1 files changed, 51 insertions, 0 deletions
diff --git a/cmd/mist/assets/ext/eth.js/websocket.js b/cmd/mist/assets/ext/eth.js/websocket.js
new file mode 100644
index 000000000..732a086f2
--- /dev/null
+++ b/cmd/mist/assets/ext/eth.js/websocket.js
@@ -0,0 +1,51 @@
+(function() {
+    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); }
+    });
+
+    if(typeof(web3) !== "undefined" && web3.providers !== undefined) {
+        web3.providers.WebSocketProvider = WebSocketProvider;
+    }
+})();