162 lines
2.9 KiB
JavaScript
162 lines
2.9 KiB
JavaScript
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/**
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* Module dependencies.
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*/
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var parser = require('engine.io-parser');
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var Emitter = require('component-emitter');
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/**
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* Module exports.
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*/
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module.exports = Transport;
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/**
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* Transport abstract constructor.
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*
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* @param {Object} options.
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* @api private
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*/
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function Transport (opts) {
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this.path = opts.path;
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this.hostname = opts.hostname;
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this.port = opts.port;
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this.secure = opts.secure;
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this.query = opts.query;
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this.timestampParam = opts.timestampParam;
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this.timestampRequests = opts.timestampRequests;
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this.readyState = '';
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this.agent = opts.agent || false;
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this.socket = opts.socket;
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this.enablesXDR = opts.enablesXDR;
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this.withCredentials = opts.withCredentials;
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// SSL options for Node.js client
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this.pfx = opts.pfx;
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this.key = opts.key;
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this.passphrase = opts.passphrase;
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this.cert = opts.cert;
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this.ca = opts.ca;
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this.ciphers = opts.ciphers;
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this.rejectUnauthorized = opts.rejectUnauthorized;
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this.forceNode = opts.forceNode;
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// results of ReactNative environment detection
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this.isReactNative = opts.isReactNative;
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// other options for Node.js client
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this.extraHeaders = opts.extraHeaders;
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this.localAddress = opts.localAddress;
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}
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/**
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* Mix in `Emitter`.
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*/
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Emitter(Transport.prototype);
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/**
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* Emits an error.
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*
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* @param {String} str
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* @return {Transport} for chaining
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* @api public
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*/
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Transport.prototype.onError = function (msg, desc) {
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var err = new Error(msg);
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err.type = 'TransportError';
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err.description = desc;
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this.emit('error', err);
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return this;
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};
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/**
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* Opens the transport.
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*
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* @api public
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*/
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Transport.prototype.open = function () {
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if ('closed' === this.readyState || '' === this.readyState) {
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this.readyState = 'opening';
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this.doOpen();
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}
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return this;
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};
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/**
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* Closes the transport.
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*
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* @api private
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*/
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Transport.prototype.close = function () {
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if ('opening' === this.readyState || 'open' === this.readyState) {
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this.doClose();
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this.onClose();
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}
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return this;
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};
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/**
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* Sends multiple packets.
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*
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* @param {Array} packets
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* @api private
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*/
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Transport.prototype.send = function (packets) {
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if ('open' === this.readyState) {
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this.write(packets);
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} else {
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throw new Error('Transport not open');
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}
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};
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/**
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* Called upon open
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*
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* @api private
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*/
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Transport.prototype.onOpen = function () {
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this.readyState = 'open';
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this.writable = true;
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this.emit('open');
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};
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/**
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* Called with data.
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*
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* @param {String} data
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* @api private
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*/
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Transport.prototype.onData = function (data) {
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var packet = parser.decodePacket(data, this.socket.binaryType);
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this.onPacket(packet);
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};
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/**
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* Called with a decoded packet.
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*/
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Transport.prototype.onPacket = function (packet) {
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this.emit('packet', packet);
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};
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/**
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* Called upon close.
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*
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* @api private
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*/
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Transport.prototype.onClose = function () {
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this.readyState = 'closed';
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this.emit('close');
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};
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