713 lines
27 KiB
JavaScript
713 lines
27 KiB
JavaScript
|
/* jshint -W117 */
|
||
|
|
// SDP STUFF
|
||
|
|
function SDP(sdp) {
|
||
|
|
this.media = sdp.split('\r\nm=');
|
||
|
|
for (var i = 1; i < this.media.length; i++) {
|
||
|
|
this.media[i] = 'm=' + this.media[i];
|
||
|
|
if (i != this.media.length - 1) {
|
||
|
|
this.media[i] += '\r\n';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
this.session = this.media.shift() + '\r\n';
|
||
|
|
this.raw = this.session + this.media.join('');
|
||
|
|
}
|
||
|
|
|
||
|
|
exports.SDP = SDP;
|
||
|
|
|
||
|
|
var jsdom = require("jsdom");
|
||
|
|
var window = jsdom.jsdom().parentWindow;
|
||
|
|
var $ = require('jquery')(window);
|
||
|
|
|
||
|
|
var SDPUtil = require('./strophe.jingle.sdp.util.js').SDPUtil;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns map of MediaChannel mapped per channel idx.
|
||
|
|
*/
|
||
|
|
SDP.prototype.getMediaSsrcMap = function() {
|
||
|
|
var self = this;
|
||
|
|
var media_ssrcs = {};
|
||
|
|
for (channelNum = 0; channelNum < self.media.length; channelNum++) {
|
||
|
|
modified = true;
|
||
|
|
tmp = SDPUtil.find_lines(self.media[channelNum], 'a=ssrc:');
|
||
|
|
var type = SDPUtil.parse_mid(SDPUtil.find_line(self.media[channelNum], 'a=mid:'));
|
||
|
|
var channel = new MediaChannel(channelNum, type);
|
||
|
|
media_ssrcs[channelNum] = channel;
|
||
|
|
tmp.forEach(function (line) {
|
||
|
|
var linessrc = line.substring(7).split(' ')[0];
|
||
|
|
// allocate new ChannelSsrc
|
||
|
|
if(!channel.ssrcs[linessrc]) {
|
||
|
|
channel.ssrcs[linessrc] = new ChannelSsrc(linessrc, type);
|
||
|
|
}
|
||
|
|
channel.ssrcs[linessrc].lines.push(line);
|
||
|
|
});
|
||
|
|
tmp = SDPUtil.find_lines(self.media[channelNum], 'a=ssrc-group:');
|
||
|
|
tmp.forEach(function(line){
|
||
|
|
var semantics = line.substr(0, idx).substr(13);
|
||
|
|
var ssrcs = line.substr(14 + semantics.length).split(' ');
|
||
|
|
if (ssrcs.length != 0) {
|
||
|
|
var ssrcGroup = new ChannelSsrcGroup(semantics, ssrcs);
|
||
|
|
channel.ssrcGroups.push(ssrcGroup);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
return media_ssrcs;
|
||
|
|
};
|
||
|
|
/**
|
||
|
|
* Returns <tt>true</tt> if this SDP contains given SSRC.
|
||
|
|
* @param ssrc the ssrc to check.
|
||
|
|
* @returns {boolean} <tt>true</tt> if this SDP contains given SSRC.
|
||
|
|
*/
|
||
|
|
SDP.prototype.containsSSRC = function(ssrc) {
|
||
|
|
var channels = this.getMediaSsrcMap();
|
||
|
|
var contains = false;
|
||
|
|
Object.keys(channels).forEach(function(chNumber){
|
||
|
|
var channel = channels[chNumber];
|
||
|
|
//console.log("Check", channel, ssrc);
|
||
|
|
if(Object.keys(channel.ssrcs).indexOf(ssrc) != -1){
|
||
|
|
contains = true;
|
||
|
|
}
|
||
|
|
});
|
||
|
|
return contains;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns map of MediaChannel that contains only media not contained in <tt>otherSdp</tt>. Mapped by channel idx.
|
||
|
|
* @param otherSdp the other SDP to check ssrc with.
|
||
|
|
*/
|
||
|
|
SDP.prototype.getNewMedia = function(otherSdp) {
|
||
|
|
|
||
|
|
// this could be useful in Array.prototype.
|
||
|
|
function arrayEquals(array) {
|
||
|
|
// if the other array is a falsy value, return
|
||
|
|
if (!array)
|
||
|
|
return false;
|
||
|
|
|
||
|
|
// compare lengths - can save a lot of time
|
||
|
|
if (this.length != array.length)
|
||
|
|
return false;
|
||
|
|
|
||
|
|
for (var i = 0, l=this.length; i < l; i++) {
|
||
|
|
// Check if we have nested arrays
|
||
|
|
if (this[i] instanceof Array && array[i] instanceof Array) {
|
||
|
|
// recurse into the nested arrays
|
||
|
|
if (!this[i].equals(array[i]))
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
else if (this[i] != array[i]) {
|
||
|
|
// Warning - two different object instances will never be equal: {x:20} != {x:20}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
var myMedia = this.getMediaSsrcMap();
|
||
|
|
var othersMedia = otherSdp.getMediaSsrcMap();
|
||
|
|
var newMedia = {};
|
||
|
|
Object.keys(othersMedia).forEach(function(channelNum) {
|
||
|
|
var myChannel = myMedia[channelNum];
|
||
|
|
var othersChannel = othersMedia[channelNum];
|
||
|
|
if(!myChannel && othersChannel) {
|
||
|
|
// Add whole channel
|
||
|
|
newMedia[channelNum] = othersChannel;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
// Look for new ssrcs accross the channel
|
||
|
|
Object.keys(othersChannel.ssrcs).forEach(function(ssrc) {
|
||
|
|
if(Object.keys(myChannel.ssrcs).indexOf(ssrc) === -1) {
|
||
|
|
// Allocate channel if we've found ssrc that doesn't exist in our channel
|
||
|
|
if(!newMedia[channelNum]){
|
||
|
|
newMedia[channelNum] = new MediaChannel(othersChannel.chNumber, othersChannel.mediaType);
|
||
|
|
}
|
||
|
|
newMedia[channelNum].ssrcs[ssrc] = othersChannel.ssrcs[ssrc];
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
// Look for new ssrc groups across the channels
|
||
|
|
othersChannel.ssrcGroups.forEach(function(otherSsrcGroup){
|
||
|
|
|
||
|
|
// try to match the other ssrc-group with an ssrc-group of ours
|
||
|
|
var matched = false;
|
||
|
|
for (var i = 0; i < myChannel.ssrcGroups.length; i++) {
|
||
|
|
var mySsrcGroup = myChannel.ssrcGroups[i];
|
||
|
|
if (otherSsrcGroup.semantics == mySsrcGroup.semantics
|
||
|
|
&& arrayEquals.apply(otherSsrcGroup.ssrcs, [mySsrcGroup.ssrcs])) {
|
||
|
|
|
||
|
|
matched = true;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!matched) {
|
||
|
|
// Allocate channel if we've found an ssrc-group that doesn't
|
||
|
|
// exist in our channel
|
||
|
|
|
||
|
|
if(!newMedia[channelNum]){
|
||
|
|
newMedia[channelNum] = new MediaChannel(othersChannel.chNumber, othersChannel.mediaType);
|
||
|
|
}
|
||
|
|
newMedia[channelNum].ssrcGroups.push(otherSsrcGroup);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
});
|
||
|
|
return newMedia;
|
||
|
|
};
|
||
|
|
|
||
|
|
// remove iSAC and CN from SDP
|
||
|
|
SDP.prototype.mangle = function () {
|
||
|
|
var i, j, mline, lines, rtpmap, newdesc;
|
||
|
|
for (i = 0; i < this.media.length; i++) {
|
||
|
|
lines = this.media[i].split('\r\n');
|
||
|
|
lines.pop(); // remove empty last element
|
||
|
|
mline = SDPUtil.parse_mline(lines.shift());
|
||
|
|
if (mline.media != 'audio')
|
||
|
|
continue;
|
||
|
|
newdesc = '';
|
||
|
|
mline.fmt.length = 0;
|
||
|
|
for (j = 0; j < lines.length; j++) {
|
||
|
|
if (lines[j].substr(0, 9) == 'a=rtpmap:') {
|
||
|
|
rtpmap = SDPUtil.parse_rtpmap(lines[j]);
|
||
|
|
if (rtpmap.name == 'CN' || rtpmap.name == 'ISAC')
|
||
|
|
continue;
|
||
|
|
mline.fmt.push(rtpmap.id);
|
||
|
|
newdesc += lines[j] + '\r\n';
|
||
|
|
} else {
|
||
|
|
newdesc += lines[j] + '\r\n';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
this.media[i] = SDPUtil.build_mline(mline) + '\r\n';
|
||
|
|
this.media[i] += newdesc;
|
||
|
|
}
|
||
|
|
this.raw = this.session + this.media.join('');
|
||
|
|
};
|
||
|
|
|
||
|
|
// remove lines matching prefix from session section
|
||
|
|
SDP.prototype.removeSessionLines = function(prefix) {
|
||
|
|
var self = this;
|
||
|
|
var lines = SDPUtil.find_lines(this.session, prefix);
|
||
|
|
lines.forEach(function(line) {
|
||
|
|
self.session = self.session.replace(line + '\r\n', '');
|
||
|
|
});
|
||
|
|
this.raw = this.session + this.media.join('');
|
||
|
|
return lines;
|
||
|
|
}
|
||
|
|
// remove lines matching prefix from a media section specified by mediaindex
|
||
|
|
// TODO: non-numeric mediaindex could match mid
|
||
|
|
SDP.prototype.removeMediaLines = function(mediaindex, prefix) {
|
||
|
|
var self = this;
|
||
|
|
var lines = SDPUtil.find_lines(this.media[mediaindex], prefix);
|
||
|
|
lines.forEach(function(line) {
|
||
|
|
self.media[mediaindex] = self.media[mediaindex].replace(line + '\r\n', '');
|
||
|
|
});
|
||
|
|
this.raw = this.session + this.media.join('');
|
||
|
|
return lines;
|
||
|
|
}
|
||
|
|
|
||
|
|
// add content's to a jingle element
|
||
|
|
SDP.prototype.toJingle = function (elem, thecreator) {
|
||
|
|
var i, j, k, mline, ssrc, rtpmap, tmp, line, lines;
|
||
|
|
var self = this;
|
||
|
|
// new bundle plan
|
||
|
|
if (SDPUtil.find_line(this.session, 'a=group:')) {
|
||
|
|
lines = SDPUtil.find_lines(this.session, 'a=group:');
|
||
|
|
for (i = 0; i < lines.length; i++) {
|
||
|
|
tmp = lines[i].split(' ');
|
||
|
|
var semantics = tmp.shift().substr(8);
|
||
|
|
elem.c('group', {xmlns: 'urn:xmpp:jingle:apps:grouping:0', semantics:semantics});
|
||
|
|
for (j = 0; j < tmp.length; j++) {
|
||
|
|
elem.c('content', {name: tmp[j]}).up();
|
||
|
|
}
|
||
|
|
elem.up();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// old bundle plan, to be removed
|
||
|
|
var bundle = [];
|
||
|
|
if (SDPUtil.find_line(this.session, 'a=group:BUNDLE')) {
|
||
|
|
bundle = SDPUtil.find_line(this.session, 'a=group:BUNDLE ').split(' ');
|
||
|
|
bundle.shift();
|
||
|
|
}
|
||
|
|
for (i = 0; i < this.media.length; i++) {
|
||
|
|
mline = SDPUtil.parse_mline(this.media[i].split('\r\n')[0]);
|
||
|
|
if (!(mline.media === 'audio' ||
|
||
|
|
mline.media === 'video' ||
|
||
|
|
mline.media === 'application'))
|
||
|
|
{
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
if (SDPUtil.find_line(this.media[i], 'a=ssrc:')) {
|
||
|
|
ssrc = SDPUtil.find_line(this.media[i], 'a=ssrc:').substring(7).split(' ')[0]; // take the first
|
||
|
|
} else {
|
||
|
|
ssrc = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
elem.c('content', {creator: thecreator, name: mline.media});
|
||
|
|
if (SDPUtil.find_line(this.media[i], 'a=mid:')) {
|
||
|
|
// prefer identifier from a=mid if present
|
||
|
|
var mid = SDPUtil.parse_mid(SDPUtil.find_line(this.media[i], 'a=mid:'));
|
||
|
|
elem.attrs({ name: mid });
|
||
|
|
|
||
|
|
// old BUNDLE plan, to be removed
|
||
|
|
if (bundle.indexOf(mid) !== -1) {
|
||
|
|
elem.c('bundle', {xmlns: 'http://estos.de/ns/bundle'}).up();
|
||
|
|
bundle.splice(bundle.indexOf(mid), 1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (SDPUtil.find_line(this.media[i], 'a=rtpmap:').length)
|
||
|
|
{
|
||
|
|
elem.c('description',
|
||
|
|
{xmlns: 'urn:xmpp:jingle:apps:rtp:1',
|
||
|
|
media: mline.media });
|
||
|
|
if (ssrc) {
|
||
|
|
elem.attrs({ssrc: ssrc});
|
||
|
|
}
|
||
|
|
for (j = 0; j < mline.fmt.length; j++) {
|
||
|
|
rtpmap = SDPUtil.find_line(this.media[i], 'a=rtpmap:' + mline.fmt[j]);
|
||
|
|
elem.c('payload-type', SDPUtil.parse_rtpmap(rtpmap));
|
||
|
|
// put any 'a=fmtp:' + mline.fmt[j] lines into <param name=foo value=bar/>
|
||
|
|
if (SDPUtil.find_line(this.media[i], 'a=fmtp:' + mline.fmt[j])) {
|
||
|
|
tmp = SDPUtil.parse_fmtp(SDPUtil.find_line(this.media[i], 'a=fmtp:' + mline.fmt[j]));
|
||
|
|
for (k = 0; k < tmp.length; k++) {
|
||
|
|
elem.c('parameter', tmp[k]).up();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
this.RtcpFbToJingle(i, elem, mline.fmt[j]); // XEP-0293 -- map a=rtcp-fb
|
||
|
|
|
||
|
|
elem.up();
|
||
|
|
}
|
||
|
|
if (SDPUtil.find_line(this.media[i], 'a=crypto:', this.session)) {
|
||
|
|
elem.c('encryption', {required: 1});
|
||
|
|
var crypto = SDPUtil.find_lines(this.media[i], 'a=crypto:', this.session);
|
||
|
|
crypto.forEach(function(line) {
|
||
|
|
elem.c('crypto', SDPUtil.parse_crypto(line)).up();
|
||
|
|
});
|
||
|
|
elem.up(); // end of encryption
|
||
|
|
}
|
||
|
|
|
||
|
|
if (ssrc) {
|
||
|
|
// new style mapping
|
||
|
|
elem.c('source', { ssrc: ssrc, xmlns: 'urn:xmpp:jingle:apps:rtp:ssma:0' });
|
||
|
|
// FIXME: group by ssrc and support multiple different ssrcs
|
||
|
|
var ssrclines = SDPUtil.find_lines(this.media[i], 'a=ssrc:');
|
||
|
|
ssrclines.forEach(function(line) {
|
||
|
|
idx = line.indexOf(' ');
|
||
|
|
var linessrc = line.substr(0, idx).substr(7);
|
||
|
|
if (linessrc != ssrc) {
|
||
|
|
elem.up();
|
||
|
|
ssrc = linessrc;
|
||
|
|
elem.c('source', { ssrc: ssrc, xmlns: 'urn:xmpp:jingle:apps:rtp:ssma:0' });
|
||
|
|
}
|
||
|
|
var kv = line.substr(idx + 1);
|
||
|
|
elem.c('parameter');
|
||
|
|
if (kv.indexOf(':') == -1) {
|
||
|
|
elem.attrs({ name: kv });
|
||
|
|
} else {
|
||
|
|
elem.attrs({ name: kv.split(':', 2)[0] });
|
||
|
|
elem.attrs({ value: kv.split(':', 2)[1] });
|
||
|
|
}
|
||
|
|
elem.up();
|
||
|
|
});
|
||
|
|
elem.up();
|
||
|
|
|
||
|
|
// old proprietary mapping, to be removed at some point
|
||
|
|
tmp = SDPUtil.parse_ssrc(this.media[i]);
|
||
|
|
tmp.xmlns = 'http://estos.de/ns/ssrc';
|
||
|
|
tmp.ssrc = ssrc;
|
||
|
|
elem.c('ssrc', tmp).up(); // ssrc is part of description
|
||
|
|
|
||
|
|
// XEP-0339 handle ssrc-group attributes
|
||
|
|
var ssrc_group_lines = SDPUtil.find_lines(this.media[i], 'a=ssrc-group:');
|
||
|
|
ssrc_group_lines.forEach(function(line) {
|
||
|
|
idx = line.indexOf(' ');
|
||
|
|
var semantics = line.substr(0, idx).substr(13);
|
||
|
|
var ssrcs = line.substr(14 + semantics.length).split(' ');
|
||
|
|
if (ssrcs.length != 0) {
|
||
|
|
elem.c('ssrc-group', { semantics: semantics, xmlns: 'urn:xmpp:jingle:apps:rtp:ssma:0' });
|
||
|
|
ssrcs.forEach(function(ssrc) {
|
||
|
|
elem.c('source', { ssrc: ssrc })
|
||
|
|
.up();
|
||
|
|
});
|
||
|
|
elem.up();
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
if (SDPUtil.find_line(this.media[i], 'a=rtcp-mux')) {
|
||
|
|
elem.c('rtcp-mux').up();
|
||
|
|
}
|
||
|
|
|
||
|
|
// XEP-0293 -- map a=rtcp-fb:*
|
||
|
|
this.RtcpFbToJingle(i, elem, '*');
|
||
|
|
|
||
|
|
// XEP-0294
|
||
|
|
if (SDPUtil.find_line(this.media[i], 'a=extmap:')) {
|
||
|
|
lines = SDPUtil.find_lines(this.media[i], 'a=extmap:');
|
||
|
|
for (j = 0; j < lines.length; j++) {
|
||
|
|
tmp = SDPUtil.parse_extmap(lines[j]);
|
||
|
|
elem.c('rtp-hdrext', { xmlns: 'urn:xmpp:jingle:apps:rtp:rtp-hdrext:0',
|
||
|
|
uri: tmp.uri,
|
||
|
|
id: tmp.value });
|
||
|
|
if (tmp.hasOwnProperty('direction')) {
|
||
|
|
switch (tmp.direction) {
|
||
|
|
case 'sendonly':
|
||
|
|
elem.attrs({senders: 'responder'});
|
||
|
|
break;
|
||
|
|
case 'recvonly':
|
||
|
|
elem.attrs({senders: 'initiator'});
|
||
|
|
break;
|
||
|
|
case 'sendrecv':
|
||
|
|
elem.attrs({senders: 'both'});
|
||
|
|
break;
|
||
|
|
case 'inactive':
|
||
|
|
elem.attrs({senders: 'none'});
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// TODO: handle params
|
||
|
|
elem.up();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
elem.up(); // end of description
|
||
|
|
}
|
||
|
|
|
||
|
|
// map ice-ufrag/pwd, dtls fingerprint, candidates
|
||
|
|
this.TransportToJingle(i, elem);
|
||
|
|
|
||
|
|
if (SDPUtil.find_line(this.media[i], 'a=sendrecv', this.session)) {
|
||
|
|
elem.attrs({senders: 'both'});
|
||
|
|
} else if (SDPUtil.find_line(this.media[i], 'a=sendonly', this.session)) {
|
||
|
|
elem.attrs({senders: 'initiator'});
|
||
|
|
} else if (SDPUtil.find_line(this.media[i], 'a=recvonly', this.session)) {
|
||
|
|
elem.attrs({senders: 'responder'});
|
||
|
|
} else if (SDPUtil.find_line(this.media[i], 'a=inactive', this.session)) {
|
||
|
|
elem.attrs({senders: 'none'});
|
||
|
|
}
|
||
|
|
if (mline.port == '0') {
|
||
|
|
// estos hack to reject an m-line
|
||
|
|
elem.attrs({senders: 'rejected'});
|
||
|
|
}
|
||
|
|
elem.up(); // end of content
|
||
|
|
}
|
||
|
|
elem.up();
|
||
|
|
return elem;
|
||
|
|
};
|
||
|
|
|
||
|
|
SDP.prototype.TransportToJingle = function (mediaindex, elem) {
|
||
|
|
var i = mediaindex;
|
||
|
|
var tmp;
|
||
|
|
var self = this;
|
||
|
|
elem.c('transport');
|
||
|
|
|
||
|
|
// XEP-0343 DTLS/SCTP
|
||
|
|
if (SDPUtil.find_line(this.media[mediaindex], 'a=sctpmap:').length)
|
||
|
|
{
|
||
|
|
var sctpmap = SDPUtil.find_line(
|
||
|
|
this.media[i], 'a=sctpmap:', self.session);
|
||
|
|
if (sctpmap)
|
||
|
|
{
|
||
|
|
var sctpAttrs = SDPUtil.parse_sctpmap(sctpmap);
|
||
|
|
elem.c('sctpmap',
|
||
|
|
{
|
||
|
|
xmlns: 'urn:xmpp:jingle:transports:dtls-sctp:1',
|
||
|
|
number: sctpAttrs[0], /* SCTP port */
|
||
|
|
protocol: sctpAttrs[1], /* protocol */
|
||
|
|
});
|
||
|
|
// Optional stream count attribute
|
||
|
|
if (sctpAttrs.length > 2)
|
||
|
|
elem.attrs({ streams: sctpAttrs[2]});
|
||
|
|
elem.up();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// XEP-0320
|
||
|
|
var fingerprints = SDPUtil.find_lines(this.media[mediaindex], 'a=fingerprint:', this.session);
|
||
|
|
fingerprints.forEach(function(line) {
|
||
|
|
tmp = SDPUtil.parse_fingerprint(line);
|
||
|
|
tmp.xmlns = 'urn:xmpp:jingle:apps:dtls:0';
|
||
|
|
elem.c('fingerprint').t(tmp.fingerprint);
|
||
|
|
delete tmp.fingerprint;
|
||
|
|
line = SDPUtil.find_line(self.media[mediaindex], 'a=setup:', self.session);
|
||
|
|
if (line) {
|
||
|
|
tmp.setup = line.substr(8);
|
||
|
|
}
|
||
|
|
elem.attrs(tmp);
|
||
|
|
elem.up(); // end of fingerprint
|
||
|
|
});
|
||
|
|
tmp = SDPUtil.iceparams(this.media[mediaindex], this.session);
|
||
|
|
if (tmp) {
|
||
|
|
tmp.xmlns = 'urn:xmpp:jingle:transports:ice-udp:1';
|
||
|
|
elem.attrs(tmp);
|
||
|
|
// XEP-0176
|
||
|
|
if (SDPUtil.find_line(this.media[mediaindex], 'a=candidate:', this.session)) { // add any a=candidate lines
|
||
|
|
var lines = SDPUtil.find_lines(this.media[mediaindex], 'a=candidate:', this.session);
|
||
|
|
lines.forEach(function (line) {
|
||
|
|
elem.c('candidate', SDPUtil.candidateToJingle(line)).up();
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
elem.up(); // end of transport
|
||
|
|
}
|
||
|
|
|
||
|
|
SDP.prototype.RtcpFbToJingle = function (mediaindex, elem, payloadtype) { // XEP-0293
|
||
|
|
var lines = SDPUtil.find_lines(this.media[mediaindex], 'a=rtcp-fb:' + payloadtype);
|
||
|
|
lines.forEach(function (line) {
|
||
|
|
var tmp = SDPUtil.parse_rtcpfb(line);
|
||
|
|
if (tmp.type == 'trr-int') {
|
||
|
|
elem.c('rtcp-fb-trr-int', {xmlns: 'urn:xmpp:jingle:apps:rtp:rtcp-fb:0', value: tmp.params[0]});
|
||
|
|
elem.up();
|
||
|
|
} else {
|
||
|
|
elem.c('rtcp-fb', {xmlns: 'urn:xmpp:jingle:apps:rtp:rtcp-fb:0', type: tmp.type});
|
||
|
|
if (tmp.params.length > 0) {
|
||
|
|
elem.attrs({'subtype': tmp.params[0]});
|
||
|
|
}
|
||
|
|
elem.up();
|
||
|
|
}
|
||
|
|
});
|
||
|
|
};
|
||
|
|
|
||
|
|
SDP.prototype.RtcpFbFromJingle = function (elem, payloadtype) { // XEP-0293
|
||
|
|
var media = '';
|
||
|
|
var tmp = elem.find('>rtcp-fb-trr-int[xmlns="urn:xmpp:jingle:apps:rtp:rtcp-fb:0"]');
|
||
|
|
if (tmp.length) {
|
||
|
|
media += 'a=rtcp-fb:' + '*' + ' ' + 'trr-int' + ' ';
|
||
|
|
if (tmp.attr('value')) {
|
||
|
|
media += tmp.attr('value');
|
||
|
|
} else {
|
||
|
|
media += '0';
|
||
|
|
}
|
||
|
|
media += '\r\n';
|
||
|
|
}
|
||
|
|
tmp = elem.find('>rtcp-fb[xmlns="urn:xmpp:jingle:apps:rtp:rtcp-fb:0"]');
|
||
|
|
tmp.each(function () {
|
||
|
|
media += 'a=rtcp-fb:' + payloadtype + ' ' + $(this).attr('type');
|
||
|
|
if ($(this).attr('subtype')) {
|
||
|
|
media += ' ' + $(this).attr('subtype');
|
||
|
|
}
|
||
|
|
media += '\r\n';
|
||
|
|
});
|
||
|
|
return media;
|
||
|
|
};
|
||
|
|
|
||
|
|
// construct an SDP from a jingle stanza
|
||
|
|
SDP.prototype.fromJingle = function (jingle) {
|
||
|
|
var self = this;
|
||
|
|
this.raw = 'v=0\r\n' +
|
||
|
|
'o=- ' + '1923518516' + ' 2 IN IP4 0.0.0.0\r\n' +// FIXME
|
||
|
|
's=-\r\n' +
|
||
|
|
't=0 0\r\n';
|
||
|
|
// http://tools.ietf.org/html/draft-ietf-mmusic-sdp-bundle-negotiation-04#section-8
|
||
|
|
if ($(jingle).find('>group[xmlns="urn:xmpp:jingle:apps:grouping:0"]').length) {
|
||
|
|
$(jingle).find('>group[xmlns="urn:xmpp:jingle:apps:grouping:0"]').each(function (idx, group) {
|
||
|
|
var contents = $(group).find('>content').map(function (idx, content) {
|
||
|
|
return content.getAttribute('name');
|
||
|
|
}).get();
|
||
|
|
if (contents.length > 0) {
|
||
|
|
self.raw += 'a=group:' + (group.getAttribute('semantics') || group.getAttribute('type')) + ' ' + contents.join(' ') + '\r\n';
|
||
|
|
}
|
||
|
|
});
|
||
|
|
} else if ($(jingle).find('>group[xmlns="urn:ietf:rfc:5888"]').length) {
|
||
|
|
// temporary namespace, not to be used. to be removed soon.
|
||
|
|
$(jingle).find('>group[xmlns="urn:ietf:rfc:5888"]').each(function (idx, group) {
|
||
|
|
var contents = $(group).find('>content').map(function (idx, content) {
|
||
|
|
return content.getAttribute('name');
|
||
|
|
}).get();
|
||
|
|
if (group.getAttribute('type') !== null && contents.length > 0) {
|
||
|
|
self.raw += 'a=group:' + group.getAttribute('type') + ' ' + contents.join(' ') + '\r\n';
|
||
|
|
}
|
||
|
|
});
|
||
|
|
} else {
|
||
|
|
// for backward compability, to be removed soon
|
||
|
|
// assume all contents are in the same bundle group, can be improved upon later
|
||
|
|
var bundle = $(jingle).find('>content').filter(function (idx, content) {
|
||
|
|
//elem.c('bundle', {xmlns:'http://estos.de/ns/bundle'});
|
||
|
|
return $(content).find('>bundle').length > 0;
|
||
|
|
}).map(function (idx, content) {
|
||
|
|
return content.getAttribute('name');
|
||
|
|
}).get();
|
||
|
|
if (bundle.length) {
|
||
|
|
this.raw += 'a=group:BUNDLE ' + bundle.join(' ') + '\r\n';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
this.session = this.raw;
|
||
|
|
jingle.find('>content').each(function () {
|
||
|
|
var m = self.jingle2media($(this));
|
||
|
|
self.media.push(m);
|
||
|
|
});
|
||
|
|
|
||
|
|
// reconstruct msid-semantic -- apparently not necessary
|
||
|
|
/*
|
||
|
|
var msid = SDPUtil.parse_ssrc(this.raw);
|
||
|
|
if (msid.hasOwnProperty('mslabel')) {
|
||
|
|
this.session += "a=msid-semantic: WMS " + msid.mslabel + "\r\n";
|
||
|
|
}
|
||
|
|
*/
|
||
|
|
|
||
|
|
this.raw = this.session + this.media.join('');
|
||
|
|
};
|
||
|
|
|
||
|
|
// translate a jingle content element into an an SDP media part
|
||
|
|
SDP.prototype.jingle2media = function (content) {
|
||
|
|
var media = '',
|
||
|
|
desc = content.find('description'),
|
||
|
|
ssrc = desc.attr('ssrc'),
|
||
|
|
self = this,
|
||
|
|
tmp;
|
||
|
|
var sctp = content.find(
|
||
|
|
'>transport>sctpmap[xmlns="urn:xmpp:jingle:transports:dtls-sctp:1"]');
|
||
|
|
|
||
|
|
tmp = { media: desc.attr('media') };
|
||
|
|
tmp.port = '1';
|
||
|
|
if (content.attr('senders') == 'rejected') {
|
||
|
|
// estos hack to reject an m-line.
|
||
|
|
tmp.port = '0';
|
||
|
|
}
|
||
|
|
if (content.find('>transport>fingerprint').length || desc.find('encryption').length) {
|
||
|
|
if (sctp.length)
|
||
|
|
tmp.proto = 'DTLS/SCTP';
|
||
|
|
else
|
||
|
|
tmp.proto = 'RTP/SAVPF';
|
||
|
|
} else {
|
||
|
|
tmp.proto = 'RTP/AVPF';
|
||
|
|
}
|
||
|
|
if (!sctp.length)
|
||
|
|
{
|
||
|
|
tmp.fmt = desc.find('payload-type').map(
|
||
|
|
function () { return this.getAttribute('id'); }).get();
|
||
|
|
media += SDPUtil.build_mline(tmp) + '\r\n';
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
media += 'm=application 1 DTLS/SCTP ' + sctp.attr('number') + '\r\n';
|
||
|
|
media += 'a=sctpmap:' + sctp.attr('number') +
|
||
|
|
' ' + sctp.attr('protocol');
|
||
|
|
|
||
|
|
var streamCount = sctp.attr('streams');
|
||
|
|
if (streamCount)
|
||
|
|
media += ' ' + streamCount + '\r\n';
|
||
|
|
else
|
||
|
|
media += '\r\n';
|
||
|
|
}
|
||
|
|
|
||
|
|
media += 'c=IN IP4 0.0.0.0\r\n';
|
||
|
|
if (!sctp.length)
|
||
|
|
media += 'a=rtcp:1 IN IP4 0.0.0.0\r\n';
|
||
|
|
//tmp = content.find('>transport[xmlns="urn:xmpp:jingle:transports:ice-udp:1"]');
|
||
|
|
tmp = content.find('>bundle>transport[xmlns="urn:xmpp:jingle:transports:ice-udp:1"]');
|
||
|
|
//console.log('transports: '+content.find('>transport[xmlns="urn:xmpp:jingle:transports:ice-udp:1"]').length);
|
||
|
|
//console.log('bundle.transports: '+content.find('>bundle>transport[xmlns="urn:xmpp:jingle:transports:ice-udp:1"]').length);
|
||
|
|
//console.log("tmp fingerprint: "+tmp.find('>fingerprint').innerHTML);
|
||
|
|
if (tmp.length) {
|
||
|
|
if (tmp.attr('ufrag')) {
|
||
|
|
media += SDPUtil.build_iceufrag(tmp.attr('ufrag')) + '\r\n';
|
||
|
|
}
|
||
|
|
if (tmp.attr('pwd')) {
|
||
|
|
media += SDPUtil.build_icepwd(tmp.attr('pwd')) + '\r\n';
|
||
|
|
}
|
||
|
|
tmp.find('>fingerprint').each(function () {
|
||
|
|
// FIXME: check namespace at some point
|
||
|
|
media += 'a=fingerprint:' + this.getAttribute('hash');
|
||
|
|
media += ' ' + $(this).text();
|
||
|
|
media += '\r\n';
|
||
|
|
//console.log("mline "+media);
|
||
|
|
if (this.getAttribute('setup')) {
|
||
|
|
media += 'a=setup:' + this.getAttribute('setup') + '\r\n';
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
switch (content.attr('senders')) {
|
||
|
|
case 'initiator':
|
||
|
|
media += 'a=sendonly\r\n';
|
||
|
|
break;
|
||
|
|
case 'responder':
|
||
|
|
media += 'a=recvonly\r\n';
|
||
|
|
break;
|
||
|
|
case 'none':
|
||
|
|
media += 'a=inactive\r\n';
|
||
|
|
break;
|
||
|
|
case 'both':
|
||
|
|
media += 'a=sendrecv\r\n';
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
media += 'a=mid:' + content.attr('name') + '\r\n';
|
||
|
|
/*if (content.attr('name') == 'video') {
|
||
|
|
media += 'a=x-google-flag:conference' + '\r\n';
|
||
|
|
}*/
|
||
|
|
|
||
|
|
// <description><rtcp-mux/></description>
|
||
|
|
// see http://code.google.com/p/libjingle/issues/detail?id=309 -- no spec though
|
||
|
|
// and http://mail.jabber.org/pipermail/jingle/2011-December/001761.html
|
||
|
|
if (desc.find('rtcp-mux').length) {
|
||
|
|
media += 'a=rtcp-mux\r\n';
|
||
|
|
}
|
||
|
|
|
||
|
|
if (desc.find('encryption').length) {
|
||
|
|
desc.find('encryption>crypto').each(function () {
|
||
|
|
media += 'a=crypto:' + this.getAttribute('tag');
|
||
|
|
media += ' ' + this.getAttribute('crypto-suite');
|
||
|
|
media += ' ' + this.getAttribute('key-params');
|
||
|
|
if (this.getAttribute('session-params')) {
|
||
|
|
media += ' ' + this.getAttribute('session-params');
|
||
|
|
}
|
||
|
|
media += '\r\n';
|
||
|
|
});
|
||
|
|
}
|
||
|
|
desc.find('payload-type').each(function () {
|
||
|
|
media += SDPUtil.build_rtpmap(this) + '\r\n';
|
||
|
|
if ($(this).find('>parameter').length) {
|
||
|
|
media += 'a=fmtp:' + this.getAttribute('id') + ' ';
|
||
|
|
media += $(this).find('parameter').map(function () { return (this.getAttribute('name') ? (this.getAttribute('name') + '=') : '') + this.getAttribute('value'); }).get().join('; ');
|
||
|
|
media += '\r\n';
|
||
|
|
}
|
||
|
|
// xep-0293
|
||
|
|
media += self.RtcpFbFromJingle($(this), this.getAttribute('id'));
|
||
|
|
});
|
||
|
|
|
||
|
|
// xep-0293
|
||
|
|
media += self.RtcpFbFromJingle(desc, '*');
|
||
|
|
|
||
|
|
// xep-0294
|
||
|
|
tmp = desc.find('>rtp-hdrext[xmlns="urn:xmpp:jingle:apps:rtp:rtp-hdrext:0"]');
|
||
|
|
tmp.each(function () {
|
||
|
|
media += 'a=extmap:' + this.getAttribute('id') + ' ' + this.getAttribute('uri') + '\r\n';
|
||
|
|
});
|
||
|
|
|
||
|
|
content.find('>bundle>transport[xmlns="urn:xmpp:jingle:transports:ice-udp:1"]>candidate').each(function () {
|
||
|
|
media += SDPUtil.candidateFromJingle(this);
|
||
|
|
});
|
||
|
|
|
||
|
|
// XEP-0339 handle ssrc-group attributes
|
||
|
|
tmp = content.find('description>ssrc-group[xmlns="urn:xmpp:jingle:apps:rtp:ssma:0"]').each(function() {
|
||
|
|
var semantics = this.getAttribute('semantics');
|
||
|
|
var ssrcs = $(this).find('>source').map(function() {
|
||
|
|
return this.getAttribute('ssrc');
|
||
|
|
}).get();
|
||
|
|
|
||
|
|
if (ssrcs.length != 0) {
|
||
|
|
media += 'a=ssrc-group:' + semantics + ' ' + ssrcs.join(' ') + '\r\n';
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
tmp = content.find('description>source[xmlns="urn:xmpp:jingle:apps:rtp:ssma:0"]');
|
||
|
|
tmp.each(function () {
|
||
|
|
var ssrc = this.getAttribute('ssrc');
|
||
|
|
$(this).find('>parameter').each(function () {
|
||
|
|
media += 'a=ssrc:' + ssrc + ' ' + this.getAttribute('name');
|
||
|
|
if (this.getAttribute('value') && this.getAttribute('value').length)
|
||
|
|
media += ':' + this.getAttribute('value');
|
||
|
|
media += '\r\n';
|
||
|
|
});
|
||
|
|
});
|
||
|
|
|
||
|
|
if (tmp.length === 0) {
|
||
|
|
// fallback to proprietary mapping of a=ssrc lines
|
||
|
|
tmp = content.find('description>ssrc[xmlns="http://estos.de/ns/ssrc"]');
|
||
|
|
if (tmp.length) {
|
||
|
|
media += 'a=ssrc:' + ssrc + ' cname:' + tmp.attr('cname') + '\r\n';
|
||
|
|
media += 'a=ssrc:' + ssrc + ' msid:' + tmp.attr('msid') + '\r\n';
|
||
|
|
media += 'a=ssrc:' + ssrc + ' mslabel:' + tmp.attr('mslabel') + '\r\n';
|
||
|
|
media += 'a=ssrc:' + ssrc + ' label:' + tmp.attr('label') + '\r\n';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return media;
|
||
|
|
};
|
||
|
|
|