updated ethereum.js

1 files changed, 78 insertions, 0 deletions

diff --git a/cmd/ethtest/lib/websocket.js b/cmd/ethtest/lib/websocket.js
new file mode 100644
index 000000000..24a072531
--- /dev/null
+++ b/cmd/ethtest/lib/websocket.js
@@ -0,0 +1,78 @@
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** @file websocket.js
+ * @authors:
+ *   Jeffrey Wilcke <jeff@ethdev.com>
+ *   Marek Kotewicz <marek@ethdev.com>
+ *   Marian Oancea <marian@ethdev.com>
+ * @date 2014
+ */
+
+// TODO: work out which of the following two lines it is supposed to be...
+//if (process.env.NODE_ENV !== 'build') {
+if ("build" !== "build") {/*
+    var WebSocket = require('ws'); // jshint ignore:line
+*/}
+
+var WebSocketProvider = function(host) {
+    // onmessage handlers
+    this.handlers = [];
+    // queue will be filled with messages if send is invoked before the ws is ready
+    this.queued = [];
+    this.ready = false;
+
+    this.ws = new WebSocket(host);
+
+    var self = this;
+    this.ws.onmessage = function(event) {
+        for(var i = 0; i < self.handlers.length; i++) {
+            self.handlers[i].call(self, JSON.parse(event.data), event);
+        }
+    };
+
+    this.ws.onopen = function() {
+        self.ready = true;
+
+        for(var i = 0; i < self.queued.length; i++) {
+            // Resend
+            self.send(self.queued[i]);
+        }
+    };
+};
+
+WebSocketProvider.prototype.send = function(payload) {
+    if(this.ready) {
+        var data = JSON.stringify(payload);
+
+        this.ws.send(data);
+    } else {
+        this.queued.push(payload);
+    }
+};
+
+WebSocketProvider.prototype.onMessage = function(handler) {
+    this.handlers.push(handler);
+};
+
+WebSocketProvider.prototype.unload = function() {
+    this.ws.close();
+};
+Object.defineProperty(WebSocketProvider.prototype, "onmessage", {
+    set: function(provider) { this.onMessage(provider); }
+});
+
+module.exports = WebSocketProvider;