v0.11.16

contrib/nginx/copyparty.conf

@@ -1,3 +1,8 @@
+# when running copyparty behind a reverse-proxy,
+# make sure that copyparty allows at least as many clients as the proxy does,
+# so run copyparty with -nc 512 if your nginx has the default limits
+# (worker_processes 1, worker_connections 512)
+
 upstream cpp {
 	server 127.0.0.1:3923;
 	keepalive 120;

copyparty/__version__.py

@@ -1,8 +1,8 @@
 # coding: utf-8
 
-VERSION = (0, 11, 14)
+VERSION = (0, 11, 16)
 CODENAME = "the grid"
-BUILD_DT = (2021, 6, 14)
+BUILD_DT = (2021, 6, 16)
 
 S_VERSION = ".".join(map(str, VERSION))
 S_BUILD_DT = "{0:04d}-{1:02d}-{2:02d}".format(*BUILD_DT)

copyparty/web/browser.css

@@ -497,6 +497,27 @@ input[type="checkbox"]+label {
 input[type="checkbox"]:checked+label {
 	color: #fc5;
 }
+input.eq_gain {
+	width: 3em;
+	text-align: center;
+	margin: 0 .6em;
+}
+#audio_eq table {
+	border-collapse: collapse;
+}
+#audio_eq td {
+	text-align: center;
+}
+#audio_eq a.eq_step {
+	font-size: 1.5em;
+	display: block;
+	padding: 0;
+}
+#au_eq {
+	display: block;
+	margin-top: .5em;
+	padding: 1.3em .3em;
+}
 
 
 
@@ -563,6 +584,7 @@ input[type="checkbox"]:checked+label {
 }
 #wrap {
 	margin-top: 2em;
+	min-height: 90vh;
 }
 #tree {
 	display: none;
@@ -575,6 +597,12 @@ input[type="checkbox"]:checked+label {
 	overscroll-behavior-y: none;
 	scrollbar-color: #eb0 #333;
 }
+#treeh {
+	background: #333;
+	position: sticky;
+	z-index: 1;
+	top: 0;
+}
 #thx_ff {
 	padding: 5em 0;
 }
@@ -600,6 +628,7 @@ input[type="checkbox"]:checked+label {
 	box-shadow: 0 .1em .2em #222 inset;
 	border-radius: .3em;
 	margin: .2em;
+	white-space: pre;
 	position: relative;
 	top: -.2em;
 }
@@ -667,34 +696,20 @@ input[type="checkbox"]:checked+label {
 	font-size: 2em;
 	white-space: nowrap;
 }
-#files th:hover .cfg,
+#files th:hover .cfg {
-#files th.min .cfg {
 	display: block;
 	width: 1em;
 	border-radius: .2em;
 	margin: -1.3em auto 0 auto;
 	background: #444;
 }
-#files th.min .cfg {
+#files>thead>tr>th.min,
-	margin: -.6em;
+#files td.min {
-}
+		display: none;
-#files>thead>tr>th.min span {
-	position: absolute;
-	transform: rotate(270deg);
-	background: linear-gradient(90deg, rgba(68,68,68,0), rgba(68,68,68,0.5) 70%, #444);
-	margin-left: -4.6em;
-	padding: .4em;
-	top: 5.4em;
-	width: 8em;
-	text-align: right;
-	letter-spacing: .04em;
 }
 #files td:nth-child(2n) {
 	color: #f5a;
 }
-#files td.min a {
-	display: none;
-}
 #files tr.play td,
 #files tr.play div a {
 	background: #fc4;
@@ -709,18 +724,18 @@ input[type="checkbox"]:checked+label {
 	color: #300;
 	background: #fea;
 }
-#op_cfg {
+.opwide {
 	max-width: none;
 	margin-right: 1.5em;
 }
-#op_cfg>div>a {
+.opwide>div>a {
 	line-height: 2em;
 }
 #op_cfg>div>span {
 	display: inline-block;
 	padding: .2em .4em;
 }
-#op_cfg h3 {
+.opbox h3 {
 	margin: .8em 0 0 .6em;
 	padding: 0;
 	border-bottom: 1px solid #555;
@@ -944,13 +959,9 @@ html.light tr.play td {
 html.light tr.play a {
 	color: #406;
 }
-html.light #files th:hover .cfg,
+html.light #files th:hover .cfg {
-html.light #files th.min .cfg {
 	background: #ccc;
 }
-html.light #files > thead > tr > th.min span {
-	background: linear-gradient(90deg, rgba(204,204,204,0), rgba(204,204,204,0.5) 70%, #ccc);
-}
 html.light #blocked {
 	background: #eee;
 }
@@ -1021,6 +1032,9 @@ html.light #files tr.sel a:hover {
 	color: #000;
 	background: #fff;
 }
+html.light #treeh {
+	background: #eee;
+}
 html.light #tree {
 	scrollbar-color: #a70 #ddd;
 }

copyparty/web/browser.html

@@ -26,6 +26,7 @@
         <a href="#" data-perm="write" data-dest="mkdir" data-desc="mkdir: create a new directory">📂</a>
         <a href="#" data-perm="read write" data-dest="new_md" data-desc="new-md: create a new markdown document">📝</a>
         <a href="#" data-perm="write" data-dest="msg" data-desc="msg: send a message to the server log">📟</a>
+        <a href="#" data-dest="player" data-desc="media player options">🎺</a>
         <a href="#" data-dest="cfg" data-desc="configuration options">⚙️</a>
         <div id="opdesc"></div>
     </div>
@@ -39,22 +40,23 @@
         <div id="srch_q"></div>
     </div>
 
+    <div id="op_player" class="opview opbox opwide"></div>
+
     {%- include 'upload.html' %}
 
-    <div id="op_cfg" class="opview opbox">
+    <div id="op_cfg" class="opview opbox opwide">
         <h3>switches</h3>
         <div>
-            <a id="tooltips" class="tgl btn" href="#">tooltips</a>
+            <a id="tooltips" class="tgl btn" href="#">ℹ️ tooltips</a>
-            <a id="lightmode" class="tgl btn" href="#">lightmode</a>
+            <a id="lightmode" class="tgl btn" href="#">☀️ lightmode</a>
-            <a id="griden" class="tgl btn" href="#">the grid</a>
+            <a id="griden" class="tgl btn" href="#">田 the grid</a>
-            <a id="thumbs" class="tgl btn" href="#">thumbs</a>
+            <a id="thumbs" class="tgl btn" href="#">🖼️ thumbs</a>
         </div>
         {%- if have_zip %}
-        <h3>folder download</h3>
+        <h3>folder download</h3><div id="arc_fmt"></div>
-        <div id="arc_fmt"></div>
         {%- endif %}
-        <h3>key notation</h3>
+        <h3>key notation</h3><div id="key_notation"></div>
-        <div id="key_notation"></div>
+        <h3>hidden columns</h3><div id="hcols"></div>
     </div>
     
     <h1 id="path">
@@ -65,10 +67,12 @@
     </h1>
     
     <div id="tree">
+        <div id="treeh">
             <a href="#" id="detree">🍞...</a>
             <a href="#" class="btn" step="2" id="twobytwo">+</a>
             <a href="#" class="btn" step="-2" id="twig">&ndash;</a>
             <a href="#" class="tgl btn" id="dyntree">a</a>
+        </div>
         <ul id="treeul"></ul>
         <div id="thx_ff">&nbsp;</div>
     </div>

copyparty/web/browser.js

@@ -42,6 +42,39 @@ var have_webp = null;
 })();
 
 
+var mpl = (function () {
+	ebi('op_player').innerHTML = (
+		'<h3>audio equalizer</h3><div id="audio_eq"></div>' +
+
+		'<h3>playback mode</h3><div id="pb_mode">' +
+		'<a href="#" class="tgl btn">🔁 loop-folder</a>' +
+		'<a href="#" class="tgl btn">📂 next-folder</a>' +
+		'</div>');
+
+	var r = {
+		"pb_mode": sread('pb_mode') || 'loop-folder'
+	};
+
+	function draw_pb_mode() {
+		var btns = QSA('#pb_mode>a');
+		for (var a = 0, aa = btns.length; a < aa; a++) {
+			clmod(btns[a], 'on', btns[a].textContent.indexOf(r.pb_mode) != -1);
+			btns[a].onclick = set_pb_mode;
+		}
+	}
+	draw_pb_mode();
+
+	function set_pb_mode(e) {
+		ev(e);
+		r.pb_mode = this.textContent.split(' ').slice(-1)[0];
+		swrite('pb_mode', r.pb_mode);
+		draw_pb_mode();
+	}
+
+	return r;
+})();
+
+
 // extract songs + add play column
 function MPlayer() {
 	this.id = Date.now();
@@ -162,8 +195,9 @@ var widget = (function () {
 			m = ck + 'np: ';
 
 		for (var a = 1, aa = th.length; a < aa; a++) {
-			var tk = a == 1 ? '' : th[a].getAttribute('name').split('/').slice(-1)[0];
+			var tv = tr[a].textContent,
-			var tv = tr[a].getAttribute('html') || tr[a].textContent;
+				tk = a == 1 ? '' : th[a].getAttribute('name').split('/').slice(-1)[0];
+
 			m += tk + '(' + cv + tv + ck + ') // ';
 		}
 
@@ -407,7 +441,7 @@ function song_skip(n) {
 	if (tid !== null)
 		play(mp.order.indexOf(tid) + n);
 	else
-		play(mp.order[0]);
+		play(mp.order[n == -1 ? mp.order.length - 1 : 0]);
 }
 
 
@@ -508,6 +542,194 @@ try {
 catch (ex) { }
 
 
+var audio_eq = (function () {
+	var r = {
+		"en": false,
+		"bands": [31.25, 62.5, 125, 250, 500, 1000, 2000, 4000, 8000, 16000],
+		"gains": [4, 3, 2, 1, 0, 0, 1, 2, 3, 4],
+		"filters": [],
+		"last_au": null
+	};
+
+	var cfg = [ // hz, q, g
+		[31.25 * 0.88, 0, 1.4],  // shelf
+		[31.25 * 1.04, 0.7, 0.96],  // peak
+		[62.5, 0.7, 1],
+		[125, 0.8, 1],
+		[250, 0.9, 1.03],
+		[500, 0.9, 1.1],
+		[1000, 0.9, 1.1],
+		[2000, 0.9, 1.105],
+		[4000, 0.88, 1.05],
+		[8000 * 1.006, 0.73, 1.24],
+		[16000 * 0.89, 0.7, 1.26],  // peak
+		[16000 * 1.13, 0.82, 1.09],  // peak
+		[16000 * 1.205, 0, 1.9]  // shelf
+	];
+
+	try {
+		var gains = jread('au_eq_gain', r.gains);
+		if (r.gains.length == gains.length)
+			r.gains = gains;
+	}
+	catch (ex) { }
+
+	r.draw = function () {
+		jwrite('au_eq_gain', r.gains);
+
+		var txt = QSA('input.eq_gain');
+		for (var a = 0; a < r.bands.length; a++)
+			txt[a].value = r.gains[a];
+	};
+
+	r.apply = function () {
+		r.draw();
+
+		var Ctx = window.AudioContext || window.webkitAudioContext;
+		if (!Ctx)
+			bcfg_set('au_eq', false);
+
+		if (!Ctx || !mp.au)
+			return;
+
+		if (!r.en && !mp.ac)
+			return;
+
+		if (mp.ac) {
+			for (var a = 0; a < r.filters.length; a++)
+				r.filters[a].disconnect();
+
+			mp.acs.disconnect();
+		}
+
+		if (!mp.ac || mp.au != r.last_au) {
+			if (mp.ac)
+				mp.ac.close();
+
+			r.last_au = mp.au;
+			mp.ac = new Ctx();
+			mp.acs = mp.ac.createMediaElementSource(mp.au);
+		}
+
+		r.filters = [];
+
+		if (!r.en) {
+			mp.acs.connect(mp.ac.destination);
+			return;
+		}
+
+		var max = 0;
+		for (var a = 0; a < r.gains.length; a++)
+			if (max < r.gains[a])
+				max = r.gains[a];
+
+		var gains = []
+		for (var a = 0; a < r.gains.length; a++)
+			gains.push(r.gains[a] - max);
+
+		var t = gains[gains.length - 1];
+		gains.push(t);
+		gains.push(t);
+		gains.unshift(gains[0]);
+
+		for (var a = 0; a < cfg.length; a++) {
+			var fi = mp.ac.createBiquadFilter();
+			fi.frequency.value = cfg[a][0];
+			fi.gain.value = cfg[a][2] * gains[a];
+			fi.Q.value = cfg[a][1];
+			fi.type = a == 0 ? 'lowshelf' : a == cfg.length - 1 ? 'highshelf' : 'peaking';
+			r.filters.push(fi);
+		}
+		for (var a = r.filters.length - 1; a >= 0; a--) {
+			r.filters[a].connect(a > 0 ? r.filters[a - 1] : mp.ac.destination);
+		}
+		fi = mp.ac.createGain();
+		fi.gain.value = '0.94';  // +.137 dB measured; now -.25 dB and almost bitperfect
+		mp.acs.connect(fi);
+		fi.connect(r.filters[r.filters.length - 1]);
+		r.filters.push(fi);
+	}
+
+	function eq_step(e) {
+		ev(e);
+		var band = parseInt(this.getAttribute('band')),
+			step = parseFloat(this.getAttribute('step'));
+
+		r.gains[band] += step;
+		r.apply();
+	}
+
+	function adj_band(that, step) {
+		try {
+			var band = parseInt(that.getAttribute('band')),
+				v = parseFloat(that.value);
+
+			if (isNaN(v))
+				throw 42;
+
+			r.gains[band] = v + step;
+		}
+		catch (ex) {
+			return;
+		}
+		r.apply();
+	}
+
+	function eq_mod(e) {
+		ev(e);
+		adj_band(this, 0);
+	}
+
+	function eq_keydown(e) {
+		var step = e.key == 'ArrowUp' ? 0.25 : e.key == 'ArrowDown' ? -0.25 : 0;
+		if (step != 0)
+			adj_band(this, step);
+	}
+
+	var html = ['<table><tr><td rowspan="4">',
+		'<a id="au_eq" class="tgl btn" href="#">enable</a></td>'],
+		h2 = [], h3 = [], h4 = [];
+
+	for (var a = 0; a < r.bands.length; a++) {
+		var hz = r.bands[a];
+		if (hz >= 1000)
+			hz = (hz / 1000) + 'k';
+
+		hz = (hz + '').split('.')[0];
+		html.push('<td><a href="#" class="eq_step" step="0.5" band="' + a + '">+</a></td>');
+		h2.push('<td>' + hz + '</td>');
+		h4.push('<td><a href="#" class="eq_step" step="-0.5" band="' + a + '">&ndash;</a></td>');
+		h3.push('<td><input type="text" class="eq_gain" band="' + a + '" value="' + r.gains[a] + '" /></td>');
+	}
+	html = html.join('\n') + '</tr><tr>';
+	html += h2.join('\n') + '</tr><tr>';
+	html += h3.join('\n') + '</tr><tr>';
+	html += h4.join('\n') + '</tr><table>';
+	ebi('audio_eq').innerHTML = html;
+
+	var stp = QSA('a.eq_step');
+	for (var a = 0, aa = stp.length; a < aa; a++)
+		stp[a].onclick = eq_step;
+
+	var txt = QSA('input.eq_gain');
+	for (var a = 0; a < r.gains.length; a++) {
+		txt[a].oninput = eq_mod;
+		txt[a].onkeydown = eq_keydown;
+	}
+
+	r.en = bcfg_get('au_eq', false);
+	ebi('au_eq').onclick = function (e) {
+		ev(e);
+		r.en = !r.en;
+		bcfg_set('au_eq', r.en);
+		r.apply();
+	};
+
+	r.draw();
+	return r;
+})();
+
+
 // plays the tid'th audio file on the page
 function play(tid, seek, call_depth) {
 	if (mp.order.length == 0)
@@ -517,11 +739,25 @@ function play(tid, seek, call_depth) {
 	if ((tn + '').indexOf('f-') === 0)
 		tn = mp.order.indexOf(tn);
 
-	while (tn >= mp.order.length)
+	if (tn >= mp.order.length) {
-		tn -= mp.order.length;
+		if (mpl.pb_mode == 'loop-folder') {
+			tn = 0;
+		}
+		else if (mpl.pb_mode == 'next-folder') {
+			treectl.ls_cb = function () { song_skip(1); };
+			return tree_neigh(1);
+		}
+	}
 
-	while (tn < 0)
+	if (tn < 0) {
-		tn += mp.order.length;
+		if (mpl.pb_mode == 'loop-folder') {
+			tn = mp.order.length - 1;
+		}
+		else if (mpl.pb_mode == 'next-folder') {
+			treectl.ls_cb = function () { song_skip(-1); };
+			return tree_neigh(-1);
+		}
+	}
 
 	tid = mp.order[tn];
 
@@ -568,6 +804,8 @@ function play(tid, seek, call_depth) {
 		mp.au = mp.au_native;
 	}
 
+	audio_eq.apply();
+
 	mp.au.tid = tid;
 	mp.au.src = url;
 	mp.au.volume = mp.expvol();
@@ -1276,7 +1514,8 @@ document.onkeydown = function (e) {
 
 var treectl = (function () {
 	var treectl = {
-		"hidden": false
+		"hidden": false,
+		"ls_cb": null
 	},
 		entreed = false,
 		fixedpos = false,
@@ -1376,6 +1615,11 @@ var treectl = (function () {
 		onscroll();
 	}
 
+	treectl.goto = function (url, push) {
+		get_tree("", url, true);
+		reqls(url, push);
+	}
+
 	function get_tree(top, dst, rst) {
 		var xhr = new XMLHttpRequest();
 		xhr.top = top;
@@ -1570,6 +1814,12 @@ var treectl = (function () {
 		msel.render();
 		reload_tree();
 		reload_browser();
+
+		var fun = treectl.ls_cb;
+		if (fun) {
+			treectl.ls_cb = null;
+			fun();
+		}
 	}
 
 	function parsetree(res, top) {
@@ -1634,9 +1884,7 @@ var treectl = (function () {
 			return;
 
 		var url = new URL(e.state, "https://" + document.location.host);
-		url = url.pathname;
+		treectl.goto(url.pathname);
-		get_tree("", url, true);
-		reqls(url);
 	};
 
 	if (window.history && history.pushState) {
@@ -1761,17 +2009,34 @@ var filecols = (function () {
 	var add_btns = function () {
 		var ths = QSA('#files th>span');
 		for (var a = 0, aa = ths.length; a < aa; a++) {
-			var th = ths[a].parentElement,
+			var th = ths[a].parentElement;
-				is_hidden = has(hidden, ths[a].textContent);
+			th.innerHTML = '<div class="cfg"><a href="#">-</a></div>' + ths[a].outerHTML;
-
-			th.innerHTML = '<div class="cfg"><a href="#">' +
-				(is_hidden ? '+' : '-') + '</a></div>' + ths[a].outerHTML;
-
 			th.getElementsByTagName('a')[0].onclick = ev_row_tgl;
 		}
 	};
 
+	function hcols_click(e) {
+		ev(e);
+		var t = e.target;
+		if (t.tagName != 'A')
+			return;
+
+		toggle(t.textContent);
+	}
+
 	var set_style = function () {
+		hidden.sort();
+
+		var html = [],
+			hcols = ebi('hcols');
+
+		for (var a = 0; a < hidden.length; a++) {
+			html.push('<a href="#" class="btn">' + esc(hidden[a]) + '</a>');
+		}
+		hcols.previousSibling.style.display = html.length ? 'block' : 'none';
+		hcols.innerHTML = html.join('\n');
+		hcols.onclick = hcols_click;
+
 		add_btns();
 
 		var ohidden = [],
@@ -1796,22 +2061,8 @@ var filecols = (function () {
 			var cls = has(ohidden, a) ? 'min' : '',
 				tds = QSA('#files>tbody>tr>td:nth-child(' + (a + 1) + ')');
 
-			for (var b = 0, bb = tds.length; b < bb; b++) {
+			for (var b = 0, bb = tds.length; b < bb; b++)
 				tds[b].setAttribute('class', cls);
-				if (a < 2)
-					continue;
-
-				if (cls) {
-					if (!tds[b].hasAttribute('html')) {
-						tds[b].setAttribute('html', tds[b].innerHTML);
-						tds[b].innerHTML = '...';
-					}
-				}
-				else if (tds[b].hasAttribute('html')) {
-					tds[b].innerHTML = tds[b].getAttribute('html');
-					tds[b].removeAttribute('html');
-				}
-			}
 		}
 	};
 	set_style();
@@ -1830,10 +2081,8 @@ var filecols = (function () {
 	try {
 		var ci = find_file_col('dur'),
 			i = ci[0],
-			min = ci[1],
 			rows = ebi('files').tBodies[0].rows;
 
-		if (!min)
 		for (var a = 0, aa = rows.length; a < aa; a++) {
 			var c = rows[a].cells[i];
 			if (c && c.textContent)

copyparty/web/dbg-audio.js

@@ -0,0 +1,61 @@
+var ofun = audio_eq.apply.bind(audio_eq);
+audio_eq.apply = function () {
+    var ac1 = mp.ac;
+    ofun();
+    var ac = mp.ac,
+        w = 2048,
+        h = 256;
+
+    if (!audio_eq.filters.length) {
+        audio_eq.ana = null;
+        return;
+    }
+
+    var can = ebi('fft_can');
+    if (!can) {
+        can = mknod('canvas');
+        can.setAttribute('id', 'fft_can');
+        can.style.cssText = 'position:absolute;left:0;bottom:5em;width:' + w + 'px;height:' + h + 'px;z-index:9001';
+        document.body.appendChild(can);
+        can.width = w;
+        can.height = h;
+    }
+    var cc = can.getContext('2d');
+    if (!ac)
+        return;
+
+    var ana = ac.createAnalyser();
+    ana.smoothingTimeConstant = 0;
+    ana.fftSize = 8192;
+
+    audio_eq.filters[0].connect(ana);
+    audio_eq.ana = ana;
+
+    var buf = new Uint8Array(ana.frequencyBinCount),
+        colw = can.width / buf.length;
+
+    cc.fillStyle = '#fc0';
+    function draw() {
+        if (ana == audio_eq.ana)
+            requestAnimationFrame(draw);
+
+        ana.getByteFrequencyData(buf);
+
+        cc.clearRect(0, 0, can.width, can.height);
+
+        /*var x = 0, w = 1;
+        for (var a = 0; a < buf.length; a++) {
+            cc.fillRect(x, h - buf[a], w, h);
+            x += w;
+        }*/
+        var mul = Math.pow(w, 4) / buf.length;
+        for (var x = 0; x < w; x++) {
+            var a = Math.floor(Math.pow(x, 4) / mul),
+                v = buf[a];
+
+            cc.fillRect(x, h - v, 1, v);
+        }
+    }
+    draw();
+};
+audio_eq.apply();

docs/biquad.html

@@ -0,0 +1,95 @@
+<!DOCTYPE html><html><head></head><body><script>
+
+setTimeout(location.reload.bind(location), 700);
+document.documentElement.scrollLeft = 0;
+
+var can = document.createElement('canvas'),
+    cc = can.getContext('2d'),
+    w = 2048,
+    h = 1024;
+
+w = 2048;
+
+can.width = w;
+can.height = h;
+document.body.appendChild(can);
+can.style.cssText = 'width:' + w + 'px;height:' + h + 'px';
+
+cc.fillStyle = '#000';
+cc.fillRect(0, 0, w, h);
+
+var cfg = [ // hz, q, g
+    [31.25 * 0.88, 0, 1.4],  // shelf
+    [31.25 * 1.04, 0.7, 0.96],  // peak
+    [62.5, 0.7, 1],
+    [125, 0.8, 1],
+    [250, 0.9, 1.03],
+    [500, 0.9, 1.1],
+    [1000, 0.9, 1.1],
+    [2000, 0.9, 1.105],
+    [4000, 0.88, 1.05],
+    [8000 * 1.006, 0.73, 1.24],
+    //[16000 * 1.00, 0.5, 1.75],  // peak.v1
+    //[16000 * 1.19, 0, 1.8]  // shelf.v1
+    [16000 * 0.89, 0.7, 1.26],  // peak
+    [16000 * 1.13, 0.82, 1.09],  // peak
+    [16000 * 1.205, 0, 1.9]  // shelf
+];
+
+var freqs = new Float32Array(22000),
+    sum = new Float32Array(freqs.length),
+    ac = new AudioContext(),
+    step = w / freqs.length,
+    colors = [
+        'rgba(255, 0, 0, 0.7)',
+        'rgba(0, 224, 0, 0.7)',
+        'rgba(0, 64, 255, 0.7)'
+    ];
+
+var order = [];
+
+for (var a = 0; a < cfg.length; a += 2)
+    order.push(a);
+
+for (var a = 1; a < cfg.length; a += 2)
+    order.push(a);
+
+for (var ia = 0; ia < order.length; ia++) {
+    var a = order[ia],
+        fi = ac.createBiquadFilter(),
+        mag = new Float32Array(freqs.length),
+        phase = new Float32Array(freqs.length);
+
+    for (var b = 0; b < freqs.length; b++)
+        freqs[b] = b;
+
+    fi.type = a == 0 ? 'lowshelf' : a == cfg.length - 1 ? 'highshelf' : 'peaking';
+    fi.frequency.value = cfg[a][0];
+    fi.Q.value = cfg[a][1];
+    fi.gain.value = 1;
+
+    fi.getFrequencyResponse(freqs, mag, phase);
+    cc.fillStyle = colors[a % colors.length];
+    for (var b = 0; b < sum.length; b++) {
+        mag[b] -= 1;
+        sum[b] += mag[b] * cfg[a][2];
+        var y = h - (mag[b] * h * 3);
+        cc.fillRect(b * step, y, step, h - y);
+        cc.fillRect(b * step - 1, y - 1, 3, 3);
+    }
+}
+
+var min = 999999, max = 0;
+for (var a = 0; a < sum.length; a++) {
+    min = Math.min(min, sum[a]);
+    max = Math.max(max, sum[a]);
+}
+cc.fillStyle = 'rgba(255,255,255,1)';
+for (var a = 0; a < sum.length; a++) {
+    var v = (sum[a] - min) / (max - min);
+    cc.fillRect(a * step, 0, step, v * h / 2);
+}
+
+cc.fillRect(0, 460, w, 1);
+
+</script></body></html>

docs/tcp-debug.sh

@@ -0,0 +1,32 @@
+(cd ~/dev/copyparty && strace -Tttyyvfs 256 -o strace.strace python3 -um copyparty -i 127.0.0.1 --http-only --stackmon /dev/shm/cpps,10 ) 2>&1 | tee /dev/stderr > ~/log-copyparty-$(date +%Y-%m%d-%H%M%S).txt
+
+14/Jun/2021:16:34:02 1623688447.212405 death
+14/Jun/2021:16:35:02 1623688502.420860 back
+
+tcpdump -nni lo -w /home/ed/lo.pcap
+
+# 16:35:25.324662 IP 127.0.0.1.48632 > 127.0.0.1.3920: Flags [F.], seq 849, ack 544, win 359, options [nop,nop,TS val 809396796 ecr 809396796], length 0
+
+tcpdump -nnr /home/ed/lo.pcap | awk '/ > 127.0.0.1.3920: /{sub(/ > .*/,"");sub(/.*\./,"");print}' | sort -n | uniq | while IFS= read -r port; do echo; tcpdump -nnr /home/ed/lo.pcap 2>/dev/null | grep -E "\.$port( > |: F)" | sed -r 's/ > .*, /, /'; done | grep -E '^16:35:0.*length [^0]' -C50
+
+16:34:02.441732 IP 127.0.0.1.48638, length 0
+16:34:02.441738 IP 127.0.0.1.3920, length 0
+16:34:02.441744 IP 127.0.0.1.48638, length 0
+16:34:02.441756 IP 127.0.0.1.48638, length 791
+16:34:02.441759 IP 127.0.0.1.3920, length 0
+16:35:02.445529 IP 127.0.0.1.48638, length 0
+16:35:02.489194 IP 127.0.0.1.3920, length 0
+16:35:02.515595 IP 127.0.0.1.3920, length 216
+16:35:02.515600 IP 127.0.0.1.48638, length 0
+
+grep 48638 "$(find ~ -maxdepth 1 -name log-copyparty-\*.txt | sort | tail -n 1)"
+
+1623688502.510380 48638 rh
+1623688502.511291 48638 Unrecv direct ...
+1623688502.511827 48638 rh = 791
+16:35:02.518 127.0.0.1 48638       shut(8): [Errno 107] Socket not connected
+Exception in thread httpsrv-0.1-48638:
+
+grep 48638 ~/dev/copyparty/strace.strace
+14561 16:35:02.506310 <... accept4 resumed> {sa_family=AF_INET, sin_port=htons(48638), sin_addr=inet_addr("127.0.0.1")}, [16], SOCK_CLOEXEC) = 8<TCP:[127.0.0.1:3920->127.0.0.1:48638]> <0.000012>
+15230 16:35:02.510725 write(1<pipe:[256639555]>, "1623688502.510380 48638 rh\n", 27 <unfinished ...>

scripts/make-sfx.sh

@@ -167,7 +167,7 @@ find .. -type f \( -name .DS_Store -or -name ._.DS_Store \) -delete
 find .. -type f -name ._\* | while IFS= read -r f; do cmp <(printf '\x00\x05\x16') <(head -c 3 -- "$f") && rm -f -- "$f"; done
 
 echo use smol web deps
-rm -f copyparty/web/deps/*.full.* copyparty/web/Makefile
+rm -f copyparty/web/deps/*.full.* copyparty/web/dbg-* copyparty/web/Makefile
 
 # it's fine dw
 grep -lE '\.full\.(js|css)' copyparty/web/* |