/
janus.js
1550 lines (1503 loc) · 53.4 KB
/
janus.js
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// List of sessions
Janus.sessions = {};
// Screensharing Chrome Extension ID
Janus.extensionId = "hapfgfdkleiggjjpfpenajgdnfckjpaj";
Janus.isExtensionEnabled = function() {
if(window.navigator.userAgent.match('Chrome')) {
var chromever = parseInt(window.navigator.userAgent.match(/Chrome\/(.*) /)[1], 10);
var maxver = 33;
if(window.navigator.userAgent.match('Linux'))
maxver = 35; // "known" crash in chrome 34 and 35 on linux
if(chromever >= 26 && chromever <= maxver) {
// Older versions of Chrome don't support this extension-based approach, so lie
return true;
}
return ($('#janus-extension-installed').length > 0);
} else {
// Firefox of others, no need for the extension (but this doesn't mean it will work)
return true;
}
};
Janus.noop = function() {};
// Initialization
Janus.init = function(options) {
options = options || {};
options.callback = (typeof options.callback == "function") ? options.callback : Janus.noop;
if(Janus.initDone === true) {
// Already initialized
options.callback();
} else {
if(typeof console == "undefined" || typeof console.log == "undefined")
console = { log: function() {} };
// Console log (debugging disabled by default)
Janus.log = (options.debug === true) ? console.log.bind(console) : Janus.noop;
Janus.log("Initializing library");
Janus.initDone = true;
// Detect tab close
window.onbeforeunload = function() {
Janus.log("Closing window");
for(var s in Janus.sessions) {
Janus.log("Destroying session " + s);
Janus.sessions[s].destroy();
}
}
// Helper to add external JavaScript sources
function addJs(src) {
if(src === 'jquery.min.js') {
if(window.jQuery) {
// Already loaded
options.callback();
return;
}
}
var oHead = document.getElementsByTagName('head').item(0);
var oScript = document.createElement("script");
oScript.type = "text/javascript";
oScript.src = src;
oScript.onload = function() {
Janus.log("Library " + src + " loaded");
if(src === 'jquery.min.js') {
options.callback();
}
}
oHead.appendChild(oScript);
};
//addJs('adapter.js');
addJs('jquery.min.js');
}
};
// Helper method to check whether WebRTC is supported by this browser
Janus.isWebrtcSupported = function() {
if(RTCPeerConnection === null || getUserMedia === null) {
return false;
}
return true;
};
function Janus(gatewayCallbacks) {
if(Janus.initDone === undefined) {
gatewayCallbacks.error("Library not initialized");
return {};
}
if(!Janus.isWebrtcSupported()) {
gatewayCallbacks.error("WebRTC not supported by this browser");
return {};
}
Janus.log("Library initialized: " + Janus.initDone);
gatewayCallbacks = gatewayCallbacks || {};
gatewayCallbacks.success = (typeof gatewayCallbacks.success == "function") ? gatewayCallbacks.success : jQuery.noop;
gatewayCallbacks.error = (typeof gatewayCallbacks.error == "function") ? gatewayCallbacks.error : jQuery.noop;
gatewayCallbacks.destroyed = (typeof gatewayCallbacks.destroyed == "function") ? gatewayCallbacks.destroyed : jQuery.noop;
if(gatewayCallbacks.server === null || gatewayCallbacks.server === undefined) {
gatewayCallbacks.error("Invalid gateway url");
return {};
}
var websockets = false;
var ws = null;
var servers = null, serversIndex = 0;
var server = gatewayCallbacks.server;
if($.isArray(server)) {
Janus.log("Multiple servers provided (" + server.length + "), will use the first that works");
server = null;
servers = gatewayCallbacks.server;
Janus.log(servers);
} else {
if(server.indexOf("ws") === 0) {
websockets = true;
Janus.log("Using WebSockets to contact Janus");
} else {
websockets = false;
Janus.log("Using REST API to contact Janus");
}
Janus.log(server);
}
var iceServers = gatewayCallbacks.iceServers;
if(iceServers === undefined || iceServers === null)
iceServers = [{"url": "stun:stun.l.google.com:19302"}];
var ipv6Support = gatewayCallbacks.ipv6;
if(ipv6Support === undefined || ipv6Support === null)
ipv6Support = false;
var maxev = null;
if(gatewayCallbacks.max_poll_events !== undefined && gatewayCallbacks.max_poll_events !== null)
maxev = gatewayCallbacks.max_poll_events;
if(maxev < 1)
maxev = 1;
var connected = false;
var sessionId = null;
var pluginHandles = {};
var that = this;
var retries = 0;
var transactions = {};
createSession(gatewayCallbacks);
// Public methods
this.getServer = function() { return server; };
this.isConnected = function() { return connected; };
this.getSessionId = function() { return sessionId; };
this.destroy = function(callbacks) { destroySession(callbacks); };
this.attach = function(callbacks) { createHandle(callbacks); };
// Private method to create random identifiers (e.g., transaction)
function randomString(len) {
charSet = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
var randomString = '';
for (var i = 0; i < len; i++) {
var randomPoz = Math.floor(Math.random() * charSet.length);
randomString += charSet.substring(randomPoz,randomPoz+1);
}
return randomString;
}
function eventHandler() {
if(sessionId == null)
return;
Janus.log('Long poll...');
if(!connected) {
Janus.log("Is the gateway down? (connected=false)");
return;
}
//Refresh
$.ajax({
type: 'POST',
url: 'janus.php',
cache: false,
async:true,
timeout: 60000,
data:{action:'Refresh',sessionId:sessionId},
success: handleEvent,
error: function(XMLHttpRequest, textStatus, errorThrown) {
Janus.log(textStatus + ": " + errorThrown);
//~ clearTimeout(timeoutTimer);
retries++;
if(retries > 20) {
// Did we just lose the gateway? :-(
connected = false;
gatewayCallbacks.error("Lost connection to the gateway (is it down?)");
return;
}
eventHandler();
},
dataType: "json"
});
}
// Private event handler: this will trigger plugin callbacks, if set
function handleEvent(json) {
retries = 0;
if(!websockets && sessionId !== undefined && sessionId !== null)
setTimeout(eventHandler, 200);
Janus.log("Got event on session " + sessionId);
Janus.log(json);
if(!websockets && $.isArray(json)) {
// We got an array: it means we passed a maxev > 1, iterate on all objects
for(var i=0; i<json.length; i++) {
handleEvent(json[i]);
}
return;
}
if(json["janus"] === "keepalive") {
// Nothing happened
return;
} else if(json["janus"] === "ack") {
// Just an ack, we can probably ignore
var transaction = json["transaction"];
if(transaction !== null && transaction !== undefined) {
var reportSuccess = transactions[transaction];
if(reportSuccess !== null && reportSuccess !== undefined) {
reportSuccess(json);
}
delete transactions[transaction];
}
return;
} else if(json["janus"] === "success") {
// Success!
var transaction = json["transaction"];
if(transaction !== null && transaction !== undefined) {
var reportSuccess = transactions[transaction];
if(reportSuccess !== null && reportSuccess !== undefined) {
reportSuccess(json);
}
delete transactions[transaction];
}
return;
} else if(json["janus"] === "webrtcup") {
// The PeerConnection with the gateway is up! FIXME Should we notify this?
return;
} else if(json["janus"] === "hangup") {
// A plugin asked the core to hangup a PeerConnection on one of our handles
var sender = json["sender"];
if(sender === undefined || sender === null) {
Janus.log("Missing sender...");
return;
}
var pluginHandle = pluginHandles[sender];
if(pluginHandle === undefined || pluginHandle === null) {
Janus.log("This handle is not attached to this session");
return;
}
pluginHandle.hangup();
} else if(json["janus"] === "detached") {
// A plugin asked the core to detach one of our handles
var sender = json["sender"];
if(sender === undefined || sender === null) {
Janus.log("Missing sender...");
return;
}
var pluginHandle = pluginHandles[sender];
if(pluginHandle === undefined || pluginHandle === null) {
Janus.log("This handle is not attached to this session");
return;
}
pluginHandle.ondetached();
pluginHandle.detach();
} else if(json["janus"] === "error") {
// Oops, something wrong happened
Janus.log("Ooops: " + json["error"].code + " " + json["error"].reason); // FIXME
var transaction = json["transaction"];
if(transaction !== null && transaction !== undefined) {
var reportSuccess = transactions[transaction];
if(reportSuccess !== null && reportSuccess !== undefined) {
reportSuccess(json);
}
delete transactions[transaction];
}
return;
} else if(json["janus"] === "event") {
var sender = json["sender"];
if(sender === undefined || sender === null) {
Janus.log("Missing sender...");
return;
}
var plugindata = json["plugindata"];
if(plugindata === undefined || plugindata === null) {
Janus.log("Missing plugindata...");
return;
}
Janus.log(" -- Event is coming from " + sender + " (" + plugindata["plugin"] + ")");
var data = plugindata["data"];
Janus.log(data);
var pluginHandle = pluginHandles[sender];
if(pluginHandle === undefined || pluginHandle === null) {
Janus.log("This handle is not attached to this session");
return;
}
var jsep = json["jsep"];
if(jsep !== undefined && jsep !== null) {
Janus.log("Handling SDP as well...");
Janus.log(jsep);
}
var callback = pluginHandle.onmessage;
if(callback !== null && callback !== undefined) {
Janus.log("Notifying application...");
// Send to callback specified when attaching plugin handle
callback(data, jsep);
} else {
// Send to generic callback (?)
Janus.log("No provided notification callback");
}
} else {
Janus.log("Unknown message '" + json["janus"] + "'");
}
}
// Private method to create a session
function createSession(callbacks) {
if(server === null && $.isArray(servers)) {
// We still need to find a working server from the list we were given
server = servers[serversIndex];
if(server.indexOf("ws") === 0) {
websockets = true;
Janus.log("Server #" + (serversIndex+1) + ": trying WebSockets to contact Janus");
} else {
websockets = false;
Janus.log("Server #" + (serversIndex+1) + ": trying REST API to contact Janus");
}
Janus.log(server);
}
$.ajax({
type: 'POST',
url: 'janus.php',
cache: false,
async:true,
data: {action:'CreateSession'},
success: function(json) {
console.log(json);
//var json = $.parseJSON(json);
console.log(json);
Janus.log("Create session:");
Janus.log(json);
if(json["janus"] !== "success") {
Janus.log("Ooops: " + json["error"].code + " " + json["error"].reason); // FIXME
callbacks.error(json["error"].reason);
return;
}
connected = true;
sessionId = json.data["id"];
Janus.log("Created session: " + sessionId);
Janus.sessions[sessionId] = that;
eventHandler();
callbacks.success();
},
error: function(XMLHttpRequest, textStatus, errorThrown) {
Janus.log(textStatus + ": " + errorThrown); // FIXME
if($.isArray(servers)) {
serversIndex++;
if(serversIndex == servers.length) {
// We tried all the servers the user gave us and they all failed
callbacks.error("Error connecting to any of the provided Janus servers: Is the gateway down?");
return;
}
// Let's try the next server
server = null;
setTimeout(function() { createSession(callbacks); }, 200);
return;
}
if(errorThrown === "")
callbacks.error(textStatus + ": Is the gateway down?");
else
callbacks.error(textStatus + ": " + errorThrown);
},
dataType: "json"
});
}
// Private method to destroy a session
function destroySession(callbacks, syncRequest) {
syncRequest = (syncRequest === true);
Janus.log("Destroying session " + sessionId + " (sync=" + syncRequest + ")");
callbacks = callbacks || {};
// FIXME This method triggers a success even when we fail
callbacks.success = (typeof callbacks.success == "function") ? callbacks.success : jQuery.noop;
if(!connected) {
Janus.log("Is the gateway down? (connected=false)");
callbacks.success();
return;
}
if(sessionId === undefined || sessionId === null) {
Janus.log("No session to destroy");
callbacks.success();
gatewayCallbacks.destroyed();
return;
}
delete Janus.sessions[sessionId];
// Destroy all handles first
for(ph in pluginHandles) {
var phv = pluginHandles[ph];
Janus.log("Destroying handle " + phv.id + " (" + phv.plugin + ")");
destroyHandle(phv.id, null, syncRequest);
}
$.ajax({
type: 'POST',
url: 'janus.php',
cache: false,
data: {action:'destroySession',sessionId:sessionId},
async: true, // Sometimes we need false here, or destroying in onbeforeunload won't work
success: function(json) {
//var json = $.parseJSON(json);
Janus.log("Destroyed session:");
Janus.log(json);
sessionId = null;
connected = false;
if(json["janus"] !== "success") {
Janus.log("Ooops: " + json["error"].code + " " + json["error"].reason); // FIXME
}
callbacks.success();
gatewayCallbacks.destroyed();
},
error: function(XMLHttpRequest, textStatus, errorThrown) {
Janus.log(textStatus + ": " + errorThrown); // FIXME
// Reset everything anyway
sessionId = null;
connected = false;
callbacks.success();
gatewayCallbacks.destroyed();
},
dataType: "json"
});
}
// Private method to create a plugin handle
function createHandle(callbacks) {
callbacks = callbacks || {};
callbacks.success = (typeof callbacks.success == "function") ? callbacks.success : jQuery.noop;
callbacks.error = (typeof callbacks.error == "function") ? callbacks.error : jQuery.noop;
callbacks.consentDialog = (typeof callbacks.consentDialog == "function") ? callbacks.consentDialog : jQuery.noop;
callbacks.onmessage = (typeof callbacks.onmessage == "function") ? callbacks.onmessage : jQuery.noop;
callbacks.onlocalstream = (typeof callbacks.onlocalstream == "function") ? callbacks.onlocalstream : jQuery.noop;
callbacks.onremotestream = (typeof callbacks.onremotestream == "function") ? callbacks.onremotestream : jQuery.noop;
callbacks.ondata = (typeof callbacks.ondata == "function") ? callbacks.ondata : jQuery.noop;
callbacks.ondataopen = (typeof callbacks.ondataopen == "function") ? callbacks.ondataopen : jQuery.noop;
callbacks.oncleanup = (typeof callbacks.oncleanup == "function") ? callbacks.oncleanup : jQuery.noop;
callbacks.ondetached = (typeof callbacks.ondetached == "function") ? callbacks.ondetached : jQuery.noop;
if(!connected) {
Janus.log("Is the gateway down? (connected=false)");
callbacks.error("Is the gateway down? (connected=false)");
return;
}
var plugin = callbacks.plugin;
if(plugin === undefined || plugin === null) {
Janus.log("Invalid plugin");
callbacks.error("Invalid plugin");
return;
}
//alert(sessionId);alert(plugin);
$.ajax({
type: 'POST',
url: 'janus.php',
async:true,
cache: false,
data: {action:'createHandle',sessionId:sessionId,plugin:plugin},
success: function(json) {
//var json = $.parseJSON(json);
Janus.log("Create handle:");
Janus.log(json);
var handleId = json.data["id"];
if(json["janus"] !== "success") {
Janus.log("Ooops: " + json["error"].code + " " + json["error"].reason); // FIXME
callbacks.error("Ooops: " + json["error"].code + " " + json["error"].reason);
return;
}
var handleId = json.data["id"];
Janus.log("Created handle: " + handleId);
var pluginHandle =
{
session : that,
plugin : plugin,
id : handleId,
webrtcStuff : {
started : false,
myStream : null,
remoteStream : null,
mySdp : null,
pc : null,
dataChannel : null,
dtmfSender : null,
trickle : true,
iceDone : false,
sdpSent : false,
volume : {
value : null,
timer : null
},
bitrate : {
value : null,
bsnow : null,
bsbefore : null,
tsnow : null,
tsbefore : null,
timer : null
}
},
getId : function() { return handleId; },
getPlugin : function() { return plugin; },
getVolume : function() { return getVolume(handleId); },
getBitrate : function() { return getBitrate(handleId); },
send : function(callbacks) { sendMessage(handleId, callbacks); },
data : function(callbacks) { sendData(handleId, callbacks); },
dtmf : function(callbacks) { sendDtmf(handleId, callbacks); },
consentDialog : callbacks.consentDialog,
onmessage : callbacks.onmessage,
createOffer : function(callbacks) { prepareWebrtc(handleId, callbacks); },
createAnswer : function(callbacks) { prepareWebrtc(handleId, callbacks); },
handleRemoteJsep : function(callbacks) { prepareWebrtcPeer(handleId, callbacks); },
onlocalstream : callbacks.onlocalstream,
onremotestream : callbacks.onremotestream,
ondata : callbacks.ondata,
ondataopen : callbacks.ondataopen,
oncleanup : callbacks.oncleanup,
ondetached : callbacks.ondetached,
hangup : function() { cleanupWebrtc(handleId); },
detach : function(callbacks) { destroyHandle(handleId, callbacks); }
}
pluginHandles[handleId] = pluginHandle;
callbacks.success(pluginHandle);
},
error: function(XMLHttpRequest, textStatus, errorThrown) {
Janus.log(textStatus + ": " + errorThrown); // FIXME
},
dataType: "json"
});
}
// Private method to send a message
function sendMessage(handleId, callbacks) {
callbacks = callbacks || {};
callbacks.success = (typeof callbacks.success == "function") ? callbacks.success : jQuery.noop;
callbacks.error = (typeof callbacks.error == "function") ? callbacks.error : jQuery.noop;
if(!connected) {
Janus.log("Is the gateway down? (connected=false)");
callbacks.error("Is the gateway down? (connected=false)");
return;
}
var message = callbacks.message;
var jsep = callbacks.jsep;
Janus.log("Sending message to plugin (handle=" + handleId + "):");
//Janus.log(request);
//alert(JSON.stringify(jsep));
$.ajax({
type: 'POST',
url: 'janus.php',
async:true,
cache: false,
data: {action:'sendMessage',jsep:JSON.stringify(jsep),sessionId:sessionId,handleId:handleId,message:JSON.stringify(message)},
success: function(json) {
//var json = $.parseJSON(json);
Janus.log(json);
Janus.log("Message sent!");
if(json["janus"] === "success") {
// We got a success, must have been a synchronous transaction
var plugindata = json["plugindata"];
if(plugindata === undefined || plugindata === null) {
Janus.log("Request succeeded, but missing plugindata...");
callbacks.success();
return;
}
Janus.log("Synchronous transaction successful (" + plugindata["plugin"] + ")");
var data = plugindata["data"];
Janus.log(data);
callbacks.success(data);
return;
} else if(json["janus"] !== "ack") {
// Not a success and not an ack, must be an error
if(json["error"] !== undefined && json["error"] !== null) {
Janus.log("Ooops: " + json["error"].code + " " + json["error"].reason); // FIXME
callbacks.error(json["error"].code + " " + json["error"].reason);
} else {
Janus.log("Unknown error"); // FIXME
callbacks.error("Unknown error");
}
return;
}
// If we got here, the plugin decided to handle the request asynchronously
callbacks.success();
},
error: function(XMLHttpRequest, textStatus, errorThrown) {
Janus.log(textStatus + ": " + errorThrown); // FIXME
callbacks.error(textStatus + ": " + errorThrown);
},
dataType: "json"
});
}
// Private method to send a trickle candidate
function sendTrickleCandidate(handleId, candidate) {
if(!connected) {
Janus.log("Is the gateway down? (connected=false)");
return;
}
Janus.log("Sending trickle candidate (handle=" + handleId + "):");
$.ajax({
type: 'POST',
url: 'janus.php',
async:true,
cache: false,
data: {action:'sendTrickleCandidate',sessionId:sessionId,handleId:handleId,candidate:JSON.stringify(candidate)},
success: function(json) {
console.log(JSON.stringify(candidate));
//var json = $.parseJSON(json);
Janus.log(json);
Janus.log("Candidate sent!");
if(json["janus"] !== "ack") {
Janus.log("Ooops: " + json["error"].code + " " + json["error"].reason); // FIXME
return;
}
},
error: function(XMLHttpRequest, textStatus, errorThrown) {
Janus.log(textStatus + ": " + errorThrown); // FIXME
},
dataType: "json"
});
}
// Private method to send a data channel message
function sendData(handleId, callbacks) {
callbacks = callbacks || {};
callbacks.success = (typeof callbacks.success == "function") ? callbacks.success : jQuery.noop;
callbacks.error = (typeof callbacks.error == "function") ? callbacks.error : jQuery.noop;
var pluginHandle = pluginHandles[handleId];
if(pluginHandle === null || pluginHandle === undefined ||
pluginHandle.webrtcStuff === null || pluginHandle.webrtcStuff === undefined) {
Janus.log("Invalid handle");
callbacks.error("Invalid handle");
return;
}
var config = pluginHandle.webrtcStuff;
var text = callbacks.text;
if(text === null || text === undefined) {
Janus.log("Invalid text");
callbacks.error("Invalid text");
return;
}
Janus.log("Sending string on data channel: " + text);
config.dataChannel.send(text);
callbacks.success();
}
// Private method to send a DTMF tone
function sendDtmf(handleId, callbacks) {
callbacks = callbacks || {};
callbacks.success = (typeof callbacks.success == "function") ? callbacks.success : jQuery.noop;
callbacks.error = (typeof callbacks.error == "function") ? callbacks.error : jQuery.noop;
var pluginHandle = pluginHandles[handleId];
if(pluginHandle === null || pluginHandle === undefined ||
pluginHandle.webrtcStuff === null || pluginHandle.webrtcStuff === undefined) {
Janus.log("Invalid handle");
callbacks.error("Invalid handle");
return;
}
var config = pluginHandle.webrtcStuff;
if(config.dtmfSender === null || config.dtmfSender === undefined) {
// Create the DTMF sender, if possible
if(config.myStream !== undefined && config.myStream !== null) {
var tracks = config.myStream.getAudioTracks();
if(tracks !== null && tracks !== undefined && tracks.length > 0) {
var local_audio_track = tracks[0];
config.dtmfSender = config.pc.createDTMFSender(local_audio_track);
Janus.log("Created DTMF Sender");
config.dtmfSender.ontonechange = function(tone) { Janus.log("Sent DTMF tone: " + tone.tone); };
}
}
if(config.dtmfSender === null || config.dtmfSender === undefined) {
Janus.log("Invalid DTMF configuration");
callbacks.error("Invalid DTMF configuration");
return;
}
}
var dtmf = callbacks.dtmf;
if(dtmf === null || dtmf === undefined) {
Janus.log("Invalid DTMF parameters");
callbacks.error("Invalid DTMF parameters");
return;
}
var tones = dtmf.tones;
if(tones === null || tones === undefined) {
Janus.log("Invalid DTMF string");
callbacks.error("Invalid DTMF string");
return;
}
var duration = dtmf.duration;
if(duration === null || duration === undefined)
duration = 500; // We choose 500ms as the default duration for a tone
var gap = dtmf.gap;
if(gap === null || gap === undefined)
gap = 50; // We choose 50ms as the default gap between tones
Janus.log("Sending DTMF string " + tones + " (duration " + duration + "ms, gap " + gap + "ms");
config.dtmfSender.insertDTMF(tones, duration, gap);
}
// Private method to destroy a plugin handle
function destroyHandle(handleId, callbacks, syncRequest) {
syncRequest = (syncRequest === true);
Janus.log("Destroying handle " + handleId + " (sync=" + syncRequest + ")");
callbacks = callbacks || {};
callbacks.success = (typeof callbacks.success == "function") ? callbacks.success : jQuery.noop;
callbacks.error = (typeof callbacks.error == "function") ? callbacks.error : jQuery.noop;
cleanupWebrtc(handleId);
if(!connected) {
Janus.log("Is the gateway down? (connected=false)");
callbacks.error("Is the gateway down? (connected=false)");
return;
}
$.ajax({
type: 'POST',
url: 'janus.php',
async:true,
cache: false,
data: {action:'destroyHandle',sessionId:sessionId,handleId:handleId},
success: function(json) {
//var json = $.parseJSON(json);
Janus.log("Destroyed handle:");
Janus.log(json);
if(json["janus"] !== "success") {
Janus.log("Ooops: " + json["error"].code + " " + json["error"].reason); // FIXME
}
delete pluginHandles[handleId];
callbacks.success();
},
error: function(XMLHttpRequest, textStatus, errorThrown) {
Janus.log(textStatus + ": " + errorThrown); // FIXME
// We cleanup anyway
delete pluginHandles[handleId];
callbacks.success();
},
dataType: "json"
});
}
// WebRTC stuff
function streamsDone(handleId, jsep, media, callbacks, stream) {
var pluginHandle = pluginHandles[handleId];
if(pluginHandle === null || pluginHandle === undefined ||
pluginHandle.webrtcStuff === null || pluginHandle.webrtcStuff === undefined) {
Janus.log("Invalid handle");
callbacks.error("Invalid handle");
return;
}
var config = pluginHandle.webrtcStuff;
if(stream !== null && stream !== undefined)
Janus.log(stream);
config.myStream = stream;
Janus.log("streamsDone:");
if(stream !== null && stream !== undefined)
Janus.log(stream);
var pc_config = {"iceServers": iceServers};
//~ var pc_constraints = {'mandatory': {'MozDontOfferDataChannel':true}};
var pc_constraints = {
"optional": [{"DtlsSrtpKeyAgreement": true}]
};
if(ipv6Support === true) {
// FIXME This is only supported in Chrome right now
// For support in Firefox track this: https://bugzilla.mozilla.org/show_bug.cgi?id=797262
pc_constraints.optional.push({"googIPv6":true});
}
Janus.log("Creating PeerConnection:");
Janus.log(pc_constraints);
config.pc = new RTCPeerConnection(pc_config, pc_constraints);
Janus.log(config.pc);
if(config.pc.getStats) { // FIXME
config.volume.value = 0;
config.bitrate.value = "0 kbits/sec";
}
Janus.log("Preparing local SDP and gathering candidates (trickle=" + config.trickle + ")");
config.pc.onicecandidate = function(event) {
if (event.candidate == null) {
Janus.log("End of candidates.");
config.iceDone = true;
if(config.trickle === true) {
// Notify end of candidates
sendTrickleCandidate(handleId, {"completed": true});
} else {
// No trickle, time to send the complete SDP (including all candidates)
sendSDP(handleId, callbacks);
}
} else {
// JSON.stringify doesn't work on some WebRTC objects anymore
// See https://code.google.com/p/chromium/issues/detail?id=467366
var candidate = {
"candidate": event.candidate.candidate,
"sdpMid": event.candidate.sdpMid,
"sdpMLineIndex": event.candidate.sdpMLineIndex
};
Janus.log("candidates: " + JSON.stringify(candidate));
if(config.trickle === true) {
// Send candidate
sendTrickleCandidate(handleId, candidate);
}
}
};
if(stream !== null && stream !== undefined) {
Janus.log('Adding local stream');
config.pc.addStream(stream);
pluginHandle.onlocalstream(stream);
}
config.pc.onaddstream = function(remoteStream) {
Janus.log("Handling Remote Stream:");
Janus.log(remoteStream);
config.remoteStream = remoteStream;
pluginHandle.onremotestream(remoteStream.stream);
};
// Any data channel to create?
if(isDataEnabled(media)) {
Janus.log("Creating data channel");
var onDataChannelMessage = function(event) {
Janus.log('Received message on data channel: ' + event.data);
pluginHandle.ondata(event.data); // FIXME
}
var onDataChannelStateChange = function() {
var dcState = config.dataChannel !== null ? config.dataChannel.readyState : "null";
Janus.log('State change on data channel: ' + dcState);
if(dcState === 'open') {
pluginHandle.ondataopen(); // FIXME
}
}
var onDataChannelError = function(error) {
Janus.log('Got error on data channel:');
Janus.log(error);
// TODO
}
// Until we implement the proxying of open requests within the Janus core, we open a channel ourselves whatever the case
config.dataChannel = config.pc.createDataChannel("JanusDataChannel", {ordered:false}); // FIXME Add options (ordered, maxRetransmits, etc.)
config.dataChannel.onmessage = onDataChannelMessage;
config.dataChannel.onopen = onDataChannelStateChange;
config.dataChannel.onclose = onDataChannelStateChange;
config.dataChannel.onerror = onDataChannelError;
}
// Create offer/answer now
if(jsep === null || jsep === undefined) {
createOffer(handleId, media, callbacks);
} else {
config.pc.setRemoteDescription(
new RTCSessionDescription(jsep),
function() {
Janus.log("Remote description accepted!");
createAnswer(handleId, media, callbacks);
}, callbacks.error);
}
}
function prepareWebrtc(handleId, callbacks) {
callbacks = callbacks || {};
callbacks.success = (typeof callbacks.success == "function") ? callbacks.success : jQuery.noop;
callbacks.error = (typeof callbacks.error == "function") ? callbacks.error : webrtcError;
var jsep = callbacks.jsep;
var media = callbacks.media;
var pluginHandle = pluginHandles[handleId];
if(pluginHandle === null || pluginHandle === undefined ||
pluginHandle.webrtcStuff === null || pluginHandle.webrtcStuff === undefined) {
Janus.log("Invalid handle");
callbacks.error("Invalid handle");
return;
}
var config = pluginHandle.webrtcStuff;
// Are we updating a session?
if(config.pc !== undefined && config.pc !== null) {
Janus.log("Updating existing media session");
// Create offer/answer now
if(jsep === null || jsep === undefined) {
createOffer(handleId, media, callbacks);
} else {
config.pc.setRemoteDescription(
new RTCSessionDescription(jsep),
function() {
Janus.log("Remote description accepted!");
createAnswer(handleId, media, callbacks);
}, callbacks.error);
}
return;
}
config.trickle = isTrickleEnabled(callbacks.trickle);
if(isAudioSendEnabled(media) || isVideoSendEnabled(media)) {
var constraints = { mandatory: {}, optional: []};
pluginHandle.consentDialog(true);
var videoSupport = isVideoSendEnabled(media);
if(videoSupport === true && media != undefined && media != null) {
if(media.video && media.video != 'screen') {
var width = 0;
var height = 0, maxHeight = 0;
if(media.video === 'lowres') {
// Small resolution, 4:3
height = 240;
maxHeight = 240;
width = 320;
} else if(media.video === 'lowres-16:9') {
// Small resolution, 16:9
height = 180;
maxHeight = 180;
width = 320;
} else if(media.video === 'hires' || media.video === 'hires-16:9' ) {
// High resolution is only 16:9
height = 720;
maxHeight = 720;
width = 1280;
if(navigator.mozGetUserMedia) {
var firefoxVer = parseInt(window.navigator.userAgent.match(/Firefox\/(.*)/)[1], 10);
if(firefoxVer < 38) {
// Unless this is and old Firefox, which doesn't support it
Janus.log(media.video + " unsupported, falling back to stdres (old Firefox)");
height = 480;
maxHeight = 480;
width = 640;
}
}
} else if(media.video === 'stdres') {
// Normal resolution, 4:3
height = 480;
maxHeight = 480;
width = 640;
} else if(media.video === 'stdres-16:9') {
// Normal resolution, 16:9
height = 360;
maxHeight = 360;
width = 640;
} else {
Janus.log("Default video setting (" + media.video + ") is stdres 4:3");
height = 480;
maxHeight = 480;
width = 640;
}
Janus.log("Adding media constraint " + media.video);
if(navigator.mozGetUserMedia) {
var firefoxVer = parseInt(window.navigator.userAgent.match(/Firefox\/(.*)/)[1], 10);
if(firefoxVer < 38) {
videoSupport = {
'require': ['height', 'width'],
'height': {'max': maxHeight, 'min': height},
'width': {'max': width, 'min': width}
};
} else {
// http://stackoverflow.com/questions/28282385/webrtc-firefox-constraints/28911694#28911694
// https://github.com/meetecho/janus-gateway/pull/246
videoSupport = {
'height': {'ideal': height},
'width': {'ideal': width}
};
}
} else {
videoSupport = {
'mandatory': {
'maxHeight': maxHeight,
'minHeight': height,
'maxWidth': width,
'minWidth': width
},
'optional': []
};
}
Janus.log(videoSupport);
} else if(media.video === 'screen') {
// Not a webcam, but screen capture
if(window.location.protocol !== 'https:') {
// Screen sharing mandates HTTPS
Janus.log("Screen sharing only works on HTTPS, try the https:// version of this page");
pluginHandle.consentDialog(false);
callbacks.error("Screen sharing only works on HTTPS, try the https:// version of this page");
return;
}
// We're going to try and use the extension for Chrome 34+, the old approach
// for older versions of Chrome, or the experimental support in Firefox 33+
var cache = {};
function callbackUserMedia (error, stream) {
pluginHandle.consentDialog(false);
if(error) {
callbacks.error(error);
} else {
streamsDone(handleId, jsep, media, callbacks, stream);
}
};
function getScreenMedia(constraints, gsmCallback) {
Janus.log("Adding media constraint (screen capture)");
Janus.log(constraints);
getUserMedia(constraints,
function(stream) {
gsmCallback(null, stream);
},
function(error) {
pluginHandle.consentDialog(false);
gsmCallback(error);
}
);
};
if(window.navigator.userAgent.match('Chrome')) {
var chromever = parseInt(window.navigator.userAgent.match(/Chrome\/(.*) /)[1], 10);
var maxver = 33;
if(window.navigator.userAgent.match('Linux'))
maxver = 35; // "known" crash in chrome 34 and 35 on linux
if(chromever >= 26 && chromever <= maxver) {
// Chrome 26->33 requires some awkward chrome://flags manipulation
constraints = {