mirror of
https://github.com/jech/galene.git
synced 2024-11-22 00:25:58 +01:00
Simplify the initial connection protocol.
The ServerConnection.connect method is no longer async, we rely on the onconnected callback only. The onconnected callback is now only called after the initial handshake completes. There is a new onerror callback.
This commit is contained in:
Juliusz Chroboczek
parent
58934a1a46
commit
7151fad149
3 changed files with 205 additions and 172 deletions
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@ -21,12 +21,12 @@ async function start(url) {
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// connect to the server
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if(token) {
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await serverConnect(status, token);
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serverConnect(status, token);
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} else if(status.authPortal) {
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window.location.href = groupStatus.authPortal
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return;
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} else {
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await serverConnect(status, null);
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serverConnect(status, null);
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}
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}
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@ -46,7 +46,7 @@ function displayStatus(status) {
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* @parm {Object} status
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* @parm {string} token
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*/
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async function serverConnect(status, token) {
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function serverConnect(status, token) {
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// create the connection to the server
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let conn = new ServerConnection();
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conn.onconnected = async function() {
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@ -66,7 +66,7 @@ async function serverConnect(status, token) {
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conn.onjoined = onJoined;
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// connect and wait for the onconnected callback
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await conn.connect(status.endpoint);
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conn.connect(status.endpoint);
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}
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/**
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@ -420,6 +420,10 @@ function gotClose(code, reason) {
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if(code != 1000) {
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console.warn('Socket close', code, reason);
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}
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let form = document.getElementById('userform');
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if(!(form instanceof HTMLFormElement))
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throw new Error('Bad type for userform');
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form.active = true;
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}
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/**
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@ -433,7 +437,7 @@ function gotDownStream(c) {
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};
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c.onerror = function(e) {
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console.error(e);
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displayError(e);
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displayError(e.toString());
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};
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c.ondowntrack = function(track, transceiver, stream) {
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setMedia(c);
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@ -3903,12 +3907,12 @@ function displayMessage(message) {
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return displayError(message, "info");
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}
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let connecting = false;
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document.getElementById('userform').onsubmit = async function(e) {
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e.preventDefault();
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if(connecting)
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return;
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let form = this;
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if(!(form instanceof HTMLFormElement))
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throw new Error('Bad type for userform');
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setVisibility('passwordform', true);
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@ -3921,12 +3925,8 @@ document.getElementById('userform').onsubmit = async function(e) {
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getInputElement('presentoff').checked = true;
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// Connect to the server, gotConnected will join.
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connecting = true;
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try {
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await serverConnect();
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} finally {
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connecting = false;
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}
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form.active = false;
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serverConnect();
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};
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document.getElementById('disconnectbutton').onclick = function(e) {
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@ -3997,6 +3997,10 @@ async function serverConnect() {
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serverConnection.close();
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serverConnection = new ServerConnection();
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serverConnection.onconnected = gotConnected;
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serverConnection.onerror = function(e) {
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console.error(e);
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displayError(e.toString());
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};
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serverConnection.onpeerconnection = onPeerConnection;
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serverConnection.onclose = gotClose;
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serverConnection.ondownstream = gotDownStream;
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@ -152,6 +152,13 @@ function ServerConnection() {
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* @type{(this: ServerConnection) => void}
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*/
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this.onconnected = null;
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/**
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* onerror is called whenever a fatal error occurs. The stream will
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* then be closed, and onclose called normally.
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*
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* @type{(this: ServerConnection, error: unknown) => void}
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*/
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this.onerror = null;
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/**
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* onclose is called when the connection is closed
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*
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@ -263,6 +270,19 @@ ServerConnection.prototype.close = function() {
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this.socket = null;
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};
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/**
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* error forcibly closes a server connection and invokes the onerror
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* callback. The onclose callback will be invoked when the connection
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* is effectively closed.
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*
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* @param {any} e
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*/
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ServerConnection.prototype.error = function(e) {
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if(this.onerror)
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this.onerror.call(this, e);
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this.close();
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};
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/**
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* send sends a message to the server.
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* @param {message} m - the message to send.
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@ -279,191 +299,200 @@ ServerConnection.prototype.send = function(m) {
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* connect connects to the server.
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*
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* @param {string} url - The URL to connect to.
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* @returns {Promise<ServerConnection>}
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* @function
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*/
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ServerConnection.prototype.connect = async function(url) {
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ServerConnection.prototype.connect = function(url) {
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let sc = this;
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if(sc.socket) {
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sc.socket.close(1000, 'Reconnecting');
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sc.socket = null;
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}
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if(sc.socket)
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throw new Error("Attempting to connect stale connection");
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sc.socket = new WebSocket(url);
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return await new Promise((resolve, reject) => {
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this.socket.onerror = function(e) {
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reject(e);
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};
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this.socket.onopen = function(e) {
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this.socket.onerror = function(e) {
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if(sc.onerror)
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sc.onerror.call(sc, new Error('Socket error: ' + e));
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};
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this.socket.onopen = function(e) {
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try {
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sc.send({
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type: 'handshake',
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version: ['2'],
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id: sc.id,
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});
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} catch(e) {
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sc.error(e);
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return;
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}
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};
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this.socket.onclose = function(e) {
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sc.permissions = [];
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for(let id in sc.up) {
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let c = sc.up[id];
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c.close();
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}
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for(let id in sc.down) {
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let c = sc.down[id];
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c.close();
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}
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for(let id in sc.users) {
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delete(sc.users[id]);
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if(sc.onuser)
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sc.onuser.call(sc, id, 'delete');
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}
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if(sc.group && sc.onjoined)
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sc.onjoined.call(sc, 'leave', sc.group, [], {}, {}, '', '');
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sc.group = null;
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sc.username = null;
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if(sc.onclose)
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sc.onclose.call(sc, e.code, e.reason);
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};
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this.socket.onmessage = function(e) {
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let m;
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try {
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m = JSON.parse(e.data);
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} catch(e) {
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sc.error(e);
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return;
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}
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if(m.type !== 'handshake' && !sc.version) {
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sc.error(new Error("Server didn't send handshake"));
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return;
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}
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switch(m.type) {
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case 'handshake': {
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if((m.version instanceof Array) && m.version.includes('2')) {
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sc.version = '2';
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} else {
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sc.version = null;
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sc.error(new Error(`Unknown protocol version ${m.version}`));
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return;
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}
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if(sc.onconnected)
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sc.onconnected.call(sc);
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resolve(sc);
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};
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this.socket.onclose = function(e) {
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sc.permissions = [];
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for(let id in sc.up) {
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let c = sc.up[id];
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c.close();
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}
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for(let id in sc.down) {
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let c = sc.down[id];
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c.close();
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}
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for(let id in sc.users) {
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delete(sc.users[id]);
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if(sc.onuser)
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sc.onuser.call(sc, id, 'delete');
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}
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if(sc.group && sc.onjoined)
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sc.onjoined.call(sc, 'leave', sc.group, [], {}, {}, '', '');
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sc.group = null;
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sc.username = null;
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if(sc.onclose)
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sc.onclose.call(sc, e.code, e.reason);
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reject(new Error('websocket close ' + e.code + ' ' + e.reason));
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};
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this.socket.onmessage = function(e) {
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let m = JSON.parse(e.data);
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switch(m.type) {
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case 'handshake': {
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if((m.version instanceof Array) && m.version.includes('2')) {
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sc.version = '2';
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} else {
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sc.version = null;
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console.error(`Unknown protocol version ${m.version}`);
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throw new Error(`Unknown protocol version ${m.version}`);
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break;
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}
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case 'offer':
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sc.gotOffer(m.id, m.label, m.source, m.username,
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m.sdp, m.replace);
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break;
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case 'answer':
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sc.gotAnswer(m.id, m.sdp);
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break;
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case 'renegotiate':
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sc.gotRenegotiate(m.id);
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break;
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case 'close':
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sc.gotClose(m.id);
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break;
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case 'abort':
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sc.gotAbort(m.id);
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break;
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case 'ice':
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sc.gotRemoteIce(m.id, m.candidate);
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break;
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case 'joined':
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if(m.kind === 'leave' || m.kind === 'fail') {
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for(let id in sc.users) {
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delete(sc.users[id]);
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if(sc.onuser)
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sc.onuser.call(sc, id, 'delete');
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}
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break;
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}
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case 'offer':
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sc.gotOffer(m.id, m.label, m.source, m.username,
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m.sdp, m.replace);
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break;
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case 'answer':
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sc.gotAnswer(m.id, m.sdp);
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break;
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case 'renegotiate':
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sc.gotRenegotiate(m.id);
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break;
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case 'close':
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sc.gotClose(m.id);
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break;
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case 'abort':
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sc.gotAbort(m.id);
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break;
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case 'ice':
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sc.gotRemoteIce(m.id, m.candidate);
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break;
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case 'joined':
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if(m.kind === 'leave' || m.kind === 'fail') {
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for(let id in sc.users) {
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delete(sc.users[id]);
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if(sc.onuser)
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sc.onuser.call(sc, id, 'delete');
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}
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sc.username = null;
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sc.permissions = [];
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sc.rtcConfiguration = null;
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} else if(m.kind === 'join' || m.kind == 'change') {
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if(m.kind === 'join' && sc.group) {
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throw new Error('Joined multiple groups');
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} else if(m.kind === 'change' && m.group != sc.group) {
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console.warn('join(change) for inconsistent group');
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break;
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}
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sc.group = m.group;
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sc.username = m.username;
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sc.permissions = m.permissions || [];
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sc.rtcConfiguration = m.rtcConfiguration || null;
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sc.username = null;
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sc.permissions = [];
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sc.rtcConfiguration = null;
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} else if(m.kind === 'join' || m.kind == 'change') {
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if(m.kind === 'join' && sc.group) {
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throw new Error('Joined multiple groups');
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} else if(m.kind === 'change' && m.group != sc.group) {
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console.warn('join(change) for inconsistent group');
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break;
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}
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if(sc.onjoined)
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sc.onjoined.call(sc, m.kind, m.group,
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m.permissions || [],
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m.status, m.data,
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m.error || null, m.value || null);
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sc.group = m.group;
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sc.username = m.username;
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sc.permissions = m.permissions || [];
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sc.rtcConfiguration = m.rtcConfiguration || null;
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}
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if(sc.onjoined)
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sc.onjoined.call(sc, m.kind, m.group,
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m.permissions || [],
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m.status, m.data,
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m.error || null, m.value || null);
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break;
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case 'user':
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switch(m.kind) {
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case 'add':
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if(m.id in sc.users)
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console.warn(`Duplicate user ${m.id} ${m.username}`);
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sc.users[m.id] = {
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username: m.username,
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permissions: m.permissions || [],
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data: m.data || {},
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streams: {},
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};
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break;
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case 'user':
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switch(m.kind) {
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case 'add':
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if(m.id in sc.users)
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console.warn(`Duplicate user ${m.id} ${m.username}`);
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case 'change':
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if(!(m.id in sc.users)) {
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console.warn(`Unknown user ${m.id} ${m.username}`);
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sc.users[m.id] = {
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username: m.username,
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permissions: m.permissions || [],
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data: m.data || {},
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streams: {},
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};
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break;
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case 'change':
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if(!(m.id in sc.users)) {
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console.warn(`Unknown user ${m.id} ${m.username}`);
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sc.users[m.id] = {
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username: m.username,
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permissions: m.permissions || [],
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data: m.data || {},
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streams: {},
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};
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} else {
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sc.users[m.id].username = m.username;
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sc.users[m.id].permissions = m.permissions || [];
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sc.users[m.id].data = m.data || {};
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}
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break;
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case 'delete':
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if(!(m.id in sc.users))
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console.warn(`Unknown user ${m.id} ${m.username}`);
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for(let t in sc.transferredFiles) {
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let f = sc.transferredFiles[t];
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if(f.userid === m.id)
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f.fail('user has gone away');
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}
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delete(sc.users[m.id]);
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break;
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default:
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console.warn(`Unknown user action ${m.kind}`);
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return;
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} else {
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sc.users[m.id].username = m.username;
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sc.users[m.id].permissions = m.permissions || [];
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sc.users[m.id].data = m.data || {};
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}
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if(sc.onuser)
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sc.onuser.call(sc, m.id, m.kind);
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break;
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case 'chat':
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case 'chathistory':
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if(sc.onchat)
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sc.onchat.call(
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sc, m.source, m.dest, m.username, parseTime(m.time),
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m.privileged, m.type === 'chathistory', m.kind,
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'' + m.value,
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);
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break;
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case 'usermessage':
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if(m.kind === 'filetransfer')
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sc.fileTransfer(m.source, m.username, m.value);
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else if(sc.onusermessage)
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sc.onusermessage.call(
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sc, m.source, m.dest, m.username, parseTime(m.time),
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m.privileged, m.kind, m.error, m.value,
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);
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break;
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case 'ping':
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sc.send({
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type: 'pong',
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});
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break;
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case 'pong':
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/* nothing */
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case 'delete':
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if(!(m.id in sc.users))
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console.warn(`Unknown user ${m.id} ${m.username}`);
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for(let t in sc.transferredFiles) {
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let f = sc.transferredFiles[t];
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if(f.userid === m.id)
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f.fail('user has gone away');
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}
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delete(sc.users[m.id]);
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break;
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default:
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console.warn('Unexpected server message', m.type);
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console.warn(`Unknown user action ${m.kind}`);
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return;
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}
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};
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});
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if(sc.onuser)
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sc.onuser.call(sc, m.id, m.kind);
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break;
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case 'chat':
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case 'chathistory':
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if(sc.onchat)
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sc.onchat.call(
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sc, m.source, m.dest, m.username, parseTime(m.time),
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m.privileged, m.type === 'chathistory', m.kind,
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'' + m.value,
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);
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break;
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case 'usermessage':
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if(m.kind === 'filetransfer')
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sc.fileTransfer(m.source, m.username, m.value);
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else if(sc.onusermessage)
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sc.onusermessage.call(
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sc, m.source, m.dest, m.username, parseTime(m.time),
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m.privileged, m.kind, m.error, m.value,
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);
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break;
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case 'ping':
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sc.send({
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type: 'pong',
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});
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break;
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case 'pong':
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/* nothing */
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break;
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default:
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console.warn('Unexpected server message', m.type);
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return;
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}
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};
|
||||
};
|
||||
|
||||
/**
|
||||
|
|
|
|||
Loading…
Reference in a new issue