix (3.0.3)
+    rb-fsevent (0.10.3)
+    rb-inotify (0.10.0)
+      ffi (~> 1.0)
+    rouge (3.3.0)
+    ruby_dep (1.5.0)
+    safe_yaml (1.0.5)
+    sass (3.7.4)
+      sass-listen (~> 4.0.0)
+    sass-listen (4.0.0)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  jekyll (~> 3.8.5)
+  jekyll-feed (~> 0.6)
+  jekyll-redirect-from
+  jekyll-seo-tag
+  minima (~> 2.0)
+
+BUNDLED WITH
+   2.0.1

docs/_config.yml

@@ -0,0 +1,108 @@
+# Welcome to Jekyll!
+#
+# This config file is meant for settings that affect your whole blog, values
+# which you are expected to set up once and rarely edit after that. If you find
+# yourself editing this file very often, consider using Jekyll's data files
+# feature for the data you need to update frequently.
+#
+# For technical reasons, this file is *NOT* reloaded automatically when you use
+# 'bundle exec jekyll serve'. If you change this file, please restart the server process.
+
+# Site settings
+# These are used to personalize your new site. If you look in the HTML files,
+# you will see them accessed via {{ site.title }}, {{ site.email }}, and so on.
+# You can create any custom variable you would like, and they will be accessible
+# in the templates via {{ site.myvariable }}.
+title: NextEPC
+email: acetcom@gmail.com
+description: >- # this means to ignore newlines until "baseurl:"
+  An open source implementation of the Evolved Packet Core of LTE networks 
+  supporting 3GPP Release 13.
+baseurl: "/nextepc" # the subpath of your site, e.g. /blog
+url: "https://open5gs.org" # the base hostname & protocol for your site, e.g. http://example.com
+author: "Sukchan Lee"
+github_username: acetcom
+google_analytics: UA-139225646-2
+
+# Build settings
+markdown: kramdown
+plugins:
+  - jekyll-feed
+  - jekyll-seo-tag
+  - jekyll-redirect-from
+
+include:
+  - _pages
+
+# Exclude from processing.
+# The following items will not be processed, by default. Create a custom list
+# to override the default setting.
+exclude:
+  - Gemfile
+  - Gemfile.lock
+  - node_modules
+  - vendor/bundle/
+  - vendor/cache/
+  - vendor/gems/
+  - vendor/ruby/
+
+# Minima date format
+# refer to http://shopify.github.io/liquid/filters/date/ if you want to customize this
+minima_reboot:
+  date_format: "%Y-%m-%d %H:%M"
+
+footer_icons:
+  - username: open5gs
+    url: https://open5gs.org
+    icon: icon-github.svg
+
+header_pages:
+  - _pages/docs.md
+  - _pages/faq.md
+  - _pages/about.md
+  - _pages/github.md
+
+show_excerpts: true
+
+# Collections
+collections:
+  docs:
+    output: true
+    permalink: /:collection/:path/
+
+defaults:
+  # _pages
+  - scope:
+      path: ""
+      type: pages
+    values:
+      layout: page
+  # _posts
+  - scope:
+      path: ""
+      type: posts
+    values:
+      layout: post
+  # _docs
+  - scope:
+      path: ""
+      type: docs
+    values:
+      layout: post
+
+# Archives
+#  Type
+#  - GitHub Pages compatible archive pages built with Liquid ~> type: liquid (default)
+#  - Jekyll Archives plugin archive pages ~> type: jekyll-archives
+#  Path (examples)
+#  - Archive page should exist at path when using Liquid method or you can
+#    expect broken links (especially with breadcrumbs enabled)
+#  - <base_path>/tags/my-awesome-tag/index.html ~> path: /tags/
+#  - <base_path/categories/my-awesome-category/index.html ~> path: /categories/
+#  - <base_path/my-awesome-category/index.html ~> path: /
+category_archive:
+  type: liquid
+  path: /categories/
+tag_archive:
+  type: liquid
+  path: /tags/

docs/_docs/guide/01-quickstart.md

@@ -0,0 +1,241 @@
+---
+title: Qucikstart
+---
+
+**Note:** NextEPC supports installation of packages in *Debian/Ubuntu and openSUSE* environments. *CentOS, Fedora, FreeBSD, and Mac OSX* require you to [build with source code]({{ site.url }}{{ site.baseurl }}/docs/guide/02-building-nextepc-from-sources)
+{: .notice--warning}
+
+### Install NextEPC with a Package Manager
+---
+
+The NextEPC package is available on the recent versions of *Ubuntu*.
+
+```bash
+$ sudo apt update
+$ sudo apt install software-properties-common
+$ sudo add-apt-repository ppa:open5gs/latest
+$ sudo apt update
+$ sudo apt install nextepc
+```
+
+The NextEPC package is also available on [OBS](https://build.opensuse.org/package/show/home:acetcom:open5gs:snapshot/nextepc). First, install the authentication key as shown below.
+
+```bash
+$ sudo apt update
+$ sudo apt install wget gnupg
+$ wget https://download.opensuse.org/repositories/home:/acetcom:/open5gs:/latest/Debian_9.0/Release.key
+$ sudo apt-key add Release.key
+
+```
+
+In Debian 9.0(stretch), you can install it as follows:
+
+```bash
+$ sudo sh -c "echo 'deb http://download.opensuse.org/repositories/home:/acetcom:/open5gs:/latest/Debian_9.0/ ./' > /etc/apt/sources.list.d/open5gs.list"
+$ sudo apt update
+$ sudo apt install nextepc
+```
+
+Other Linux distributions can be installed by changing the path.
+
+```
+http://download.opensuse.org/repositories/home:/acetcom:/open5gs:/latest/Debian_9.0/
+http://download.opensuse.org/repositories/home:/acetcom:/open5gs:/latest/Raspbian_9.0/
+http://download.opensuse.org/repositories/home:/acetcom:/open5gs:/latest/xUbuntu_16.04/
+http://download.opensuse.org/repositories/home:/acetcom:/open5gs:/latest/xUbuntu_17.10/
+http://download.opensuse.org/repositories/home:/acetcom:/open5gs:/latest/xUbuntu_18.04/
+http://download.opensuse.org/repositories/home:/acetcom:/open5gs:/latest/xUbuntu_18.10/
+```
+
+[Martin Hauke](https://build.opensuse.org/user/show/mnhauke) packaged NextEPC for *openSUSE* on [OBS](https://build.opensuse.org/package/show/home:mnhauke:nextepc/nextepc).
+
+```bash
+$ sudo zypper addrepo -f obs://home:mnhauke:nextepc home:mnhauke:nextepc
+$ sudo zypper install nextepc
+$ sudo zypper install mongodb-server mongodb-shell
+```
+
+### Configure NextEPC
+---
+
+Modify [/etc/nextepc/mme.conf](https://github.com/{{ site.github_username }}/nextepc/blob/master/support/config/mme.conf.in) to set the S1AP/GTP-C IP address, PLMN ID, and TAC
+
+```diff
+diff -u /etc/nextepc/mme.conf.old /etc/nextepc/mme.conf
+--- mme.conf.old	2018-04-15 18:28:31.000000000 +0900
++++ mme.conf	2018-04-15 19:53:10.000000000 +0900
+@@ -8,18 +8,20 @@ parameter:
+ mme:
+     freeDiameter: mme.conf
+     s1ap:
++      addr: 192.168.0.100
+     gtpc:
++      addr: 192.168.0.100
+     gummei:
+       plmn_id:
+-        mcc: 001
+-        mnc: 01
++        mcc: 901
++        mnc: 70
+       mme_gid: 2
+       mme_code: 1
+     tai:
+       plmn_id:
+-        mcc: 001
+-        mnc: 01
+-      tac: 12345
++        mcc: 901
++        mnc: 70
++      tac: 7
+     security:
+         integrity_order : [ EIA1, EIA2, EIA0 ]
+         ciphering_order : [ EEA0, EEA1, EEA2 ]
+```
+
+Modify [/etc/nextepc/sgw.conf](https://github.com/{{ site.github_username }}/nextepc/blob/master/support/config/sgw.conf.in) to set the GTP-U IP address.  
+```diff
+diff -u /etc/nextepc/sgw.conf.old /etc/nextepc/sgw.conf
+--- sgw.conf.old	2018-04-15 18:30:25.000000000 +0900
++++ sgw.conf	2018-04-15 18:30:30.000000000 +0900
+@@ -14,3 +14,4 @@
+     gtpc:
+       addr: 127.0.0.2
+     gtpu:
++      addr: 192.168.0.100
+```
+
+After changing conf files, please restart NextEPC daemons.
+
+```bash
+$ sudo systemctl restart nextepc-mmed
+$ sudo systemctl restart nextepc-sgwd
+```
+
+### Install WebUI of NextEPC
+---
+
+[Node.js](https://nodejs.org/) is required to install WebUI of NextEPC
+
+1. *Debian and Ubuntu* based Linux distributions can install [Node.js](https://nodejs.org/) as follows:
+
+    ```bash
+    $ sudo apt update
+    $ sudo apt install curl
+    $ curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -
+    $ sudo apt install nodejs
+    ```
+
+2. To install [Node.js](https://nodejs.org/) on *openSUSE*, run the following:
+
+    ```bash
+    $ sudo zypper install nodejs8
+    ```
+
+You can now install WebUI of NextEPC.
+
+```bash
+$ curl -sL {{ site.url }}{{ site.baseurl }}/assets/webui/install | sudo -E bash -
+```
+
+### Register Subscriber Information
+---
+
+Connect to `http://localhost:3000` and login with **admin** account.
+
+> Username : admin  
+> Password : 1423
+
+**Tip:** You can change the password in _Account_ Menu.
+{: .notice--info}
+
+To add subscriber information, you can do WebUI operations in the following order:
+
+  1. Go to `Subscriber` Menu.
+  2. Click `+` Button to add a new subscriber.
+  3. Fill the IMSI, security context(K, OPc, AMF), and APN of the subscriber.
+  4. Click `SAVE` Button
+
+**Tip:** This addition immediately affects NextEPC without restaring any daemon.
+{: .notice--info}
+
+
+### Adding a route for UE to have Internet connectivity
+---
+
+If your phone can connect to internet, you must run the following command in NextEPC-PGW installed host. 
+
+```bash
+$ sudo sh -c "echo 1 > /proc/sys/net/ipv4/ip_forward"
+$ sudo iptables -t nat -A POSTROUTING -o 'interface-name' -j MASQUERADE
+$ sudo iptables -I INPUT -i pgwtun -j ACCEPT
+```
+
+**Note:** In the above command, you should replace `'interface-name'` with your interface name that can connect to the internet. (For example, `enp0s25`, `wls3`, and so on).
+{: .notice--danger}
+
+### Turn on your eNodeB and Phone
+---
+
+- You can see actual traffic through wireshark -- [[srsenb.pcapng]]({{ site.url }}{{ site.baseurl }}/assets/pcapng/srsenb.pcapng).
+- You can view the log at `/var/log/nextepc/*.log`.
+
+### Troubleshooting
+---
+
+Problem with NextEPC can be filed as [GitHub Issues](https://github.com/open5gs/nextepc/issues). Please include the following to get help:
+
+- Attach `*.pcapng` file created by wireskark.
+- Attach configuration files at `/etc/nextepc/*.conf`.
+- Attach log files at `/var/log/nextepc/*.log`.
+
+You can modify the configuration file to record more logs.
+
+```diff
+diff -u /etc/nextepc/mme.conf.old /etc/nextepc/mme.conf
+--- mme.conf.old	2018-04-15 18:28:31.000000000 +0900
++++ mme.conf	2018-04-15 19:53:10.000000000 +0900
+@@ -2,6 +2,7 @@
+
+ logger:
+     file: @LOCALSTATE_DIR@/log/nextepc/mme.log
++    level: debug
+
+ parameter:
+```
+
+After changing conf files, please restart NextEPC daemons.
+
+```bash
+$ sudo systemctl restart nextepc-mmed
+$ sudo systemctl restart nextepc-sgwd
+```
+
+### Uninstall NextEPC and WebUI
+
+How to remove NextEPC package:
+
+1. On *Ubuntu*:
+
+    ```bash
+    $ sudo apt purge nextepc
+    $ sudo apt autoremove
+    ```
+
+2. On *openSUSE*:
+
+    ```bash
+    $ sudo zypper rm nextepc
+    ```
+
+You may need to remove manually `/var/log/nextepc` unless it is empty.
+
+```bash
+$ sudo rm -Rf /var/log/nextepc
+```
+
+The WebUI of NextEPC can be removed as follows:
+
+```bash
+curl -sL {{ site.url }}{{ site.baseurl }}/assets/webui/uninstall | sudo -E bash -
+```
+

docs/_docs/guide/02-building-nextepc-from-sources.md

@@ -0,0 +1,400 @@
+---
+title: Building nextepc from Sources
+head_inline: "<style> .blue { color: blue; } </style>"
+---
+
+This post explains how to compile and install the source code on **Debian/Ubuntu** based Linux Distribution.
+{: .blue}
+
+### Getting MongoDB
+---
+
+Install MongoDB with package manager.
+
+```bash
+$ sudo apt update
+$ sudo apt install mongodb
+$ sudo systemctl start mongodb (if '/usr/bin/mongod' is not running)
+```
+
+### Setting up TUN device (No persistent after rebooting)
+---
+
+Create the TUN device with the interface name `pgwtun`.
+
+```bash
+$ sudo ip tuntap add name pgwtun mode tun
+$ sudo ip addr add 45.45.0.1/16 dev pgwtun
+$ sudo ip addr add cafe::1/64 dev pgwtun
+$ sudo ip link set pgwtun up
+```
+
+The script provided in [$GIT_REPO/support/network/restart.sh](https://github.com/{{ site.github_username }}/nextepc/blob/master/support/network/restart.sh) makes it easy to configure the TUN device as follows:  
+`$ sudo ./support/network/restart.sh`
+{: .notice--info}
+
+### Building NextEPC
+---
+
+Install the depedencies for building the source code.
+
+```bash
+$ sudo apt install autoconf libtool gcc pkg-config git flex bison libsctp-dev libgnutls28-dev libgcrypt-dev libssl-dev libidn11-dev libmongoc-dev libbson-dev libyaml-dev
+```
+
+Git clone with `--recursive` option.
+
+```bash
+➜  open5gs git clone --recursive https://github.com/{{ site.github_username }}/nextepc
+```
+
+To compile with autotools:
+
+```bash
+➜  open5gs cd nextepc
+➜  nextepc git:(master) ✗ autoreconf -iv
+➜  nextepc git:(master) ✗ ./configure --prefix=`pwd`/install
+➜  nextepc git:(master) ✗ make -j `nproc`
+```
+
+Check whether the compilation is correct.
+```bash
+➜  nextepc git:(master) ✗ make check
+```
+
+You need to perform the **installation process**.
+```bash
+➜  nextepc git:(master) ✗ make install
+```
+
+Check whether the installation is correct.
+```bash
+➜  nextepc git:(master) ✗ ./test/testcomplex
+s1setup_test        : SUCCESS
+attach_test         : SUCCESS
+volte_test          : SUCCESS
+handover_test       : SUCCESS
+All tests passed.
+```
+
+**Tip:** You can also check the result of `./test/testcomplex` with a tool that captures packets. If you are running `wireshark`, select the `loopback` interface and set FILTER to `s1ap || gtpv2 || diameter || gtp`.  You can see the virtually created packets. [[testcomplex.pcapng]]({{ site.url }}{{ site.baseurl }}/assets/pcapng/testcomplex.pcapng)
+{: .notice--info}
+
+### Configure NextEPC
+---
+
+**Note:** In the developer environment, all settings can be managed in one place, such as [$INSTALL_PREFIX/install/etc/nextepc/nextepc.conf](https://github.com/{{ site.github_username }}/nextepc/blob/master/support/config/nextepc.conf.in).
+{: .notice--danger}
+
+Modify [$INSTALL_PREFIX/install/etc/nextepc/nextepc.conf](https://github.com/{{ site.github_username }}/nextepc/blob/master/support/config/nextepc.conf.in) to set the S1AP/GTP-C/GTP-U IP address, PLMN ID, and TAC
+
+```diff
+diff -u ./install/etc/nextepc/nextepc.conf.old ./install/etc/nextepc/nextepc.conf
+--- nextepc.conf.old	2018-04-15 18:28:31.000000000 +0900
++++ nextepc.conf	2018-04-15 19:53:10.000000000 +0900
+@@ -74,6 +74,7 @@ mme:
+ #      dev: eth0
+ #
+     s1ap:
++      addr: 192.168.0.100
+
+ #
+ #  <GTP-C Server>>
+@@ -87,6 +88,7 @@ mme:
+ #      - addr: ::1
+ #
+     gtpc:
++      addr: 192.168.0.100
+
+ #
+ #  <GUMMEI>
+@@ -110,8 +112,8 @@ mme:
+ #
+     gummei:
+       plmn_id:
+-        mcc: 001
+-        mnc: 01
++        mcc: 901
++        mnc: 70
+       mme_gid: 2
+       mme_code: 1
+
+@@ -149,9 +151,9 @@ mme:
+ #
+     tai:
+       plmn_id:
+-        mcc: 001
+-        mnc: 01
+-      tac: 12345
++        mcc: 901
++        mnc: 70
++      tac: 7
+
+     security:
+         integrity_order : [ EIA1, EIA2, EIA0 ]
+@@ -242,6 +244,7 @@ sgw:
+ #    gtpu:
+ #
+     gtpu:
++      addr: 192.168.0.100
+
+ pgw:
+     freeDiameter: pgw.conf
+```
+
+### Running NextEPC
+---
+
+For developers, it provides `nextepc-epcd` daemon that includes both *MME*, *SGW*, *PGW*, *HSS*, and *PCRF*.
+
+```bash
+➜  nextepc git:(master) ✗ ./nextepc-epcd
+04/06 23:13:03.367: [core] INFO: NextEPC daemon start (main.c:169)
+
+PID[6404]: '/home/acetcom/Documents/git/open5gs/nextepc/install/var/run/nextepc-epcd/pid'
+File Logging: '/home/acetcom/Documents/git/open5gs/nextepc/install/var/log/nextepc/nextepc.log'
+MongoDB URI: 'mongodb://localhost/nextepc'
+Configuration: '/home/acetcom/Documents/git/open5gs/nextepc/install/etc/nextepc/nextepc.conf'
+04/06 23:13:03.369: [core] INFO: PCRF try to initialize (epc.c:37)
+...
+```
+
+Several command line options are provided.
+
+```bash
+➜  nextepc git:(master) ✗ ./nextepc-epcd -h
+Password:
+NextEPC daemon v0.4.0.67-078c - Apr  6 2019 17:20:24
+Usage: ./nextepc-epcd [arguments]
+
+Arguments:
+   -v                   Show version
+   -h                   Show help
+   -D                   Start as daemon
+   -f                   Set configuration file name
+   -l log_file          Log file path to be logged to
+   -p pid_file          PID file path
+   -d core:gtp:event    Enable debugging
+   -t sock:mem:         Enable trace
+```
+
+
+### Building WebUI of NextEPC
+---
+
+[Node.js](https://nodejs.org/) is required to build WebUI of NextEPC
+
+```bash
+$ sudo apt install curl
+$ curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -
+$ sudo apt install nodejs
+```
+
+Install the dependencies to run WebUI
+
+```bash
+➜  nextepc git:(master) ✗ cd webui
+➜  webui git:(master) ✗ npm install
+```
+
+The WebUI runs as an [npm](https://www.npmjs.com/) script.
+
+```bash
+➜  webui git:(master) ✗ npm run dev
+```
+
+### Register Subscriber Information
+---
+
+Connect to `http://localhost:3000` and login with **admin** account.
+
+> Username : admin  
+> Password : 1423
+
+**Note:**
+You can change the password in _Account_ Menu.
+{: .notice--info}
+
+To add subscriber information, you can do WebUI operations in the following order:
+
+  1. Go to `Subscriber` Menu.
+  2. Click `+` Button to add a new subscriber.
+  3. Fill the IMSI, security context(K, OPc, AMF), and APN of the subscriber.
+  4. Click `SAVE` Button
+
+**Tip:** This addition immediately affects NextEPC without restaring any daemon.
+{: .notice--warning}
+
+### Adding a route for UE to have internet connectivity
+---
+
+If your phone can connect to internet, you must run the following command in NextEPC-PGW installed host. 
+
+```bash
+$ sudo sh -c "echo 1 > /proc/sys/net/ipv4/ip_forward"
+$ sudo iptables -t nat -A POSTROUTING -o 'interface-name' -j MASQUERADE
+$ sudo iptables -I INPUT -i pgwtun -j ACCEPT
+```
+
+**Note:** In the above command, you should replace `'interface-name'` with your interface name that can connect to the internet. (For example, `enp0s25`, `wls3`, and so on).
+{: .notice--danger}
+
+### Turn on your eNodeB and Phone
+---
+
+- You can see actual traffic through wireshark -- [[srsenb.pcapng]]({{ site.url }}{{ site.baseurl }}/assets/pcapng/srsenb.pcapng).
+- You can view the log at `$INSTALL_PREFIX/var/log/nextepc/*.log`.
+
+### Troubleshooting
+---
+
+Debugging tools can help you troubleshoot problems.
+
+- [GDB](https://www.gnu.org/software/gdb/) can be used as below:
+
+  ```bash
+  ➜  nextepc git:(master) ✗ sudo apt install gdb
+  ➜  nextepc git:(master) ✗ ./libtool --mode=execute gdb ./nextepc-epcd
+  ```
+
+- On *Mac OS X*, you can use the [LLDB](https://lldb.llvm.org/).
+
+  ```bash
+  ➜  nextepc git:(master) ✗ ./libtool --mode=execute sudo lldb ./nextepc-epcd
+  ```
+
+You can use the command line option[`-d`] to record more logs.
+
+```bash
+➜  nextepc git:(master) ✗ ./nextepc-epcd -d
+04/07 16:46:23.982: [core] INFO: NextEPC daemon start (main.c:169)
+
+PID[5185]: '/Users/acetcom/Documents/git/open5gs/nextepc/install/var/run/nextepc-epcd/pid'
+File Logging: '/Users/acetcom/Documents/git/open5gs/nextepc/install/var/log/nextepc/nextepc.log'
+MongoDB URI: 'mongodb://localhost/nextepc'
+Configuration: '/Users/acetcom/Documents/git/open5gs/nextepc/install/etc/nextepc/nextepc.conf'
+04/07 16:46:23.996: [core] INFO: PCRF try to initialize (epc.c:37)
+04/07 16:46:24.033: [core] INFO: PCRF initialize...done (epc.c:40)
+04/07 16:46:24.035: [core] INFO: PGW try to initialize (epc.c:84)
+04/07 16:46:24.132: [thread] DEBUG: [0x10d4df908] thread started (ogs-thread.c:101)
+04/07 16:46:24.132: [thread] DEBUG: [0x10d4df908] worker signal (ogs-thread.c:66)
+04/07 16:46:24.132: [fd] INFO: CONNECTED TO 'pgw.localdomain' (TCP,soc#11): (fd_logger.c:113)
+04/07 16:46:24.133: [core] INFO: PGW initialize...done (epc.c:87)
+04/07 16:46:24.133: [pgw] DEBUG: pgw_state_initial(): INIT (pgw_sm.c:15)
+04/07 16:46:24.133: [fd] INFO: CONNECTED TO 'pcrf.localdomain' (TCP,soc#11): (fd_logger.c:113)
+04/07 16:46:24.134: [pgw] DEBUG: pgw_state_operational(): ENTRY (pgw_sm.c:33)
+04/07 16:46:24.135: [core] INFO: SGW try to initialize (epc.c:133)
+04/07 16:46:24.136: [sock] DEBUG: socket create(2:2:17) (ogs-socket.c:82)
+04/07 16:46:24.136: [sock] DEBUG: udp socket(2) (ogs-udp.c:32)
+04/07 16:46:24.137: [sock] DEBUG: socket bind 127.0.0.3:2123 (ogs-socket.c:107)
+04/07 16:46:24.138: [sock] DEBUG: udp_server() [127.0.0.3]:2123 (ogs-udp.c:55)
+04/07 16:46:24.139: [gtp] INFO: gtp_server() [127.0.0.3]:2123 (gtp_path.c:35)
+04/07 16:46:24.140: [sock] DEBUG: socket create(2:2:17) (ogs-socket.c:82)
+04/07 16:46:24.140: [sock] DEBUG: udp socket(2) (ogs-udp.c:32)
+04/07 16:46:24.141: [sock] DEBUG: socket bind 127.0.0.3:2152 (ogs-socket.c:107)
+04/07 16:46:24.142: [sock] DEBUG: udp_server() [127.0.0.3]:2152 (ogs-udp.c:55)
+04/07 16:46:24.143: [gtp] INFO: gtp_server() [127.0.0.3]:2152 (gtp_path.c:35)
+04/07 16:46:24.158: [thread] DEBUG: [0x10d4df408] worker signal (ogs-thread.c:66)
+04/07 16:46:24.158: [thread] DEBUG: [0x10d4df408] thread started (ogs-thread.c:101)
+04/07 16:46:24.159: [sgw] DEBUG: sgw_state_initial(): INIT
+ (sgw_sm.c:12)
+04/07 16:46:24.159: [core] INFO: SGW initialize...done (epc.c:136)
+04/07 16:46:24.160: [sgw] DEBUG: sgw_state_operational(): ENTRY
+ (sgw_sm.c:30)
+04/07 16:46:24.161: [sock] DEBUG: socket create(2:2:17) (ogs-socket.c:82)
+04/07 16:46:24.162: [sock] DEBUG: udp socket(2) (ogs-udp.c:32)
+04/07 16:46:24.162: [sock] DEBUG: socket bind 127.0.0.2:2123 (ogs-socket.c:107)
+04/07 16:46:24.162: [core] INFO: HSS try to initialize (epc.c:184)
+04/07 16:46:24.163: [sock] DEBUG: udp_server() [127.0.0.2]:2123 (ogs-udp.c:55)
+04/07 16:46:24.164: [gtp] INFO: gtp_server() [127.0.0.2]:2123 (gtp_path.c:35)
+04/07 16:46:24.164: [sock] DEBUG: socket create(2:2:17) (ogs-socket.c:82)
+04/07 16:46:24.165: [sock] DEBUG: udp socket(2) (ogs-udp.c:32)
+04/07 16:46:24.166: [sock] DEBUG: socket bind 192.168.0.3:2152 (ogs-socket.c:107)
+04/07 16:46:24.166: [sock] DEBUG: udp_server() [192.168.0.3]:2152 (ogs-udp.c:55)
+04/07 16:46:24.167: [gtp] INFO: gtp_server() [192.168.0.3]:2152 (gtp_path.c:35)
+04/07 16:46:24.254: [core] INFO: HSS initialize...done (epc.c:187)
+04/07 16:46:24.255: [core] INFO: MME try to initialize (epc.c:217)
+04/07 16:46:24.366: [fd] INFO: CONNECTED TO 'mme.localdomain' (TCP,soc#9): (fd_logger.c:113)
+04/07 16:46:24.367: [fd] INFO: CONNECTED TO 'hss.localdomain' (TCP,soc#17): (fd_logger.c:113)
+04/07 16:46:24.367: [thread] DEBUG: [0x10d4dfe08] thread started (ogs-thread.c:101)
+04/07 16:46:24.367: [core] INFO: MME initialize...done (epc.c:220)
+04/07 16:46:24.367: [thread] DEBUG: [0x10d4dfe08] worker signal (ogs-thread.c:66)
+
+
+NextEPC daemon v0.4.0.67-078c - Apr  6 2019 17:20:24
+
+04/07 16:46:24.368: [mme] DEBUG: mme_state_initial(): INIT
+ (mme_sm.c:23)
+04/07 16:46:24.368: [mme] DEBUG: mme_state_operational(): ENTRY
+ (mme_sm.c:43)
+04/07 16:46:24.368: [sock] DEBUG: socket create(2:2:17) (ogs-socket.c:82)
+04/07 16:46:24.368: [sock] DEBUG: udp socket(2) (ogs-udp.c:32)
+04/07 16:46:24.368: [sock] DEBUG: socket bind 192.168.0.3:2123 (ogs-socket.c:107)
+04/07 16:46:24.368: [sock] DEBUG: udp_server() [192.168.0.3]:2123 (ogs-udp.c:55)
+04/07 16:46:24.368: [gtp] INFO: gtp_server() [192.168.0.3]:2123 (gtp_path.c:35)
+04/07 16:46:24.368: [sock] DEBUG: socket create(2:2:17) (ogs-socket.c:82)
+04/07 16:46:24.368: [sock] DEBUG: udp socket(2) (ogs-udp.c:32)
+04/07 16:46:24.368: [sock] DEBUG: socket connect 127.0.0.2:2123
+ (ogs-socket.c:132)
+04/07 16:46:24.368: [sock] DEBUG: udp_client() [127.0.0.2]:2123 (ogs-udp.c:89)
+04/07 16:46:24.368: [gtp] INFO: gtp_client() [127.0.0.2]:2123 (gtp_path.c:49)
+04/07 16:46:24.368: [mme] DEBUG: Old INITMSG (numout:10 maxin:2048 maxattempt:8 maxinit_to:60000) (s1ap_usrsctp.c:283)
+04/07 16:46:24.368: [mme] DEBUG: New INITMSG (numout:30 maxin:65535 maxattempt:4 maxinit_to:8000) (s1ap_usrsctp.c:311)
+04/07 16:46:24.368: [mme] INFO: s1ap_server() [192.168.0.3]:36412 (s1ap_usrsctp.c:69)
+04/07 16:46:24.609: [pgw] DEBUG: [PGW] PROTO:17 SRC:2d2d0001 2d2d0001 d683d683 010f2296 (pgw_ipfw.c:277)
+04/07 16:46:24.610: [pgw] DEBUG: [PGW] HLEN:20  DST:2d2d0001 d683d683 010f2296 0053756b (pgw_ipfw.c:280)
+04/07 16:46:25.611: [pgw] DEBUG: [PGW] PROTO:17 SRC:2d2d0001 2d2d0001 d683d683 010f3a6d (pgw_ipfw.c:277)
+04/07 16:46:25.612: [pgw] DEBUG: [PGW] HLEN:20  DST:2d2d0001 d683d683 010f3a6d 0053756b (pgw_ipfw.c:280)
+
+04/07 16:46:26.607: [pgw] DEBUG: [PGW] PROTO:17 SRC:2d2d0001 2d2d0001 d683d683 010fa451 (pgw_ipfw.c:277)
+04/07 16:46:26.608: [pgw] DEBUG: [PGW] HLEN:20  DST:2d2d0001 d683d683 010fa451 0053756b (pgw_ipfw.c:280)
+...
+...
+...
+^C04/07 16:46:27.013: [core] INFO: SIGINT received (main.c:60)
+04/07 16:46:27.013: [core] INFO: NextEPC daemon terminating... (main.c:185)
+04/07 16:46:27.013: [core] INFO: DB-Client try to terminate (application.c:116)
+04/07 16:46:27.019: [core] INFO: DB-Client terminate...done (application.c:118)
+04/07 16:46:27.019: [core] INFO: MME try to terminate (epc.c:229)
+04/07 16:46:27.019: [event] DEBUG: interrupt all (ogs-queue.c:260)
+04/07 16:46:27.019: [thread] DEBUG: [0x10d4dfe08] thread running(1) (ogs-thread.c:111)
+04/07 16:46:27.019: [mme] DEBUG: mme_state_operational(): EXIT
+ (mme_sm.c:43)
+04/07 16:46:27.020: [mme] DEBUG: mme_state_final(): INIT
+ (mme_sm.c:32)
+04/07 16:46:27.020: [thread] DEBUG: [0x10d4dfe08] worker done (ogs-thread.c:72)
+04/07 16:46:27.021: [thread] DEBUG: [0x10d4dfe08] thread destroy (ogs-thread.c:123)
+04/07 16:46:27.021: [thread] DEBUG: [0x10d4dfe08] thread join (ogs-thread.c:132)
+04/07 16:46:27.021: [thread] DEBUG: [0x10d4dfe08] thread done (ogs-thread.c:138)
+04/07 16:46:27.022: [fd] INFO: freeDiameter[6]: Initiating freeDiameter shutdown sequence (3) (fd_init.c:131)
+04/07 16:46:27.148: [core] INFO: MME terminate...done (epc.c:231)
+04/07 16:46:27.148: [core] INFO: HSS try to terminate (epc.c:194)
+04/07 16:46:27.149: [fd] INFO: freeDiameter[6]: Initiating freeDiameter shutdown sequence (3) (fd_init.c:131)
+04/07 16:46:27.257: [core] INFO: HSS terminate...done (epc.c:196)
+04/07 16:46:27.257: [core] INFO: SGW try to terminate (epc.c:143)
+04/07 16:46:27.258: [event] DEBUG: interrupt all (ogs-queue.c:260)
+04/07 16:46:27.258: [thread] DEBUG: [0x10d4df408] thread running(1) (ogs-thread.c:111)
+04/07 16:46:27.258: [sgw] DEBUG: sgw_state_operational(): EXIT
+ (sgw_sm.c:30)
+04/07 16:46:27.259: [sgw] DEBUG: sgw_state_final(): INIT
+ (sgw_sm.c:21)
+04/07 16:46:27.260: [thread] DEBUG: [0x10d4df408] worker done (ogs-thread.c:72)
+04/07 16:46:27.260: [thread] DEBUG: [0x10d4df408] thread destroy (ogs-thread.c:123)
+04/07 16:46:27.261: [thread] DEBUG: [0x10d4df408] thread join (ogs-thread.c:132)
+04/07 16:46:27.261: [thread] DEBUG: [0x10d4df408] thread done (ogs-thread.c:138)
+04/07 16:46:27.263: [core] INFO: SGW terminate...done (epc.c:145)
+04/07 16:46:27.263: [core] INFO: PGW try to terminate (epc.c:94)
+04/07 16:46:27.264: [event] DEBUG: interrupt all (ogs-queue.c:260)
+04/07 16:46:27.265: [thread] DEBUG: [0x10d4df908] thread running(1) (ogs-thread.c:111)
+04/07 16:46:27.265: [pgw] DEBUG: pgw_state_operational(): EXIT (pgw_sm.c:33)
+04/07 16:46:27.266: [pgw] DEBUG: pgw_state_final(): INIT (pgw_sm.c:24)
+04/07 16:46:27.267: [thread] DEBUG: [0x10d4df908] worker done (ogs-thread.c:72)
+04/07 16:46:27.268: [thread] DEBUG: [0x10d4df908] thread destroy (ogs-thread.c:123)
+04/07 16:46:27.269: [thread] DEBUG: [0x10d4df908] thread join (ogs-thread.c:132)
+04/07 16:46:27.270: [thread] DEBUG: [0x10d4df908] thread done (ogs-thread.c:138)
+04/07 16:46:27.271: [fd] INFO: freeDiameter[6]: Initiating freeDiameter shutdown sequence (3) (fd_init.c:131)
+04/07 16:46:27.401: [core] INFO: PGW terminate...done (epc.c:96)
+04/07 16:46:27.402: [core] INFO: PCRF try to terminate (epc.c:47)
+04/07 16:46:27.403: [fd] INFO: freeDiameter[6]: Initiating freeDiameter shutdown sequence (3) (fd_init.c:131)
+04/07 16:46:27.514: [core] INFO: PCRF terminate...done (epc.c:49)
+```

docs/_docs/platform/01-debian-ubuntu.md

@@ -0,0 +1,108 @@
+---
+title: Build on Ubuntu/Debian
+---
+
+### TUN device permissions 
+---
+
+To run nextepc with least privilege, the TUN device privilege should be a `crw-rw-rw-`(666). Otherwise, you need to run nextepc daemon as root. If the permission is not `crw-rw-rw-`(666), you may need to install [udev](https://mirrors.edge.kernel.org/pub/linux/utils/kernel/hotplug/udev/udev.html) package.
+
+```bash
+$ ls -al /dev/net/tun
+crw-rw---- 1 root 28 10, 200 Feb 11 05:13 /dev/net/tun
+
+$ sudo apt install udev
+$ sudo systemctl start systemd-udevd (if '/lib/systemd/systemd-udevd' is not running)
+
+$ ls -al /dev/net/tun
+crw-rw-rw- 1 root 28 10, 200 Feb 11 05:13 /dev/net/tun
+```
+
+Nevertheless, if the permission do not change, you can run nextepc with root privileges or change the permission using [chmod](https://www.gnu.org/software/coreutils/manual/html_node/chmod-invocation.html) as follows:
+
+```bash
+$ sudo chmod 666 /dev/net/tun
+```
+
+### Making TUN Permanent
+---
+
+Write a configuration file for the TUN deivce.
+```bash
+$ sudo sh -c "cat << EOF > /etc/systemd/network/99-nextepc.netdev
+[NetDev]
+Name=pgwtun
+Kind=tun
+EOF"
+```
+
+Create a TUN device. The interface name will be `pgwtun`.
+```bash
+$ sudo systemctl enable systemd-networkd
+$ sudo systemctl restart systemd-networkd
+
+$ sudo apt install net-tools
+$ ifconfig pgwtun
+pgwtun: flags=4241<UP,POINTOPOINT,NOARP,MULTICAST>  mtu 1500
+        inet6 fe80::e86e:86d8:ea24:f8ee  prefixlen 64  scopeid 0x20<link>
+        unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00  txqueuelen 500  (UNSPEC)
+        RX packets 0  bytes 0 (0.0 B)
+        RX errors 0  dropped 0  overruns 0  frame 0
+        TX packets 2  bytes 255 (255.0 B)
+        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
+```
+
+Then, to support IPv6-enabled UEs, you must configure your TUN device to support IPv6.
+
+```bash
+$ sysctl -n net.ipv6.conf.pgwtun.disable_ipv6
+1
+
+$ sudo sh -c "echo 'net.ipv6.conf.pgwtun.disable_ipv6=0' > /etc/sysctl.d/30-nextepc.conf"
+$ sudo sysctl -p /etc/sysctl.d/30-nextepc.conf
+
+$ sysctl -n net.ipv6.conf.pgwtun.disable_ipv6
+0
+```
+
+**Note:** If your TUN device already supports IPv6, you can skip this steps above.
+{: .notice--warning}
+
+
+You are now ready to set the IP address on TUN device. 
+
+```bash
+$ sudo sh -c "cat << EOF > /etc/systemd/network/99-nextepc.network
+[Match]
+Name=pgwtun
+[Network]
+Address=45.45.0.1/16
+Address=cafe::1/64
+EOF"
+```
+
+Restart the TUN device
+
+```bash
+$ sudo systemctl restart systemd-networkd
+```
+
+Make sure it is set up properly.
+
+
+```bash
+$ ifconfig pgwtun
+pgwtun: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST>  mtu 1500
+        inet 45.45.0.1  netmask 255.255.0.0  destination 45.45.0.1
+        inet6 cafe::1  prefixlen 64  scopeid 0x0<global>
+        inet6 fe80::e86e:86d8:ea24:f8ee  prefixlen 64  scopeid 0x20<link>
+        unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00  txqueuelen 500  (UNSPEC)
+        RX packets 0  bytes 0 (0.0 B)
+        RX errors 0  dropped 0  overruns 0  frame 0
+        TX packets 20  bytes 2019 (2.0 KB)
+        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
+```
+
+**Note:** On *Linux*, you should run `nextepc-pgwd` first to correctly verify the IP address of TUN device. Otherwise, the TUN device's IP address is not displayed by the [ifconfig](http://net-tools.sourceforge.net/man/ifconfig.8.html) command.
+{: .notice--warning}
+

docs/_docs/platform/02-centos.md

@@ -0,0 +1,145 @@
+---
+title: CentOS
+head_inline: "<style> .blue { color: blue; } </style>"
+---
+
+This guide is based on **CentOS 7** Distribution.
+{: .blue}
+
+### Getting MongoDB
+---
+
+Create the MongoDB repository file.
+```bash
+$ sudo sh -c 'cat << EOF > /etc/yum.repos.d/mongodb-org-3.4.repo
+[mongodb-org-3.4]
+name=MongoDB Repository
+baseurl=https://repo.mongodb.org/yum/redhat/\$releasever/mongodb-org/3.4/x86_64/
+gpgcheck=1
+enabled=1
+gpgkey=https://www.mongodb.org/static/pgp/server-3.4.asc
+EOF'
+```
+
+Install MongoDB with Package Manager.
+```bash
+sudo yum -y install mongodb-org
+sudo systemctl start mongod (if '/usr/bin/mongod' is not running)
+```
+
+### Setting up TUN device (No persistent after rebooting)
+---
+
+Create the TUN device. Interface name will be `pgwtun`.
+```bash
+$ sudo yum -y install iproute
+$ sudo ip tuntap add name pgwtun mode tun
+$ ip link show
+```
+
+Then, to support IPv6-enabled UEs, you must configure your TUN device to support IPv6.
+
+```bash
+$ sysctl -n net.ipv6.conf.pgwtun.disable_ipv6
+1
+
+$ sudo -w net.ipv6.conf.pgwtun.disable_ipv6=0
+
+$ sysctl -n net.ipv6.conf.pgwtun.disable_ipv6
+0
+```
+
+**Note:** If your TUN device already supports IPv6, you can skip this steps above.
+{: .notice--warning}
+
+You are now ready to set the IP address on TUN device. 
+
+```bash
+$ sudo ip addr add 45.45.0.1/16 dev pgwtun
+$ sudo ip addr add cafe::1/64 dev pgwtun
+```
+
+Make sure it is set up properly.
+```bash
+$ sudo ip link set pgwtun up
+$ ip link show
+```
+
+**Tip:** The script provided in [$GIT_REPO/support/network/restart.sh](https://github.com/{{ site.github_username }}/nextepc/blob/master/support/network/restart.sh) makes it easy to configure the TUN device as follows:  
+`$ sudo ./support/network/restart.sh`
+{: .notice--info}
+
+### Building NextEPC
+---
+
+Install the depedencies for building the source code.
+```bash
+$ sudo yum -y install git flex bison autoconf libtool lksctp-tools-devel libidn-devel gnutls-devel libgcrypt-devel openssl-devel cyrus-sasl-devel libyaml-devel
+```
+
+Configure EPEL package and install mongo-c-driver. 
+```bash
+$ sudo yum -y install epel-release
+$ sudo yum -y install mongo-c-driver-devel
+```
+
+Git clone with `--recursive` option.
+
+```bash
+➜  open5gs git clone --recursive https://github.com/{{ site.github_username }}/nextepc
+```
+
+To compile with autotools:
+
+```bash
+➜  open5gs cd nextepc
+➜  nextepc git:(master) ✗ autoreconf -iv
+➜  nextepc git:(master) ✗ ./configure --prefix=`pwd`/install
+➜  nextepc git:(master) ✗ make -j `nproc`
+```
+
+Check whether the compilation is correct.
+```bash
+➜  nextepc git:(master) ✗ make check
+```
+
+You need to perform the **installation process**.
+```bash
+➜  nextepc git:(master) ✗ make install
+```
+
+Check whether the installation is correct.
+```bash
+➜  nextepc git:(master) ✗ ./test/testcomplex
+s1setup_test        : SUCCESS
+attach_test         : SUCCESS
+volte_test          : SUCCESS
+handover_test       : SUCCESS
+All tests passed.
+```
+
+**Tip:** You can also check the result of `./test/testcomplex` with a tool that captures packets. If you are running `wireshark`, select the `loopback` interface and set FILTER to `s1ap || gtpv2 || diameter || gtp`.  You can see the virtually created packets. [[testcomplex.pcapng]]({{ site.url }}{{ site.baseurl }}/assets/pcapng/testcomplex.pcapng)
+{: .notice--info}
+
+### Building WebUI of NextEPC
+---
+
+[Node.js](https://nodejs.org/) is required to build WebUI of NextEPC
+
+```bash
+$ curl --silent --location https://rpm.nodesource.com/setup_8.x | sudo bash -
+$ sudo yum -y install nodejs
+```
+
+Install the dependencies to run WebUI
+
+```bash
+➜  nextepc git:(master) ✗ cd webui
+➜  webui git:(master) ✗ npm install
+```
+
+The WebUI runs as an [npm](https://www.npmjs.com/) script.
+
+```bash
+➜  webui git:(master) ✗ npm run dev
+```

docs/_docs/platform/03-fedora.md

@@ -0,0 +1,131 @@
+---
+title: Fedora
+head_inline: "<style> .blue { color: blue; } </style>"
+---
+
+This guide is based on **Fedora 27** Distribution.
+{: .blue}
+
+### Getting MongoDB
+---
+
+Install MongoDB with package manager.
+```bash
+$ sudo dnf -y install mongodb-server
+```
+
+Run MongoDB server.
+```bash
+$ mkdir -p ./data/db
+$ mongod --dbpath ./data/db
+```
+
+### Setting up TUN device (No persistent after rebooting)
+---
+
+Create the TUN device. Interface name will be `pgwtun`.
+```bash
+$ sudo dnf -y install iproute
+$ sudo ip tuntap add name pgwtun mode tun
+$ ip link show
+```
+
+Then, to support IPv6-enabled UEs, you must configure your TUN device to support IPv6.
+
+```bash
+$ sysctl -n net.ipv6.conf.pgwtun.disable_ipv6
+1
+
+$ sudo -w net.ipv6.conf.pgwtun.disable_ipv6=0
+
+$ sysctl -n net.ipv6.conf.pgwtun.disable_ipv6
+0
+```
+
+**Note:** If your TUN device already supports IPv6, you can skip this steps above.
+{: .notice--warning}
+
+You are now ready to set the IP address on TUN device. 
+
+```bash
+$ sudo ip addr add 45.45.0.1/16 dev pgwtun
+$ sudo ip addr add cafe::1/64 dev pgwtun
+```
+
+Make sure it is set up properly.
+```bash
+$ sudo ip link set pgwtun up
+$ ip link show
+```
+
+**Tip:** The script provided in [$GIT_REPO/support/network/restart.sh](https://github.com/{{ site.github_username }}/nextepc/blob/master/support/network/restart.sh) makes it easy to configure the TUN device as follows:  
+`$ sudo ./support/network/restart.sh`
+{: .notice--info}
+
+### Building NextEPC
+---
+
+Install the depedencies for building the source code.
+```bash
+$ sudo dnf -y install git gcc flex bison autoconf libtool mongo-c-driver-devel lksctp-tools-devel libidn-devel gnutls-devel libgcrypt-devel openssl-devel cyrus-sasl-devel snappy-devel libyaml-devel
+```
+
+Git clone with `--recursive` option.
+
+```bash
+➜  open5gs git clone --recursive https://github.com/{{ site.github_username }}/nextepc
+```
+
+To compile with autotools:
+
+```bash
+➜  open5gs cd nextepc
+➜  nextepc git:(master) ✗ autoreconf -iv
+➜  nextepc git:(master) ✗ ./configure --prefix=`pwd`/install
+➜  nextepc git:(master) ✗ make -j `nproc`
+```
+
+Check whether the compilation is correct.
+```bash
+➜  nextepc git:(master) ✗ make check
+```
+
+You need to perform **the installation process**.
+```bash
+➜  nextepc git:(master) ✗ make install
+```
+
+Check whether the installation is correct.
+```bash
+➜  nextepc git:(master) ✗ ./test/testcomplex
+s1setup_test        : SUCCESS
+attach_test         : SUCCESS
+volte_test          : SUCCESS
+handover_test       : SUCCESS
+All tests passed.
+```
+
+**Tip:** You can also check the result of `./test/testcomplex` with a tool that captures packets. If you are running `wireshark`, select the `loopback` interface and set FILTER to `s1ap || gtpv2 || diameter || gtp`.  You can see the virtually created packets. [[testcomplex.pcapng]]({{ site.url }}{{ site.baseurl }}/assets/pcapng/testcomplex.pcapng)
+{: .notice--info}
+
+### Building WebUI of NextEPC
+---
+
+[Node.js](https://nodejs.org/) is required to build WebUI of NextEPC
+
+```bash
+$ sudo dnf -y install nodejs
+```
+
+Install the dependencies to run WebUI
+
+```bash
+➜  nextepc git:(master) ✗ cd webui
+➜  webui git:(master) ✗ npm install
+```
+
+The WebUI runs as an [npm](https://www.npmjs.com/) script.
+
+```bash
+➜  webui git:(master) ✗ npm run dev
+```

docs/_docs/platform/04-freebsd.md

@@ -0,0 +1,134 @@
+---
+title: FreeBSD
+head_inline: "<style> .blue { color: blue; } </style>"
+---
+
+This guide is based on **FreeBSD Relase 11.1**.
+{: .blue}
+
+### Getting MongoDB
+---
+
+Install MongoDB with package manager.
+```bash
+$ sudo pkg install mongodb
+```
+
+Run MongoDB server.
+```bash
+$ mkdir -p ./data/db
+$ mongod --dbpath ./data/db
+```
+
+### Setting up TUN device (No persistent after rebooting)
+---
+
+Configure the TUN device.
+```bash
+$ sudo ifconfig lo0 alias 127.0.0.2 netmask 255.255.255.255
+$ sudo ifconfig lo0 alias 127.0.0.3 netmask 255.255.255.255
+$ sudo ifconfig lo0 alias 127.0.0.4 netmask 255.255.255.255
+$ sudo ifconfig lo0 alias 127.0.0.5 netmask 255.255.255.255
+```
+
+Enable IP forwarding
+```bash
+$ sudo sysctl -w net.inet.ip.forwarding=1
+```
+
+**Tip:** The script provided in [$GIT_REPO/support/network/restart.sh](https://github.com/{{ site.github_username }}/nextepc/blob/master/support/network/restart.sh) makes it easy to configure the TUN device as follows:  
+`$ sudo ./support/network/restart.sh`
+{: .notice--info}
+
+### Building NextEPC
+---
+
+Install the depedencies for building the source code.
+```bash
+$ sudo pkg install git gcc bison gsed pkgconf autoconf automake libtool mongo-c-driver gnutls libgcrypt libidn libyaml
+```
+
+Git clone with `--recursive` option.
+
+```bash
+➜  open5gs git clone --recursive https://github.com/{{ site.github_username }}/nextepc
+```
+
+To compile with autotools:
+
+```bash
+➜  open5gs cd nextepc
+➜  nextepc git:(master) ✗ autoreconf -iv
+➜  nextepc git:(master) ✗ ./configure --prefix=`pwd`/install
+➜  nextepc git:(master) ✗ make -j `nproc`
+```
+
+Check whether the compilation is correct.
+
+**Note:** This should require *sudo* due to access `/dev/tun0`.
+{: .notice--danger}
+```bash
+➜  nextepc git:(master) ✗ sudo make check
+```
+
+You need to perform **the installation process**.
+```bash
+➜  nextepc git:(master) ✗ make install
+```
+
+Check whether the installation is correct.
+
+**Note:** This should require *sudo* due to access `/dev/tun0`.
+{: .notice--danger}
+
+```bash
+acetcom@nextepc:~/nextepc$ sudo ./test/testcomplex
+s1setup_test        : SUCCESS
+attach_test         : SUCCESS
+volte_test          : SUCCESS
+handover_test       : SUCCESS
+All tests passed.
+```
+
+**Tip:** You can also check the result of `./test/testcomplex` with a tool that captures packets. If you are running `wireshark`, select the `loopback` interface and set FILTER to `s1ap || gtpv2 || diameter || gtp`.  You can see the virtually created packets. [[testcomplex.pcapng]]({{ site.url }}{{ site.baseurl }}/assets/pcapng/testcomplex.pcapng)
+{: .notice--info}
+
+For developers, it provides `nextepc-epcd` daemon that includes both *MME*, *SGW*, *PGW*, *HSS*, and *PCRF*.
+
+**Note:** This should require *sudo* due to access `/dev/tun0`.
+{: .notice--danger}
+
+```bash
+acetcom@nextepc:~/nextepc$ sudo ./nextepc-epcd
+04/06 23:13:03.367: [core] INFO: NextEPC daemon start (main.c:169)
+
+PID[6404]: '/home/acetcom/Documents/git/open5gs/nextepc/install/var/run/nextepc-epcd/pid'
+File Logging: '/home/acetcom/Documents/git/open5gs/nextepc/install/var/log/nextepc/nextepc.log'
+MongoDB URI: 'mongodb://localhost/nextepc'
+Configuration: '/home/acetcom/Documents/git/open5gs/nextepc/install/etc/nextepc/nextepc.conf'
+04/06 23:13:03.369: [core] INFO: PCRF try to initialize (epc.c:37)
+...
+```
+
+### Building WebUI of NextEPC
+---
+
+[Node.js](https://nodejs.org/) is required to build WebUI of NextEPC
+
+```bash
+$ sudo pkg install node
+```
+
+Install the dependencies to run WebUI
+
+```bash
+➜  nextepc git:(master) ✗ cd webui
+➜  webui git:(master) ✗ npm install
+```
+
+The WebUI runs as an [npm](https://www.npmjs.com/) script.
+
+```bash
+➜  webui git:(master) ✗ npm run dev
+```
+

docs/_docs/platform/05-macosx.md

@@ -0,0 +1,141 @@
+---
+title: Mac OS X
+head_inline: "<style> .blue { color: blue; } </style>"
+---
+
+This guide is based on **macOS High Sierra 10.13.3**.
+{: .blue}
+
+### Installing Homebrew
+---
+
+```bash
+$ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
+```
+
+### Getting MongoDB
+---
+
+Install MongoDB with Package Manager.
+```bash
+$ brew install mongodb
+```
+
+Run MongoDB server.
+```bash
+$ mkdir -p ./data/db
+$ mongod --dbpath ./data/db
+```
+
+### Setting up TUN device (No persistent after rebooting)
+---
+
+Install TUN/TAP driver
+- You can download it from [http://tuntaposx.sourceforge.net/](http://tuntaposx.sourceforge.net/)
+
+Configure the TUN device.
+```bash
+$ sudo ifconfig lo0 alias 127.0.0.2 netmask 255.255.255.255
+$ sudo ifconfig lo0 alias 127.0.0.3 netmask 255.255.255.255
+$ sudo ifconfig lo0 alias 127.0.0.4 netmask 255.255.255.255
+$ sudo ifconfig lo0 alias 127.0.0.5 netmask 255.255.255.255
+```
+
+Enable IP forwarding & Masquerading
+```bash
+$ sudo sysctl -w net.inet.ip.forwarding=1
+$ sudo sh -c "echo 'nat on {en0} from 45.45.0.0/16 to any -> {en0}' > /etc/pf.anchors/org.nextepc"
+$ sudo pfctl -e -f /etc/pf.anchors/org.nextepc
+```
+
+**Tip:** The script provided in [$GIT_REPO/support/network/restart.sh](https://github.com/{{ site.github_username }}/nextepc/blob/master/support/network/restart.sh) makes it easy to configure the TUN device as follows:  
+`$ sudo ./support/network/restart.sh`
+{: .notice--info}
+
+### Building NextEPC
+---
+
+Install the depedencies for building the source code.
+```bash
+$ brew install autoconf automake libtool gnu-sed mongo-c-driver libusrsctp gnutls libgcrypt libidn libyaml pkg-config
+```
+
+Git clone with `--recursive` option.
+
+```bash
+➜  open5gs git clone --recursive https://github.com/{{ site.github_username }}/nextepc
+```
+
+To compile with autotools:
+
+```bash
+➜  open5gs cd nextepc
+➜  nextepc git:(master) ✗ autoreconf -iv
+➜  nextepc git:(master) ✗ ./configure --prefix=`pwd`/install
+➜  nextepc git:(master) ✗ make -j `nproc`
+```
+
+**Note:** On MAC OS X, the compilation check is not supported at this point.
+{: .notice--danger}
+
+You need to perform **the installation process**.
+```bash
+➜  nextepc git:(master) ✗ make install
+```
+
+Check whether the installation is correct.
+
+**Note:** This should require *sudo* due to access `/dev/tun0`.
+{: .notice--danger}
+
+```bash
+acetcom@nextepc:~/nextepc$ sudo ./test/testcomplex
+s1setup_test        : SUCCESS
+attach_test         : SUCCESS
+volte_test          : SUCCESS
+handover_test       : SUCCESS
+All tests passed.
+```
+
+**Tip:** You can also check the result of `./test/testcomplex` with a tool that captures packets. If you are running `wireshark`, select the `loopback` interface and set FILTER to `s1ap || gtpv2 || diameter || gtp`.  You can see the virtually created packets. [[testcomplex.pcapng]]({{ site.url }}{{ site.baseurl }}/assets/pcapng/testcomplex.pcapng)
+{: .notice--info}
+
+For developers, it provides `nextepc-epcd` daemon that includes both *MME*, *SGW*, *PGW*, *HSS*, and *PCRF*.
+
+**Note:** This should require *sudo* due to access `/dev/tun0`.
+{: .notice--danger}
+
+```bash
+acetcom@nextepc:~/nextepc$ sudo ./nextepc-epcd
+04/06 23:13:03.367: [core] INFO: NextEPC daemon start (main.c:169)
+
+PID[6404]: '/home/acetcom/Documents/git/open5gs/nextepc/install/var/run/nextepc-epcd/pid'
+File Logging: '/home/acetcom/Documents/git/open5gs/nextepc/install/var/log/nextepc/nextepc.log'
+MongoDB URI: 'mongodb://localhost/nextepc'
+Configuration: '/home/acetcom/Documents/git/open5gs/nextepc/install/etc/nextepc/nextepc.conf'
+04/06 23:13:03.369: [core] INFO: PCRF try to initialize (epc.c:37)
+...
+```
+
+### Building WebUI of NextEPC
+---
+
+[Node.js](https://nodejs.org/) is required to build WebUI of NextEPC
+
+```bash
+$ brew install node
+```
+
+Install the dependencies to run WebUI
+
+```bash
+➜  nextepc git:(master) ✗ cd webui
+➜  webui git:(master) ✗ npm install
+```
+
+The WebUI runs as an [npm](https://www.npmjs.com/) script.
+
+```bash
+➜  webui git:(master) ✗ npm run dev
+```
+

docs/_docs/platform/06-ubuntu-trusty.md

@@ -0,0 +1,157 @@
+---
+title: Ubuntu (Trusty)
+head_inline: "<style> .blue { color: blue; } </style>"
+---
+
+This guide is based on **Ubuntu 14.04(Trusty)** Distribution.
+{: .blue}
+
+## Getting MongoDB
+
+Install MongoDB with package manager.
+```bash
+$ sudo apt update
+$ sudo apt install mongodb
+$ sudo systemctl start mongodb (if '/usr/bin/mongod' is not running)
+```
+
+### TUN device permissions 
+---
+
+To run nextepc with least privilege, the TUN device privilege should be a `crw-rw-rw-`(666). Otherwise, you need to run nextepc daemon as root. If the permission is not `crw-rw-rw-`(666), you may need to install [udev](https://mirrors.edge.kernel.org/pub/linux/utils/kernel/hotplug/udev/udev.html) package.
+
+```bash
+$ ls -al /dev/net/tun
+crw-rw---- 1 root 28 10, 200 Feb 11 05:13 /dev/net/tun
+
+$ sudo apt install udev
+$ sudo systemctl start systemd-udevd (if '/lib/systemd/systemd-udevd' is not running)
+
+$ ls -al /dev/net/tun
+crw-rw-rw- 1 root 28 10, 200 Feb 11 05:13 /dev/net/tun
+```
+
+Nevertheless, if the permission do not change, you can run nextepc with root privileges or change the permission using [chmod](https://www.gnu.org/software/coreutils/manual/html_node/chmod-invocation.html) as follows:
+
+```bash
+$ sudo chmod 666 /dev/net/tun
+```
+
+### Making TUN Permanent
+---
+
+Write the configuration file for the TUN deivce.
+```bash
+$ sudo sh -c "cat << EOF > /etc/network/interfaces.d/nextepc
+auto pgwtun
+iface pgwtun inet static
+    address 45.45.0.1
+    netmask 255.255.0.0
+    pre-up ip tuntap add name pgwtun mode tun
+    post-down ip tuntap del name pgwtun mode tun
+iface pgwtun inet6 static
+    address cafe::1
+    netmask 64
+EOF"
+```
+
+For loading TUN configuration,
+```bash
+$ sudo sh -c 'if ! grep "source-directory" /etc/network/interfaces | grep "/etc/network/interfaces.d" > /dev/null; then
+    echo "source-directory /etc/network/interfaces.d" >> /etc/network/interfaces
+fi'
+```
+
+Create the TUN device. Interface name will be `pgwtun`.
+```bash
+$ ifup pgwtun
+```
+
+Then, to support IPv6-enabled UEs, you must configure your TUN device to support IPv6.
+
+```bash
+$ sysctl -n net.ipv6.conf.pgwtun.disable_ipv6
+1
+
+$ sudo sh -c "echo 'net.ipv6.conf.pgwtun.disable_ipv6=0' > /etc/sysctl.d/30-nextepc.conf"
+$ sudo sysctl -p /etc/sysctl.d/30-nextepc.conf
+
+$ sysctl -n net.ipv6.conf.pgwtun.disable_ipv6
+0
+```
+
+**Note:** If your TUN device already supports IPv6, you can skip this steps above.
+{: .notice--warning}
+
+
+### Building NextEPC
+---
+
+Install the depedencies for building the source code.
+
+```bash
+sudo apt install git gcc flex bison make autoconf libtool pkg-config libsctp-dev libssl-dev libgnutls-dev libidn11-dev libyaml-dev
+```
+
+Then, compile and install Mongo C Driver like the followings.
+```bash
+sudo apt-get -y install g++ libsasl2-dev
+tar xzf mongo-c-driver-1.8.0.tar.gz
+cd mongo-c-driver-1.8.0
+./configure --disable-automatic-init-and-cleanup
+make
+sudo make install
+sudo ldconfig
+```
+
+Git clone with `--recursive` option.
+
+```bash
+➜  open5gs git clone --recursive https://github.com/{{ site.github_username }}/nextepc
+```
+
+To compile with autotools:
+
+```bash
+➜  open5gs cd nextepc
+➜  nextepc git:(master) ✗ autoreconf -iv
+➜  nextepc git:(master) ✗ ./configure --prefix=`pwd`/install
+➜  nextepc git:(master) ✗ make -j `nproc`
+```
+
+Check whether the compilation is correct.
+```bash
+➜  nextepc git:(master) ✗ make check
+```
+
+You need to perform **the installation process**.
+```bash
+➜  nextepc git:(master) ✗ make install
+```
+
+Check whether the installation is correct.
+```bash
+➜  nextepc git:(master) ✗ ./test/testcomplex
+s1setup_test        : SUCCESS
+attach_test         : SUCCESS
+volte_test          : SUCCESS
+handover_test       : SUCCESS
+All tests passed.
+```
+
+**Tip:** You can also check the result of `./test/testcomplex` with a tool that captures packets. If you are running `wireshark`, select the `loopback` interface and set FILTER to `s1ap || gtpv2 || diameter || gtp`.  You can see the virtually created packets. [[testcomplex.pcapng]]({{ site.url }}{{ site.baseurl }}/assets/pcapng/testcomplex.pcapng)
+{: .notice--info}
+
+For developers, it provides `nextepc-epcd` daemon that includes both *MME*, *SGW*, *PGW*, *HSS*, and *PCRF*.
+
+```bash
+➜  nextepc git:(master) ✗ ./nextepc-epcd
+04/06 23:13:03.367: [core] INFO: NextEPC daemon start (main.c:169)
+
+PID[6404]: '/home/acetcom/Documents/git/open5gs/nextepc/install/var/run/nextepc-epcd/pid'
+File Logging: '/home/acetcom/Documents/git/open5gs/nextepc/install/var/log/nextepc/nextepc.log'
+MongoDB URI: 'mongodb://localhost/nextepc'
+Configuration: '/home/acetcom/Documents/git/open5gs/nextepc/install/etc/nextepc/nextepc.conf'
+04/06 23:13:03.369: [core] INFO: PCRF try to initialize (epc.c:37)
+...
+```

docs/_docs/tutorial/01-your-first-lte.md

@@ -0,0 +1,449 @@
+---
+title: Your First LTE
+head_inline: "<style> .blue { color: blue; } .bold { font-weight: bold; } </style>"
+---
+
+This post is the perfect starting point for learning to build your own LTE network. View this lession as a guided introduction -- including the installation, configuration, and best practices that will ease your learning.
+
+### Prerequisites
+---
+
+First, you have to prepare USRP B200/B210 to run srsENB. However, please keep in mind that you would still need a fairly high-end PC (at least dual-core i5, better quad-core i7) with USB 3.0 to attach the USRP B200/B210. 
+
+For USRP B200/B210, you can use a GPS antenna for clock synchronization. Of course, it can work without a GPS antenna, but if you have that antenna, it's a good to have a window near your desk where you can put the small GPS patch antenna. In my case, a 1 to 2 meters antenna cable is used between desk/computer and the window.
+
+This document will be described with the following equipment.
+ - i5-8500 PC with Ubuntu 18.04(bionic)
+ - USRP B200/B210 with USB 3.0
+ - iPhone XS
+ - sysmoUSIM-SJS1
+ - 10Mhz GPS-DO(Optional)
+
+### Overall Physical Setup
+---
+
+If you want to use GPS antenna, setup your devices in the following order:
+
+  1. GPS antenna near window
+  2. GPS antenna connected to "GPS ANT" connector of GPS-DO (SMA)
+  3. 10MHz output (BNC) of GPS-DO connected to 10MHz input of USRP (SMA)
+  4. GPS input of USRP open/unused!
+  5. 1PPS input of USRP open/unused!
+  6. GPS-DO powered via power supply
+
+**Note:** When the GPS-DO acquires a lock on the GPS signal, a **GREEN** LED is displayed. GPS takes time to function normally. You also need to wait for the **RED** LED(ALARM) to turn off.
+{: .notice--warning}
+
+Then, setup the USRP B200/B210 as below:
+  1. **4x Small Antennas** should be connected to USRP Rx/Tx ports (RF-A/RF-B)
+  2. USRP powered via power supply or over **USB 3.0**
+  3. USRP **USB 3.0** port connected to your PC 
+
+### USIM Setup
+---
+
+Bascially, you can learn how to use it in the [sysmoUSIM manual](https://www.sysmocom.de/manuals/sysmousim-manual.pdf) or on the [official homepage of pysim project](http://osmocom.org/projects/pysim/wiki). Let's take a quickstart guide for this experiment.
+
+###### Install dependencies:
+```
+$ sudo apt-get install pcscd pcsc-tools libccid libpcsclite-dev python-pyscard
+```
+ - Connect SIM card reader to your computer and insert programmable SIM card to the reader. 
+
+###### Check the status of connection by entering the following command:
+```
+$ pcsc_scan
+PC/SC device scanner
+V 1.5.2 (c) 2001-2017, Ludovic Rousseau <ludovic.rousseau@free.fr>
+Using reader plug'n play mechanism
+Scanning present readers...
+0: HID Global OMNIKEY 3x21 Smart Card Reader [OMNIKEY 3x21 Smart Card Reader] 00
+
+Sun May 26 14:26:12 2019
+ Reader 0: HID Global OMNIKEY 3x21 Smart Card Reader [OMNIKEY 3x21 Smart Card Re
+  Card state: Card inserted,
+  ATR: 3B 9F 96 80 1F C7 80 31 A0 73 BE 21 13 67 43 20 07 18 00 00 01 A5
+...
+```
+ - If SIM card reader is recognised then we can expect to print "Card inserted".
+
+###### Get the code of PySIM with installing dependency:
+
+```
+$ sudo apt-get install python-pyscard python-serial python-pip
+$ pip install pytlv
+$ git clone git://git.osmocom.org/pysim
+```
+
+###### Read your SIM card:
+```
+$ ./pySim-read.py -p0 or ./pySim-read.py -p1
+Using PC/SC reader (dev=0) interface
+Reading ...
+ICCID: 8988211000000213010
+IMSI: 310789012345301
+SMSP: ffffffffffffffffffffffffffffffffffffffffffffffffe1ffffffffffffffffffffffff
+...
+```
+
+###### Program your SIM card¶ like the followings:
+```
+./pySim-prog.py -p 0 -n NextEPC -a 62416296 -s 8988211000000213010 -i 310789012345301 -x 310 -y 789 -k 82E9053A1882085FF2C020359938DAE9 -o BFD5771AAF4F6728E9BC6EF2C2533BDB
+Using PC/SC reader (dev=0) interface
+Insert card now (or CTRL-C to cancel)
+Autodetected card type: sysmoUSIM-SJS1
+Generated card parameters :
+ > Name    : NextEPC
+ > SMSP    : e1ffffffffffffffffffffffff0581005155f5ffffffffffff000000
+ > ICCID   : 8988211000000213010
+ > MCC/MNC : 310/789
+ > IMSI    : 310789012345301
+ > Ki      : 82E9053A1882085FF2C020359938DAE9
+ > OPC     : BFD5771AAF4F6728E9BC6EF2C2533BDB
+ > ACC     : None
+
+Programming ...
+Done !
+```
+
+**Note:** You should use your ADM value to program USIM card, not my ADM(-a 62416296).
+{: .notice--warning}
+
+### Installation
+---
+
+We will use *Ubuntu 18.04(Bionic)* installed PC.
+{: .blue .bold}
+
+#### 1. USRP Hardware Driver
+
+Most Linux distributions provide UHD as part of their package management. On *Debian and Ubuntu* systems, this will install the base UHD library, all headers and build-specific files, as well as utilities:
+
+```bash
+$ sudo add-apt-repository ppa:ettusresearch/uhd
+$ sudo apt update
+$ sudo apt install libuhd-dev libuhd003 uhd-host
+```
+
+After installing, you need to download the FPGA images packages by running _uhd images downloader_ on the command line (the actual path may differ based on your installation):
+
+```bash
+$ sudo /usr/lib/uhd/utils/uhd_images_downloader.py
+```
+
+#### 2. srsENB
+
+On *Ubuntu 18.04(Bionic)*, one can install the required libraries with:
+
+```bash
+$ sudo apt install cmake libfftw3-dev libmbedtls-dev libboost-program-options-dev libconfig++-dev libsctp-dev
+```
+
+Download and build srsLTE:
+
+```bash
+➜  git git clone https://github.com/srsLTE/srsLTE.git
+➜  git cd srsLTE
+➜  srsLTE git:(master) ✗ mkdir build
+➜  srsLTE git:(master) ✗ cd build
+➜  build git:(master) ✗ cmake ../
+➜  build git:(master) ✗ make
+➜  build git:(master) ✗ make test
+```
+
+#### 3. NextEPC
+
+The NextEPC package is available on the recent versions of *Ubuntu*.
+
+```bash
+# Getting the authentication key
+$ sudo apt install wget
+$ wget https://download.opensuse.org/repositories/home:/acetcom:/open5gs:/latest/xUbuntu_18.04/Release.key
+$ sudo apt-key add Release.key
+
+# Installing NextEPC
+$ sudo sh -c "echo 'deb https://download.opensuse.org/repositories/home:/acetcom:/open5gs:/latest/xUbuntu_18.04/ ./' > /etc/apt/sources.list.d/open5gs.list"
+$ sudo apt update
+$ sudo apt install nextepc
+```
+
+The following shows how to install the Web UI of NextEPC.
+
+```bash
+$ curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -
+$ sudo apt install nodejs
+$ curl -sL http://nextepc.org/static/webui/install | sudo -E bash -
+```
+
+### Configuration & Running
+---
+
+#### 1. NextEPC
+
+When you purchase the sysmoUSIM, you will receive the following information via e-mail.
+
+```
+Title : sysmocom SIM Card Details / AM93\PICK\00859
+
+IMSI    ICCID   ACC PIN1    PUK1    PIN2    PUK2    Ki  OPC ADM1    KIC1    KID1    KIK1
+...
+901700000017408	8988211000000174089	0100	3623	84724035	8774	57473966	B1233463AB9BC2AD2DB1830EB6417E7B	625150E2A943E3353DD23554101CAFD4	47190711	C865CAA0A54542333929B29B116F4375	7D7F65DCD99003C0A0D5D31CA3E5253E	5B27983AF628FC3FCB36B89300012944
+```
+
+Here's my subscriber information from above.
+
+```
+MCC/MNC : 901/70
+IMSI : 901700000017408
+K : B1233463AB9BC2AD2DB1830EB6417E7B
+OPc : 625150E2A943E3353DD23554101CAFD4  
+```
+
+If you programmed USIM using a card reader like me, you should use the following information.
+```
+MCC/MNC : 310/789
+IMSI : 310789012345301
+K : 82E9053A1882085FF2C020359938DAE9
+OPc : BFD5771AAF4F6728E9BC6EF2C2533BDB  
+```
+
+Connect to `http://localhost:3000` and login with **admin** account.
+
+> Username : admin  
+> Password : 1423
+
+Then proceed as follows:
+
+  1. Go to `Subscriber` Menu.
+  2. Click `+` Button to add a new subscriber.
+  3. Fill the IMSI, security context(K, OPc, AMF), and APN of the subscriber.
+  4. Click `SAVE` Button
+
+Modify [/etc/nextepc/mme.conf](https://github.com/{{ site.github_username }}/nextepc/blob/master/support/config/mme.conf.in) to set the S1AP/GTP-C IP address, PLMN ID, and TAC
+
+```diff
+diff -u mme.conf.old mme.conf
+--- mme.conf.old	2018-04-15 18:28:31.000000000 +0900
++++ mme.conf	2018-04-15 19:53:10.000000000 +0900
+@@ -14,18 +14,20 @@
+ mme:
+     freeDiameter: mme.conf
+     s1ap:
++      addr: 127.0.1.100
+     gtpc:
++      addr: 127.0.1.100
+     gummei:
+       plmn_id:
+-        mcc: 001
+-        mnc: 01
++        mcc: 310
++        mnc: 789
+       mme_gid: 2
+       mme_code: 1
+     tai:
+       plmn_id:
+-        mcc: 001
+-        mnc: 01
+-      tac: 12345
++        mcc: 310
++        mnc: 789
++      tac: 7
+     security:
+         integrity_order : [ EIA1, EIA2, EIA0 ]
+         ciphering_order : [ EEA0, EEA1, EEA2 ]
+```
+
+S1AP/GTP-C IP address, PLMN ID, TAC are changed as follows.
+
+```
+S1AP address : 127.0.1.100 - srsENB default value
+GTP-C address : 127.0.1.100 - Use loopback interface
+PLMN ID : MNC(310), MCC(789) - Programmed USIM with a card reader
+TAC : 7 - srsENB default value
+```
+
+
+The GTP-U IP address will be set to 127.0.0.2. To do this, modify [/etc/nextepc/sgw.conf](https://github.com/{{ site.github_username }}/nextepc/blob/master/support/config/sgw.conf.in) to set the GTP-U IP address.  
+
+```diff
+diff -u /etc/nextepc/sgw.conf.old /etc/nextepc/sgw.conf
+--- sgw.conf.old	2018-04-15 18:30:25.000000000 +0900
++++ sgw.conf	2018-04-15 18:30:30.000000000 +0900
+@@ -14,3 +14,4 @@
+     gtpc:
+       addr: 127.0.0.2
+     gtpu:
++      addr: 127.0.0.2
+```
+
+After changing conf files, please restart NextEPC daemons.
+
+```bash
+$ sudo systemctl restart nextepc-mmed
+$ sudo systemctl restart nextepc-sgwd
+```
+
+If your phone can connect to internet, you must run the following commands in NextEPC-PGW installed host. 
+
+###### Enable IPv4 Forward:
+```
+$ sudo sh -c "echo 1 > /proc/sys/net/ipv4/ip_forward"
+```
+
+###### Check IP Tables:
+```
+$ sudo iptables -L
+Chain INPUT (policy ACCEPT)
+target     prot opt source               destination
+
+Chain FORWARD (policy ACCEPT)
+target     prot opt source               destination
+
+Chain OUTPUT (policy ACCEPT)
+target     prot opt source               destination
+
+$ sudo iptables -L -t nat
+Chain PREROUTING (policy ACCEPT)
+target     prot opt source               destination
+
+Chain INPUT (policy ACCEPT)
+target     prot opt source               destination
+
+Chain OUTPUT (policy ACCEPT)
+target     prot opt source               destination
+
+Chain POSTROUTING (policy ACCEPT)
+target     prot opt source               destination
+```
+
+ - There is nothing on the table. It is in very good condition. If there is somthing in the table, you will need to take some special action. (For example, disable docker service and reboot the machine)
+
+###### If your IP tables is clean, Add IP/NAT Table like the followings:
+```
+$ sudo iptables -t nat -A POSTROUTING -o 'interface-name' -j MASQUERADE
+$ sudo iptables -I INPUT -i pgwtun -j ACCEPT
+```
+
+**Note:** In the above command, you should replace `'interface-name'` with your interface name that can connect to the internet. (For example, `enp0s25`, `wls3`, and so on).
+{: .notice--danger}
+
+#### 2. srsENB
+Change back to the srsENB source directory and copy the main config example as well as all additional config files for RR, SIB and DRB.
+
+```bash
+➜  srsLTE git:(master) ✗ cp srsenb/enb.conf.example srsenb/enb.conf
+➜  srsLTE git:(master) ✗ cp srsenb/rr.conf.example srsenb/rr.conf
+➜  srsLTE git:(master) ✗ cp srsenb/sib.conf.example srsenb/sib.conf
+➜  srsLTE git:(master) ✗ cp srsenb/drb.conf.example srsenb/drb.conf
+```
+
+You should check your phone frequency. If your phone does not support Band-3, you should use a different DL EARFCN value.
+
+```diff
+--- enb.conf.example	2018-11-19 18:16:06.953631893 +0900
++++ enb.conf	2019-04-08 11:15:18.051261318 +0900
+@@ -23,8 +23,8 @@
+ cell_id = 0x01
+ phy_cell_id = 1
+ tac = 0x0007
+-mcc = 001
+-mnc = 01
++mcc = 310
++mnc = 789
+ mme_addr = 127.0.1.100
+ gtp_bind_addr = 127.0.1.1
+ s1c_bind_addr = 127.0.1.1
+@@ -66,12 +66,13 @@
+ #                     Default "auto". B210 USRP: 400 us, bladeRF: 0 us.
+ #####################################################################
+ [rf]
+-dl_earfcn = 3400
++dl_earfcn = 1600
+ tx_gain = 80
+ rx_gain = 40
+
+ #device_name = auto
+ #device_args = auto
++device_args="clock=external"
+ #time_adv_nsamples = auto
+ #burst_preamble_us = auto
+```
+
+PLMN ID, DL EARFCN, and Device Argument are updated as belows.
+
+```
+PLMN ID : MNC(310), MCC(789) programmed USIM with a card reader
+DL EARFCN : Band-3 - from your Phone
+Device Argument : Clock source from external GPS-DO
+```
+
+If you do not use the GPS-DO, you should use:
+```diff
+ #device_name = auto
+-#device_args = auto
++device_args = auto
+ #time_adv_nsamples = auto
+ #burst_preamble_us = auto
+```
+
+Now, run the srsENB as follows:
+
+```bash
+➜  srsLTE git:(master) ✗ cd srsenb/
+➜  srsenb git:(master) ✗ sudo ../build/srsenb/src/srsenb ./enb.conf
+linux; GNU C++ version 6.2.0 20161027; Boost_106200; UHD_003.009.005-0-unknow
+
+---  Software Radio Systems LTE eNodeB  ---
+
+Reading configuration file ./enb.conf...
+-- Loading firmware image: /usr/share/uhd/images/usrp_b200_fw.hex...
+Opening USRP with args: "",master_clock_rate=30.72e6
+-- Detected Device: B200
+-- Loading FPGA image: /usr/share/uhd/images/usrp_b200_fpga.bin... done
+-- Operating over 'USB 2'.
+-- Detecting internal GPSDO.... 'No GPSDO found'
+-- Initialize CODEC control...
+-- Initialize Radio control...
+-- Performing register loopback test... pass
+-- Performing CODEC loopback test... pass
+-- Asking for clock rate 30.720000 MHz...
+-- Actually got clock rate 30.720000 MHz.
+-- Performing timer loopback test... pass
+Setting frequency: DL=1845.0 Mhz, UL=1750.0 MHz
+Setting Sampling frequency 11.52 MHz
+
+==== eNodeB started ===
+Type <t> to view trace
+```
+If you see the `No GPSDO found`, please exit the program with Ctrl-C.
+And also, if you see the 'USB 2', it will not be working properly.
+
+The following console output is the correct result of srsENB.
+```bash
+linux; GNU C++ version 6.2.0 20161027; Boost_106200; UHD_003.009.005-0-unknow
+
+---  Software Radio Systems LTE eNodeB  ---
+
+Reading configuration file ./enb.conf...
+Opening USRP with args: "",master_clock_rate=30.72e6
+-- Detected Device: B200
+-- Operating over USB 3.
+-- Initialize CODEC control...
+-- Initialize Radio control...
+-- Performing register loopback test... pass
+-- Performing CODEC loopback test... pass
+-- Asking for clock rate 30.720000 MHz...
+-- Actually got clock rate 30.720000 MHz.
+-- Performing timer loopback test... pass
+Setting frequency: DL=1845.0 Mhz, UL=1750.0 MHz
+Setting Sampling frequency 11.52 MHz
+
+==== eNodeB started ===
+Type <t> to view trace
+```
+
+### Turn on your eNodeB and Phone
+---
+
+- You can see actual traffic through wireshark -- [[srsenb.pcapng]]({{ site.url }}{{ site.baseurl }}/assets/pcapng/srsenb.pcapng).
+- You can view the log at `/var/log/nextepc/*.log`.

docs/_includes/disqus_comments.html

@@ -0,0 +1,20 @@
+{% if page.comments != false and jekyll.environment == "production" %}
+
+  <div id="disqus_thread"></div>
+  <script>
+    var disqus_config = function () {
+      this.page.url = '{{ page.url | absolute_url }}';
+      this.page.identifier = '{{ page.url | absolute_url }}';
+    };
+
+    (function() {
+      var d = document, s = d.createElement('script');
+
+      s.src = 'https://{{ site.disqus.shortname }}.disqus.com/embed.js';
+
+      s.setAttribute('data-timestamp', +new Date());
+      (d.head || d.body).appendChild(s);
+    })();
+  </script>
+  <noscript>Please enable JavaScript to view the <a href="https://disqus.com/?ref_noscript" rel="nofollow">comments powered by Disqus.</a></noscript>
+{% endif %}

docs/_includes/footer.html

@@ -0,0 +1,42 @@
+<footer id="site-footer">
+  <div class="container">
+    <div class="h5 pt-4">{{ site.title | escape }}</div>
+
+    <div class="row">
+      <div class="col col-lg-3">
+        <ul class="list-unstyled">
+          <li class="text-secondary">
+            {% if site.author %}
+              {{ site.author | escape }}
+            {% else %}
+              {{ site.title | escape }}
+            {% endif %}
+            </li>
+            {% if site.email %}
+              <li><a href="mailto:{{ site.email }}">{{ site.email }}</a></li>
+              <li><i><font size="2">(Please do not mail me directly for technical support. Instead, use <a href="https://github.com/{{ site.github_username }}/nextepc/issues">GitHub Issues</a>.)</font></i></li>
+            {% endif %}
+        </ul>
+      </div>
+      {% if site.footer_icons %}
+      <div class="col-6 col-lg-3">
+        <ul class="list-unstyled">
+          {% for footer_icon in site.footer_icons %}
+            <li>
+              <a href="{{ footer_icon.url }}">
+                {% if footer_icon.icon %}
+                {% capture icon %}{% include {{footer_icon.icon}} %}{% endcapture %}
+                <span class="align-middle text-secondary pr-2">{{ icon | strip }}</span>{% endif %}<span>{{ footer_icon.username }}</span>
+              </a>
+            </li>
+          {% endfor %}
+        </ul>
+      </div>
+      {% endif %}
+      <div class="col-12 col-lg">
+        <p class="text-secondary text-justify">{{ site.description | escape }}</p>
+      </div>
+    </div>
+
+  </div>
+</footer>

docs/_includes/google-analytics.html

@@ -0,0 +1,10 @@
+<script>
+  (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
+  (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
+  m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
+  })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
+
+  ga('create', '{{ site.google_analytics }}', 'auto');
+  ga('send', 'pageview');
+
+</script>

docs/_includes/head.html

@@ -0,0 +1,23 @@
+<head>
+  <meta charset="utf-8">
+  <meta http-equiv="X-UA-Compatible" content="IE=edge">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+
+  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
+  <link rel="stylesheet" href="{{ "/assets/css/main.css" | relative_url }}">
+  <link rel="canonical" href="{{ page.url | replace:'index.html','' | absolute_url }}">
+  <link rel="alternate" type="application/rss+xml" title="{{ site.title | escape }}" href="{{ "/feed.xml" | relative_url }}">
+  <link rel="shortcut icon" href="{{ "/assets/favicon.ico" | relative_url }}">
+
+  {% if page.head_inline %}
+  {{ page.head_inline }}
+  {% endif %}
+
+  {% if jekyll.environment == 'production' and site.google_analytics %}
+  {% include google-analytics.html %}
+  {% endif %}
+
+  {% seo %}
+
+  {% include head-includes.html %}
+</head>

docs/_includes/header.html

@@ -0,0 +1,24 @@
+<header id="nav-header" class="border-dark border-left-0 border-right-0">
+  <div id="nav-container" class="container position-relative d-flex justify-content-between align-items-center">
+    {% assign default_paths = site.pages | map: "path" %}
+    {% assign page_paths = site.header_pages | default: default_paths %}
+    <a class="h4 m-0 text-dark" href="{{ "/" | relative_url }}">{{ site.title | escape }}</a>
+
+    {% if page_paths %}
+      <nav id="nav-menu-container" class="text-right navbar-light">
+        <input type="checkbox" id="nav-trigger" class="d-none"/>
+        <label for="nav-trigger" id="nav-trigger-label" class="m-2 d-inline-block d-md-none navbar-toggler-icon">
+        </label>
+
+        <div id="nav-menu" class="d-none d-md-block">
+          {% for path in page_paths %}
+            {% assign my_page = site.pages | where: "path", path | first %}
+            {% if my_page.title %}
+              <a class="text-dark ml-3 ml-md-0 p-2 d-block d-md-inline-block" href="{{ my_page.url | relative_url }}">{{ my_page.title | escape }}</a>
+            {% endif %}
+          {% endfor %}
+        </div>
+      </nav>
+    {% endif %}
+  </div>
+</header>

docs/_includes/icon-github.svg

@@ -0,0 +1,4 @@
+<svg viewBox="0 0 16 16" width="16px" height="16px" xmlns="http://www.w3.org/2000/svg">
+<title>GitHub</title>
+<path fill="currentColor" d="M7.999,0.431c-4.285,0-7.76,3.474-7.76,7.761 c0,3.428,2.223,6.337,5.307,7.363c0.388,0.071,0.53-0.168,0.53-0.374c0-0.184-0.007-0.672-0.01-1.32 c-2.159,0.469-2.614-1.04-2.614-1.04c-0.353-0.896-0.862-1.135-0.862-1.135c-0.705-0.481,0.053-0.472,0.053-0.472 c0.779,0.055,1.189,0.8,1.189,0.8c0.692,1.186,1.816,0.843,2.258,0.645c0.071-0.502,0.271-0.843,0.493-1.037 C4.86,11.425,3.049,10.76,3.049,7.786c0-0.847,0.302-1.54,0.799-2.082C3.768,5.507,3.501,4.718,3.924,3.65 c0,0,0.652-0.209,2.134,0.796C6.677,4.273,7.34,4.187,8,4.184c0.659,0.003,1.323,0.089,1.943,0.261 c1.482-1.004,2.132-0.796,2.132-0.796c0.423,1.068,0.157,1.857,0.077,2.054c0.497,0.542,0.798,1.235,0.798,2.082 c0,2.981-1.814,3.637-3.543,3.829c0.279,0.24,0.527,0.713,0.527,1.437c0,1.037-0.01,1.874-0.01,2.129 c0,0.208,0.14,0.449,0.534,0.373c3.081-1.028,5.302-3.935,5.302-7.362C15.76,3.906,12.285,0.431,7.999,0.431z"/>
+</svg>

docs/_layouts/allposts.html

@@ -0,0 +1,39 @@
+---
+layout: page
+---
+
+{{ content }}
+
+{% for post in site.posts %}
+
+  {% capture year %}{{ post.date | date: '%Y' }}{% endcapture %}
+
+  {% if forloop.first %}
+    <h2 class="mt-0 h4">{{ year }}</h2>
+    <table class="ml-4">
+  {% elsif year != prev_year %}
+    </table>
+    <h2 class="h4">{{ year }}</h2>
+    <table class="ml-4">
+  {% endif %}
+
+  {% assign date_format = site.minima_reboot.date_format_short | default: "%b %-d" %}
+  <tr>
+    <td class="text-right align-top text-truncate"><time class="text-secondary" datetime="{{ post.date | date:"%Y-%m-%d" }}">{{ post.date | date: date_format }}</time></td>
+    <td class="text-center align-top px-1">|</td>
+    <td class="text-left align-top"><a href="{{ post.url | prepend: site.baseurl }}">{{ post.title | escape }}</a></td>
+  </tr>
+
+  {% if forloop.last %}
+    </table>
+  {% endif %}
+
+  {% capture prev_year %}{{ year }}{% endcapture %}
+
+{% endfor %}
+
+<div class="pt-3"></div>
+
+{% if site.plugins contains "jekyll-feed" %}
+  <a href="{{ "/feed.xml" | relative_url }}"><div id="rss-icon" class="mb-2"></div></a>
+{% endif %}

docs/_layouts/compress.html

@@ -0,0 +1,10 @@
+---
+# Jekyll layout that compresses HTML
+# v3.0.4
+# http://jch.penibelst.de/
+# © 2014–2015 Anatol Broder
+# MIT License
+---
+
+{% capture _LINE_FEED %}
+{% endcapture %}{% if site.compress_html.ignore.envs contains jekyll.environment %}{{ content }}{% else %}{% capture _content %}{{ content }}{% endcapture %}{% assign _profile = site.compress_html.profile %}{% if site.compress_html.endings == "all" %}{% assign _endings = "html head body li dt dd optgroup option colgroup caption thead tbody tfoot tr td th" | split: " " %}{% else %}{% assign _endings = site.compress_html.endings %}{% endif %}{% for _element in _endings %}{% capture _end %}</{{ _element }}>{% endcapture %}{% assign _content = _content | remove: _end %}{% endfor %}{% if _profile and _endings %}{% assign _profile_endings = _content | size | plus: 1 %}{% endif %}{% for _element in site.compress_html.startings %}{% capture _start %}<{{ _element }}>{% endcapture %}{% assign _content = _content | remove: _start %}{% endfor %}{% if _profile and site.compress_html.startings %}{% assign _profile_startings = _content | size | plus: 1 %}{% endif %}{% if site.compress_html.comments == "all" %}{% assign _comments = "<!-- -->" | split: " " %}{% else %}{% assign _comments = site.compress_html.comments %}{% endif %}{% if _comments.size == 2 %}{% capture _comment_befores %}.{{ _content }}{% endcapture %}{% assign _comment_befores = _comment_befores | split: _comments.first %}{% for _comment_before in _comment_befores %}{% if forloop.first %}{% continue %}{% endif %}{% capture _comment_outside %}{% if _carry %}{{ _comments.first }}{% endif %}{{ _comment_before }}{% endcapture %}{% capture _comment %}{% unless _carry %}{{ _comments.first }}{% endunless %}{{ _comment_outside | split: _comments.last | first }}{% if _comment_outside contains _comments.last %}{{ _comments.last }}{% assign _carry = false %}{% else %}{% assign _carry = true %}{% endif %}{% endcapture %}{% assign _content = _content | remove_first: _comment %}{% endfor %}{% if _profile %}{% assign _profile_comments = _content | size | plus: 1 %}{% endif %}{% endif %}{% assign _pre_befores = _content | split: "<pre" %}{% assign _content = "" %}{% for _pre_before in _pre_befores %}{% assign _pres = _pre_before | split: "</pre>" %}{% assign _pres_after = "" %}{% if _pres.size != 0 %}{% if site.compress_html.blanklines %}{% assign _lines = _pres.last | split: _LINE_FEED %}{% capture _pres_after %}{% for _line in _lines %}{% assign _trimmed = _line | split: " " | join: " " %}{% if _trimmed != empty or forloop.last %}{% unless forloop.first %}{{ _LINE_FEED }}{% endunless %}{{ _line }}{% endif %}{% endfor %}{% endcapture %}{% else %}{% assign _pres_after = _pres.last | split: " " | join: " " %}{% endif %}{% endif %}{% capture _content %}{{ _content }}{% if _pre_before contains "</pre>" %}<pre{{ _pres.first }}</pre>{% endif %}{% unless _pre_before contains "</pre>" and _pres.size == 1 %}{{ _pres_after }}{% endunless %}{% endcapture %}{% endfor %}{% if _profile %}{% assign _profile_collapse = _content | size | plus: 1 %}{% endif %}{% if site.compress_html.clippings == "all" %}{% assign _clippings = "html head title base link meta style body article section nav aside h1 h2 h3 h4 h5 h6 hgroup header footer address p hr blockquote ol ul li dl dt dd figure figcaption main div table caption colgroup col tbody thead tfoot tr td th" | split: " " %}{% else %}{% assign _clippings = site.compress_html.clippings %}{% endif %}{% for _element in _clippings %}{% assign _edges = " <e;<e; </e>;</e>;</e> ;</e>" | replace: "e", _element | split: ";" %}{% assign _content = _content | replace: _edges[0], _edges[1] | replace: _edges[2], _edges[3] | replace: _edges[4], _edges[5] %}{% endfor %}{% if _profile and _clippings %}{% assign _profile_clippings = _content | size | plus: 1 %}{% endif %}{{ _content }}{% if _profile %} <table id="compress_html_profile_{{ site.time | date: "%Y%m%d" }}" class="compress_html_profile"> <thead> <tr> <td>Step <td>Bytes <tbody> <tr> <td>raw <td>{{ content | size }}{% if _profile_endings %} <tr> <td>endings <td>{{ _profile_endings }}{% endif %}{% if _profile_startings %} <tr> <td>startings <td>{{ _profile_startings }}{% endif %}{% if _profile_comments %} <tr> <td>comments <td>{{ _profile_comments }}{% endif %}{% if _profile_collapse %} <tr> <td>collapse <td>{{ _profile_collapse }}{% endif %}{% if _profile_clippings %} <tr> <td>clippings <td>{{ _profile_clippings }}{% endif %} </table>{% endif %}{% endif %}

docs/_layouts/default.html

@@ -0,0 +1,23 @@
+---
+layout: compress
+---
+<!DOCTYPE html>
+<html lang="{{ page.lang | default: site.lang | default: "en" }}">
+
+  {% include head.html %}
+
+  <body>
+
+    {% include header.html %}
+
+    <main aria-label="Content">
+      <div class="container">
+        {{ content }}
+      </div>
+    </main>
+
+    {% include footer.html %}
+
+  </body>
+
+</html>

docs/_layouts/home.html

@@ -0,0 +1,52 @@
+---
+layout: default
+---
+
+<header class="pt-3 mb-3">
+  {{ content }}
+</header>
+
+<div id="content">
+
+  {% if site.paginate %}
+    {% assign posts = paginator.posts %}
+  {% else %}
+    {% assign posts = site.posts %}
+  {% endif %}
+
+  <ul class="list-unstyled m-0">
+    {% assign date_format = site.minima_reboot.date_format | default: "%b %-d, %Y" %}
+    {% for post in posts %}
+      <li class="py-2">
+        <span class="text-secondary">{{ post.date | date: date_format }}</span>
+
+        <h1 class="mt-1 mb-3 h3">
+          <a href="{{ post.url | relative_url }}">{{ post.title | escape }}</a>
+        </h1>
+
+        <div class="text-justify">
+          {{ post.excerpt }}
+        </div>
+      </li>
+    {% endfor %}
+  </ul>
+
+  {% if site.paginate %}
+  <nav class="py-1" aria-label="Blog page navigation">
+    {% if paginator.previous_page %}
+      <a href="{{ paginator.previous_page_path | relative_url }}">&laquo; Previous</a>
+    {% endif %}
+
+    Page: {{ paginator.page }} of {{ paginator.total_pages }}
+
+    {% if paginator.next_page %}
+      <a href="{{ paginator.next_page_path | relative_url }}">Next &raquo;</a>
+    {% endif %}
+  </nav>
+  {% endif %}
+
+  {% if site.plugins contains "jekyll-feed" %}
+    <a href="{{ "/feed.xml" | relative_url }}"><div id="rss-icon" class="mb-2"></div></a>
+  {% endif %}
+
+</div>

docs/_layouts/page.html

@@ -0,0 +1,14 @@
+---
+layout: default
+---
+<article>
+
+  <header class="pt-4 pb-3">
+    <h1>{{ page.title | escape }}</h1>
+  </header>
+
+  <div id="content">
+    {{ content }}
+  </div>
+
+</article>

docs/_layouts/post.html

@@ -0,0 +1,33 @@
+---
+layout: default
+---
+<article itemscope itemtype="http://schema.org/BlogPosting">
+
+  <header class="pt-4 pb-3">
+    <h1 itemprop="name headline">{{ page.title | escape }}</h1>
+    <p class="text-secondary">
+      {% if page.author %}
+        {% if page.author_url %}
+          <a href="{{ page.author_url }}">
+        {% endif %}
+        <span itemprop="author" itemscope itemtype="http://schema.org/Person"><span itemprop="name">{{ page.author }}</span></span>
+        {% if page.author_url %}
+          </a>
+        {% endif %}
+        &bull;
+      {% endif %}
+      <time datetime="{{ page.date | date_to_xmlschema }}" itemprop="datePublished">
+        {% assign date_format = site.minima_reboot.date_format | default: "%b %-d, %Y" %}
+        {{ page.date | date: date_format }}
+      </time>
+    </p>
+  </header>
+
+  <div class="text-justify" itemprop="articleBody" id="content">
+    {{ content }}
+  </div>
+
+  {% if site.disqus.shortname %}
+    {% include disqus_comments.html %}
+  {% endif %}
+</article>

docs/_pages/404.html

@@ -0,0 +1,25 @@
+---
+layout: default
+permalink: /404.html
+---
+
+<style type="text/css" media="screen">
+  .container {
+    margin: 10px auto;
+    max-width: 600px;
+    text-align: center;
+  }
+  h1 {
+    margin: 30px 0;
+    font-size: 4em;
+    line-height: 1;
+    letter-spacing: -1px;
+  }
+</style>
+
+<div class="container">
+  <h1>404</h1>
+
+  <p><strong>Page not found :(</strong></p>
+  <p>The requested page could not be found.</p>
+</div>

docs/_pages/about.md

@@ -0,0 +1,29 @@
+---
+layout: page
+title: About
+permalink: /about/
+---
+
+NextEPC is a C-language Open Source implementation of the 3GPP Evolved Packet Core, i.e. the core network of an LTE network.
+
+#### Supported Features
+---
+
+- LTE release 14 complient
+- AES, Snow3G, ZUC algorithms for encryption
+- Support of USIM cards using Milenage
+- Multiple PDN support
+- S1/X2 Handover
+- IPv6 support
+- Supports several IMS servers with Rx interface.
+
+#### Known Limitations
+---
+
+- No OCS/OFCS
+- No NB-IoT
+- No eMBMS
+- No CS Fallback and SRVCC
+- No Roaming
+- No Emergency Call
+- No ePDG Gateway

docs/_pages/docs.md

@@ -0,0 +1,21 @@
+---
+layout: page
+title: Documentation
+permalink: /docs/
+head_inline: "<style> ul { padding-bottom: 1em; } </style>"
+---
+
+- User's Guide
+  - [Quickstart](guide/01-quickstart)
+  - [Building nextepc from Sources](guide/02-building-nextepc-from-sources)
+
+- Tutorials
+  - [Your First LTE](tutorial/01-your-first-lte)
+
+- Platform Specific Notes
+  - [Debian/Ubuntu](platform/01-debian-ubuntu)
+  - [CentOS](platform/02-centos)
+  - [Fedora](platform/03-fedora)
+  - [FreeBSD](platform/04-freebsd)
+  - [MacOSX](platform/05-macosx)
+  - [Ubuntu(Trusty)](platform/06-ubuntu-trusty)

docs/_pages/faq.md

@@ -0,0 +1,285 @@
+---
+layout: page
+title: FAQ
+permalink: /faq/
+---
+
+#### How to connect MongoDB server
+
+If you do not start MongoDB, you will get the following error:
+
+```bash
+➜  nextepc git:(master) ✗ ./test/testsimple  
+04/09 15:42:34.817: [core] ERROR: Failed to conect to server [mongodb://localhost/nextepc] (context.c:326)  
+04/09 15:42:34.817: [core] ERROR: app_initialize() failed (basic/abts-main.c:91)  
+s1ap_message_test   : -04/09 15:42:34.830: [s1ap] ERROR: Failed to decode S1AP-PDU[-1] (s1ap_encoder.c:41)  
+04/09 15:42:34.830: [core] FATAL: ogs_log_vprintf: Assertion `domain' failed. (ogs-log.c:347)  
+```
+
+You can start MongoDB using systemctl.
+```bash
+$ sudo systemctl start mongodb
+```
+
+#### Failing to run `./nextepc-epcd`
+
+You might be getting the following error after running `./nextepc-epcd`.
+```bash
+➜  nextepc git:(master) ./nextepc-epcd  
+04/09 15:41:02.600: [core] INFO: NextEPC daemon start (main.c:169)  
+04/09 15:41:02.601: [core] ERROR: CHECK PERMISSION of Installation Directory... (application.c:144)  
+04/09 15:41:02.601: [core] ERROR: Cannot create PID file:`/home/acetcom/Documents/git/open5gs/nextepc/install/var/run/nextepc-epcd/pid` (application.c:145)  
+04/09 15:41:02.601: [core] WARNING: log_pid: should not be reached. (application.c:146)  
+/home/acetcom/Documents/git/open5gs/nextepc/lib/ogslib/src/core/.libs/libogscore-1.0.so.0(ogs_abort+0x2b)[0x7f9d5d26d71b]  
+/home/acetcom/Documents/git/open5gs/nextepc/.libs/nextepc-epcd(+0x9606)[0x563a4ba23606]  
+/home/acetcom/Documents/git/open5gs/nextepc/.libs/nextepc-epcd(+0x8640)[0x563a4ba22640]  
+/home/acetcom/Documents/git/open5gs/nextepc/.libs/nextepc-epcd(+0x81f3)[0x563a4ba221f3]  
+[1]    9635 abort (core dumped)  ./nextepc-epcd
+```
+
+You should perform **the installation process**.
+
+```bash
+$ make install
+```
+
+#### I have some error when running `./test/testcomplex`
+
+Did you see the following error after executing `testcomplex`?
+```bash
+➜  nextepc git:(master) ✗ ./test/testcomplex  
+s1setup_test        : SUCCESS  
+attach_test         : -Line 134: Condition is false, but expected true  
+\04/09 15:49:09.285: [esm] FATAL: esm_handle_pdn_connectivity_request: Assertion `SECURITY_CONTEXT_IS_VALID(mme_ue)' failed. (esm_handler.c:29)  
+/home/acetcom/Documents/git/open5gs/nextepc/lib/ogslib/src/core/.libs/libogscore-1.0.so.0(ogs_abort+0x2b)[0x7f608518271b]  
+/home/acetcom/Documents/git/open5gs/nextepc/test/.libs/testcomplex(+0x92121)[0x55dc9e274121]  
+/home/acetcom/Documents/git/open5gs/nextepc/test/.libs/testcomplex(+0x4f5b9)[0x55dc9e2315b9]  
+```
+
+
+Remove all subscriber information using MongoDB Client
+```
+$ mongo
+> db.subscribers.find()  ### Check the test subscriber
+> db.subscribers.drop()  ### Remove all subscriber
+> db.subscribers.find()  ### Check that all subscribers are empty
+```
+
+Kill all processes.
+```bash
+$ ps -ef | grep testcomplex
+$ ps -ef | grep nextepc
+$ sudo pkill -9 testcomplex
+$ sudo pkill -9 nextepc-epcd ...
+```
+
+Execute `testcomplex`
+```bash
+$ ./test/testcomplex
+```
+
+#### My eNB does not support IPv6.
+
+Your eNodeB don't have to support IPv6.
+
+If the sgw.gtpu configuration does not have an IPv6 address, the eNodeB can use IPv4 to connect to the MME and SGW. If the sgw.gtpu setting has an IPv6 address, you can disable the IPv6 address as shown below.
+
+```yaml
+parameter:
+    no_ipv6: true
+```
+
+**Note:** This parameter `no_ipv6` is only applied to EPC Elements such as MME, SGW, and so on. The parameter `no_ipv6` does not affect to UE. So, IPv6-enabled UE can connect to NextEPC LTE network.
+{: .notice--warning}
+
+#### Unable to add new user by WebUI 
+
+It might be a CSRF token mismatch error.
+Please, delete corresponding cookies, cache, session data etc.
+
+#### Change Domain from localdomain to anything else
+
+You should configure the domain name on your computer. Otherwise, freeDiameter raise an error.
+
+#### How many of UEs can NextEPC support?
+
+See the [lib/base/types.h](https://github.com/{{ site.github_username }}/nextepc/blob/master/lib/base/types.h).
+
+```
+#define MAX_NUM_OF_ENB              128
+#define MAX_NUM_OF_UE               128
+#define MAX_NUM_OF_SESS             4
+#define MAX_NUM_OF_BEARER           4
+#define MAX_NUM_OF_TUNNEL           3   /* Num of Tunnel per Bearer */
+#define MAX_NUM_OF_PF               16  /* Num of Packet Filter per Bearer */
+
+#define MAX_POOL_OF_UE              (MAX_NUM_OF_ENB * MAX_NUM_OF_UE)
+#define MAX_POOL_OF_SESS            (MAX_POOL_OF_UE * MAX_NUM_OF_SESS)
+#define MAX_POOL_OF_BEARER          (MAX_POOL_OF_SESS * MAX_NUM_OF_BEARER)
+#define MAX_POOL_OF_TUNNEL          (MAX_POOL_OF_BEARER * MAX_NUM_OF_TUNNEL)
+#define MAX_POOL_OF_PF              (MAX_POOL_OF_BEARER * MAX_NUM_OF_PF)
+#define MAX_POOL_OF_DIAMETER_SESS   (MAX_POOL_OF_UE * MAX_NUM_OF_SESS)
+```
+
+Currently, the number of UE is limited to `128*128`.
+
+#### What is the Default Configuration?
+
+- Network
+
+```
+* MME
+  S1AP: listen on all address avaiable in system
+  GTP-C: listen on the first IP address in system
+  DIAMETER: 127.0.0.2 (No TLS)
+
+* SGW
+  GTP-C: 127.0.0.2
+  GTP-U: listen on the first IP address in system
+
+* PGW
+  GTP-C: Both 127.0.0.3 and [::1]
+  GTP-U: Both 127.0.0.3 and [::1]
+  DIAMETER: 127.0.0.3 (No TLS)
+
+* HSS
+  DIAMETER: 127.0.0.4 (No TLS)
+
+* PCRF
+  DIAMETER: 127.0.0.5 (No TLS)
+```
+
+- GUMMEI, PLMN and TAC
+
+```
+* GUMMEI
+  PLMN ID - MNC: 001, MCC: 01
+  MME Group : 2
+  MME Code : 1
+
+* TAI
+  PLMN ID - MNC: 001, MCC: 01
+  TAC : 12345
+```
+
+- Security
+
+```
+* Integrity : EIA1 - Snow 3G
+* Ciphering : EEA0 - Nothing
+```
+
+- UE Network
+
+```
+* IPv4 : 45.45.0.1/16
+* IPv6 : cafe::1/64
+```
+
+- DNS
+
+```
+* IPv4
+  Primary : 8.8.8.8 
+  Secondary : 8.8.4.4
+
+* IPv6
+  Primary : 2001:4860:4860::8888
+  Secondary : 2001:4860:4860::8844
+```
+
+#### The parsing errors are caused by tab spaces in the configuration files.
+
+YAML forbids tabs. You should use space instead of tab in NextEPC configuration file.
+
+```markdown
+YAML FAQ: Why does YAML forbid tabs?
+
+Tabs have been outlawed since they are treated differently by different editors and tools. And since indentation is so critical to proper interpretation of YAML, this issue is just too tricky to even attempt. Indeed Guido van Rossum of Python has acknowledged that allowing TABs in Python source is a headache for many people and that were he to design Python again, he would forbid them.
+```
+
+#### Cross compilation setup
+
+By default, NextEPC is designed to support the Embedding System. To do so, we introduced pool-based memory management. Unfortunately, we have not tested NextEPC in an embedded environment. I tried to compile on the ARM architecture using Docker and run it with QEMU for your reference.
+
+- We'll use Debian Docker Environment.
+
+```bash
+$ git clone -r https://github.com/acetcom/nextepc
+$ cd nextepc/docker
+$ DIST=debian docker-compose run dev
+```
+
+- In Docker Container
+
+```bash
+acetcom@nextepc-dev:~$ sudo dpkg --add-architecture armel
+acetcom@nextepc-dev:~$ sudo apt-get install libsctp-dev:armel libyaml-dev:armel libgnutls28-dev:armel libgcrypt-dev:armel libssl-dev:armel libmongoc-dev:armel libbson-dev:armel
+acetcom@nextepc-dev:~$ sudo apt-get install crossbuild-essential-armel
+acetcom@nextepc-dev:~$ sudo apt-get install qemu
+
+acetcom@nextepc-dev:~$ mkdir git
+acetcom@nextepc-dev:~$ cd git/
+acetcom@nextepc-dev:~/git$ git clone https://github.com/acetcom/nextepc
+acetcom@nextepc-dev:~/git$ cd nextepc/
+acetcom@nextepc-dev:~/git/nextepc$ autoreconf -if;./configure --prefix=`pwd`/install --host=arm-linux-gnueabi;make -j 2
+acetcom@nextepc-dev:~/git/nextepc$ make install
+acetcom@nextepc-dev:~/git/nextepc$ qemu-arm .libs/nextepc-mmed
+NextEPC daemon v0.3.10 - Oct  4 2018 13:24:24
+
+[10/04 13:38:06.329] WARN: pid file /home/acetcom/git/nextepc/install/var/run/nextepc-mmed/pid overwritten -- Unclean shutdown of previous NextEPC run? (application.c:113)
+  PID[55780] : '/home/acetcom/git/nextepc/install/var/run/nextepc-mmed/pid'
+  File Logging : '/home/acetcom/git/nextepc/install/var/log/nextepc/nextepc.log'
+qemu: Unsupported syscall: 345
+qemu: Unsupported syscall: 345
+qemu: Unsupported syscall: 345
+qemu: Unsupported syscall: 345
+qemu: Unsupported syscall: 345
+qemu: Unsupported syscall: 345
+qemu: Unsupported syscall: 345
+qemu: Unsupported syscall: 345
+  MongoDB URI : 'mongodb://mongodb/nextepc'
+  Configuration : '/home/acetcom/git/nextepc/install/etc/nextepc/nextepc.conf'
+[10/04 13:38:06.400] MME try to initialize
+Unknown host QEMU_IFLA type: 40
+Unknown host QEMU_IFLA type: 41
+Unknown host QEMU_IFLA type: 40
+Unknown host QEMU_IFLA type: 41
+Unknown QEMU_IFLA_INFO_KIND ipip
+Unknown host QEMU_IFLA type: 40
+Unknown host QEMU_IFLA type: 41
+Unknown QEMU_IFLA_INFO_KIND ip6tnl
+Unknown host QEMU_IFLA type: 40
+Unknown host QEMU_IFLA type: 41
+Unknown host QEMU_IFLA type: 40
+Unknown host QEMU_IFLA type: 41
+Unknown host QEMU_IFLA type: 40
+Unknown host QEMU_IFLA type: 41
+Unknown host QEMU_IFLA type: 40
+Unknown host QEMU_IFLA type: 41
+Unknown QEMU_IFLA_INFO_KIND ipip
+Unknown host QEMU_IFLA type: 40
+Unknown host QEMU_IFLA type: 41
+Unknown QEMU_IFLA_INFO_KIND ip6tnl
+Unknown host QEMU_IFLA type: 40
+Unknown host QEMU_IFLA type: 41
+Unknown host QEMU_IFLA type: 40
+Unknown host QEMU_IFLA type: 41
+[10/04 13:38:08.693] gtp_server() [172.20.0.2]:2123
+[10/04 13:38:08.696] gtp_client() [127.0.0.2]:2123
+Unsupported setsockopt level=132 optname=11
+[10/04 13:38:08.697] ERRR: Unable to subscribe to SCTP events: (92:Protocol not available) (unix/sctp.c:291)
+[10/04 13:38:08.699] ASSERT: !(rv == CORE_OK).  (unix/sctp.c:33)
+[10/04 13:38:08.700] ERRR: sctp_server() [172.20.0.2]:36412 failed(92:Protocol not available) (unix/sctp.c:98)
+[10/04 13:38:08.701] ASSERT: !(rv == CORE_OK).  (s1ap_sctp.c:35)
+[10/04 13:38:08.702] ASSERT: !(rv == CORE_OK).  (s1ap_path.c:53)
+[10/04 13:38:08.703] ASSERT: !(rv == CORE_OK).  (s1ap_path.c:28)
+[10/04 13:38:08.704] ERRR: Can't establish S1AP path (mme_sm.c:63)
+[10/04 13:38:08.708] MME initialize...done
+
+
+[10/04 13:38:08.710] INFO: NextEPC daemon start (main.c:157)
+```
+
+The SCTP module is not included in the QEMU kernel. I believe that if the Linux kernel installed on your target platform contains an SCTP module, it will work normally.
+{: .notice--warning}

docs/_pages/github.md

@@ -0,0 +1,5 @@
+---
+title: GitHub
+redirect_to:
+  - https://github.com/open5gs/nextepc
+---

docs/_pages/home.md

@@ -0,0 +1,5 @@
+---
+layout: allposts
+list_title: News
+permalink: /
+---

docs/_posts/2017-02-01-programming-started.md

@@ -0,0 +1,9 @@
+---
+title: "Programming started."
+date: 2017-02-01 19:48:49 +0900
+categories:
+  - Release
+tags:
+  - News
+  - Release
+---

docs/_posts/2017-10-09-release-v0.1.0.md

@@ -0,0 +1,11 @@
+---
+title:  "First version released."
+date:   2017-10-09 11:03:15 +0900
+categories:
+  - Release
+tags:
+  - News
+  - Release
+---
+
+- Assets -- [v0.1.0.tar.gz](https://github.com/open5gs/nextepc/archive/v0.1.0.tar.gz)

docs/_posts/2017-10-11-release-v0.1.1.md

@@ -0,0 +1,12 @@
+---
+title:  "v0.1.1 - Fix the bug related to Mongo C Driver"
+date:   2017-10-11 15:46:45 +0900
+categories:
+  - Release
+tags:
+  - News
+  - Release
+---
+
+- Fix the bug related to Mongo C Driver. [[More Info](https://github.com/open5gs/nextepc/commit/4245502ae287df9c457621b3f4cccb519c4d4878)]
+- Assets -- [v0.1.1.tar.gz](https://github.com/open5gs/nextepc/archive/v0.1.1.tar.gz)

docs/_posts/2017-11-02-release-v0.2.0.md

@@ -0,0 +1,14 @@
+---
+title: "v0.2.0 - Package Publish, Support More OS"
+date: 2017-11-02 17:21:21 +0900
+categories:
+  - Release
+tags:
+  - News
+  - Release
+---
+
+- Publish Debian/Ubuntu Package
+- Support FreeBSD and Mac OS X"
+
+- Assets -- [v0.2.0.tar.gz](https://github.com/open5gs/nextepc/archive/v0.2.0.tar.gz)

docs/_posts/2017-12-18-release-v0.3.0.md

@@ -0,0 +1,14 @@
+---
+title: "v0.3.0 - IPv6 Support, Change Configuration File Format"
+date: 2017-12-18 20:57:47 +0900
+categories:
+  - Release
+tags:
+  - News
+  - Release
+---
+
+- IPv6 Support (Linux Only)
+- Change Configuration File (JSON -> YAML)
+
+- Assets -- [v0.3.0.tar.gz](https://github.com/open5gs/nextepc/archive/v0.3.0.tar.gz)

docs/_posts/2017-12-31-release-v0.3.1.md

@@ -0,0 +1,12 @@
+---
+title: "v0.3.1 - Bug Fixes"
+date: 2017-12-31 22:20:39 +0900
+categories:
+  - Release
+tags:
+  - News
+  - Release
+---
+
+- Add Authentication Synch Failure ([#11](https://github.com/open5gs/nextepc/issues/11)) -- [eric80s](https://github.com/eric80s)
+- Assets -- [v0.3.1.tar.gz](https://github.com/open5gs/nextepc/archive/v0.3.1.tar.gz)

docs/_posts/2018-02-13-release-v0.3.3.md

@@ -0,0 +1,20 @@
+---
+title: "v0.3.3 - Docker Support"
+date: 2018-02-13 04:50:34 +0900
+categories:
+  - Release
+tags:
+  - News
+  - Release
+head_inline: "<style> ul { padding-bottom: 1em; } </style>"
+---
+
+#### New
+- Docker support ([#16](https://github.com/open5gs/nextepc/issues/16)) -- [amilenovic](https://github.com/amilenovic)
+
+#### Bug fixes
+- Fix the BUG for MAC failure of authentication failure -- [#17](https://github.com/open5gs/nextepc/issues/17) from [razaborg](https://github.com/razaborg)
+- Fix the BUG for EPS attach type of Attach accept -- [#12](https://github.com/open5gs/nextepc/issues/12) from [pcminitech](https://github.com/pcminitech)
+
+Download -- [v0.3.3.tar.gz](https://github.com/open5gs/nextepc/archive/v0.3.3.tar.gz)
+{: .notice--info}

docs/_posts/2018-03-06-release-v0.3.5.md

@@ -0,0 +1,20 @@
+---
+title: "v0.3.5 - Support Network Name"
+date: 2018-03-06 12:43:34 +0900
+categories:
+  - Release
+tags:
+  - News
+  - Release
+head_inline: "<style> ul { padding-bottom: 1em; } </style>"
+---
+
+#### New
+- Support Network Name ([#22](https://github.com/open5gs/nextepc/pull/22)) -- [medeiros405](https://github.com/medeiros405)
+
+#### Bug fixes
+- Fix the BUG for security capabilities mismatch ([#27](https://github.com/open5gs/nextepc/issues/27)) -- [wayne43290](https://github.com/wayne43290)
+- Fix the BUG that SGW process is dead during paging process ([#18](https://github.com/open5gs/nextepc/issues/18)) -- [jackson040407](https://github.com/jackson040407)
+
+Download -- [v0.3.5.tar.gz](https://github.com/open5gs/nextepc/archive/v0.3.5.tar.gz)
+{: .notice--info}

docs/_posts/2018-03-21-release-v0.3.6.md

@@ -0,0 +1,15 @@
+---
+title: "v0.3.6 - More S1AP Message"
+date: 2018-03-21 08:05:56 +0900
+categories:
+  - Release
+tags:
+  - News
+  - Release
+---
+
+- Support eNB/MME Configuration Transfer, Error Indication ([#29](https://github.com/open5gs/nextepc/issues/29)) -- [wayne43290](https://github.com/wayne43290)
+- Increase SCTP recv buffer : 2048->8192 ([#35](https://github.com/open5gs/nextepc/issues/35)) -- [EugeneBogush](https://github.com/EugeneBogush)
+
+Download -- [v0.3.6.tar.gz](https://github.com/open5gs/nextepc/archive/v0.3.6.tar.gz)
+{: .notice--info}

docs/_posts/2018-04-14-release-v0.3.7.md

@@ -0,0 +1,12 @@
+---
+title: "v0.3.7 - S1AP supports Release 14.4.0"
+date: 2018-04-14 15:04:04 +0900
+categories:
+  - Release
+tags:
+  - News
+  - Release
+---
+
+Download -- [v0.3.7.tar.gz](https://github.com/open5gs/nextepc/archive/v0.3.7.tar.gz)
+{: .notice--info}

docs/_posts/2018-06-03-release-v0.3.9.md

@@ -0,0 +1,23 @@
+---
+title: "v0.3.9 - Support NAS encryption"
+date: 2018-06-03 01:42:05 +0000
+categories:
+  - Release
+tags:
+  - News
+  - Release
+head_inline: "<style> ul { padding-bottom: 1em; } </style>"
+---
+
+#### New
+- Support NAS encryption(EEA1/EEA2/EEA3)
+
+#### Bug fixes
+- Confirm with 36.412 requirement of SCTP stream id ([#54](https://github.com/open5gs/nextepc/issues/54)) -- [brchiu](https://github.com/brchiu)
+- Fix to set correct timezone in UE ([#61](https://github.com/open5gs/nextepc/pull/61)) -- [medeiros405](https://github.com/medeiros405)
+- Fix to change MME's integrity order ([#64](https://github.com/open5gs/nextepc/issues/64)) -- [kewinrausch](https://github.com/kewinrausch)
+- Fix the bug for tracking area update ([#29](https://github.com/open5gs/nextepc/issues/29)) -- [wayne43290](https://github.com/wayne43290)
+- Fix the bug for indirect tunnel ([#29](https://github.com/open5gs/nextepc/issues/29)) -- [wayne43290](https://github.com/wayne43290)
+
+Download -- [v0.3.9.tar.gz](https://github.com/open5gs/nextepc/archive/v0.3.9.tar.gz)
+{: .notice--info}

docs/_posts/2018-08-17-release-v0.3.10.md

@@ -0,0 +1,21 @@
+---
+title: "v0.3.10 - Bug Fixes"
+date: 2018-08-17 04:28:50 +0000
+categories:
+  - Release
+tags:
+  - News
+  - Release
+head_inline: "<style> ul { padding-bottom: 1em; } </style>"
+---
+
+#### Bug fixes
+  - Renew freeDiameter Certificate ([#93](https://github.com/open5gs/nextepc/issues/93), [#94](https://github.com/open5gs/nextepc/issues/94)) -- [Ravi-t](https://github.com/Ravi-t), [hchenji](https://github.com/hchenji)
+  - Fix TLV uint32 bug ([#73](https://github.com/open5gs/nextepc/pull/73)) -- [giuliol](https://github.com/giuliol)
+  - Add TRACE for IP address of connected UEs ([#71](https://github.com/open5gs/nextepc/issues/71)) -- [pgupta408](https://github.com/Ravi-t)
+  - Show reason string for YAML parser error ([#40](https://github.com/open5gs/nextepc/issues/40)) -- [Raw1mage](https://github.com/Raw1mage)
+  - Fix compile error for GCC 8.1
+  - Fix compile error for Mongo-C-Driver 1.11
+
+Download -- [v0.3.10.tar.gz](https://github.com/open5gs/nextepc/archive/v0.3.10.tar.gz)
+{: .notice--info}

docs/_posts/2019-04-28-release-v0.3.11.md

@@ -0,0 +1,28 @@
+---
+title: "v0.3.11 - First version in 2019"
+date: 2019-04-28 20:28:00 +0900
+categories:
+  - Release
+tags:
+  - News
+  - Release
+head_inline: "<style> ul { padding-bottom: 1em; } </style>"
+---
+
+#### Enhancements
+- Support 4-bytes RES in NAS Auth ([#147](https://github.com/open5gs/nextepc/issues/147)) -- [Ranjjiitsingh](https://github.com/Ranjjiitsingh)
+- Add SGW selection mode ([#100](https://github.com/open5gs/nextepc/pull/100)) -- [TerryAlu](https://github.com/TerryAlu)
+
+#### Bug fixes
+- Increase packet memory buffer ([#161](https://github.com/open5gs/nextepc/issues/161)) -- [mathieuxilan](https://github.com/mathieuxilan)
+- Fix setting END-ID to 0 ([#156](https://github.com/open5gs/nextepc/issues/156)) -- [hypercloud2017](https://github.com/hypercloud2017)
+- Fix incorrect timezone in NAS & GTP ([#140](https://github.com/open5gs/nextepc/issues/140)) --  [EugeneBogush](https://github.com/EugeneBogush)
+
+#### Miscellaneous
+- nas_message.py: Fix copy+paste error([#159](https://github.com/open5gs/nextepc/issues/159)) -- [laf0rge](https://github.com/laf0rge)
+- Fix missing 'break' statement ([#129](https://github.com/open5gs/nextepc/pull/129)) -- [EugeneBogush](https://github.com/EugeneBogush)
+- Add missing C namespace ([#109](https://github.com/open5gs/nextepc/pull/109)) -- [brchiu](https://github.com/brchiu)
+- Refine EXIT routine for daemon process
+
+Download -- [v0.3.11.tar.gz](https://github.com/open5gs/nextepc/archive/v0.3.11.tar.gz)
+{: .notice--info}

docs/_posts/2019-04-29-release-v0.4.0.md

@@ -0,0 +1,20 @@
+---
+title: "v0.4.0 - Integration with OGSLib"
+date: 2019-04-29 23:44:00 +0900
+categories:
+  - Release
+tags:
+  - News
+  - Release
+head_inline: "<style> ul { padding-bottom: 1em; } </style>"
+---
+
+#### Enhancements
+- Integration with OGSLib
+- High CPU usage on idle ([#87](https://github.com/open5gs/nextepc/issues/87)) -- [hchenji](https://github.com/hchenji)
+
+#### Bug fixes
+- The problem related to MNC of LENGTH 3 ([#163](https://github.com/open5gs/nextepc/issues/163)) -- [Avi-Dekra](https://github.com/Avi-Dekra)
+
+Download -- [v0.4.0.tar.gz](https://github.com/open5gs/nextepc/archive/v0.4.0.tar.gz)
+{: .notice--info}

docs/_posts/2019-05-18-release-v0.4.1.md

@@ -0,0 +1,24 @@
+---
+title: "v0.4.1 - Stable version of v0.4.x"
+date: 2019-05-18 19:06:00 +0900
+categories:
+  - Release
+tags:
+  - News
+  - Release
+head_inline: "<style> ul { padding-bottom: 1em; } </style>"
+---
+
+#### Minor changes
+- Rearrange the initialization order [[2d74383](https://github.com/open5gs/nextepc/commit/2d7438313d7426ca3ad4591f090b7f8564257fb7)]
+- Remove ____DATE____ and ____TIME____ from all source code to make the same binary. [[c8ed909](https://github.com/open5gs/nextepc/commit/c8ed909f4680225490ac23d2d56e7d8f8112d6f6)]
+- Improve sanity checks when queues cannot be pushed [[bc180c3](https://github.com/open5gs/nextepc/commit/bc180c3ffc431a06a49e0de1af71098fd91d561b)]
+- Update document to correct typo ([#176](https://github.com/open5gs/nextepc/issues/176)) -- [iman432](https://github.com/iman432)
+- Add UE address to LOG ([#178](https://github.com/open5gs/nextepc/pull/178)) -- [medeiros405](https://github.com/medeiros405)
+
+#### Bug fixes
+- Fix CentOS compilation errors and segmentation fault in test programs ([#175](https://github.com/open5gs/nextepc/issues/175)) -- [fefer](https://github.com/fefer)
+- Modify the test program on MacOSX [ab81e38](https://github.com/open5gs/nextepc/commit/ab81e384879fdf51c667344fc8be912254dbec75)
+
+Download -- [v0.4.1.tar.gz](https://github.com/open5gs/nextepc/archive/v0.4.1.tar.gz)
+{: .notice--info}

docs/_sass/minima-reboot.scss

@@ -0,0 +1,6 @@
+@charset "utf-8";
+
+@import
+  "minima-reboot/layout",
+  "minima-reboot/syntax-highlighting"
+;

docs/_sass/minima-reboot/_layout.scss

@@ -0,0 +1,73 @@
+$layout-color-border: #e9ecef !default;
+$layout-color-background: #fdfdfd !default;
+$layout-color-syntax-highlighting-background: #f8f9fa !default;
+$layout-responsive-nav-cutoff: 768px !default;
+
+body {
+  background-color: $layout-color-background;
+}
+
+#nav-header {
+  border-top: 5px solid !important;
+  border-bottom: 1px solid $layout-color-border !important;
+}
+
+#nav-container {
+  height: 3.5rem;
+}
+
+#nav-menu-container {
+  @media (max-width: $layout-responsive-nav-cutoff - 1) {
+    position: absolute;
+    z-index: 100;
+    top: 0.4375rem;
+    right: 1rem;
+    border: 1px solid $layout-color-border;
+    border-radius: .25rem;
+    background-color: $layout-color-background;
+  }
+}
+
+#nav-trigger-label {
+  height: 1.5rem;
+  width: 1.5rem;
+  cursor: pointer;
+}
+
+#nav-trigger:checked ~ #nav-menu {
+  display: block !important;
+}
+
+#content {
+  h1, h2, h3, h4 {
+    margin-top: 2rem;
+    margin-bottom: 1rem;
+    text-align: left;
+  }
+  blockquote {
+    border-left: 4px solid $layout-color-border;
+    padding-left: 1rem;
+    font-style: italic
+  }
+  .footnotes {
+    text-align: left;
+  }
+  #rss-icon {
+    height: 1.5rem;
+    width: 1.5rem;
+    background-image: url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath fill='rgb(134, 142, 150)' d='M119.9,336.1c-30.8,0-55.9,25.1-55.9,55.8c0,30.8,25.1,55.6,55.9,55.6c30.9,0,55.9-24.9,55.9-55.6,C175.8,361.2,150.8,336.1,119.9,336.1z'/%3E%3Cpath fill='rgb(134, 142, 150)' d='M64,192v79.9c48,0,94.1,14.2,128,48.1c33.9,33.9,48,79.9,48,128h80C320,308.1,204,192,64,192z'/%3E%3Cpath fill='rgb(134, 142, 150)' d='M64,64v79.9c171,0,303.9,133,303.9,304.1H448C448,236.3,276,64,64,64z'/%3E%3C/svg%3E")
+  }
+}
+
+#site-footer {
+  border-top: 1px solid $layout-color-border;
+}
+
+.highlight pre {
+  border: 1px solid $layout-color-border;
+  border-radius: .25rem;
+  background-color: $layout-color-syntax-highlighting-background;
+  padding: 0.75rem;
+  margin-bottom: 1rem;
+  white-space: pre-wrap;
+}

docs/_sass/minima-reboot/_syntax-highlighting.scss

@@ -0,0 +1,61 @@
+.highlight {
+  .c     { color: #998; font-style: italic } // Comment
+  .err   { color: #a61717; background-color: #e3d2d2 } // Error
+  .k     { font-weight: bold } // Keyword
+  .o     { font-weight: bold } // Operator
+  .cm    { color: #998; font-style: italic } // Comment.Multiline
+  .cp    { color: #999; font-weight: bold } // Comment.Preproc
+  .c1    { color: #998; font-style: italic } // Comment.Single
+  .cs    { color: #999; font-weight: bold; font-style: italic } // Comment.Special
+  .gd    { color: #000; background-color: #fdd } // Generic.Deleted
+  .gd .x { color: #000; background-color: #faa } // Generic.Deleted.Specific
+  .ge    { font-style: italic } // Generic.Emph
+  .gr    { color: #a00 } // Generic.Error
+  .gh    { color: #999 } // Generic.Heading
+  .gi    { color: #000; background-color: #dfd } // Generic.Inserted
+  .gi .x { color: #000; background-color: #afa } // Generic.Inserted.Specific
+  .go    { color: #888 } // Generic.Output
+  .gp    { color: #555 } // Generic.Prompt
+  .gs    { font-weight: bold } // Generic.Strong
+  .gu    { color: #aaa } // Generic.Subheading
+  .gt    { color: #a00 } // Generic.Traceback
+  .kc    { font-weight: bold } // Keyword.Constant
+  .kd    { font-weight: bold } // Keyword.Declaration
+  .kp    { font-weight: bold } // Keyword.Pseudo
+  .kr    { font-weight: bold } // Keyword.Reserved
+  .kt    { color: #458; font-weight: bold } // Keyword.Type
+  .m     { color: #099 } // Literal.Number
+  .s     { color: #d14 } // Literal.String
+  .na    { color: #008080 } // Name.Attribute
+  .nb    { color: #0086B3 } // Name.Builtin
+  .nc    { color: #458; font-weight: bold } // Name.Class
+  .no    { color: #008080 } // Name.Constant
+  .ni    { color: #800080 } // Name.Entity
+  .ne    { color: #900; font-weight: bold } // Name.Exception
+  .nf    { color: #900; font-weight: bold } // Name.Function
+  .nn    { color: #555 } // Name.Namespace
+  .nt    { color: #000080 } // Name.Tag
+  .nv    { color: #008080 } // Name.Variable
+  .ow    { font-weight: bold } // Operator.Word
+  .w     { color: #bbb } // Text.Whitespace
+  .mf    { color: #099 } // Literal.Number.Float
+  .mh    { color: #099 } // Literal.Number.Hex
+  .mi    { color: #099 } // Literal.Number.Integer
+  .mo    { color: #099 } // Literal.Number.Oct
+  .sb    { color: #d14 } // Literal.String.Backtick
+  .sc    { color: #d14 } // Literal.String.Char
+  .sd    { color: #d14 } // Literal.String.Doc
+  .s2    { color: #d14 } // Literal.String.Double
+  .se    { color: #d14 } // Literal.String.Escape
+  .sh    { color: #d14 } // Literal.String.Heredoc
+  .si    { color: #d14 } // Literal.String.Interpol
+  .sx    { color: #d14 } // Literal.String.Other
+  .sr    { color: #009926 } // Literal.String.Regex
+  .s1    { color: #d14 } // Literal.String.Single
+  .ss    { color: #990073 } // Literal.String.Symbol
+  .bp    { color: #999 } // Name.Builtin.Pseudo
+  .vc    { color: #008080 } // Name.Variable.Class
+  .vg    { color: #008080 } // Name.Variable.Global
+  .vi    { color: #008080 } // Name.Variable.Instance
+  .il    { color: #099 } // Literal.Number.Integer.Long
+}

docs/_sass/minimal-mistakes.scss

@@ -0,0 +1,11 @@
+/*!
+ * Minimal Mistakes Jekyll Theme 4.15.2 by Michael Rose
+ * Copyright 2013-2019 Michael Rose - mademistakes.com | @mmistakes
+ * Licensed under MIT (https://github.com/mmistakes/minimal-mistakes/blob/master/LICENSE)
+*/
+
+/* Variables */
+@import "minimal-mistakes/variables";
+
+/* Components */
+@import "minimal-mistakes/notices";

docs/_sass/minimal-mistakes/_notices.scss

@@ -0,0 +1,100 @@
+/* ==========================================================================
+   NOTICE TEXT BLOCKS
+   ========================================================================== */
+
+/**
+ *  Default Kramdown usage (no indents!):
+ *  <div class="notice" markdown="1">
+ *  #### Headline for the Notice
+ *  Text for the notice
+ *  </div>
+ */
+
+@mixin notice($notice-color) {
+  margin: 1em 0 !important;  /* override*/
+  padding: 1em;
+  color: $dark-gray;
+  font-family: $global-font-family;
+  font-size: $type-size-6 !important;
+  text-indent: initial; /* override*/
+  background-color: mix(#fff, $notice-color, 90%);
+  border-radius: $border-radius;
+  box-shadow: 0 1px 1px rgba($notice-color, 0.25);
+
+  h4 {
+    margin-top: 0 !important; /* override*/
+    margin-bottom: 0.75em;
+  }
+
+  @at-root .page__content #{&} h4 {
+    /* using at-root to override .page-content h4 font size*/
+    margin-bottom: 0;
+    font-size: 1em;
+  }
+
+  p {
+    &:last-child {
+      margin-bottom: 0 !important; /* override*/
+    }
+  }
+
+  h4 + p {
+    /* remove space above paragraphs that appear directly after notice headline*/
+    margin-top: 0;
+    padding-top: 0;
+  }
+
+  a {
+    color: $notice-color;
+
+    &:hover {
+      color: mix(#000, $notice-color, 40%);
+    }
+  }
+
+  code {
+    background-color: mix(#fff, $notice-color, 95%)
+  }
+
+  ul {
+    &:last-child {
+      margin-bottom: 0; /* override*/
+    }
+  }
+}
+
+/* Default notice */
+
+.notice {
+  @include notice($light-gray);
+}
+
+/* Primary notice */
+
+.notice--primary {
+  @include notice($primary-color);
+}
+
+/* Info notice */
+
+.notice--info {
+  @include notice($info-color);
+}
+
+/* Warning notice */
+
+.notice--warning {
+  @include notice($warning-color);
+}
+
+/* Success notice */
+
+.notice--success {
+  @include notice($success-color);
+}
+
+/* Danger notice */
+
+.notice--danger {
+  @include notice($danger-color);
+}

docs/_sass/minimal-mistakes/_variables.scss

@@ -0,0 +1,159 @@
+/* ==========================================================================
+   Variables
+   ========================================================================== */
+
+/*
+   Typography
+   ========================================================================== */
+
+$doc-font-size: 16 !default;
+
+/* paragraph indention */
+$paragraph-indent: false !default; // true, false (default)
+$indent-var: 1.3em !default;
+
+/* system typefaces */
+$serif: Georgia, Times, serif !default;
+$sans-serif: -apple-system, BlinkMacSystemFont, "Roboto", "Segoe UI",
+  "Helvetica Neue", "Lucida Grande", Arial, sans-serif !default;
+$monospace: Monaco, Consolas, "Lucida Console", monospace !default;
+
+/* sans serif typefaces */
+$sans-serif-narrow: $sans-serif !default;
+$helvetica: Helvetica, "Helvetica Neue", Arial, sans-serif !default;
+
+/* serif typefaces */
+$georgia: Georgia, serif !default;
+$times: Times, serif !default;
+$bodoni: "Bodoni MT", serif !default;
+$calisto: "Calisto MT", serif !default;
+$garamond: Garamond, serif !default;
+
+$global-font-family: $sans-serif !default;
+$header-font-family: $sans-serif !default;
+$caption-font-family: $serif !default;
+
+/* type scale */
+$type-size-1: 2.441em !default; // ~39.056px
+$type-size-2: 1.953em !default; // ~31.248px
+$type-size-3: 1.563em !default; // ~25.008px
+$type-size-4: 1.25em !default; // ~20px
+$type-size-5: 1em !default; // ~16px
+$type-size-6: 0.9em !default; // ~12px
+$type-size-7: 0.6875em !default; // ~11px
+$type-size-8: 0.625em !default; // ~10px
+
+/*
+   Colors
+   ========================================================================== */
+
+$gray: #7a8288 !default;
+$dark-gray: mix(#000, $gray, 40%) !default;
+$darker-gray: mix(#000, $gray, 60%) !default;
+$light-gray: mix(#fff, $gray, 50%) !default;
+$lighter-gray: mix(#fff, $gray, 90%) !default;
+
+$background-color: #fff !default;
+$code-background-color: #fafafa !default;
+$code-background-color-dark: $light-gray !default;
+$text-color: $dark-gray !default;
+$muted-text-color: mix(#fff, $text-color, 35%) !default;
+$border-color: $lighter-gray !default;
+$form-background-color: $lighter-gray !default;
+$footer-background-color: $lighter-gray !default;
+
+$primary-color: #6f777d !default;
+$success-color: #3fa63f !default;
+$warning-color: #d67f05 !default;
+$danger-color: #ee5f5b !default;
+$info-color: #3b9cba !default;
+$focus-color: $primary-color !default;
+$active-color: mix(#fff, $primary-color, 80%) !default;
+
+/* YIQ color contrast */
+$yiq-contrasted-dark-default: $dark-gray !default;
+$yiq-contrasted-light-default: #fff !default;
+$yiq-contrasted-threshold: 175 !default;
+$yiq-debug: false !default;
+
+/* brands */
+$behance-color: #1769ff !default;
+$bitbucket-color: #205081 !default;
+$dribbble-color: #ea4c89 !default;
+$facebook-color: #3b5998 !default;
+$flickr-color: #ff0084 !default;
+$foursquare-color: #0072b1 !default;
+$github-color: #171516 !default;
+$gitlab-color: #e24329 !default;
+$instagram-color: #517fa4 !default;
+$lastfm-color: #d51007 !default;
+$linkedin-color: #007bb6 !default;
+$mastodon-color: #2b90d9 !default;
+$pinterest-color: #cb2027 !default;
+$reddit-color: #ff4500 !default;
+$rss-color: #fa9b39 !default;
+$soundcloud-color: #ff3300 !default;
+$stackoverflow-color: #fe7a15 !default;
+$tumblr-color: #32506d !default;
+$twitter-color: #55acee !default;
+$vimeo-color: #1ab7ea !default;
+$vine-color: #00bf8f !default;
+$youtube-color: #bb0000 !default;
+$xing-color: #006567 !default;
+
+/* links */
+$link-color: mix(#000, $info-color, 15%) !default;
+$link-color-hover: mix(#000, $link-color, 25%) !default;
+$link-color-visited: mix(#fff, $link-color, 15%) !default;
+$masthead-link-color: $primary-color !default;
+$masthead-link-color-hover: mix(#000, $primary-color, 25%) !default;
+$navicon-link-color-hover: mix(#fff, $primary-color, 75%) !default;
+
+/* syntax highlighting (base16) */
+$base00: #263238 !default;
+$base01: #2e3c43 !default;
+$base02: #314549 !default;
+$base03: #546e7a !default;
+$base04: #b2ccd6 !default;
+$base05: #eeffff !default;
+$base06: #eeffff !default;
+$base07: #ffffff !default;
+$base08: #f07178 !default;
+$base09: #f78c6c !default;
+$base0a: #ffcb6b !default;
+$base0b: #c3e88d !default;
+$base0c: #89ddff !default;
+$base0d: #82aaff !default;
+$base0e: #c792ea !default;
+$base0f: #ff5370 !default;
+
+/*
+   Breakpoints
+   ========================================================================== */
+
+$small: 600px !default;
+$medium: 768px !default;
+$medium-wide: 900px !default;
+$large: 1024px !default;
+$x-large: 1280px !default;
+
+/*
+   Grid
+   ========================================================================== */
+
+$right-sidebar-width-narrow: 200px !default;
+$right-sidebar-width: 300px !default;
+$right-sidebar-width-wide: 400px !default;
+
+/*
+   Other
+   ========================================================================== */
+
+$border-radius: 4px !default;
+$box-shadow: 0 1px 1px rgba(0, 0, 0, 0.125) !default;
+$nav-height: 2em !default;
+$nav-toggle-height: 2rem !default;
+$navicon-width: 1.5rem !default;
+$navicon-height: 0.25rem !default;
+$global-transition: all 0.2s ease-in-out !default;
+$intro-transition: intro 0.3s both !default;

docs/assets/css/main.scss

@@ -0,0 +1,5 @@
+---
+---
+
+@import "minima-reboot";
+@import "minimal-mistakes";