From 67fdec20726e48ba3a934cb25bb30d47ec4a4f29 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Yaroslav=20De=20La=20Pe=C3=B1a=20Smirnov?= Date: Wed, 29 Nov 2017 11:44:34 +0300 Subject: Initial commit, version 0.5.3 --- node_modules/socket.io-client/lib/socket.js | 418 ++++++++++++++++++++++++++++ 1 file changed, 418 insertions(+) create mode 100644 node_modules/socket.io-client/lib/socket.js (limited to 'node_modules/socket.io-client/lib/socket.js') diff --git a/node_modules/socket.io-client/lib/socket.js b/node_modules/socket.io-client/lib/socket.js new file mode 100644 index 0000000..702c602 --- /dev/null +++ b/node_modules/socket.io-client/lib/socket.js @@ -0,0 +1,418 @@ + +/** + * Module dependencies. + */ + +var parser = require('socket.io-parser'); +var Emitter = require('component-emitter'); +var toArray = require('to-array'); +var on = require('./on'); +var bind = require('component-bind'); +var debug = require('debug')('socket.io-client:socket'); +var parseqs = require('parseqs'); + +/** + * Module exports. + */ + +module.exports = exports = Socket; + +/** + * Internal events (blacklisted). + * These events can't be emitted by the user. + * + * @api private + */ + +var events = { + connect: 1, + connect_error: 1, + connect_timeout: 1, + connecting: 1, + disconnect: 1, + error: 1, + reconnect: 1, + reconnect_attempt: 1, + reconnect_failed: 1, + reconnect_error: 1, + reconnecting: 1, + ping: 1, + pong: 1 +}; + +/** + * Shortcut to `Emitter#emit`. + */ + +var emit = Emitter.prototype.emit; + +/** + * `Socket` constructor. + * + * @api public + */ + +function Socket (io, nsp, opts) { + this.io = io; + this.nsp = nsp; + this.json = this; // compat + this.ids = 0; + this.acks = {}; + this.receiveBuffer = []; + this.sendBuffer = []; + this.connected = false; + this.disconnected = true; + if (opts && opts.query) { + this.query = opts.query; + } + if (this.io.autoConnect) this.open(); +} + +/** + * Mix in `Emitter`. + */ + +Emitter(Socket.prototype); + +/** + * Subscribe to open, close and packet events + * + * @api private + */ + +Socket.prototype.subEvents = function () { + if (this.subs) return; + + var io = this.io; + this.subs = [ + on(io, 'open', bind(this, 'onopen')), + on(io, 'packet', bind(this, 'onpacket')), + on(io, 'close', bind(this, 'onclose')) + ]; +}; + +/** + * "Opens" the socket. + * + * @api public + */ + +Socket.prototype.open = +Socket.prototype.connect = function () { + if (this.connected) return this; + + this.subEvents(); + this.io.open(); // ensure open + if ('open' === this.io.readyState) this.onopen(); + this.emit('connecting'); + return this; +}; + +/** + * Sends a `message` event. + * + * @return {Socket} self + * @api public + */ + +Socket.prototype.send = function () { + var args = toArray(arguments); + args.unshift('message'); + this.emit.apply(this, args); + return this; +}; + +/** + * Override `emit`. + * If the event is in `events`, it's emitted normally. + * + * @param {String} event name + * @return {Socket} self + * @api public + */ + +Socket.prototype.emit = function (ev) { + if (events.hasOwnProperty(ev)) { + emit.apply(this, arguments); + return this; + } + + var args = toArray(arguments); + var packet = { type: parser.EVENT, data: args }; + + packet.options = {}; + packet.options.compress = !this.flags || false !== this.flags.compress; + + // event ack callback + if ('function' === typeof args[args.length - 1]) { + debug('emitting packet with ack id %d', this.ids); + this.acks[this.ids] = args.pop(); + packet.id = this.ids++; + } + + if (this.connected) { + this.packet(packet); + } else { + this.sendBuffer.push(packet); + } + + delete this.flags; + + return this; +}; + +/** + * Sends a packet. + * + * @param {Object} packet + * @api private + */ + +Socket.prototype.packet = function (packet) { + packet.nsp = this.nsp; + this.io.packet(packet); +}; + +/** + * Called upon engine `open`. + * + * @api private + */ + +Socket.prototype.onopen = function () { + debug('transport is open - connecting'); + + // write connect packet if necessary + if ('/' !== this.nsp) { + if (this.query) { + var query = typeof this.query === 'object' ? parseqs.encode(this.query) : this.query; + debug('sending connect packet with query %s', query); + this.packet({type: parser.CONNECT, query: query}); + } else { + this.packet({type: parser.CONNECT}); + } + } +}; + +/** + * Called upon engine `close`. + * + * @param {String} reason + * @api private + */ + +Socket.prototype.onclose = function (reason) { + debug('close (%s)', reason); + this.connected = false; + this.disconnected = true; + delete this.id; + this.emit('disconnect', reason); +}; + +/** + * Called with socket packet. + * + * @param {Object} packet + * @api private + */ + +Socket.prototype.onpacket = function (packet) { + if (packet.nsp !== this.nsp) return; + + switch (packet.type) { + case parser.CONNECT: + this.onconnect(); + break; + + case parser.EVENT: + this.onevent(packet); + break; + + case parser.BINARY_EVENT: + this.onevent(packet); + break; + + case parser.ACK: + this.onack(packet); + break; + + case parser.BINARY_ACK: + this.onack(packet); + break; + + case parser.DISCONNECT: + this.ondisconnect(); + break; + + case parser.ERROR: + this.emit('error', packet.data); + break; + } +}; + +/** + * Called upon a server event. + * + * @param {Object} packet + * @api private + */ + +Socket.prototype.onevent = function (packet) { + var args = packet.data || []; + debug('emitting event %j', args); + + if (null != packet.id) { + debug('attaching ack callback to event'); + args.push(this.ack(packet.id)); + } + + if (this.connected) { + emit.apply(this, args); + } else { + this.receiveBuffer.push(args); + } +}; + +/** + * Produces an ack callback to emit with an event. + * + * @api private + */ + +Socket.prototype.ack = function (id) { + var self = this; + var sent = false; + return function () { + // prevent double callbacks + if (sent) return; + sent = true; + var args = toArray(arguments); + debug('sending ack %j', args); + + self.packet({ + type: parser.ACK, + id: id, + data: args + }); + }; +}; + +/** + * Called upon a server acknowlegement. + * + * @param {Object} packet + * @api private + */ + +Socket.prototype.onack = function (packet) { + var ack = this.acks[packet.id]; + if ('function' === typeof ack) { + debug('calling ack %s with %j', packet.id, packet.data); + ack.apply(this, packet.data); + delete this.acks[packet.id]; + } else { + debug('bad ack %s', packet.id); + } +}; + +/** + * Called upon server connect. + * + * @api private + */ + +Socket.prototype.onconnect = function () { + this.connected = true; + this.disconnected = false; + this.emit('connect'); + this.emitBuffered(); +}; + +/** + * Emit buffered events (received and emitted). + * + * @api private + */ + +Socket.prototype.emitBuffered = function () { + var i; + for (i = 0; i < this.receiveBuffer.length; i++) { + emit.apply(this, this.receiveBuffer[i]); + } + this.receiveBuffer = []; + + for (i = 0; i < this.sendBuffer.length; i++) { + this.packet(this.sendBuffer[i]); + } + this.sendBuffer = []; +}; + +/** + * Called upon server disconnect. + * + * @api private + */ + +Socket.prototype.ondisconnect = function () { + debug('server disconnect (%s)', this.nsp); + this.destroy(); + this.onclose('io server disconnect'); +}; + +/** + * Called upon forced client/server side disconnections, + * this method ensures the manager stops tracking us and + * that reconnections don't get triggered for this. + * + * @api private. + */ + +Socket.prototype.destroy = function () { + if (this.subs) { + // clean subscriptions to avoid reconnections + for (var i = 0; i < this.subs.length; i++) { + this.subs[i].destroy(); + } + this.subs = null; + } + + this.io.destroy(this); +}; + +/** + * Disconnects the socket manually. + * + * @return {Socket} self + * @api public + */ + +Socket.prototype.close = +Socket.prototype.disconnect = function () { + if (this.connected) { + debug('performing disconnect (%s)', this.nsp); + this.packet({ type: parser.DISCONNECT }); + } + + // remove socket from pool + this.destroy(); + + if (this.connected) { + // fire events + this.onclose('io client disconnect'); + } + return this; +}; + +/** + * Sets the compress flag. + * + * @param {Boolean} if `true`, compresses the sending data + * @return {Socket} self + * @api public + */ + +Socket.prototype.compress = function (compress) { + this.flags = this.flags || {}; + this.flags.compress = compress; + return this; +}; -- cgit v1.2.3