First commit

hGameTest/node_modules/sockjs-client/lib/transport/receiver/eventsource.js

@@ -0,0 +1,63 @@
+'use strict';
+
+var inherits = require('inherits')
+  , EventEmitter = require('events').EventEmitter
+  , EventSourceDriver = require('eventsource')
+  ;
+
+var debug = function() {};
+if (process.env.NODE_ENV !== 'production') {
+  debug = require('debug')('sockjs-client:receiver:eventsource');
+}
+
+function EventSourceReceiver(url) {
+  debug(url);
+  EventEmitter.call(this);
+
+  var self = this;
+  var es = this.es = new EventSourceDriver(url);
+  es.onmessage = function(e) {
+    debug('message', e.data);
+    self.emit('message', decodeURI(e.data));
+  };
+  es.onerror = function(e) {
+    debug('error', es.readyState, e);
+    // ES on reconnection has readyState = 0 or 1.
+    // on network error it's CLOSED = 2
+    var reason = (es.readyState !== 2 ? 'network' : 'permanent');
+    self._cleanup();
+    self._close(reason);
+  };
+}
+
+inherits(EventSourceReceiver, EventEmitter);
+
+EventSourceReceiver.prototype.abort = function() {
+  debug('abort');
+  this._cleanup();
+  this._close('user');
+};
+
+EventSourceReceiver.prototype._cleanup = function() {
+  debug('cleanup');
+  var es = this.es;
+  if (es) {
+    es.onmessage = es.onerror = null;
+    es.close();
+    this.es = null;
+  }
+};
+
+EventSourceReceiver.prototype._close = function(reason) {
+  debug('close', reason);
+  var self = this;
+  // Safari and chrome < 15 crash if we close window before
+  // waiting for ES cleanup. See:
+  // https://code.google.com/p/chromium/issues/detail?id=89155
+  setTimeout(function() {
+    self.emit('close', null, reason);
+    self.removeAllListeners();
+  }, 200);
+};
+
+module.exports = EventSourceReceiver;