Removing the duality of codecs[] and ptmap[] in structs mgcp_msg,
mgcp_response and mgcp_conn_peer has removed the need to "map" from
codec type enum to payload type number. They are stored together now.
Remove functions that are no longer used.
None of our osmocom users of libosmo-mgcp-client call these functions.
Change-Id: I84e5285831397c992af59deee12dea8458d16cc6
Existing mgcp_client_test code required the '.' to trigger the same code
path, since with this commit we do extra checks and without a dot the
address is not accepted as IPv4 by osmo_ip_str_type().
Change-Id: I936bf57d37f5f0607dfe7fc66c37e424c3793f9b
mgcp_client.h offers functions to generate endpoint names for wildcarded
request. This is used in osmo-bsc, lets now also add a function that can
generate e1-endpoint names.
Change-Id: Iec35b5bae8a7b07ddb3559f7114a24dcd10e8f14
Related: OS#2547
Remove public API that makes no sense anymore and is dead code.
I see the dropped API as a dead-end initial misconception of the early mgcp
client, and it doesn't really make sense to drag this stuff along. It has not
been used by osmo-msc,-bsc for a long time now, and just confuses the reader.
It is public API, yes, and older versions of osmo-msc / osmo-bsc will not be
able to compile against this, but even if it did, the resulting MGCP client
would not work with the current osmo-mgw: this API is still based on the
premise that the MGCP client dictates the MGW endpoint numbers, a concept that
cannot be used with the current osmo-mgw. Instead, osmo-mgw expects a
wildcarded endpoint upon CRCX and assigns its own endpoint names.
Also, the bts-base configuration is unused and a legacy of when osmo-bsc_mgcp
had explicit BTS and CN sides.
Change-Id: I98a9f1f17a1c4ab20cea3b08c7d21663592134d6
Instead of just silently truncating the conn ID if it is too long, rather
verify its length and return an error where applicable.
Adjust expected test output.
Change-Id: If2a1aab1f13e771a6705c430e3c75bd42477a23b
Add a full length (32 characters according to spec) conn ID in a CRCX response,
as well as a too long one.
The too long one is currently silently truncated, a subsequent patch will
improve on that (If2a1aab1f13e771a6705c430e3c75bd42477a23b).
Change-Id: I5f2d52f086ea2d330fcce88a176488ace972bf79
The separator between MGCP and SDP section is typically "\r\n\r\n". For some
reason the test so far used "\n\n" instead, rather use the standard separator.
Change-Id: I41c73722e5fae00663bcf96de0b57b7155809a06
The format is
CRCX ...
C: ...
M: ...
X-Osmo-IGN: C
So far the only ignorable element is C, i.e. the CallID. Any other items may be
added in the future.
(I initially intended to also add '@' to ignore the endpoint name's domain
part, but in the osmo-mgw code base the domain part is verified long before any
additional headers are even parsed, so sparing that refactoring for now.)
The intention is that osmo-bsc will issue "X-Osmo-IGN: C" for all SCCPlite
calls, because we are unable to retrieve the CallID that the MSC sends to
osmo-mgw for the network side of the endpoint.
Testing with a specific SCCPlite MSC, I actually observe that all CallIDs are
1, even for concurrent calls. So, an alternative hacky solution would have been
to always pass CallID == 1 for SCCPlite connections from osmo-bsc.
Related: I257ad574d8060fef19afce9798bd8a5a7f8c99fe (osmo-bsc)
Change-Id: Id7ae275ffde8ea9389270cfe3db087ee8db00b51
The current implementation does not support any way to influence the
codec that is negotiated via SDP or LCO. The client statically
negotitates AMR on an invalid payload type number. Also we ignore
any codec information in the responses.
- Add struct members to allow setting of user defined codec information.
- Add struct members to retrieve parsed codec info from responses.
- Add code to generate codec information in SDP
- Add code to parse SDP codec info in MGCP responses
Change-Id: I78e72d41b73acfcb40599a0ff4823f17c3642059
Related: OS#2728
Related: OS#3334
To show how the current code fails, add test_sdp_section_start() to
mgcp_client_test.c, and temporarily accept failing output. This will be fixed
in change I62a2453cd9e2e7d5408423161fa65ec9c9989f98.
Change-Id: I5c6d3566b8f6dbf04c0cd8b127423f5295c19f8d
The parameter ordering of the client responses does not match the
ordering as proposed by by RFC2327, Chapter 6. SDP Specification
- reorder generated SDP parameters so that they match RFC2327
Change-Id: I63cac2ebc982ffead92703c22bf68c7aafa7936c
The mcgp message generator function mgcp_msg_gen() lacks support
for the mandatory SDP fields (v)ersion, (o)rigin, (s)ession and
(t)ime.
- Automatically generate the missing fields when SDP is
generated.
Change-Id: I5fbc31a17e8ac10c7cc5dbc31357b61e8920aaa5
Related: OS#2837
So far, if an MGCP message is sent, the transaction gets enqueued, but there is
no way to end the transaction other than receiving a valid reply. So, if the
caller decides that the transaction timed out and tears down the priv pointer
passed to mgcp_client_tx, and if then a late reply arrives, the callback will
dereference the invalid priv pointer and cause a segfault. Hence it is possible
to crash an mgcp_client program by sending a late response.
Furthermore, if no reply ever arrives, we would keep the pending response in
the list forever, amounting to a "memory leak".
Add mgcp_client_cancel() to discard a pending transaction. The caller can now
decide to discard a pending response when it sees fit (e.g. the caller's
timeout expired). This needs to be added to OsmoMSC and OsmoBSC.
Add mgcp_msg_trans_id() to provide an obvious way to obtain the transaction id
from a generated MGCP message.
No public API is broken; but refine the negative return code from
mgcp_client_rx(): return -ENOENT if no such transaction ID is found, and still
-1 if decoding failed. This is mainly for mgcp_client_test.
Implement a test for mgcp_client_cancel() in mgcp_client_test.c.
Tweak internal mgcp_client_response_pending_get() to take only the transaction
id as argument instead of the entire mgcp message struct.
Found-by: dexter
Related: OS#2695 OS#2696
Change-Id: I16811e168a46a82a05943252a737b3434143f4bd
currently the only way to generate MGCP messages is to use
mgcp_msg_crcx(), mgcp_msg_mdcx() and mgcp_msg_dlcx(). All
three function take a fixed set of parameters via their
parameter list. There is no way to add or leave away optional
parameters.
add function mgcp_msg_gen(), this function takes a unified
message struct. The struct features a presence bitmask which
allows to enable and disable parameters as needed. It is also
possible to add new parameters in the future without breaking
the API.
Depends: libosmocore I15e1af68616309555d0ed9ac5da027c9833d42e3
Change-Id: I29c5e2fb972896faeb771ba040f015592487fcbe
The name "mgcpgw_client" referred to an MGCP gateway, which is rather an MGW
(Media Gateway). But this client code is more generally a client for the MGCP
protocol, independently from what the server program is called.
Rename the files as well as the function prefixes to drop the "gw". It is
purely cosmetic and not strictly necessary, but a good point in time for fixes
like this.
osmo-msc build will be adjusted by I093ad02ca0e532f659447c785e09678b3e6f220d.
osmo-bsc build will be adjusted by I6402c7cbe58dacae7630f7f03819f8102e54c699.
These should be applied right after this here is merged to avoid fallout.
Change-Id: I99f7faab637cfcc22ece64a1dbcbe590f2042187
