Send messages to the client

Ooui/Client.js

@@ -12,5 +12,5 @@ socket.addEventListener('open', function (event) {
 
 // Listen for messages
 socket.addEventListener('message', function (event) {
-    console.log('Message from server', event.data);
+    console.log('Message from server', JSON.parse (event.data));
 });

Ooui/Message.cs

@@ -1,13 +1,26 @@
 using System;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace Ooui
 {
     public class Message
     {
+        [JsonProperty("t")]
+        [JsonConverter (typeof (MillisecondEpochConverter))]
         public DateTime CreatedTime = DateTime.UtcNow;
+
+        [JsonProperty("m")]
+        [JsonConverter (typeof (StringEnumConverter))]
         public MessageType MessageType = MessageType.Nop;
+
+        [JsonProperty("id")]
         public string TargetId = "";
-        public string Member = "";
+
+        [JsonProperty("k")]
+        public string Key = "";
+
+        [JsonProperty("v")]
         public string Value = "";
 
         public void SetValue (object value)
@@ -20,7 +33,7 @@ namespace Ooui
                     Value = EncodeString (s);
                     break;
                 default:
-                    Value = String.Format (System.Globalization.CultureInfo.InvariantCulture, "{0}", value);
+                    Value = JsonConvert.SerializeObject (value);
                     break;
             }
         }
@@ -42,4 +55,20 @@ namespace Ooui
         Set,
         Call,
     }
+
+    class MillisecondEpochConverter : DateTimeConverterBase
+    {
+        private static readonly DateTime epoch = new DateTime (1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
+
+        public override void WriteJson (JsonWriter writer, object value, JsonSerializer serializer)
+        {
+            writer.WriteRawValue (((DateTime)value - epoch).TotalMilliseconds.ToString (System.Globalization.CultureInfo.InvariantCulture));
+        }
+
+        public override object ReadJson (JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+        {
+            if (reader.Value == null) return null;
+            return epoch.AddMilliseconds ((double)reader.Value);
+        }
+    }
 }

Ooui/Node.cs

@@ -14,6 +14,13 @@ namespace Ooui
         readonly List<Message> messages = new List<Message> ();
         readonly List<Message> stateMessages = new List<Message> ();
 
+        public event Action<Message> MessageLogged;
+
+        public IEnumerable<Message> AllMessages =>
+            messages
+            .Concat (from c in children from m in c.AllMessages select m)
+            .OrderBy (x => x.CreatedTime);
+
         public Node ()
         {
             Mapping = Mapping.Get (GetType ());
@@ -66,7 +73,7 @@ namespace Ooui
                     {
                         var old = stateMessages.FirstOrDefault (
                             x => x.MessageType == MessageType.Set &&
-                                x.Member == message.Member);
+                                x.Key == message.Key);
                         if (old != null) {
                             stateMessages.Remove (old);
                         }
@@ -74,6 +81,8 @@ namespace Ooui
                     }
                     break;
             }
+
+            MessageLogged?.Invoke (message);
         }
 
         protected void LogCreate ()
@@ -90,7 +99,7 @@ namespace Ooui
             Log (new Message {
                 MessageType = MessageType.Call,
                 TargetId = Id,
-                Member = methodName,
+                Key = methodName,
             });
         }
 
@@ -99,13 +108,13 @@ namespace Ooui
             var m = new Message {
                 MessageType = MessageType.Set,
                 TargetId = Id,
-                Member = Mapping.GetMemberPath (propertyName),
+                Key = Mapping.GetMemberPath (propertyName),
             };
             m.SetValue (value);
             Log (m);
         }
 
-        protected bool SetProperty<T> (ref T backingStore, T newValue, string propertyName = "")
+        protected bool SetProperty<T> (ref T backingStore, T newValue, [System.Runtime.CompilerServices.CallerMemberName] string propertyName = "")
         {
             if (!backingStore.Equals (newValue)) {
                 backingStore = newValue;

Ooui/Server.cs

@@ -129,6 +129,9 @@ namespace Ooui
 
         async void ProcessWebSocketRequest (HttpListenerContext listenerContext, CancellationToken token)
         {
+            //
+            // Find the element
+            //
             var url = listenerContext.Request.Url;
             var path = url.LocalPath;
 
@@ -150,9 +153,14 @@ namespace Ooui
                 return;
             }
 
+            //
+            // Connect the web socket
+            //
             WebSocketContext webSocketContext = null;
+            WebSocket webSocket = null;
             try {
                 webSocketContext = await listenerContext.AcceptWebSocketAsync(subProtocol: "ooui-1.0").ConfigureAwait (false);
+                webSocket = webSocketContext.WebSocket;
                 Console.WriteLine ("WEBSOCKET {0}", listenerContext.Request.Url.LocalPath);
             }
             catch (Exception ex) {
@@ -162,9 +170,30 @@ namespace Ooui
                 return;
             }
 
-            WebSocket webSocket = null;
+
+            //
+            // Preparse handlers for the element
+            //
+            Action<Message> onElementMessage = async m => {
+                if (webSocket == null) return;
+                try {
+                    await SendMessageAsync (webSocket, m, token);
+                }
+                catch (Exception ex) {
+                    Error ("Failed to handled element message", ex);
+                }
+            };
+
+            //
+            // Communicate!
+            //
             try {
-                webSocket = webSocketContext.WebSocket;
+                foreach (var m in element.AllMessages) {
+                    if (webSocket.State == WebSocketState.Open) {
+                        await SendMessageAsync (webSocket, m, token);
+                    }
+                }
+                element.MessageLogged += onElementMessage;
 
                 var receiveBuffer = new byte[1024];
 
@@ -190,8 +219,8 @@ namespace Ooui
                         var receivedString = Encoding.UTF8.GetString (receiveBuffer, 0, size);
                         Console.WriteLine ("RECEIVED: {0}", receivedString);
 
-                        var outputBuffer = new ArraySegment<byte> (Encoding.UTF8.GetBytes ($"You said: {receivedString}"));
-                        await webSocket.SendAsync (outputBuffer, WebSocketMessageType.Text, true, token).ConfigureAwait (false);
+                        // var outputBuffer = new ArraySegment<byte> (Encoding.UTF8.GetBytes ($"You said: {receivedString}"));
+                        // await webSocket.SendAsync (outputBuffer, WebSocketMessageType.Text, true, token).ConfigureAwait (false);
                     }
                 }
             }
@@ -202,10 +231,18 @@ namespace Ooui
                 Error ("Failed to process web socket", ex);
             }
             finally {
+                element.MessageLogged -= onElementMessage;
                 webSocket?.Dispose ();
             }
         }
 
+        Task SendMessageAsync (WebSocket webSocket, Message message, CancellationToken token)
+        {
+            var json = Newtonsoft.Json.JsonConvert.SerializeObject (message);
+            var outputBuffer = new ArraySegment<byte> (Encoding.UTF8.GetBytes (json));
+            return webSocket.SendAsync (outputBuffer, WebSocketMessageType.Text, true, token);
+        }
+
         void Error (string message, Exception ex)
         {
             Console.ForegroundColor = ConsoleColor.Red;

Samples/Program.cs

@@ -9,6 +9,7 @@ namespace Samples
         {
             var server = new Server ();
             var button = new Button();
+            button.Name = "TestButton";
             server.Publish ("/button", button);
             server.RunAsync ("http://*:8080/").Wait ();
             return 0;