1 files changed, 177 insertions, 0 deletions
diff --git a/signaling-server/node_modules/socket.io/node_modules/socket.io-client/lib/transports/xhr-polling.js b/signaling-server/node_modules/socket.io/node_modules/socket.io-client/lib/transports/xhr-polling.js
new file mode 100644
index 0000000..0decb6b
--- /dev/null
+++ b/signaling-server/node_modules/socket.io/node_modules/socket.io-client/lib/transports/xhr-polling.js
@@ -0,0 +1,177 @@
+
+/**
+ * socket.io
+ * Copyright(c) 2011 LearnBoost <dev@learnboost.com>
+ * MIT Licensed
+ */
+
+(function (exports, io, global) {
+
+  /**
+   * Expose constructor.
+   */
+
+  exports['xhr-polling'] = XHRPolling;
+
+  /**
+   * The XHR-polling transport uses long polling XHR requests to create a
+   * "persistent" connection with the server.
+   *
+   * @constructor
+   * @api public
+   */
+
+  function XHRPolling () {
+    io.Transport.XHR.apply(this, arguments);
+  };
+
+  /**
+   * Inherits from XHR transport.
+   */
+
+  io.util.inherit(XHRPolling, io.Transport.XHR);
+
+  /**
+   * Merge the properties from XHR transport
+   */
+
+  io.util.merge(XHRPolling, io.Transport.XHR);
+
+  /**
+   * Transport name
+   *
+   * @api public
+   */
+
+  XHRPolling.prototype.name = 'xhr-polling';
+
+  /**
+   * Indicates whether heartbeats is enabled for this transport
+   *
+   * @api private
+   */
+
+  XHRPolling.prototype.heartbeats = function () {
+    return false;
+  };
+
+  /** 
+   * Establish a connection, for iPhone and Android this will be done once the page
+   * is loaded.
+   *
+   * @returns {Transport} Chaining.
+   * @api public
+   */
+
+  XHRPolling.prototype.open = function () {
+    var self = this;
+
+    io.Transport.XHR.prototype.open.call(self);
+    return false;
+  };
+
+  /**
+   * Starts a XHR request to wait for incoming messages.
+   *
+   * @api private
+   */
+
+  function empty () {};
+
+  XHRPolling.prototype.get = function () {
+    if (!this.isOpen) return;
+
+    var self = this;
+
+    function stateChange () {
+      if (this.readyState == 4) {
+        this.onreadystatechange = empty;
+
+        if (this.status == 200) {
+          self.onData(this.responseText);
+          self.get();
+        } else {
+          self.onClose();
+        }
+      }
+    };
+
+    function onload () {
+      this.onload = empty;
+      this.onerror = empty;
+      self.retryCounter = 1;
+      self.onData(this.responseText);
+      self.get();
+    };
+
+    function onerror () {
+      self.retryCounter ++;
+      if(!self.retryCounter || self.retryCounter > 3) {
+        self.onClose();  
+      } else {
+        self.get();
+      }
+    };
+
+    this.xhr = this.request();
+
+    if (global.XDomainRequest && this.xhr instanceof XDomainRequest) {
+      this.xhr.onload = onload;
+      this.xhr.onerror = onerror;
+    } else {
+      this.xhr.onreadystatechange = stateChange;
+    }
+
+    this.xhr.send(null);
+  };
+
+  /**
+   * Handle the unclean close behavior.
+   *
+   * @api private
+   */
+
+  XHRPolling.prototype.onClose = function () {
+    io.Transport.XHR.prototype.onClose.call(this);
+
+    if (this.xhr) {
+      this.xhr.onreadystatechange = this.xhr.onload = this.xhr.onerror = empty;
+      try {
+        this.xhr.abort();
+      } catch(e){}
+      this.xhr = null;
+    }
+  };
+
+  /**
+   * Webkit based browsers show a infinit spinner when you start a XHR request
+   * before the browsers onload event is called so we need to defer opening of
+   * the transport until the onload event is called. Wrapping the cb in our
+   * defer method solve this.
+   *
+   * @param {Socket} socket The socket instance that needs a transport
+   * @param {Function} fn The callback
+   * @api private
+   */
+
+  XHRPolling.prototype.ready = function (socket, fn) {
+    var self = this;
+
+    io.util.defer(function () {
+      fn.call(self);
+    });
+  };
+
+  /**
+   * Add the transport to your public io.transports array.
+   *
+   * @api private
+   */
+
+  io.transports.push('xhr-polling');
+
+})(
+    'undefined' != typeof io ? io.Transport : module.exports
+  , 'undefined' != typeof io ? io : module.parent.exports
+  , this
+);