mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-03 02:25:34 +00:00
1980 lines
56 KiB
JavaScript
1980 lines
56 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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const lazy = {};
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ChromeUtils.defineModuleGetter(
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lazy,
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"PeerConnectionIdp",
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"resource://gre/modules/media/PeerConnectionIdp.jsm"
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);
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const PC_CONTRACT = "@mozilla.org/dom/peerconnection;1";
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const PC_OBS_CONTRACT = "@mozilla.org/dom/peerconnectionobserver;1";
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const PC_ICE_CONTRACT = "@mozilla.org/dom/rtcicecandidate;1";
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const PC_SESSION_CONTRACT = "@mozilla.org/dom/rtcsessiondescription;1";
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const PC_STATIC_CONTRACT = "@mozilla.org/dom/peerconnectionstatic;1";
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const PC_COREQUEST_CONTRACT = "@mozilla.org/dom/createofferrequest;1";
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const PC_CID = Components.ID("{bdc2e533-b308-4708-ac8e-a8bfade6d851}");
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const PC_OBS_CID = Components.ID("{d1748d4c-7f6a-4dc5-add6-d55b7678537e}");
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const PC_ICE_CID = Components.ID("{02b9970c-433d-4cc2-923d-f7028ac66073}");
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const PC_SESSION_CID = Components.ID("{1775081b-b62d-4954-8ffe-a067bbf508a7}");
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const PC_MANAGER_CID = Components.ID("{7293e901-2be3-4c02-b4bd-cbef6fc24f78}");
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const PC_STATIC_CID = Components.ID("{0fb47c47-a205-4583-a9fc-cbadf8c95880}");
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const PC_COREQUEST_CID = Components.ID(
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"{74b2122d-65a8-4824-aa9e-3d664cb75dc2}"
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);
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function logMsg(msg, file, line, flag, winID) {
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let scriptErrorClass = Cc["@mozilla.org/scripterror;1"];
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let scriptError = scriptErrorClass.createInstance(Ci.nsIScriptError);
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scriptError.initWithWindowID(
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`WebRTC: ${msg}`,
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file,
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null,
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line,
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0,
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flag,
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"content javascript",
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winID
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);
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Services.console.logMessage(scriptError);
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}
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let setupPrototype = (_class, dict) => {
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_class.prototype.classDescription = _class.name;
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Object.assign(_class.prototype, dict);
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};
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// Global list of PeerConnection objects, so they can be cleaned up when
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// a page is torn down. (Maps inner window ID to an array of PC objects).
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class GlobalPCList {
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constructor() {
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this._list = {};
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this._networkdown = false; // XXX Need to query current state somehow
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this._lifecycleobservers = {};
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this._nextId = 1;
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Services.obs.addObserver(this, "inner-window-destroyed", true);
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Services.obs.addObserver(this, "profile-change-net-teardown", true);
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Services.obs.addObserver(this, "network:offline-about-to-go-offline", true);
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Services.obs.addObserver(this, "network:offline-status-changed", true);
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Services.obs.addObserver(this, "gmp-plugin-crash", true);
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Services.obs.addObserver(this, "PeerConnection:response:allow", true);
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Services.obs.addObserver(this, "PeerConnection:response:deny", true);
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if (Services.cpmm) {
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Services.cpmm.addMessageListener("gmp-plugin-crash", this);
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}
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}
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notifyLifecycleObservers(pc, type) {
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for (var key of Object.keys(this._lifecycleobservers)) {
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this._lifecycleobservers[key](pc, pc._winID, type);
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}
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}
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addPC(pc) {
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let winID = pc._winID;
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if (this._list[winID]) {
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this._list[winID].push(Cu.getWeakReference(pc));
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} else {
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this._list[winID] = [Cu.getWeakReference(pc)];
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}
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pc._globalPCListId = this._nextId++;
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this.removeNullRefs(winID);
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}
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findPC(globalPCListId) {
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for (let winId in this._list) {
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if (this._list.hasOwnProperty(winId)) {
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for (let pcref of this._list[winId]) {
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let pc = pcref.get();
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if (pc && pc._globalPCListId == globalPCListId) {
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return pc;
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}
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}
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}
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}
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return null;
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}
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removeNullRefs(winID) {
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if (this._list[winID] === undefined) {
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return;
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}
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this._list[winID] = this._list[winID].filter(function(e, i, a) {
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return e.get() !== null;
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});
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if (this._list[winID].length === 0) {
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delete this._list[winID];
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}
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}
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handleGMPCrash(data) {
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let broadcastPluginCrash = function(list, winID, pluginID, pluginName) {
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if (list.hasOwnProperty(winID)) {
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list[winID].forEach(function(pcref) {
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let pc = pcref.get();
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if (pc) {
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pc._pc.pluginCrash(pluginID, pluginName);
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}
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});
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}
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};
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// a plugin crashed; if it's associated with any of our PCs, fire an
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// event to the DOM window
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for (let winId in this._list) {
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broadcastPluginCrash(this._list, winId, data.pluginID, data.pluginName);
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}
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}
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receiveMessage({ name, data }) {
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if (name == "gmp-plugin-crash") {
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this.handleGMPCrash(data);
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}
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}
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observe(subject, topic, data) {
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let cleanupPcRef = function(pcref) {
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let pc = pcref.get();
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if (pc) {
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pc._suppressEvents = true;
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pc.close();
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}
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};
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let cleanupWinId = function(list, winID) {
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if (list.hasOwnProperty(winID)) {
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list[winID].forEach(cleanupPcRef);
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delete list[winID];
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}
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};
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if (topic == "inner-window-destroyed") {
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let winID = subject.QueryInterface(Ci.nsISupportsPRUint64).data;
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cleanupWinId(this._list, winID);
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if (this._lifecycleobservers.hasOwnProperty(winID)) {
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delete this._lifecycleobservers[winID];
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}
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} else if (
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topic == "profile-change-net-teardown" ||
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topic == "network:offline-about-to-go-offline"
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) {
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// As Necko doesn't prevent us from accessing the network we still need to
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// monitor the network offline/online state here. See bug 1326483
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this._networkdown = true;
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} else if (topic == "network:offline-status-changed") {
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if (data == "offline") {
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this._networkdown = true;
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} else if (data == "online") {
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this._networkdown = false;
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}
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} else if (topic == "gmp-plugin-crash") {
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if (subject instanceof Ci.nsIWritablePropertyBag2) {
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let pluginID = subject.getPropertyAsUint32("pluginID");
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let pluginName = subject.getPropertyAsAString("pluginName");
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let data = { pluginID, pluginName };
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this.handleGMPCrash(data);
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}
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} else if (
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topic == "PeerConnection:response:allow" ||
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topic == "PeerConnection:response:deny"
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) {
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var pc = this.findPC(data);
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if (pc) {
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if (topic == "PeerConnection:response:allow") {
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pc._settlePermission.allow();
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} else {
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let err = new pc._win.DOMException(
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"The request is not allowed by " +
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"the user agent or the platform in the current context.",
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"NotAllowedError"
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);
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pc._settlePermission.deny(err);
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}
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}
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}
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}
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_registerPeerConnectionLifecycleCallback(winID, cb) {
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this._lifecycleobservers[winID] = cb;
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}
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}
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setupPrototype(GlobalPCList, {
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QueryInterface: ChromeUtils.generateQI([
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"nsIObserver",
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"nsISupportsWeakReference",
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]),
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classID: PC_MANAGER_CID,
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});
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var _globalPCList = new GlobalPCList();
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class RTCIceCandidate {
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init(win) {
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this._win = win;
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}
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__init(dict) {
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if (dict.sdpMid == null && dict.sdpMLineIndex == null) {
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throw new this._win.TypeError(
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"Either sdpMid or sdpMLineIndex must be specified"
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);
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}
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Object.assign(this, dict);
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}
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}
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setupPrototype(RTCIceCandidate, {
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classID: PC_ICE_CID,
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contractID: PC_ICE_CONTRACT,
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QueryInterface: ChromeUtils.generateQI(["nsIDOMGlobalPropertyInitializer"]),
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});
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class RTCSessionDescription {
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init(win) {
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this._win = win;
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this._winID = this._win.windowGlobalChild.innerWindowId;
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}
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__init({ type, sdp }) {
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if (!type) {
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throw new this._win.TypeError(
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"Missing required 'type' member of RTCSessionDescriptionInit"
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);
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}
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Object.assign(this, { _type: type, _sdp: sdp });
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}
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get type() {
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return this._type;
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}
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set type(type) {
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this.warn();
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this._type = type;
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}
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get sdp() {
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return this._sdp;
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}
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set sdp(sdp) {
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this.warn();
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this._sdp = sdp;
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}
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warn() {
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if (!this._warned) {
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// Warn once per RTCSessionDescription about deprecated writable usage.
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this.logWarning(
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"RTCSessionDescription's members are readonly! " +
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"Writing to them is deprecated and will break soon!"
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);
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this._warned = true;
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}
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}
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logWarning(msg) {
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let err = this._win.Error();
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logMsg(
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msg,
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err.fileName,
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err.lineNumber,
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Ci.nsIScriptError.warningFlag,
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this._winID
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);
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}
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}
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setupPrototype(RTCSessionDescription, {
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classID: PC_SESSION_CID,
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contractID: PC_SESSION_CONTRACT,
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QueryInterface: ChromeUtils.generateQI(["nsIDOMGlobalPropertyInitializer"]),
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});
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// Records PC related telemetry
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class PeerConnectionTelemetry {
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// ICE connection state enters connected or completed.
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recordConnected() {
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Services.telemetry.scalarAdd("webrtc.peerconnection.connected", 1);
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this.recordConnected = () => {};
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}
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// DataChannel is created
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_recordDataChannelCreated() {
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Services.telemetry.scalarAdd(
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"webrtc.peerconnection.datachannel_created",
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1
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);
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this._recordDataChannelCreated = () => {};
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}
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// DataChannel initialized with maxRetransmitTime
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_recordMaxRetransmitTime(maxRetransmitTime) {
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if (maxRetransmitTime === undefined) {
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return false;
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}
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Services.telemetry.scalarAdd(
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"webrtc.peerconnection.datachannel_max_retx_used",
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1
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);
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this._recordMaxRetransmitTime = () => true;
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return true;
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}
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// DataChannel initialized with maxPacketLifeTime
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_recordMaxPacketLifeTime(maxPacketLifeTime) {
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if (maxPacketLifeTime === undefined) {
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return false;
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}
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Services.telemetry.scalarAdd(
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"webrtc.peerconnection.datachannel_max_life_used",
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1
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);
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this._recordMaxPacketLifeTime = () => true;
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return true;
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}
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// DataChannel initialized
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recordDataChannelInit(maxRetransmitTime, maxPacketLifeTime) {
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const retxUsed = this._recordMaxRetransmitTime(maxRetransmitTime);
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if (this._recordMaxPacketLifeTime(maxPacketLifeTime) && retxUsed) {
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Services.telemetry.scalarAdd(
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"webrtc.peerconnection.datachannel_max_retx_and_life_used",
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1
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);
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this.recordDataChannelInit = () => {};
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}
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this._recordDataChannelCreated();
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}
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}
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class RTCPeerConnection {
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constructor() {
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this._pc = null;
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this._closed = false;
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// http://rtcweb-wg.github.io/jsep/#rfc.section.4.1.9
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// canTrickle == null means unknown; when a remote description is received it
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// is set to true or false based on the presence of the "trickle" ice-option
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this._canTrickle = null;
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// So we can record telemetry on state transitions
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this._iceConnectionState = "new";
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this._hasStunServer = this._hasTurnServer = false;
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this._iceGatheredRelayCandidates = false;
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// Records telemetry
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this._pcTelemetry = new PeerConnectionTelemetry();
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}
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init(win) {
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this._win = win;
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}
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// Pref-based overrides; will _not_ be reflected in getConfiguration
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_applyPrefsToConfig(rtcConfig) {
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if (
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rtcConfig.iceTransportPolicy == "all" &&
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Services.prefs.getBoolPref("media.peerconnection.ice.relay_only")
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) {
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rtcConfig.iceTransportPolicy = "relay";
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}
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if (
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!rtcConfig.iceServers ||
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!Services.prefs.getBoolPref(
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"media.peerconnection.use_document_iceservers"
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)
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) {
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try {
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rtcConfig.iceServers = JSON.parse(
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Services.prefs.getCharPref(
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"media.peerconnection.default_iceservers"
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) || "[]"
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);
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} catch (e) {
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this.logWarning(
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"Ignoring invalid media.peerconnection.default_iceservers in about:config"
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);
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rtcConfig.iceServers = [];
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}
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try {
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this._validateIceServers(
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rtcConfig.iceServers,
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"Ignoring invalid media.peerconnection.default_iceservers in about:config"
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);
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} catch (e) {
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this.logWarning(e.message);
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rtcConfig.iceServers = [];
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}
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}
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}
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_validateConfig(rtcConfig) {
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if ("sdpSemantics" in rtcConfig) {
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if (rtcConfig.sdpSemantics == "plan-b") {
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this.logWarning(
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`Outdated and non-standard {sdpSemantics: "plan-b"} is not ` +
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`supported! WebRTC may be unreliable. Please update code to ` +
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`follow standard "unified-plan".`
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);
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}
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// Don't let it show up in getConfiguration.
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delete rtcConfig.sdpSemantics;
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}
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if (this._config) {
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// certificates must match
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if (rtcConfig.certificates.length != this._config.certificates.length) {
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throw new this._win.DOMException(
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"Cannot change certificates with setConfiguration (length differs)",
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"InvalidModificationError"
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);
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}
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for (let i = 0; i < rtcConfig.certificates.length; i++) {
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if (rtcConfig.certificates[i] != this._config.certificates[i]) {
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throw new this._win.DOMException(
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`Cannot change certificates with setConfiguration ` +
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`(cert at index ${i} differs)`,
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"InvalidModificationError"
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);
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}
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}
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// bundlePolicy must match
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if (rtcConfig.bundlePolicy != this._config.bundlePolicy) {
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throw new this._win.DOMException(
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"Cannot change bundlePolicy with setConfiguration",
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"InvalidModificationError"
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);
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}
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// peerIdentity must match
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if (
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rtcConfig.peerIdentity &&
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rtcConfig.peerIdentity != this._config.peerIdentity
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) {
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throw new this._win.DOMException(
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"Cannot change peerIdentity with setConfiguration",
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"InvalidModificationError"
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);
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}
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// TODO (bug 1339203): rtcpMuxPolicy must match
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// TODO (bug 1529398): iceCandidatePoolSize must match if sLD has ever
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// been called.
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}
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// This gets executed in the typical case when iceServers
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// are passed in through the web page.
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this._validateIceServers(
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rtcConfig.iceServers,
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"RTCPeerConnection constructor passed invalid RTCConfiguration"
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);
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}
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_checkIfIceRestartRequired(rtcConfig) {
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if (this._config) {
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if (rtcConfig.iceTransportPolicy != this._config.iceTransportPolicy) {
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this._pc.restartIceNoRenegotiationNeeded();
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return;
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}
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if (
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JSON.stringify(this._config.iceServers) !=
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JSON.stringify(rtcConfig.iceServers)
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) {
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this._pc.restartIceNoRenegotiationNeeded();
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}
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}
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}
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__init(rtcConfig) {
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this._winID = this._win.windowGlobalChild.innerWindowId;
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let certificates = rtcConfig.certificates || [];
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if (certificates.some(c => c.expires <= Date.now())) {
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throw new this._win.DOMException(
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"Unable to create RTCPeerConnection with an expired certificate",
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"InvalidAccessError"
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);
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}
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// TODO(bug 1531875): Check origin of certs
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// TODO(bug 1176518): Remove this code once we support multiple certs
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let certificate;
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if (certificates.length == 1) {
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certificate = certificates[0];
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} else if (certificates.length) {
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throw new this._win.DOMException(
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"RTCPeerConnection does not currently support multiple certificates",
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"NotSupportedError"
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);
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}
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this._documentPrincipal = Cu.getWebIDLCallerPrincipal();
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if (_globalPCList._networkdown) {
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throw new this._win.DOMException(
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"Can't create RTCPeerConnections when the network is down",
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"InvalidStateError"
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);
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}
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this.makeGetterSetterEH("ontrack");
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this.makeLegacyGetterSetterEH(
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"onaddstream",
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"Use peerConnection.ontrack instead."
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|
);
|
|
this.makeLegacyGetterSetterEH(
|
|
"onaddtrack",
|
|
"Use peerConnection.ontrack instead."
|
|
);
|
|
this.makeGetterSetterEH("onicecandidate");
|
|
this.makeGetterSetterEH("onnegotiationneeded");
|
|
this.makeGetterSetterEH("onsignalingstatechange");
|
|
this.makeGetterSetterEH("ondatachannel");
|
|
this.makeGetterSetterEH("oniceconnectionstatechange");
|
|
this.makeGetterSetterEH("onicegatheringstatechange");
|
|
this.makeGetterSetterEH("onidentityresult");
|
|
this.makeGetterSetterEH("onpeeridentity");
|
|
this.makeGetterSetterEH("onidpassertionerror");
|
|
this.makeGetterSetterEH("onidpvalidationerror");
|
|
|
|
this._pc = new this._win.PeerConnectionImpl();
|
|
|
|
this.__DOM_IMPL__._innerObject = this;
|
|
const observer = new this._win.PeerConnectionObserver(this.__DOM_IMPL__);
|
|
|
|
// Add a reference to the PeerConnection to global list (before init).
|
|
_globalPCList.addPC(this);
|
|
|
|
this._pc.initialize(observer, this._win);
|
|
|
|
this.setConfiguration(rtcConfig);
|
|
|
|
this._certificateReady = this._initCertificate(certificate);
|
|
this._initIdp();
|
|
_globalPCList.notifyLifecycleObservers(this, "initialized");
|
|
}
|
|
|
|
getConfiguration() {
|
|
const config = Object.assign({}, this._config);
|
|
delete config.sdpSemantics;
|
|
return config;
|
|
}
|
|
|
|
setConfiguration(rtcConfig) {
|
|
this._checkClosed();
|
|
this._validateConfig(rtcConfig);
|
|
this._checkIfIceRestartRequired(rtcConfig);
|
|
|
|
// Allow prefs to tweak these settings before passing to c++, but hide all
|
|
// of that from JS.
|
|
const configWithPrefTweaks = Object.assign({}, rtcConfig);
|
|
this._applyPrefsToConfig(configWithPrefTweaks);
|
|
this._pc.setConfiguration(configWithPrefTweaks);
|
|
|
|
this._config = Object.assign({}, rtcConfig);
|
|
}
|
|
|
|
async _initCertificate(certificate) {
|
|
if (!certificate) {
|
|
certificate = await this._win.RTCPeerConnection.generateCertificate({
|
|
name: "ECDSA",
|
|
namedCurve: "P-256",
|
|
});
|
|
}
|
|
this._pc.certificate = certificate;
|
|
}
|
|
|
|
_resetPeerIdentityPromise() {
|
|
this._peerIdentity = new this._win.Promise((resolve, reject) => {
|
|
this._resolvePeerIdentity = resolve;
|
|
this._rejectPeerIdentity = reject;
|
|
});
|
|
}
|
|
|
|
_initIdp() {
|
|
this._resetPeerIdentityPromise();
|
|
this._lastIdentityValidation = this._win.Promise.resolve();
|
|
|
|
let prefName = "media.peerconnection.identity.timeout";
|
|
let idpTimeout = Services.prefs.getIntPref(prefName);
|
|
this._localIdp = new lazy.PeerConnectionIdp(this._win, idpTimeout);
|
|
this._remoteIdp = new lazy.PeerConnectionIdp(this._win, idpTimeout);
|
|
}
|
|
|
|
// Add a function to the internal operations chain.
|
|
|
|
_chain(operation) {
|
|
return this._pc.chain(operation);
|
|
}
|
|
|
|
// It's basically impossible to use async directly in JSImplemented code,
|
|
// because the implicit promise must be wrapped to the right type for content.
|
|
//
|
|
// The _async wrapper takes care of this. The _legacy wrapper implements
|
|
// legacy callbacks in a manner that produces correct line-numbers in errors,
|
|
// provided that methods validate their inputs before putting themselves on
|
|
// the pc's operations chain.
|
|
//
|
|
// These wrappers also serve as guards against settling promises past close().
|
|
|
|
_async(func) {
|
|
return this._win.Promise.resolve(this._closeWrapper(func));
|
|
}
|
|
|
|
_legacy(...args) {
|
|
return this._win.Promise.resolve(this._legacyCloseWrapper(...args));
|
|
}
|
|
|
|
_auto(onSucc, onErr, func) {
|
|
return typeof onSucc == "function"
|
|
? this._legacy(onSucc, onErr, func)
|
|
: this._async(func);
|
|
}
|
|
|
|
async _closeWrapper(func) {
|
|
let closed = this._closed;
|
|
try {
|
|
let result = await func();
|
|
if (!closed && this._closed) {
|
|
await new Promise(() => {});
|
|
}
|
|
return result;
|
|
} catch (e) {
|
|
if (!closed && this._closed) {
|
|
await new Promise(() => {});
|
|
}
|
|
throw e;
|
|
}
|
|
}
|
|
|
|
async _legacyCloseWrapper(onSucc, onErr, func) {
|
|
let wrapCallback = cb => result => {
|
|
try {
|
|
cb && cb(result);
|
|
} catch (e) {
|
|
this.logErrorAndCallOnError(e);
|
|
}
|
|
};
|
|
|
|
try {
|
|
wrapCallback(onSucc)(await func());
|
|
} catch (e) {
|
|
wrapCallback(onErr)(e);
|
|
}
|
|
}
|
|
|
|
// This implements the fairly common "Queue a task" logic
|
|
async _queueTaskWithClosedCheck(func) {
|
|
const pc = this;
|
|
return new this._win.Promise((resolve, reject) => {
|
|
Services.tm.dispatchToMainThread({
|
|
run() {
|
|
try {
|
|
if (!pc._closed) {
|
|
func();
|
|
resolve();
|
|
}
|
|
} catch (e) {
|
|
reject(e);
|
|
}
|
|
},
|
|
});
|
|
});
|
|
}
|
|
|
|
/**
|
|
* An RTCConfiguration may look like this:
|
|
*
|
|
* { "iceServers": [ { urls: "stun:stun.example.org", },
|
|
* { url: "stun:stun.example.org", }, // deprecated version
|
|
* { urls: ["turn:turn1.x.org", "turn:turn2.x.org"],
|
|
* username:"jib", credential:"mypass"} ] }
|
|
*
|
|
* This function normalizes the structure of the input for rtcConfig.iceServers for us,
|
|
* so we test well-formed stun/turn urls before passing along to C++.
|
|
* msg - Error message to detail which array-entry failed, if any.
|
|
*/
|
|
_validateIceServers(iceServers, msg) {
|
|
// Normalize iceServers input
|
|
iceServers.forEach(server => {
|
|
if (typeof server.urls === "string") {
|
|
server.urls = [server.urls];
|
|
} else if (!server.urls && server.url) {
|
|
// TODO: Remove support for legacy iceServer.url eventually (Bug 1116766)
|
|
server.urls = [server.url];
|
|
this.logWarning("RTCIceServer.url is deprecated! Use urls instead.");
|
|
}
|
|
});
|
|
|
|
let nicerNewURI = uriStr => {
|
|
try {
|
|
return Services.io.newURI(uriStr);
|
|
} catch (e) {
|
|
if (e.result == Cr.NS_ERROR_MALFORMED_URI) {
|
|
throw new this._win.DOMException(
|
|
`${msg} - malformed URI: ${uriStr}`,
|
|
"SyntaxError"
|
|
);
|
|
}
|
|
throw e;
|
|
}
|
|
};
|
|
|
|
var stunServers = 0;
|
|
|
|
iceServers.forEach(({ urls, username, credential, credentialType }) => {
|
|
if (!urls) {
|
|
// TODO: Remove once url is deprecated (Bug 1369563)
|
|
throw new this._win.TypeError(
|
|
"Missing required 'urls' member of RTCIceServer"
|
|
);
|
|
}
|
|
if (urls.length == 0) {
|
|
throw new this._win.DOMException(
|
|
`${msg} - urls is empty`,
|
|
"SyntaxError"
|
|
);
|
|
}
|
|
urls
|
|
.map(url => nicerNewURI(url))
|
|
.forEach(({ scheme, spec }) => {
|
|
if (scheme in { turn: 1, turns: 1 }) {
|
|
if (username == undefined) {
|
|
throw new this._win.DOMException(
|
|
`${msg} - missing username: ${spec}`,
|
|
"InvalidAccessError"
|
|
);
|
|
}
|
|
if (username.length > 512) {
|
|
throw new this._win.DOMException(
|
|
`${msg} - username longer then 512 bytes: ${username}`,
|
|
"InvalidAccessError"
|
|
);
|
|
}
|
|
if (credential == undefined) {
|
|
throw new this._win.DOMException(
|
|
`${msg} - missing credential: ${spec}`,
|
|
"InvalidAccessError"
|
|
);
|
|
}
|
|
if (credentialType != "password") {
|
|
this.logWarning(
|
|
`RTCConfiguration TURN credentialType \"${credentialType}\"` +
|
|
" is not yet implemented. Treating as password." +
|
|
" https://bugzil.la/1247616"
|
|
);
|
|
}
|
|
this._hasTurnServer = true;
|
|
stunServers += 1;
|
|
} else if (scheme in { stun: 1, stuns: 1 }) {
|
|
this._hasStunServer = true;
|
|
stunServers += 1;
|
|
} else {
|
|
throw new this._win.DOMException(
|
|
`${msg} - improper scheme: ${scheme}`,
|
|
"SyntaxError"
|
|
);
|
|
}
|
|
if (scheme in { stuns: 1 }) {
|
|
this.logWarning(scheme.toUpperCase() + " is not yet supported.");
|
|
}
|
|
if (stunServers >= 5) {
|
|
this.logError(
|
|
"Using five or more STUN/TURN servers causes problems"
|
|
);
|
|
} else if (stunServers > 2) {
|
|
this.logWarning(
|
|
"Using more than two STUN/TURN servers slows down discovery"
|
|
);
|
|
}
|
|
});
|
|
});
|
|
}
|
|
|
|
// Ideally, this should be of the form _checkState(state),
|
|
// where the state is taken from an enumeration containing
|
|
// the valid peer connection states defined in the WebRTC
|
|
// spec. See Bug 831756.
|
|
_checkClosed() {
|
|
if (this._closed) {
|
|
throw new this._win.DOMException(
|
|
"Peer connection is closed",
|
|
"InvalidStateError"
|
|
);
|
|
}
|
|
}
|
|
|
|
dispatchEvent(event) {
|
|
// PC can close while events are firing if there is an async dispatch
|
|
// in c++ land. But let through "closed" signaling and ice connection events.
|
|
if (!this._suppressEvents) {
|
|
this.__DOM_IMPL__.dispatchEvent(event);
|
|
}
|
|
}
|
|
|
|
// Log error message to web console and window.onerror, if present.
|
|
logErrorAndCallOnError(e) {
|
|
this.logMsg(
|
|
e.message,
|
|
e.fileName,
|
|
e.lineNumber,
|
|
Ci.nsIScriptError.errorFlag
|
|
);
|
|
|
|
// Safely call onerror directly if present (necessary for testing)
|
|
try {
|
|
if (typeof this._win.onerror === "function") {
|
|
this._win.onerror(e.message, e.fileName, e.lineNumber);
|
|
}
|
|
} catch (e) {
|
|
// If onerror itself throws, service it.
|
|
try {
|
|
this.logMsg(
|
|
e.message,
|
|
e.fileName,
|
|
e.lineNumber,
|
|
Ci.nsIScriptError.errorFlag
|
|
);
|
|
} catch (e) {}
|
|
}
|
|
}
|
|
|
|
logError(msg) {
|
|
this.logStackMsg(msg, Ci.nsIScriptError.errorFlag);
|
|
}
|
|
|
|
logWarning(msg) {
|
|
this.logStackMsg(msg, Ci.nsIScriptError.warningFlag);
|
|
}
|
|
|
|
logStackMsg(msg, flag) {
|
|
let err = this._win.Error();
|
|
this.logMsg(msg, err.fileName, err.lineNumber, flag);
|
|
}
|
|
|
|
logMsg(msg, file, line, flag) {
|
|
return logMsg(msg, file, line, flag, this._winID);
|
|
}
|
|
|
|
getEH(type) {
|
|
return this.__DOM_IMPL__.getEventHandler(type);
|
|
}
|
|
|
|
setEH(type, handler) {
|
|
this.__DOM_IMPL__.setEventHandler(type, handler);
|
|
}
|
|
|
|
makeGetterSetterEH(name) {
|
|
Object.defineProperty(this, name, {
|
|
get() {
|
|
return this.getEH(name);
|
|
},
|
|
set(h) {
|
|
this.setEH(name, h);
|
|
},
|
|
});
|
|
}
|
|
|
|
makeLegacyGetterSetterEH(name, msg) {
|
|
Object.defineProperty(this, name, {
|
|
get() {
|
|
return this.getEH(name);
|
|
},
|
|
set(h) {
|
|
this.logWarning(name + " is deprecated! " + msg);
|
|
this.setEH(name, h);
|
|
},
|
|
});
|
|
}
|
|
|
|
createOffer(optionsOrOnSucc, onErr, options) {
|
|
let onSuccess = null;
|
|
if (typeof optionsOrOnSucc == "function") {
|
|
onSuccess = optionsOrOnSucc;
|
|
} else {
|
|
options = optionsOrOnSucc;
|
|
}
|
|
// This entry-point handles both new and legacy call sig. Decipher which one
|
|
if (onSuccess) {
|
|
return this._legacy(onSuccess, onErr, () => this._createOffer(options));
|
|
}
|
|
return this._async(() => this._createOffer(options));
|
|
}
|
|
|
|
// Ensures that we have at least one transceiver of |kind| that is
|
|
// configured to receive. It will create one if necessary.
|
|
_ensureOfferToReceive(kind) {
|
|
let hasRecv = this.getTransceivers().some(
|
|
transceiver =>
|
|
transceiver.getKind() == kind &&
|
|
(transceiver.direction == "sendrecv" ||
|
|
transceiver.direction == "recvonly") &&
|
|
!transceiver.stopped
|
|
);
|
|
|
|
if (!hasRecv) {
|
|
this._addTransceiverNoEvents(kind, { direction: "recvonly" });
|
|
}
|
|
}
|
|
|
|
// Handles offerToReceiveAudio/Video
|
|
_ensureTransceiversForOfferToReceive(options) {
|
|
if (options.offerToReceiveAudio) {
|
|
this._ensureOfferToReceive("audio");
|
|
}
|
|
|
|
if (options.offerToReceiveVideo) {
|
|
this._ensureOfferToReceive("video");
|
|
}
|
|
|
|
this.getTransceivers()
|
|
.filter(transceiver => {
|
|
return (
|
|
(options.offerToReceiveVideo === false &&
|
|
transceiver.receiver.track.kind == "video") ||
|
|
(options.offerToReceiveAudio === false &&
|
|
transceiver.receiver.track.kind == "audio")
|
|
);
|
|
})
|
|
.forEach(transceiver => {
|
|
if (transceiver.direction == "sendrecv") {
|
|
transceiver.setDirectionInternal("sendonly");
|
|
} else if (transceiver.direction == "recvonly") {
|
|
transceiver.setDirectionInternal("inactive");
|
|
}
|
|
});
|
|
}
|
|
|
|
_createOffer(options) {
|
|
this._checkClosed();
|
|
this._ensureTransceiversForOfferToReceive(options);
|
|
return this._chain(() => this._createAnOffer(options));
|
|
}
|
|
|
|
async _createAnOffer(options = {}) {
|
|
switch (this.signalingState) {
|
|
case "stable":
|
|
case "have-local-offer":
|
|
break;
|
|
default:
|
|
throw new this._win.DOMException(
|
|
`Cannot create offer in ${this.signalingState}`,
|
|
"InvalidStateError"
|
|
);
|
|
}
|
|
let haveAssertion;
|
|
if (this._localIdp.enabled) {
|
|
haveAssertion = this._getIdentityAssertion();
|
|
}
|
|
await this._getPermission();
|
|
await this._certificateReady;
|
|
let sdp = await new Promise((resolve, reject) => {
|
|
this._onCreateOfferSuccess = resolve;
|
|
this._onCreateOfferFailure = reject;
|
|
this._pc.createOffer(options);
|
|
});
|
|
if (haveAssertion) {
|
|
await haveAssertion;
|
|
sdp = this._localIdp.addIdentityAttribute(sdp);
|
|
}
|
|
return Cu.cloneInto({ type: "offer", sdp }, this._win);
|
|
}
|
|
|
|
createAnswer(optionsOrOnSucc, onErr) {
|
|
// This entry-point handles both new and legacy call sig. Decipher which one
|
|
if (typeof optionsOrOnSucc == "function") {
|
|
return this._legacy(optionsOrOnSucc, onErr, () => this._createAnswer({}));
|
|
}
|
|
return this._async(() => this._createAnswer(optionsOrOnSucc));
|
|
}
|
|
|
|
_createAnswer(options) {
|
|
this._checkClosed();
|
|
return this._chain(() => this._createAnAnswer());
|
|
}
|
|
|
|
async _createAnAnswer() {
|
|
if (this.signalingState != "have-remote-offer") {
|
|
throw new this._win.DOMException(
|
|
`Cannot create answer in ${this.signalingState}`,
|
|
"InvalidStateError"
|
|
);
|
|
}
|
|
let haveAssertion;
|
|
if (this._localIdp.enabled) {
|
|
haveAssertion = this._getIdentityAssertion();
|
|
}
|
|
await this._getPermission();
|
|
await this._certificateReady;
|
|
let sdp = await new Promise((resolve, reject) => {
|
|
this._onCreateAnswerSuccess = resolve;
|
|
this._onCreateAnswerFailure = reject;
|
|
this._pc.createAnswer();
|
|
});
|
|
if (haveAssertion) {
|
|
await haveAssertion;
|
|
sdp = this._localIdp.addIdentityAttribute(sdp);
|
|
}
|
|
return Cu.cloneInto({ type: "answer", sdp }, this._win);
|
|
}
|
|
|
|
async _getPermission() {
|
|
if (!this._havePermission) {
|
|
const privileged =
|
|
this._documentPrincipal.isSystemPrincipal ||
|
|
Services.prefs.getBoolPref("media.navigator.permission.disabled");
|
|
|
|
if (privileged) {
|
|
this._havePermission = Promise.resolve();
|
|
} else {
|
|
this._havePermission = new Promise((resolve, reject) => {
|
|
this._settlePermission = { allow: resolve, deny: reject };
|
|
let outerId = this._win.docShell.outerWindowID;
|
|
|
|
let chrome = new CreateOfferRequest(
|
|
outerId,
|
|
this._winID,
|
|
this._globalPCListId,
|
|
false
|
|
);
|
|
let request = this._win.CreateOfferRequest._create(this._win, chrome);
|
|
Services.obs.notifyObservers(request, "PeerConnection:request");
|
|
});
|
|
}
|
|
}
|
|
return this._havePermission;
|
|
}
|
|
|
|
_sanityCheckSdp(sdp) {
|
|
// The fippo butter finger filter AKA non-ASCII chars
|
|
// Note: SDP allows non-ASCII character in the subject (who cares?)
|
|
// eslint-disable-next-line no-control-regex
|
|
let pos = sdp.search(/[^\u0000-\u007f]/);
|
|
if (pos != -1) {
|
|
throw new this._win.DOMException(
|
|
"SDP contains non ASCII characters at position " + pos,
|
|
"InvalidParameterError"
|
|
);
|
|
}
|
|
}
|
|
|
|
setLocalDescription(desc, onSucc, onErr) {
|
|
return this._auto(onSucc, onErr, () => this._setLocalDescription(desc));
|
|
}
|
|
|
|
_setLocalDescription({ type, sdp }) {
|
|
if (type == "pranswer") {
|
|
throw new this._win.DOMException(
|
|
"pranswer not yet implemented",
|
|
"NotSupportedError"
|
|
);
|
|
}
|
|
this._checkClosed();
|
|
return this._chain(async () => {
|
|
// Avoid Promise.all ahead of synchronous part of spec algorithm, since it
|
|
// defers. NOTE: The spec says to return an already-rejected promise in
|
|
// some cases, which is difficult to achieve in practice from JS (would
|
|
// require avoiding await and then() entirely), but we want to come as
|
|
// close as we reasonably can.
|
|
const p = this._getPermission();
|
|
if (!type) {
|
|
switch (this.signalingState) {
|
|
case "stable":
|
|
case "have-local-offer":
|
|
case "have-remote-pranswer":
|
|
type = "offer";
|
|
break;
|
|
default:
|
|
type = "answer";
|
|
break;
|
|
}
|
|
}
|
|
if (!sdp) {
|
|
if (type == "offer") {
|
|
await this._createAnOffer();
|
|
} else if (type == "answer") {
|
|
await this._createAnAnswer();
|
|
}
|
|
} else {
|
|
this._sanityCheckSdp(sdp);
|
|
}
|
|
await new Promise((resolve, reject) => {
|
|
this._onSetDescriptionSuccess = resolve;
|
|
this._onSetDescriptionFailure = reject;
|
|
this._pc.setLocalDescription(this._actions[type], sdp);
|
|
});
|
|
await p;
|
|
});
|
|
}
|
|
|
|
async _validateIdentity(sdp, origin) {
|
|
// Only run a single identity verification at a time. We have to do this to
|
|
// avoid problems with the fact that identity validation doesn't block the
|
|
// resolution of setRemoteDescription().
|
|
const validate = async () => {
|
|
// Access this._pc synchronously in case pc is closed later
|
|
const identity = this._pc.peerIdentity;
|
|
await this._lastIdentityValidation;
|
|
const msg = await this._remoteIdp.verifyIdentityFromSDP(sdp, origin);
|
|
// If this pc has an identity already, then the identity in sdp must match
|
|
if (identity && (!msg || msg.identity !== identity)) {
|
|
throw new this._win.DOMException(
|
|
"Peer Identity mismatch, expected: " + identity,
|
|
"OperationError"
|
|
);
|
|
}
|
|
if (this._closed) {
|
|
return;
|
|
}
|
|
if (msg) {
|
|
// Set new identity and generate an event.
|
|
this._pc.peerIdentity = msg.identity;
|
|
this._resolvePeerIdentity(
|
|
Cu.cloneInto(
|
|
{
|
|
idp: this._remoteIdp.provider,
|
|
name: msg.identity,
|
|
},
|
|
this._win
|
|
)
|
|
);
|
|
}
|
|
};
|
|
|
|
const haveValidation = validate();
|
|
|
|
// Always eat errors on this chain
|
|
this._lastIdentityValidation = haveValidation.catch(() => {});
|
|
|
|
// If validation fails, we have some work to do. Fork it so it cannot
|
|
// interfere with the validation chain itself, even if the catch function
|
|
// throws.
|
|
haveValidation.catch(e => {
|
|
if (this._closed) {
|
|
return;
|
|
}
|
|
this._rejectPeerIdentity(e);
|
|
|
|
// If we don't expect a specific peer identity, failure to get a valid
|
|
// peer identity is not a terminal state, so replace the promise to
|
|
// allow another attempt.
|
|
if (!this._pc.peerIdentity) {
|
|
this._resetPeerIdentityPromise();
|
|
}
|
|
});
|
|
|
|
if (this._closed) {
|
|
return;
|
|
}
|
|
// Only wait for IdP validation if we need identity matching
|
|
if (this._pc.peerIdentity) {
|
|
await haveValidation;
|
|
}
|
|
}
|
|
|
|
setRemoteDescription(desc, onSucc, onErr) {
|
|
return this._auto(onSucc, onErr, () => this._setRemoteDescription(desc));
|
|
}
|
|
|
|
_setRemoteDescription({ type, sdp }) {
|
|
if (!type) {
|
|
throw new this._win.TypeError(
|
|
"Missing required 'type' member of RTCSessionDescriptionInit"
|
|
);
|
|
}
|
|
if (type == "pranswer") {
|
|
throw new this._win.DOMException(
|
|
"pranswer not yet implemented",
|
|
"NotSupportedError"
|
|
);
|
|
}
|
|
this._checkClosed();
|
|
return this._chain(async () => {
|
|
const haveSetRemote = (async () => {
|
|
if (type == "offer" && this.signalingState == "have-local-offer") {
|
|
await new Promise((resolve, reject) => {
|
|
this._onSetDescriptionSuccess = resolve;
|
|
this._onSetDescriptionFailure = reject;
|
|
this._pc.setLocalDescription(
|
|
Ci.IPeerConnection.kActionRollback,
|
|
""
|
|
);
|
|
});
|
|
this._updateCanTrickle();
|
|
if (this._closed) {
|
|
return;
|
|
}
|
|
}
|
|
this._sanityCheckSdp(sdp);
|
|
const p = this._getPermission();
|
|
await new Promise((resolve, reject) => {
|
|
this._onSetDescriptionSuccess = resolve;
|
|
this._onSetDescriptionFailure = reject;
|
|
this._pc.setRemoteDescription(this._actions[type], sdp);
|
|
});
|
|
await p;
|
|
this._updateCanTrickle();
|
|
})();
|
|
|
|
if (type != "rollback") {
|
|
// Do setRemoteDescription and identity validation in parallel
|
|
await this._validateIdentity(sdp);
|
|
}
|
|
await haveSetRemote;
|
|
});
|
|
}
|
|
|
|
setIdentityProvider(provider, { protocol, usernameHint, peerIdentity } = {}) {
|
|
this._checkClosed();
|
|
peerIdentity = peerIdentity || this._pc.peerIdentity;
|
|
this._localIdp.setIdentityProvider(
|
|
provider,
|
|
protocol,
|
|
usernameHint,
|
|
peerIdentity
|
|
);
|
|
}
|
|
|
|
async _getIdentityAssertion() {
|
|
await this._certificateReady;
|
|
return this._localIdp.getIdentityAssertion(
|
|
this._pc.fingerprint,
|
|
this._documentPrincipal.origin
|
|
);
|
|
}
|
|
|
|
getIdentityAssertion() {
|
|
this._checkClosed();
|
|
return this._win.Promise.resolve(
|
|
this._chain(() => this._getIdentityAssertion())
|
|
);
|
|
}
|
|
|
|
get canTrickleIceCandidates() {
|
|
return this._canTrickle;
|
|
}
|
|
|
|
_updateCanTrickle() {
|
|
let containsTrickle = section => {
|
|
let lines = section.toLowerCase().split(/(?:\r\n?|\n)/);
|
|
return lines.some(line => {
|
|
let prefix = "a=ice-options:";
|
|
if (line.substring(0, prefix.length) !== prefix) {
|
|
return false;
|
|
}
|
|
let tokens = line.substring(prefix.length).split(" ");
|
|
return tokens.some(x => x === "trickle");
|
|
});
|
|
};
|
|
|
|
let desc = null;
|
|
try {
|
|
// The getter for remoteDescription can throw if the pc is closed.
|
|
desc = this.remoteDescription;
|
|
} catch (e) {}
|
|
if (!desc) {
|
|
this._canTrickle = null;
|
|
return;
|
|
}
|
|
|
|
let sections = desc.sdp.split(/(?:\r\n?|\n)m=/);
|
|
let topSection = sections.shift();
|
|
this._canTrickle =
|
|
containsTrickle(topSection) || sections.every(containsTrickle);
|
|
}
|
|
|
|
addIceCandidate(cand, onSucc, onErr) {
|
|
if (
|
|
cand.candidate != "" &&
|
|
cand.sdpMid == null &&
|
|
cand.sdpMLineIndex == null
|
|
) {
|
|
throw new this._win.TypeError(
|
|
"Cannot add a candidate without specifying either sdpMid or sdpMLineIndex"
|
|
);
|
|
}
|
|
return this._auto(onSucc, onErr, () => this._addIceCandidate(cand));
|
|
}
|
|
|
|
async _addIceCandidate({
|
|
candidate,
|
|
sdpMid,
|
|
sdpMLineIndex,
|
|
usernameFragment,
|
|
}) {
|
|
this._checkClosed();
|
|
return this._chain(async () => {
|
|
if (
|
|
!this._pc.pendingRemoteDescription.length &&
|
|
!this._pc.currentRemoteDescription.length
|
|
) {
|
|
throw new this._win.DOMException(
|
|
"No remoteDescription.",
|
|
"InvalidStateError"
|
|
);
|
|
}
|
|
return new Promise((resolve, reject) => {
|
|
this._onAddIceCandidateSuccess = resolve;
|
|
this._onAddIceCandidateError = reject;
|
|
this._pc.addIceCandidate(
|
|
candidate,
|
|
sdpMid || "",
|
|
usernameFragment || "",
|
|
sdpMLineIndex
|
|
);
|
|
});
|
|
});
|
|
}
|
|
|
|
restartIce() {
|
|
this._pc.restartIce();
|
|
}
|
|
|
|
addStream(stream) {
|
|
stream.getTracks().forEach(track => this.addTrack(track, stream));
|
|
}
|
|
|
|
addTrack(track, ...streams) {
|
|
this._checkClosed();
|
|
|
|
if (
|
|
this.getTransceivers().some(
|
|
transceiver => transceiver.sender.track == track
|
|
)
|
|
) {
|
|
throw new this._win.DOMException(
|
|
"This track is already set on a sender.",
|
|
"InvalidAccessError"
|
|
);
|
|
}
|
|
|
|
let transceiver = this.getTransceivers().find(transceiver => {
|
|
return (
|
|
transceiver.sender.track == null &&
|
|
transceiver.getKind() == track.kind &&
|
|
!transceiver.stopped &&
|
|
!transceiver.hasBeenUsedToSend()
|
|
);
|
|
});
|
|
|
|
if (transceiver) {
|
|
transceiver.sender.setTrack(track);
|
|
transceiver.sender.setStreams(streams);
|
|
if (transceiver.direction == "recvonly") {
|
|
transceiver.setDirectionInternal("sendrecv");
|
|
} else if (transceiver.direction == "inactive") {
|
|
transceiver.setDirectionInternal("sendonly");
|
|
}
|
|
} else {
|
|
transceiver = this._addTransceiverNoEvents(track, {
|
|
streams,
|
|
direction: "sendrecv",
|
|
});
|
|
}
|
|
|
|
transceiver.setAddTrackMagic();
|
|
this.updateNegotiationNeeded();
|
|
return transceiver.sender;
|
|
}
|
|
|
|
removeTrack(sender) {
|
|
this._checkClosed();
|
|
|
|
if (!this._pc.createdSender(sender)) {
|
|
throw new this._win.DOMException(
|
|
"This sender was not created by this PeerConnection",
|
|
"InvalidAccessError"
|
|
);
|
|
}
|
|
|
|
let transceiver = this.getTransceivers().find(
|
|
transceiver => !transceiver.stopped && transceiver.sender == sender
|
|
);
|
|
|
|
// If the transceiver was removed due to rollback, let it slide.
|
|
if (!transceiver || !sender.track) {
|
|
return;
|
|
}
|
|
|
|
sender.setTrack(null);
|
|
if (transceiver.direction == "sendrecv") {
|
|
transceiver.setDirectionInternal("recvonly");
|
|
} else if (transceiver.direction == "sendonly") {
|
|
transceiver.setDirectionInternal("inactive");
|
|
}
|
|
|
|
this.updateNegotiationNeeded();
|
|
}
|
|
|
|
_addTransceiverNoEvents(sendTrackOrKind, init) {
|
|
let sendTrack = null;
|
|
let kind;
|
|
if (typeof sendTrackOrKind == "string") {
|
|
kind = sendTrackOrKind;
|
|
switch (kind) {
|
|
case "audio":
|
|
case "video":
|
|
break;
|
|
default:
|
|
throw new this._win.TypeError("Invalid media kind");
|
|
}
|
|
} else {
|
|
sendTrack = sendTrackOrKind;
|
|
kind = sendTrack.kind;
|
|
}
|
|
|
|
return this._pc.addTransceiver(init, kind, sendTrack);
|
|
}
|
|
|
|
addTransceiver(sendTrackOrKind, init) {
|
|
this._checkClosed();
|
|
let transceiver = this._addTransceiverNoEvents(sendTrackOrKind, init);
|
|
this.updateNegotiationNeeded();
|
|
return transceiver;
|
|
}
|
|
|
|
updateNegotiationNeeded() {
|
|
this._pc.updateNegotiationNeeded();
|
|
}
|
|
|
|
close() {
|
|
if (this._closed) {
|
|
return;
|
|
}
|
|
this._closed = true;
|
|
this.changeIceConnectionState("closed");
|
|
if (this._localIdp) {
|
|
this._localIdp.close();
|
|
}
|
|
if (this._remoteIdp) {
|
|
this._remoteIdp.close();
|
|
}
|
|
this._pc.close();
|
|
this._suppressEvents = true;
|
|
}
|
|
|
|
getLocalStreams() {
|
|
this._checkClosed();
|
|
let localStreams = new Set();
|
|
this.getTransceivers().forEach(transceiver => {
|
|
transceiver.sender.getStreams().forEach(stream => {
|
|
localStreams.add(stream);
|
|
});
|
|
});
|
|
return [...localStreams.values()];
|
|
}
|
|
|
|
getRemoteStreams() {
|
|
this._checkClosed();
|
|
return this._pc.getRemoteStreams();
|
|
}
|
|
|
|
getSenders() {
|
|
return this.getTransceivers()
|
|
.filter(transceiver => !transceiver.stopped)
|
|
.map(transceiver => transceiver.sender);
|
|
}
|
|
|
|
getReceivers() {
|
|
return this.getTransceivers()
|
|
.filter(transceiver => !transceiver.stopped)
|
|
.map(transceiver => transceiver.receiver);
|
|
}
|
|
|
|
mozSetPacketCallback(callback) {
|
|
this._onPacket = callback;
|
|
}
|
|
|
|
mozEnablePacketDump(level, type, sending) {
|
|
this._pc.enablePacketDump(level, type, sending);
|
|
}
|
|
|
|
mozDisablePacketDump(level, type, sending) {
|
|
this._pc.disablePacketDump(level, type, sending);
|
|
}
|
|
|
|
getTransceivers() {
|
|
return this._pc.getTransceivers();
|
|
}
|
|
|
|
get localDescription() {
|
|
return this.pendingLocalDescription || this.currentLocalDescription;
|
|
}
|
|
|
|
get currentLocalDescription() {
|
|
this._checkClosed();
|
|
const sdp = this._pc.currentLocalDescription;
|
|
if (sdp.length == 0) {
|
|
return null;
|
|
}
|
|
const type = this._pc.currentOfferer ? "offer" : "answer";
|
|
return new this._win.RTCSessionDescription({ type, sdp });
|
|
}
|
|
|
|
get pendingLocalDescription() {
|
|
this._checkClosed();
|
|
const sdp = this._pc.pendingLocalDescription;
|
|
if (sdp.length == 0) {
|
|
return null;
|
|
}
|
|
const type = this._pc.pendingOfferer ? "offer" : "answer";
|
|
return new this._win.RTCSessionDescription({ type, sdp });
|
|
}
|
|
|
|
get remoteDescription() {
|
|
return this.pendingRemoteDescription || this.currentRemoteDescription;
|
|
}
|
|
|
|
get currentRemoteDescription() {
|
|
this._checkClosed();
|
|
const sdp = this._pc.currentRemoteDescription;
|
|
if (sdp.length == 0) {
|
|
return null;
|
|
}
|
|
const type = this._pc.currentOfferer ? "answer" : "offer";
|
|
return new this._win.RTCSessionDescription({ type, sdp });
|
|
}
|
|
|
|
get pendingRemoteDescription() {
|
|
this._checkClosed();
|
|
const sdp = this._pc.pendingRemoteDescription;
|
|
if (sdp.length == 0) {
|
|
return null;
|
|
}
|
|
const type = this._pc.pendingOfferer ? "answer" : "offer";
|
|
return new this._win.RTCSessionDescription({ type, sdp });
|
|
}
|
|
|
|
get peerIdentity() {
|
|
return this._peerIdentity;
|
|
}
|
|
get idpLoginUrl() {
|
|
return this._localIdp.idpLoginUrl;
|
|
}
|
|
get id() {
|
|
return this._pc.id;
|
|
}
|
|
set id(s) {
|
|
this._pc.id = s;
|
|
}
|
|
get iceGatheringState() {
|
|
return this._pc.iceGatheringState;
|
|
}
|
|
get iceConnectionState() {
|
|
return this._iceConnectionState;
|
|
}
|
|
|
|
get signalingState() {
|
|
// checking for our local pc closed indication
|
|
// before invoking the pc methods.
|
|
if (this._closed) {
|
|
return "closed";
|
|
}
|
|
return this._pc.signalingState;
|
|
}
|
|
|
|
handleIceGatheringStateChange() {
|
|
_globalPCList.notifyLifecycleObservers(this, "icegatheringstatechange");
|
|
this.dispatchEvent(new this._win.Event("icegatheringstatechange"));
|
|
if (this.iceGatheringState === "complete") {
|
|
this.dispatchEvent(
|
|
new this._win.RTCPeerConnectionIceEvent("icecandidate", {
|
|
candidate: null,
|
|
})
|
|
);
|
|
}
|
|
}
|
|
|
|
changeIceConnectionState(state) {
|
|
if (state != this._iceConnectionState) {
|
|
this._iceConnectionState = state;
|
|
_globalPCList.notifyLifecycleObservers(this, "iceconnectionstatechange");
|
|
if (!this._closed) {
|
|
this.dispatchEvent(new this._win.Event("iceconnectionstatechange"));
|
|
}
|
|
}
|
|
}
|
|
|
|
getStats(selector, onSucc, onErr) {
|
|
if (selector !== null) {
|
|
let matchingSenders = this.getSenders().filter(s => s.track === selector);
|
|
let matchingReceivers = this.getReceivers().filter(
|
|
r => r.track === selector
|
|
);
|
|
|
|
if (matchingSenders.length + matchingReceivers.length != 1) {
|
|
throw new this._win.DOMException(
|
|
"track must be associated with a unique sender or receiver, but " +
|
|
" is associated with " +
|
|
matchingSenders.length +
|
|
" senders and " +
|
|
matchingReceivers.length +
|
|
" receivers.",
|
|
"InvalidAccessError"
|
|
);
|
|
}
|
|
}
|
|
|
|
return this._auto(onSucc, onErr, () => this._pc.getStats(selector));
|
|
}
|
|
|
|
createDataChannel(
|
|
label,
|
|
{
|
|
maxRetransmits,
|
|
ordered,
|
|
negotiated,
|
|
id = null,
|
|
maxRetransmitTime,
|
|
maxPacketLifeTime,
|
|
protocol,
|
|
} = {}
|
|
) {
|
|
this._checkClosed();
|
|
this._pcTelemetry.recordDataChannelInit(
|
|
maxRetransmitTime,
|
|
maxPacketLifeTime
|
|
);
|
|
|
|
if (maxPacketLifeTime === undefined) {
|
|
maxPacketLifeTime = maxRetransmitTime;
|
|
}
|
|
|
|
if (maxRetransmitTime !== undefined) {
|
|
this.logWarning(
|
|
"Use maxPacketLifeTime instead of deprecated maxRetransmitTime which will stop working soon in createDataChannel!"
|
|
);
|
|
}
|
|
|
|
if (protocol.length > 32767) {
|
|
// At least 65536/2 UTF-16 characters. UTF-8 might be too long.
|
|
// Spec says to check how long |protocol| and |label| are in _bytes_. This
|
|
// is a little ambiguous. For now, examine the length of the utf-8 encoding.
|
|
const byteCounter = new TextEncoder("utf-8");
|
|
|
|
if (byteCounter.encode(protocol).length > 65535) {
|
|
throw new this._win.TypeError(
|
|
"protocol cannot be longer than 65535 bytes"
|
|
);
|
|
}
|
|
}
|
|
|
|
if (label.length > 32767) {
|
|
const byteCounter = new TextEncoder("utf-8");
|
|
if (byteCounter.encode(label).length > 65535) {
|
|
throw new this._win.TypeError(
|
|
"label cannot be longer than 65535 bytes"
|
|
);
|
|
}
|
|
}
|
|
|
|
if (!negotiated) {
|
|
id = null;
|
|
} else if (id === null) {
|
|
throw new this._win.TypeError("id is required when negotiated is true");
|
|
}
|
|
if (maxPacketLifeTime !== undefined && maxRetransmits !== undefined) {
|
|
throw new this._win.TypeError(
|
|
"Both maxPacketLifeTime and maxRetransmits cannot be provided"
|
|
);
|
|
}
|
|
if (id == 65535) {
|
|
throw new this._win.TypeError("id cannot be 65535");
|
|
}
|
|
// Must determine the type where we still know if entries are undefined.
|
|
let type;
|
|
if (maxPacketLifeTime !== undefined) {
|
|
type = Ci.IPeerConnection.kDataChannelPartialReliableTimed;
|
|
} else if (maxRetransmits !== undefined) {
|
|
type = Ci.IPeerConnection.kDataChannelPartialReliableRexmit;
|
|
} else {
|
|
type = Ci.IPeerConnection.kDataChannelReliable;
|
|
}
|
|
// Synchronous since it doesn't block.
|
|
let dataChannel;
|
|
try {
|
|
dataChannel = this._pc.createDataChannel(
|
|
label,
|
|
protocol,
|
|
type,
|
|
ordered,
|
|
maxPacketLifeTime,
|
|
maxRetransmits,
|
|
negotiated,
|
|
id
|
|
);
|
|
} catch (e) {
|
|
if (e.result != Cr.NS_ERROR_NOT_AVAILABLE) {
|
|
throw e;
|
|
}
|
|
|
|
const msg =
|
|
id === null ? "No available id could be generated" : "Id is in use";
|
|
throw new this._win.DOMException(msg, "OperationError");
|
|
}
|
|
|
|
// Spec says to only do this if this is the first DataChannel created,
|
|
// but the c++ code that does the "is negotiation needed" checking will
|
|
// only ever return true on the first one.
|
|
this.updateNegotiationNeeded();
|
|
|
|
return dataChannel;
|
|
}
|
|
}
|
|
setupPrototype(RTCPeerConnection, {
|
|
classID: PC_CID,
|
|
contractID: PC_CONTRACT,
|
|
QueryInterface: ChromeUtils.generateQI(["nsIDOMGlobalPropertyInitializer"]),
|
|
_actions: {
|
|
offer: Ci.IPeerConnection.kActionOffer,
|
|
answer: Ci.IPeerConnection.kActionAnswer,
|
|
pranswer: Ci.IPeerConnection.kActionPRAnswer,
|
|
rollback: Ci.IPeerConnection.kActionRollback,
|
|
},
|
|
});
|
|
|
|
// This is a separate class because we don't want to expose it to DOM.
|
|
|
|
class PeerConnectionObserver {
|
|
init(win) {
|
|
this._win = win;
|
|
}
|
|
|
|
__init(dompc) {
|
|
this._dompc = dompc._innerObject;
|
|
}
|
|
|
|
newError({ message, name }) {
|
|
return new this._dompc._win.DOMException(message, name);
|
|
}
|
|
|
|
dispatchEvent(event) {
|
|
this._dompc.dispatchEvent(event);
|
|
}
|
|
|
|
onCreateOfferSuccess(sdp) {
|
|
this._dompc._onCreateOfferSuccess(sdp);
|
|
}
|
|
|
|
onCreateOfferError(error) {
|
|
this._dompc._onCreateOfferFailure(this.newError(error));
|
|
}
|
|
|
|
onCreateAnswerSuccess(sdp) {
|
|
this._dompc._onCreateAnswerSuccess(sdp);
|
|
}
|
|
|
|
onCreateAnswerError(error) {
|
|
this._dompc._onCreateAnswerFailure(this.newError(error));
|
|
}
|
|
|
|
onSetDescriptionSuccess() {
|
|
this._dompc._onSetDescriptionSuccess();
|
|
}
|
|
|
|
onSetDescriptionError(error) {
|
|
this._dompc._onSetDescriptionFailure(this.newError(error));
|
|
}
|
|
|
|
onAddIceCandidateSuccess() {
|
|
this._dompc._onAddIceCandidateSuccess();
|
|
}
|
|
|
|
onAddIceCandidateError(error) {
|
|
this._dompc._onAddIceCandidateError(this.newError(error));
|
|
}
|
|
|
|
onIceCandidate(sdpMLineIndex, sdpMid, candidate, usernameFragment) {
|
|
let win = this._dompc._win;
|
|
if (candidate || sdpMid || usernameFragment) {
|
|
if (candidate.includes(" typ relay ")) {
|
|
this._dompc._iceGatheredRelayCandidates = true;
|
|
}
|
|
candidate = new win.RTCIceCandidate({
|
|
candidate,
|
|
sdpMid,
|
|
sdpMLineIndex,
|
|
usernameFragment,
|
|
});
|
|
}
|
|
this.dispatchEvent(
|
|
new win.RTCPeerConnectionIceEvent("icecandidate", { candidate })
|
|
);
|
|
}
|
|
|
|
// This method is primarily responsible for updating iceConnectionState.
|
|
// This state is defined in the WebRTC specification as follows:
|
|
//
|
|
// iceConnectionState:
|
|
// -------------------
|
|
// new Any of the RTCIceTransports are in the new state and none
|
|
// of them are in the checking, failed or disconnected state.
|
|
//
|
|
// checking Any of the RTCIceTransports are in the checking state and
|
|
// none of them are in the failed or disconnected state.
|
|
//
|
|
// connected All RTCIceTransports are in the connected, completed or
|
|
// closed state and at least one of them is in the connected
|
|
// state.
|
|
//
|
|
// completed All RTCIceTransports are in the completed or closed state
|
|
// and at least one of them is in the completed state.
|
|
//
|
|
// failed Any of the RTCIceTransports are in the failed state.
|
|
//
|
|
// disconnected Any of the RTCIceTransports are in the disconnected state
|
|
// and none of them are in the failed state.
|
|
//
|
|
// closed All of the RTCIceTransports are in the closed state.
|
|
|
|
handleIceConnectionStateChange(iceConnectionState) {
|
|
let pc = this._dompc;
|
|
if (pc.iceConnectionState === iceConnectionState) {
|
|
return;
|
|
}
|
|
|
|
if (iceConnectionState === "failed") {
|
|
if (!pc._hasStunServer) {
|
|
pc.logError(
|
|
"ICE failed, add a STUN server and see about:webrtc for more details"
|
|
);
|
|
} else if (!pc._hasTurnServer) {
|
|
pc.logError(
|
|
"ICE failed, add a TURN server and see about:webrtc for more details"
|
|
);
|
|
} else if (pc._hasTurnServer && !pc._iceGatheredRelayCandidates) {
|
|
pc.logError(
|
|
"ICE failed, your TURN server appears to be broken, see about:webrtc for more details"
|
|
);
|
|
} else {
|
|
pc.logError("ICE failed, see about:webrtc for more details");
|
|
}
|
|
}
|
|
|
|
pc.changeIceConnectionState(iceConnectionState);
|
|
}
|
|
|
|
onStateChange(state) {
|
|
if (!this._dompc) {
|
|
return;
|
|
}
|
|
|
|
if (state == "SignalingState") {
|
|
this.dispatchEvent(new this._win.Event("signalingstatechange"));
|
|
return;
|
|
}
|
|
|
|
if (!this._dompc._pc) {
|
|
return;
|
|
}
|
|
|
|
switch (state) {
|
|
case "IceConnectionState":
|
|
let connState = this._dompc._pc.iceConnectionState;
|
|
this._dompc._queueTaskWithClosedCheck(() => {
|
|
this.handleIceConnectionStateChange(connState);
|
|
});
|
|
break;
|
|
|
|
case "IceGatheringState":
|
|
this._dompc.handleIceGatheringStateChange();
|
|
break;
|
|
|
|
default:
|
|
this._dompc.logWarning("Unhandled state type: " + state);
|
|
break;
|
|
}
|
|
}
|
|
|
|
onTransceiverNeeded(kind, transceiverImpl) {
|
|
this._dompc._onTransceiverNeeded(kind, transceiverImpl);
|
|
}
|
|
|
|
notifyDataChannel(channel) {
|
|
this.dispatchEvent(
|
|
new this._dompc._win.RTCDataChannelEvent("datachannel", { channel })
|
|
);
|
|
}
|
|
|
|
fireTrackEvent(receiver, streams) {
|
|
const pc = this._dompc;
|
|
const transceiver = pc.getTransceivers().find(t => t.receiver == receiver);
|
|
if (!transceiver) {
|
|
return;
|
|
}
|
|
const track = receiver.track;
|
|
this.dispatchEvent(
|
|
new this._win.RTCTrackEvent("track", {
|
|
transceiver,
|
|
receiver,
|
|
track,
|
|
streams,
|
|
})
|
|
);
|
|
// Fire legacy event as well for a little bit.
|
|
this.dispatchEvent(
|
|
new this._win.MediaStreamTrackEvent("addtrack", { track })
|
|
);
|
|
}
|
|
|
|
fireStreamEvent(stream) {
|
|
const ev = new this._win.MediaStreamEvent("addstream", { stream });
|
|
this.dispatchEvent(ev);
|
|
}
|
|
|
|
fireNegotiationNeededEvent() {
|
|
this.dispatchEvent(new this._win.Event("negotiationneeded"));
|
|
}
|
|
|
|
onPacket(level, type, sending, packet) {
|
|
var pc = this._dompc;
|
|
if (pc._onPacket) {
|
|
pc._onPacket(level, type, sending, packet);
|
|
}
|
|
}
|
|
}
|
|
setupPrototype(PeerConnectionObserver, {
|
|
classID: PC_OBS_CID,
|
|
contractID: PC_OBS_CONTRACT,
|
|
QueryInterface: ChromeUtils.generateQI(["nsIDOMGlobalPropertyInitializer"]),
|
|
});
|
|
|
|
class RTCPeerConnectionStatic {
|
|
init(win) {
|
|
this._winID = win.windowGlobalChild.innerWindowId;
|
|
}
|
|
|
|
registerPeerConnectionLifecycleCallback(cb) {
|
|
_globalPCList._registerPeerConnectionLifecycleCallback(this._winID, cb);
|
|
}
|
|
}
|
|
setupPrototype(RTCPeerConnectionStatic, {
|
|
classID: PC_STATIC_CID,
|
|
contractID: PC_STATIC_CONTRACT,
|
|
QueryInterface: ChromeUtils.generateQI(["nsIDOMGlobalPropertyInitializer"]),
|
|
});
|
|
|
|
class CreateOfferRequest {
|
|
constructor(windowID, innerWindowID, callID, isSecure) {
|
|
Object.assign(this, { windowID, innerWindowID, callID, isSecure });
|
|
}
|
|
}
|
|
setupPrototype(CreateOfferRequest, {
|
|
classID: PC_COREQUEST_CID,
|
|
contractID: PC_COREQUEST_CONTRACT,
|
|
QueryInterface: ChromeUtils.generateQI([]),
|
|
});
|
|
|
|
var EXPORTED_SYMBOLS = [
|
|
"GlobalPCList",
|
|
"RTCIceCandidate",
|
|
"RTCSessionDescription",
|
|
"RTCPeerConnection",
|
|
"RTCPeerConnectionStatic",
|
|
"PeerConnectionObserver",
|
|
"CreateOfferRequest",
|
|
];
|