SquashSRS4: Add one to one RTC demo.

trunk/3rdparty/signaling/www/demos/js/srs.sig.js

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+
+/**
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2013-2021 Winlin
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+'use strict';
+
+// Async-await-promise based SRS RTC Signaling.
+function SrsRtcSignalingAsync() {
+    var self = {};
+
+    // The schema is ws or wss, host is ip or ip:port, display is nickname
+    // of user to join the room.
+    self.connect = async function (schema, host, room, display) {
+        var url = schema + '://' + host + '/sig/v1/rtc';
+        self.ws = new WebSocket(url + '?room=' + room + '&display=' + display);
+
+        self.ws.onmessage = function(event) {
+            var r = JSON.parse(event.data);
+            var promise = self._internals.msgs[r.tid];
+            if (promise) {
+                promise.resolve(r.msg);
+                delete self._internals.msgs[r.tid];
+            } else {
+                self.onmessage(r.msg);
+            }
+        };
+
+        return new Promise(function (resolve, reject) {
+            self.ws.onopen = function (event) {
+                resolve(event);
+            };
+
+            self.ws.onerror = function (event) {
+                reject(event);
+            };
+        });
+    };
+
+    // The message is a json object.
+    self.send = async function (message) {
+        return new Promise(function (resolve, reject) {
+            var r = {tid: new Date().getTime().toString(16), msg: message};
+            self._internals.msgs[r.tid] = {resolve: resolve, reject: reject};
+            self.ws.send(JSON.stringify(r));
+        });
+    };
+
+    self.close = function () {
+        self.ws && self.ws.close();
+        self.ws = null;
+
+        for (const tid in self._internals.msgs) {
+            var promise = self._internals.msgs[tid];
+            promise.reject('close');
+        }
+    };
+
+    // The callback when got messages from signaling server.
+    self.onmessage = function (msg) {
+    };
+
+    self._internals = {
+        // Key is tid, value is object {resolve, reject, response}.
+        msgs: {}
+    };
+
+    return self;
+}
+
+// Parse params in query string.
+function SrsRtcSignalingParse(location) {
+    let query = location.href.split('?')[1];
+    query = query? '?' + query : null;
+
+    let wsSchema = location.href.split('wss=')[1];
+    wsSchema = wsSchema? wsSchema.split('&')[0] : (location.protocol === 'http:'? 'ws' : 'wss');
+
+    let wsHost = location.href.split('wsh=')[1];
+    wsHost = wsHost? wsHost.split('&')[0] : location.hostname;
+
+    let wsPort = location.href.split('wsp=')[1];
+    wsPort = wsPort? wsPort.split('&')[0] : location.host.split(':')[1];
+    wsHost = wsPort? wsHost.split(':')[0] + ':' + wsPort : wsHost;
+
+    let host = location.href.split('host=')[1];
+    host = host? host.split('&')[0] : location.hostname;
+
+    let room = location.href.split('room=')[1];
+
+    let display = location.href.split('display=')[1];
+    display = display? display.split('&')[0] : new Date().getTime().toString(16).substr(3);
+
+    let autostart = location.href.split('autostart=')[1];
+    autostart = autostart && autostart.split('&')[0] === 'true';
+
+    return {
+        query: query, wsSchema: wsSchema, wsHost: wsHost, host: host,
+        room: room, display: display, autostart: autostart,
+    };
+}