From b60df56157ee1fd0bd4938799bac05a62fda91a1 Mon Sep 17 00:00:00 2001 From: lookshe Date: Sat, 14 Mar 2015 20:45:20 +0100 Subject: initial commit from working version --- .../node_modules/socket.io/lib/transport.js | 516 +++++++++++++++++++++ 1 file changed, 516 insertions(+) create mode 100644 signaling-server/node_modules/socket.io/lib/transport.js (limited to 'signaling-server/node_modules/socket.io/lib/transport.js') diff --git a/signaling-server/node_modules/socket.io/lib/transport.js b/signaling-server/node_modules/socket.io/lib/transport.js new file mode 100644 index 0000000..e04d2ae --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/transport.js @@ -0,0 +1,516 @@ + +/*! + * socket.io-node + * Copyright(c) 2011 LearnBoost + * MIT Licensed + */ + +/** + * Module dependencies. + */ + +var parser = require('./parser'); + +/** + * Expose the constructor. + */ + +exports = module.exports = Transport; + +/** + * Transport constructor. + * + * @api public + */ + +function Transport (mng, data, req) { + this.manager = mng; + this.id = data.id; + this.disconnected = false; + this.drained = true; + this.handleRequest(req); +}; + +/** + * Access the logger. + * + * @api public + */ + +Transport.prototype.__defineGetter__('log', function () { + return this.manager.log; +}); + +/** + * Access the store. + * + * @api public + */ + +Transport.prototype.__defineGetter__('store', function () { + return this.manager.store; +}); + +/** + * Handles a request when it's set. + * + * @api private + */ + +Transport.prototype.handleRequest = function (req) { + this.log.debug('setting request', req.method, req.url); + this.req = req; + + if (req.method == 'GET') { + this.socket = req.socket; + this.open = true; + this.drained = true; + this.setHeartbeatInterval(); + + this.setHandlers(); + this.onSocketConnect(); + } +}; + +/** + * Called when a connection is first set. + * + * @api private + */ + +Transport.prototype.onSocketConnect = function () { }; + +/** + * Sets transport handlers + * + * @api private + */ + +Transport.prototype.setHandlers = function () { + var self = this; + + this.bound = { + end: this.onSocketEnd.bind(this) + , close: this.onSocketClose.bind(this) + , error: this.onSocketError.bind(this) + , drain: this.onSocketDrain.bind(this) + }; + + this.socket.on('end', this.bound.end); + this.socket.on('close', this.bound.close); + this.socket.on('error', this.bound.error); + this.socket.on('drain', this.bound.drain); + + this.handlersSet = true; +}; + +/** + * Removes transport handlers + * + * @api private + */ + +Transport.prototype.clearHandlers = function () { + if (this.handlersSet) { + this.socket.removeListener('end', this.bound.end); + this.socket.removeListener('close', this.bound.close); + this.socket.removeListener('error', this.bound.error); + this.socket.removeListener('drain', this.bound.drain); + } +}; + +/** + * Called when the connection dies + * + * @api private + */ + +Transport.prototype.onSocketEnd = function () { + this.end('socket end'); +}; + +/** + * Called when the connection dies + * + * @api private + */ + +Transport.prototype.onSocketClose = function (error) { + this.end(error ? 'socket error' : 'socket close'); +}; + +/** + * Called when the connection has an error. + * + * @api private + */ + +Transport.prototype.onSocketError = function (err) { + if (this.open) { + this.socket.destroy(); + this.onClose(); + } + + this.log.info('socket error ' + err.stack); +}; + +/** + * Called when the connection is drained. + * + * @api private + */ + +Transport.prototype.onSocketDrain = function () { + this.drained = true; +}; + +/** + * Called upon receiving a heartbeat packet. + * + * @api private + */ + +Transport.prototype.onHeartbeatClear = function () { + this.clearHeartbeatTimeout(); + this.setHeartbeatInterval(); +}; + +/** + * Called upon a forced disconnection. + * + * @api private + */ + +Transport.prototype.onForcedDisconnect = function () { + if (!this.disconnected) { + this.log.info('transport end by forced client disconnection'); + if (this.open) { + this.packet({ type: 'disconnect' }); + } + this.end('booted'); + } +}; + +/** + * Dispatches a packet. + * + * @api private + */ + +Transport.prototype.onDispatch = function (packet, volatile) { + if (volatile) { + this.writeVolatile(packet); + } else { + this.write(packet); + } +}; + +/** + * Sets the close timeout. + */ + +Transport.prototype.setCloseTimeout = function () { + if (!this.closeTimeout) { + var self = this; + + this.closeTimeout = setTimeout(function () { + self.log.debug('fired close timeout for client', self.id); + self.closeTimeout = null; + self.end('close timeout'); + }, this.manager.get('close timeout') * 1000); + + this.log.debug('set close timeout for client', this.id); + } +}; + +/** + * Clears the close timeout. + */ + +Transport.prototype.clearCloseTimeout = function () { + if (this.closeTimeout) { + clearTimeout(this.closeTimeout); + this.closeTimeout = null; + + this.log.debug('cleared close timeout for client', this.id); + } +}; + +/** + * Sets the heartbeat timeout + */ + +Transport.prototype.setHeartbeatTimeout = function () { + if (!this.heartbeatTimeout && this.manager.enabled('heartbeats')) { + var self = this; + + this.heartbeatTimeout = setTimeout(function () { + self.log.debug('fired heartbeat timeout for client', self.id); + self.heartbeatTimeout = null; + self.end('heartbeat timeout'); + }, this.manager.get('heartbeat timeout') * 1000); + + this.log.debug('set heartbeat timeout for client', this.id); + } +}; + +/** + * Clears the heartbeat timeout + * + * @param text + */ + +Transport.prototype.clearHeartbeatTimeout = function () { + if (this.heartbeatTimeout && this.manager.enabled('heartbeats')) { + clearTimeout(this.heartbeatTimeout); + this.heartbeatTimeout = null; + this.log.debug('cleared heartbeat timeout for client', this.id); + } +}; + +/** + * Sets the heartbeat interval. To be called when a connection opens and when + * a heartbeat is received. + * + * @api private + */ + +Transport.prototype.setHeartbeatInterval = function () { + if (!this.heartbeatInterval && this.manager.enabled('heartbeats')) { + var self = this; + + this.heartbeatInterval = setTimeout(function () { + self.heartbeat(); + self.heartbeatInterval = null; + }, this.manager.get('heartbeat interval') * 1000); + + this.log.debug('set heartbeat interval for client', this.id); + } +}; + +/** + * Clears all timeouts. + * + * @api private + */ + +Transport.prototype.clearTimeouts = function () { + this.clearCloseTimeout(); + this.clearHeartbeatTimeout(); + this.clearHeartbeatInterval(); +}; + +/** + * Sends a heartbeat + * + * @api private + */ + +Transport.prototype.heartbeat = function () { + if (this.open) { + this.log.debug('emitting heartbeat for client', this.id); + this.packet({ type: 'heartbeat' }); + this.setHeartbeatTimeout(); + } + + return this; +}; + +/** + * Handles a message. + * + * @param {Object} packet object + * @api private + */ + +Transport.prototype.onMessage = function (packet) { + var current = this.manager.transports[this.id]; + + if ('heartbeat' == packet.type) { + this.log.debug('got heartbeat packet'); + + if (current && current.open) { + current.onHeartbeatClear(); + } else { + this.store.publish('heartbeat-clear', this.id); + } + } else { + if ('disconnect' == packet.type && packet.endpoint == '') { + this.log.debug('got disconnection packet'); + + if (current) { + current.onForcedDisconnect(); + } else { + this.store.publish('disconnect-force', this.id); + } + + return; + } + + if (packet.id && packet.ack != 'data') { + this.log.debug('acknowledging packet automatically'); + + var ack = parser.encodePacket({ + type: 'ack' + , ackId: packet.id + , endpoint: packet.endpoint || '' + }); + + if (current && current.open) { + current.onDispatch(ack); + } else { + this.manager.onClientDispatch(this.id, ack); + this.store.publish('dispatch-remote', this.id, ack); + } + } + + // handle packet locally or publish it + if (current) { + this.manager.onClientMessage(this.id, packet); + } else { + this.store.publish('message-remote', this.id, packet); + } + } +}; + +/** + * Clears the heartbeat interval + * + * @api private + */ + +Transport.prototype.clearHeartbeatInterval = function () { + if (this.heartbeatInterval && this.manager.enabled('heartbeats')) { + clearTimeout(this.heartbeatInterval); + this.heartbeatInterval = null; + this.log.debug('cleared heartbeat interval for client', this.id); + } +}; + +/** + * Finishes the connection and makes sure client doesn't reopen + * + * @api private + */ + +Transport.prototype.disconnect = function (reason) { + this.packet({ type: 'disconnect' }); + this.end(reason); + + return this; +}; + +/** + * Closes the connection. + * + * @api private + */ + +Transport.prototype.close = function () { + if (this.open) { + this.doClose(); + this.onClose(); + } +}; + +/** + * Called upon a connection close. + * + * @api private + */ + +Transport.prototype.onClose = function () { + if (this.open) { + this.setCloseTimeout(); + this.clearHandlers(); + this.open = false; + this.manager.onClose(this.id); + this.store.publish('close', this.id); + } +}; + +/** + * Cleans up the connection, considers the client disconnected. + * + * @api private + */ + +Transport.prototype.end = function (reason) { + if (!this.disconnected) { + this.log.info('transport end (' + reason + ')'); + + var local = this.manager.transports[this.id]; + + this.close(); + this.clearTimeouts(); + this.disconnected = true; + + if (local) { + this.manager.onClientDisconnect(this.id, reason); + } + + this.store.publish('disconnect-remote', this.id, reason); + } +}; + +/** + * Signals that the transport should pause and buffer data. + * + * @api public + */ + +Transport.prototype.discard = function () { + this.log.debug('discarding transport'); + this.discarded = true; + this.clearTimeouts(); + this.clearHandlers(); + + return this; +}; + +/** + * Writes an error packet with the specified reason and advice. + * + * @param {Number} advice + * @param {Number} reason + * @api public + */ + +Transport.prototype.error = function (reason, advice) { + this.packet({ + type: 'error' + , reason: reason + , advice: advice + }); + + this.log.warn(reason, advice ? ('client should ' + advice) : ''); + this.end('error'); +}; + +/** + * Write a packet. + * + * @api public + */ + +Transport.prototype.packet = function (obj) { + return this.write(parser.encodePacket(obj)); +}; + +/** + * Writes a volatile message. + * + * @api private + */ + +Transport.prototype.writeVolatile = function (msg) { + if (this.open) { + if (this.drained) { + this.write(msg); + } else { + this.log.debug('ignoring volatile packet, buffer not drained'); + } + } else { + this.log.debug('ignoring volatile packet, transport not open'); + } +}; -- cgit v1.2.3