Initial commit

node_modules/engine.io/lib/transport.js

@@ -0,0 +1,128 @@
+
+/**
+ * Module dependencies.
+ */
+
+var EventEmitter = require('events').EventEmitter;
+var parser = require('engine.io-parser');
+var util = require('util');
+var debug = require('debug')('engine:transport');
+
+/**
+ * Expose the constructor.
+ */
+
+module.exports = Transport;
+
+/**
+ * Noop function.
+ *
+ * @api private
+ */
+
+function noop () {}
+
+/**
+ * Transport constructor.
+ *
+ * @param {http.IncomingMessage} request
+ * @api public
+ */
+
+function Transport (req) {
+  this.readyState = 'open';
+  this.discarded = false;
+}
+
+/**
+ * Inherits from EventEmitter.
+ */
+
+util.inherits(Transport, EventEmitter);
+
+/**
+ * Flags the transport as discarded.
+ *
+ * @api private
+ */
+
+Transport.prototype.discard = function () {
+  this.discarded = true;
+};
+
+/**
+ * Called with an incoming HTTP request.
+ *
+ * @param {http.IncomingMessage} request
+ * @api private
+ */
+
+Transport.prototype.onRequest = function (req) {
+  debug('setting request');
+  this.req = req;
+};
+
+/**
+ * Closes the transport.
+ *
+ * @api private
+ */
+
+Transport.prototype.close = function (fn) {
+  if ('closed' === this.readyState || 'closing' === this.readyState) return;
+
+  this.readyState = 'closing';
+  this.doClose(fn || noop);
+};
+
+/**
+ * Called with a transport error.
+ *
+ * @param {String} message error
+ * @param {Object} error description
+ * @api private
+ */
+
+Transport.prototype.onError = function (msg, desc) {
+  if (this.listeners('error').length) {
+    var err = new Error(msg);
+    err.type = 'TransportError';
+    err.description = desc;
+    this.emit('error', err);
+  } else {
+    debug('ignored transport error %s (%s)', msg, desc);
+  }
+};
+
+/**
+ * Called with parsed out a packets from the data stream.
+ *
+ * @param {Object} packet
+ * @api private
+ */
+
+Transport.prototype.onPacket = function (packet) {
+  this.emit('packet', packet);
+};
+
+/**
+ * Called with the encoded packet data.
+ *
+ * @param {String} data
+ * @api private
+ */
+
+Transport.prototype.onData = function (data) {
+  this.onPacket(parser.decodePacket(data));
+};
+
+/**
+ * Called upon transport close.
+ *
+ * @api private
+ */
+
+Transport.prototype.onClose = function () {
+  this.readyState = 'closed';
+  this.emit('close');
+};