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Keep track of stream direction.

Browse source 
This simplifies the interface since close does the right thing
without help from the application.  Also improves error checking.
This commit is contained in:
Juliusz Chroboczek 2020-12-05 20:27:32 +01:00
parent 1c5bce2a38
commit f002a83806
2 changed files with 26 additions and 13 deletions
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35
static/protocol.js
View file

@ -253,7 +253,7 @@ ServerConnection.prototype.connect = async function(url) {
for(let id in sc.down) {
let c = sc.down[id];
delete(sc.down[id]);
c.close(false);
c.close();
if(c.onclose)
c.onclose.call(c);
}
@ -423,9 +423,9 @@ ServerConnection.prototype.newUpStream = function(id) {
if(!pc)
throw new Error("Couldn't create peer connection");
if(sc.up[id]) {
sc.up[id].close(false);
sc.up[id].close();
}
let c = new Stream(this, id, pc);
let c = new Stream(this, id, pc, true);
sc.up[id] = c;
pc.onnegotiationneeded = async e => {
@ -545,15 +545,18 @@ ServerConnection.prototype.gotOffer = async function(id, labels, offer, renegoti
// Unless the server indicates that this is a renegotiation with
// all parameters unchanged, tear down the existing connection.
delete(sc.down[id]);
c.close(false);
c.close();
c = null;
}
if(sc.up[id])
throw new Error('Duplicate connection id');
if(!c) {
let pc = new RTCPeerConnection({
iceServers: this.iceServers,
});
c = new Stream(this, id, pc);
c = new Stream(this, id, pc, false);
sc.down[id] = c;
c.pc.onicecandidate = function(e) {
@ -681,7 +684,7 @@ ServerConnection.prototype.gotClose = function(id) {
if(!c)
throw new Error('unknown down stream');
delete(this.down[id]);
c.close(false);
c.close();
if(c.onclose)
c.onclose.call(c);
};
@ -730,7 +733,7 @@ ServerConnection.prototype.gotRemoteIce = async function(id, candidate) {
*
* @constructor
*/
function Stream(sc, id, pc) {
function Stream(sc, id, pc, up) {
/**
* The associated ServerConnection.
*
@ -745,6 +748,13 @@ function Stream(sc, id, pc) {
* @const
*/
this.id = id;
/**
* Indicates whether the stream is in the client->server direction.
*
* @type {boolean}
* @const
*/
this.up = up
/**
* For up streams, one of "local" or "screenshare".
*
@ -884,10 +894,9 @@ function Stream(sc, id, pc) {
}
/**
* close closes an up stream. It should not be called for down streams.
* @param {boolean} sendclose - whether to send a close message to the server
* close closes a stream.
*/
Stream.prototype.close = function(sendclose) {
Stream.prototype.close = function() {
let c = this;
if(c.statsHandler) {
clearInterval(c.statsHandler);
@ -904,7 +913,7 @@ Stream.prototype.close = function(sendclose) {
}
c.pc.close();
if(sendclose) {
if(c.up && c.localDescriptionSent) {
try {
c.sc.send({
type: 'close',
@ -983,6 +992,8 @@ Stream.prototype.flushRemoteIceCandidates = async function () {
*/
Stream.prototype.negotiate = async function (restartIce) {
let c = this;
if(!c.up)
throw new Error('not an up stream');
let options = {};
if(restartIce)
@ -1022,6 +1033,8 @@ Stream.prototype.negotiate = async function (restartIce) {
Stream.prototype.restartIce = function () {
let c = this;
if(!c.up)
throw new Error('not an up stream');
if('restartIce' in c.pc) {
try {

4
static/sfu.js
View file

@ -963,7 +963,7 @@ function delUpMedia(c) {
} catch(e) {
console.warn(e);
}
c.close(true);
c.close();
delete(serverConnection.up[c.id]);
setButtonsVisibility()
}
@ -978,7 +978,7 @@ function delUpMediaKind(kind) {
let c = serverConnection.up[id];
if(kind && c.kind != kind)
continue
c.close(true);
c.close();
delMedia(id);
delete(serverConnection.up[id]);
}