* LCIMConversation.cs: chore: 完善消息的编解码

* LCObject.cs:
* LCIMClient.cs:
* Program.cs:
* LCIMMessage.cs:
* LCConnection.cs:
* LCIMTextMessage.cs:
* LCIMFileMessage.cs:
* LCIMVideoMessage.cs:
* LCIMTypedMessage.cs:
* LCIMImageMessage.cs:
* LCIMAudioMessage.cs:
* LCApplicationRealtimeExt.cs:
* LCIMBinaryMessage.cs:
* LCHttpClient.cs:
* LCIMLocationMessage.cs:
* LCJsonConverter.cs:
* LCIMConversationQuery.cs:
* LCWebSocketConnection.cs:

Realtime/Conversation/LCIMConversation.cs

@@ -77,7 +77,7 @@ namespace LeanCloud.Realtime {
             };
             GenericCommand command = client.NewCommand(CommandType.Conv, OpType.Count);
             command.ConvMessage = conv;
-            GenericCommand response = await client.client.SendRequest(command);
+            GenericCommand response = await client.connection.SendRequest(command);
             return response.ConvMessage.Count;
         }
 
@@ -92,7 +92,7 @@ namespace LeanCloud.Realtime {
             };
             GenericCommand request = client.NewCommand(CommandType.Conv, OpType.Update);
             request.ConvMessage = conv;
-            GenericCommand response = await client.client.SendRequest(request);
+            GenericCommand response = await client.connection.SendRequest(request);
             JsonObjectMessage attr = response.ConvMessage.AttrModified;
             // 更新自定义属性
             if (attr != null) {
@@ -122,7 +122,7 @@ namespace LeanCloud.Realtime {
 
             GenericCommand request = client.NewCommand(CommandType.Conv, OpType.Add);
             request.ConvMessage = conv;
-            GenericCommand response = await client.client.SendRequest(request);
+            GenericCommand response = await client.connection.SendRequest(request);
             List<string> allowedIds = response.ConvMessage.AllowedPids.ToList();
             List<ErrorCommand> failedIds = response.ConvMessage.FailedPids.ToList();
             // TODO 转化为返回
@@ -147,7 +147,7 @@ namespace LeanCloud.Realtime {
 
             GenericCommand request = client.NewCommand(CommandType.Conv, OpType.Remove);
             request.ConvMessage = conv;
-            GenericCommand response = await client.client.SendRequest(request);
+            GenericCommand response = await client.connection.SendRequest(request);
             List<string> allowedIds = response.ConvMessage.AllowedPids.ToList();
             List<ErrorCommand> failedIds = response.ConvMessage.FailedPids.ToList();
             // TODO 转化为返回
@@ -180,11 +180,17 @@ namespace LeanCloud.Realtime {
             DirectCommand direct = new DirectCommand {
                 FromPeerId = client.ClientId,
                 Cid = Id,
-                Msg = message.Serialize(),
             };
+            if (message is LCIMTypedMessage typedMessage) {
+                direct.Msg = JsonConvert.SerializeObject(typedMessage.Encode());
+            } else if (message is LCIMBinaryMessage binaryMessage) {
+                direct.BinaryMsg = ByteString.CopyFrom(binaryMessage.Data);
+            } else {
+                throw new ArgumentException("Message MUST BE LCIMTypedMessage or LCIMBinaryMessage.");
+            }
             GenericCommand command = client.NewDirectCommand();
             command.DirectMessage = direct;
-            GenericCommand response = await client.client.SendRequest(command);
+            GenericCommand response = await client.connection.SendRequest(command);
             // 消息发送应答
             AckCommand ack = response.AckMessage;
             message.Id = ack.Uid;
@@ -202,7 +208,7 @@ namespace LeanCloud.Realtime {
             };
             GenericCommand request = client.NewCommand(CommandType.Conv, OpType.Mute);
             request.ConvMessage = conv;
-            GenericCommand response = await client.client.SendRequest(request);
+            GenericCommand response = await client.connection.SendRequest(request);
             IsMute = true;
             return this;
         }
@@ -217,7 +223,7 @@ namespace LeanCloud.Realtime {
             };
             GenericCommand request = client.NewCommand(CommandType.Conv, OpType.Unmute);
             request.ConvMessage = conv;
-            GenericCommand response = await client.client.SendRequest(request);
+            GenericCommand response = await client.connection.SendRequest(request);
             IsMute = false;
             return this;
         }
@@ -237,7 +243,7 @@ namespace LeanCloud.Realtime {
             conv.M.AddRange(clientIds);
             GenericCommand request = client.NewCommand(CommandType.Conv, OpType.AddShutup);
             request.ConvMessage = conv;
-            GenericCommand response = await client.client.SendRequest(request);
+            GenericCommand response = await client.connection.SendRequest(request);
             return NewPartiallySuccessResult(response.ConvMessage.AllowedPids, response.ConvMessage.FailedPids);
         }
 
@@ -256,7 +262,7 @@ namespace LeanCloud.Realtime {
             conv.M.AddRange(clientIds);
             GenericCommand request = client.NewCommand(CommandType.Conv, OpType.Remove);
             request.ConvMessage = conv;
-            GenericCommand response = await client.client.SendRequest(request);
+            GenericCommand response = await client.connection.SendRequest(request);
             return NewPartiallySuccessResult(response.ConvMessage.AllowedPids, response.ConvMessage.FailedPids);
         }
 
@@ -275,7 +281,7 @@ namespace LeanCloud.Realtime {
             blacklist.ToPids.AddRange(clientIds);
             GenericCommand request = client.NewCommand(CommandType.Blacklist, OpType.Block);
             request.BlacklistMessage = blacklist;
-            GenericCommand response = await client.client.SendRequest(request);
+            GenericCommand response = await client.connection.SendRequest(request);
             return NewPartiallySuccessResult(response.BlacklistMessage.AllowedPids, response.BlacklistMessage.FailedPids);
         }
 
@@ -289,7 +295,7 @@ namespace LeanCloud.Realtime {
             blacklist.ToPids.AddRange(clientIds);
             GenericCommand request = client.NewCommand(CommandType.Blacklist, OpType.Unblock);
             request.BlacklistMessage = blacklist;
-            GenericCommand response = await client.client.SendRequest(request);
+            GenericCommand response = await client.connection.SendRequest(request);
             return NewPartiallySuccessResult(response.BlacklistMessage.AllowedPids, response.BlacklistMessage.FailedPids);
         }
 
@@ -311,7 +317,7 @@ namespace LeanCloud.Realtime {
             patch.Patches.Add(item);
             GenericCommand request = client.NewCommand(CommandType.Patch, OpType.Modify);
             request.PatchMessage = patch;
-            GenericCommand response = await client.client.SendRequest(request);
+            GenericCommand response = await client.connection.SendRequest(request);
             return null;
         }
 
@@ -335,11 +341,10 @@ namespace LeanCloud.Realtime {
                 Timestamp = oldMessage.DeliveredTimestamp,
                 Recall = false,
             };
-            if (newMessage.GetText() != null) {
+            if (newMessage is LCIMTypedMessage typedMessage) {
-                item.Data = newMessage.GetText();
+                item.Data = JsonConvert.SerializeObject(typedMessage.Encode());
-            }
+            } else if (newMessage is LCIMBinaryMessage binaryMessage) {
-            if (newMessage.GetBytes() != null) {
+                item.BinaryMsg = ByteString.CopyFrom(binaryMessage.Data);
-                item.BinaryMsg = ByteString.CopyFrom(newMessage.GetBytes());
             }
             if (newMessage.MentionList != null) {
                 item.MentionPids.AddRange(newMessage.MentionList);
@@ -350,7 +355,7 @@ namespace LeanCloud.Realtime {
             patch.Patches.Add(item);
             GenericCommand request = client.NewCommand(CommandType.Patch, OpType.Modify);
             request.PatchMessage = patch;
-            GenericCommand response = await client.client.SendRequest(request);
+            GenericCommand response = await client.connection.SendRequest(request);
             return null;
         }
 
@@ -371,7 +376,7 @@ namespace LeanCloud.Realtime {
             };
             GenericCommand request = client.NewCommand(CommandType.Conv, OpType.MemberInfoUpdate);
             request.ConvMessage = conv;
-            GenericCommand response = await client.client.SendRequest(request);
+            GenericCommand response = await client.connection.SendRequest(request);
             // TODO 同步 members
 
             return this;
@@ -422,7 +427,7 @@ namespace LeanCloud.Realtime {
             };
             GenericCommand request = client.NewCommand(CommandType.Conv, OpType.QueryShutup);
             request.ConvMessage = conv;
-            GenericCommand response = await client.client.SendRequest(request);
+            GenericCommand response = await client.connection.SendRequest(request);
             return new LCIMPageResult {
                 Results = response.ConvMessage.M.ToList(),
                 Next = response.ConvMessage.Next

Realtime/Conversation/LCIMConversationQuery.cs

@@ -245,7 +245,7 @@ namespace LeanCloud.Realtime {
                 conv.Where = JsonObjectMessage.Parser.ParseJson(where);
             }
             command.ConvMessage = conv;
-            GenericCommand response = await client.client.SendRequest(command);
+            GenericCommand response = await client.connection.SendRequest(command);
             JsonObjectMessage results = response.ConvMessage.Results;
             List<LCIMConversation> convList = null;
             // TODO 反序列化

Realtime/Internal/LCConnection.cs

@@ -1,111 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Threading.Tasks;
-using System.Net.WebSockets;
-using Google.Protobuf;
-using LeanCloud.Realtime.Protocol;
-using LeanCloud.Storage;
-
-namespace LeanCloud.Realtime.Internal {
-    internal class LCConnection {
-        private const int KEEP_ALIVE_INTERVAL = 10;
-        private const int RECV_BUFFER_SIZE = 1024;
-
-        private ClientWebSocket ws;
-
-        private volatile int requestI = 1;
-
-        private readonly object requestILock = new object();
-
-        private readonly Dictionary<int, TaskCompletionSource<GenericCommand>> responses;
-
-        internal LCConnection() {
-            responses = new Dictionary<int, TaskCompletionSource<GenericCommand>>();
-        }
-
-        internal async Task Connect() {
-            ws = new ClientWebSocket();
-            ws.Options.AddSubProtocol("lc.protobuf2.3");
-            ws.Options.KeepAliveInterval = TimeSpan.FromSeconds(KEEP_ALIVE_INTERVAL);
-            await ws.ConnectAsync(new Uri(""), default);
-        }
-
-        internal async Task SendRequest(GenericCommand request) {
-            request.I = RequestI;
-            ArraySegment<byte> bytes = new ArraySegment<byte>(request.ToByteArray());
-            try {
-                await ws.SendAsync(bytes, WebSocketMessageType.Binary, true, default);
-            } catch (Exception e) {
-                // TODO 发送消息异常
-
-            }
-        }
-
-        internal async Task Close() {
-            await ws.CloseAsync(WebSocketCloseStatus.NormalClosure, "1", default);
-        }
-
-        private async Task StartReceive() {
-            byte[] buffer = new byte[RECV_BUFFER_SIZE];
-            try {
-                while (ws.State == WebSocketState.Open) {
-                    byte[] data = new byte[0];
-                    WebSocketReceiveResult result;
-                    do {
-                        result = await ws.ReceiveAsync(new ArraySegment<byte>(buffer), default);
-                        if (result.MessageType == WebSocketMessageType.Close) {
-                            // TODO 区分主动断开和被动断开
-
-                            return;
-                        }
-                        // 拼合 WebSocket Frame
-                        byte[] oldData = data;
-                        data = new byte[data.Length + result.Count];
-                        Array.Copy(oldData, data, oldData.Length);
-                        Array.Copy(buffer, 0, data, oldData.Length, result.Count);
-                    } while (!result.EndOfMessage);
-                    try {
-                        GenericCommand command = GenericCommand.Parser.ParseFrom(data);
-                        HandleCommand(command);
-                    } catch (Exception e) {
-                        // 解析消息错误
-
-                    }
-                }
-            } catch (Exception e) {
-                // TODO 连接断开
-
-            }
-        }
-
-        private void HandleCommand(GenericCommand command) {
-            if (command.HasI) {
-                // 应答
-                if (responses.TryGetValue(command.I, out TaskCompletionSource<GenericCommand> tcs)) {
-                    if (command.HasErrorMessage) {
-                        // 错误
-                        ErrorCommand error = command.ErrorMessage;
-                        int code = error.Code;
-                        string detail = error.Detail;
-                        // TODO 包装成异常抛出
-                        LCException exception = new LCException(code, detail);
-                        tcs.SetException(exception);
-                    } else {
-                        tcs.SetResult(command);
-                    }
-                }
-            } else {
-                // 通知
-
-            }
-        }
-
-        private int RequestI {
-            get {
-                lock (requestILock) {
-                    return requestI++;
-                };
-            }
-        }
-    }
-}

Realtime/Internal/WebSocket/LCWebSocketConnection.cs

@@ -9,7 +9,7 @@ using LeanCloud.Common;
 using Google.Protobuf;
 
 namespace LeanCloud.Realtime.Internal.WebSocket {
-    internal class LCWebSocketClient {
+    internal class LCWebSocketConnection {
         private const int KEEP_ALIVE_INTERVAL = 10;
         private const int RECV_BUFFER_SIZE = 1024;
 
@@ -25,7 +25,7 @@ namespace LeanCloud.Realtime.Internal.WebSocket {
             get; set;
         }
 
-        internal LCWebSocketClient() {
+        internal LCWebSocketConnection() {
             responses = new Dictionary<int, TaskCompletionSource<GenericCommand>>();
         }
 

Realtime/LCApplicationRealtimeExt.cs

@@ -5,7 +5,6 @@ using LeanCloud.Realtime.Internal;
 
 namespace LeanCloud {
     public static class LCApplicationRealtimeExt {
-        static LCConnection connection;
 
         public static async Task<LCIMClient> CreateIMClient(this LCApplication application, string clientId) {
             if (string.IsNullOrEmpty(clientId)) {

Realtime/LCIMClient.cs

@@ -9,7 +9,7 @@ using Newtonsoft.Json;
 
 namespace LeanCloud.Realtime {
     public class LCIMClient {
-        internal LCWebSocketClient client;
+        internal LCWebSocketConnection connection;
 
         private Dictionary<string, LCIMConversation> conversationDict;
 
@@ -75,6 +75,10 @@ namespace LeanCloud.Realtime {
             get; set;
         }
 
+        public Action<LCIMConversation, LCIMMessage> OnMessageReceived {
+            get; set;
+        }
+
         public LCIMClient(string clientId) {
             ClientId = clientId;
             conversationDict = new Dictionary<string, LCIMConversation>();
@@ -85,14 +89,14 @@ namespace LeanCloud.Realtime {
         /// </summary>
         /// <returns></returns>
         public async Task Open() {
-            client = new LCWebSocketClient {
+            connection = new LCWebSocketConnection {
                 OnNotification = OnNotification
             };
-            await client.Connect();
+            await connection.Connect();
             // Open Session
             GenericCommand request = NewCommand(CommandType.Session, OpType.Open);
             request.SessionMessage = new SessionCommand();
-            GenericCommand response = await client.SendRequest(request);
+            GenericCommand response = await connection.SendRequest(request);
             SessionToken = response.SessionMessage.St;
         }
 
@@ -101,7 +105,7 @@ namespace LeanCloud.Realtime {
         /// </summary>
         /// <returns></returns>
         public async Task Close() {
-            await client.Close();
+            await connection.Close();
         }
 
         public async Task<LCIMChatRoom> CreateChatRoom(
@@ -154,7 +158,7 @@ namespace LeanCloud.Realtime {
                 };
             }
             command.ConvMessage = conv;
-            GenericCommand response = await client.SendRequest(command);
+            GenericCommand response = await connection.SendRequest(command);
             LCIMConversation conversation = GetOrCreateConversation(response.ConvMessage.Cid);
             conversation.MergeFrom(response.ConvMessage);
             conversationDict[conversation.Id] = conversation;
@@ -210,6 +214,9 @@ namespace LeanCloud.Realtime {
                 case CommandType.Conv:
                     OnConversationNotification(notification);
                     break;
+                case CommandType.Direct:
+                    OnDirectNotification(notification.DirectMessage);
+                    break;
                 default:
                     break;
             }
@@ -270,6 +277,46 @@ namespace LeanCloud.Realtime {
             }
         }
 
+        private void OnDirectNotification(DirectCommand direct) {
+            LCIMMessage message = null;
+            if (direct.HasBinaryMsg) {
+                // 二进制消息
+                byte[] bytes = direct.BinaryMsg.ToByteArray();
+                message = new LCIMBinaryMessage(bytes);
+            } else {
+                // 文本消息
+                string messageData = direct.Msg;
+                Dictionary<string, object> msg = JsonConvert.DeserializeObject<Dictionary<string, object>>(messageData);
+                int msgType = (int)(long)msg["_lctype"];
+                switch (msgType) {
+                    case -1:
+                        message = new LCIMTextMessage();
+                        break;
+                    case -2:
+                        message = new LCIMImageMessage();
+                        break;
+                    case -3:
+                        message = new LCIMAudioMessage();
+                        break;
+                    case -4:
+                        message = new LCIMVideoMessage();
+                        break;
+                    case -5:
+                        message = new LCIMLocationMessage();
+                        break;
+                    case -6:
+                        message = new LCIMFileMessage();
+                        break;
+                    default:
+                        break;
+                }
+                message.Decode(direct);
+            }
+            // TODO 获取对话
+
+            OnMessageReceived?.Invoke(null, message);
+        }
+
         private LCIMConversation GetOrCreateConversation(string convId) {
             if (!conversationDict.TryGetValue(convId, out LCIMConversation conversation)) {
                 conversation = new LCIMConversation(this);

Realtime/Message/LCIMAudioMessage.cs

@@ -1,17 +1,32 @@
-using LeanCloud.Storage;
+using System.Collections.Generic;
+using LeanCloud.Storage;
 
 namespace LeanCloud.Realtime {
     public class LCIMAudioMessage : LCIMFileMessage {
         public double Duration {
             get {
-                if (double.TryParse("duration", out double duration)) {
+                if (double.TryParse(File.MetaData["duration"] as string, out double duration)) {
                     return duration;
                 }
                 return 0;
             }
         }
 
+        internal LCIMAudioMessage() {
+        }
+
         public LCIMAudioMessage(LCFile file) : base(file) {
-        }
+            
+        }
+
+        internal override Dictionary<string, object> Encode() {
+            Dictionary<string, object> data = base.Encode();
+            Dictionary<string, object> fileData = data["_lcfile"] as Dictionary<string, object>;
+            Dictionary<string, object> metaData = fileData["metaData"] as Dictionary<string, object>;
+            metaData["duration"] = File.MetaData["duration"];
+            return data;
+        }
+
+        internal override int MessageType => AudioMessageType;
     }
 }

Realtime/Message/LCIMBinaryMessage.cs

@@ -1,25 +1,14 @@
 using System;
+using System.Collections.Generic;
 
 namespace LeanCloud.Realtime {
     public class LCIMBinaryMessage : LCIMMessage {
         public byte[] Data {
-            get; set;
+            get; internal set;
         }
 
         public LCIMBinaryMessage(byte[] data) {
             Data = data;
         }
-
-        internal override string Serialize() {
-            throw new NotImplementedException();
-        }
-
-        internal override string GetText() {
-            return null;
-        }
-
-        internal override byte[] GetBytes() {
-            return Data;
-        }
     }
 }

Realtime/Message/LCIMFileMessage.cs

@@ -1,6 +1,5 @@
 using System;
 using System.Collections.Generic;
-using Newtonsoft.Json;
 using LeanCloud.Storage;
 
 namespace LeanCloud.Realtime {
@@ -30,24 +29,48 @@ namespace LeanCloud.Realtime {
             }
         }
 
-        public LCIMFileMessage(LCFile file) : base(null) {
+        internal LCIMFileMessage() : base() {
+
+        }
+
+        public LCIMFileMessage(LCFile file) : base() {
             File = file;
         }
 
-        internal override string Serialize() {
+        internal override Dictionary<string, object> Encode() {
             if (File == null) {
                 throw new Exception("File MUST NOT be null before sent.");
             }
-            File.MetaData["name"] = File.Name;
+            Dictionary<string, object> fileData = new Dictionary<string, object> {
-            File.MetaData["format"] = File.MimeType;
-            Dictionary<string, object> data = new Dictionary<string, object> {
                 { "objId", File.ObjectId },
                 { "url", File.Url },
-                { "metaData", File.MetaData }
+                { "metaData", new Dictionary<string, object> {
+                    { "name", File.Name },
+                    { "format", File.MimeType },
+                    { "size", File.MetaData["size"] }
+                } }
             };
-            return JsonConvert.SerializeObject(new Dictionary<string, object> {
+            Dictionary<string, object> data = base.Encode();
-                { "_lcfile", data }
+            data["_lcfile"] = fileData;
-            });
+            return data;
+        }
+
+        protected override void DecodeMessageData(Dictionary<string, object> msgData) {
+            base.DecodeMessageData(msgData);
+            Dictionary<string, object> fileData = msgData["_lcfile"] as Dictionary<string, object>;
+            string objectId = fileData["objId"] as string;
+            File = LCObject.CreateWithoutData(LCFile.CLASS_NAME, objectId) as LCFile;
+            if (fileData.TryGetValue("name", out object name)) {
+                File.Name = name as string;
+            }
+            if (fileData.TryGetValue("url", out object url)) {
+                File.Url = url as string;
+            }
+            if (fileData.TryGetValue("metaData", out object metaData)) {
+                File.MetaData = metaData as Dictionary<string, object>;
             }
         }
+
+        internal override int MessageType => FileMessageType;
+    }
 }

Realtime/Message/LCIMImageMessage.cs

@@ -1,4 +1,4 @@
-using System;
+using System.Collections.Generic;
 using LeanCloud.Storage;
 
 namespace LeanCloud.Realtime {
@@ -21,7 +21,22 @@ namespace LeanCloud.Realtime {
             }
         }
 
+        internal LCIMImageMessage() : base() {
+        }
+
         public LCIMImageMessage(LCFile file) : base(file) {
-        }
+
+        }
+
+        internal override Dictionary<string, object> Encode() {
+            Dictionary<string, object> data = base.Encode();
+            Dictionary<string, object> fileData = data["_lcfile"] as Dictionary<string, object>;
+            Dictionary<string, object> metaData = fileData["metaData"] as Dictionary<string, object>;
+            metaData["width"] = File.MetaData["width"];
+            metaData["height"] = File.MetaData["height"];
+            return data;
+        }
+
+        internal override int MessageType => ImageMessageType;
     }
 }

Realtime/Message/LCIMLocationMessage.cs

@@ -8,18 +8,29 @@ namespace LeanCloud.Realtime {
             get; set;
         }
 
+        internal LCIMLocationMessage() {
+        }
+
         public LCIMLocationMessage(LCGeoPoint locaction) : base(null) {
             Location = locaction;
         }
 
-        internal override string Serialize() {
+        internal override Dictionary<string, object> Encode() {
-            Dictionary<string, object> data = new Dictionary<string, object> {
+            Dictionary<string, object> data = base.Encode();
+            Dictionary<string, object> locationData = new Dictionary<string, object> {
                 { "longitude", Location.Longitude },
                 { "latitude", Location.Latitude }
             };
-            return JsonConvert.SerializeObject(new Dictionary<string, object> {
+            data["_lcloc"] = locationData;
-                { "_lcloc", data }
+            return data;
-            });
+        }
-        }
+
+        protected override void DecodeMessageData(Dictionary<string, object> msgData) {
+            base.DecodeMessageData(msgData);
+            Dictionary<string, object> locationData = msgData["_lcloc"] as Dictionary<string, object>;
+            Location = new LCGeoPoint((double)locationData["latitude"], (double)locationData["longitude"]);
+        }
+
+        internal override int MessageType => LocationMessageType;
     }
 }

Realtime/Message/LCIMMessage.cs

@@ -1,8 +1,16 @@
 using System;
 using System.Collections.Generic;
+using LeanCloud.Realtime.Protocol;
 
 namespace LeanCloud.Realtime {
     public abstract class LCIMMessage {
+        internal const int TextMessageType = -1;
+        internal const int ImageMessageType = -2;
+        internal const int AudioMessageType = -3;
+        internal const int VideoMessageType = -4;
+        internal const int LocationMessageType = -5;
+        internal const int FileMessageType = -6;
+            
         public string ConversationId {
             get; set;
         }
@@ -71,9 +79,11 @@ namespace LeanCloud.Realtime {
 
         }
 
-        internal abstract string Serialize();
+        internal virtual void Decode(DirectCommand direct) {
-
+            ConversationId = direct.Cid;
-        internal abstract string GetText();
+            Id = direct.Id;
-        internal abstract byte[] GetBytes();
+            FromClientId = direct.FromPeerId;
+            DeliveredTimestamp = direct.Timestamp;
+        }
     }
 }

Realtime/Message/LCIMTextMessage.cs

@@ -1,24 +1,33 @@
-using System;
+using System.Collections.Generic;
-using Newtonsoft.Json;
 
 namespace LeanCloud.Realtime {
     public class LCIMTextMessage : LCIMTypedMessage {
-        const int TextMessageType = -1;
-
         public string Text {
             get; set;
         }
 
-        public LCIMTextMessage(string text) : base(TextMessageType) {
+        internal LCIMTextMessage() {
+        }
+
+        public LCIMTextMessage(string text) : base() {
             Text = text;
         }
 
-        internal override string Serialize() {
+        internal override Dictionary<string, object> Encode() {
-            return Text;
+            Dictionary<string, object> data = base.Encode();
+            if (!string.IsNullOrEmpty(Text)) {
+                data["_lctext"] = Text;
+            }
+            return data;
         }
 
-        internal override string GetText() {
+        protected override void DecodeMessageData(Dictionary<string, object> msgData) {
-            return Text;
+            base.DecodeMessageData(msgData);
+            if (msgData.TryGetValue("_lctext", out object value)) {
+                Text = value as string;
             }
         }
+
+        internal override int MessageType => TextMessageType;
+    }
 }

Realtime/Message/LCIMTypedMessage.cs

@@ -1,23 +1,32 @@
-using System;
+using System.Collections.Generic;
+using Newtonsoft.Json;
+using LeanCloud.Realtime.Protocol;
+using LeanCloud.Storage.Internal;
 
 namespace LeanCloud.Realtime {
-    public class LCIMTypedMessage : LCIMMessage {
+    public abstract class LCIMTypedMessage : LCIMMessage {
-        protected int type;
+        protected LCIMTypedMessage() {
 
-        protected LCIMTypedMessage(int type) {
-            this.type = type;
         }
 
-        internal override string Serialize() {
+        internal virtual int MessageType {
-            throw new NotImplementedException();
+            get; private set;
         }
 
-        internal override string GetText() {
+        internal virtual Dictionary<string, object> Encode() {
-            return null;
+            return new Dictionary<string, object> {
+                { "_lctype", MessageType }
+            };
         }
 
-        internal override byte[] GetBytes() {
+        internal override void Decode(DirectCommand direct) {
-            return null;
+            base.Decode(direct);
+            Dictionary<string, object> msgData = JsonConvert.DeserializeObject<Dictionary<string, object>>(direct.Msg, new LCJsonConverter());
+            DecodeMessageData(msgData);
+        }
+
+        protected virtual void DecodeMessageData(Dictionary<string, object> msgData) {
+            MessageType = (int)msgData["_lctype"];
         }
     }
 }

Realtime/Message/LCIMVideoMessage.cs

@@ -1,4 +1,5 @@
-using LeanCloud.Storage;
+using System.Collections.Generic;
+using LeanCloud.Storage;
 
 namespace LeanCloud.Realtime {
     public class LCIMVideoMessage : LCIMFileMessage {
@@ -11,8 +12,23 @@ namespace LeanCloud.Realtime {
             }
         }
 
+        internal LCIMVideoMessage() {
+        }
+
         public LCIMVideoMessage(LCFile file) : base(file) {
 
         }
+
+        internal override Dictionary<string, object> Encode() {
+            Dictionary<string, object> data = base.Encode();
+            Dictionary<string, object> fileData = data["_lcfile"] as Dictionary<string, object>;
+            Dictionary<string, object> metaData = fileData["metaData"] as Dictionary<string, object>;
+            metaData["width"] = File.MetaData["width"];
+            metaData["height"] = File.MetaData["height"];
+            metaData["duration"] = File.MetaData["duration"];
+            return data;
+        }
+
+        internal override int MessageType => VideoMessageType;
     }
 }

Storage/Internal/Http/LCHttpClient.cs

@@ -61,7 +61,7 @@ namespace LeanCloud.Storage.Internal.Http {
             LCHttpUtils.PrintResponse(response, resultString);
 
             if (response.IsSuccessStatusCode) {
-                T ret = JsonConvert.DeserializeObject<T>(resultString, new LeanCloudJsonConverter());
+                T ret = JsonConvert.DeserializeObject<T>(resultString, new LCJsonConverter());
                 return ret;
             }
             throw HandleErrorResponse(response.StatusCode, resultString);
@@ -94,7 +94,7 @@ namespace LeanCloud.Storage.Internal.Http {
             LCHttpUtils.PrintResponse(response, resultString);
 
             if (response.IsSuccessStatusCode) {
-                T ret = JsonConvert.DeserializeObject<T>(resultString, new LeanCloudJsonConverter());
+                T ret = JsonConvert.DeserializeObject<T>(resultString, new LCJsonConverter());
                 return ret;
             }
             throw HandleErrorResponse(response.StatusCode, resultString);
@@ -127,7 +127,7 @@ namespace LeanCloud.Storage.Internal.Http {
             LCHttpUtils.PrintResponse(response, resultString);
 
             if (response.IsSuccessStatusCode) {
-                T ret = JsonConvert.DeserializeObject<T>(resultString, new LeanCloudJsonConverter());
+                T ret = JsonConvert.DeserializeObject<T>(resultString, new LCJsonConverter());
                 return ret;
             }
             throw HandleErrorResponse(response.StatusCode, resultString);
@@ -150,7 +150,7 @@ namespace LeanCloud.Storage.Internal.Http {
             LCHttpUtils.PrintResponse(response, resultString);
 
             if (response.IsSuccessStatusCode) {
-                Dictionary<string, object> ret = JsonConvert.DeserializeObject<Dictionary<string, object>>(resultString, new LeanCloudJsonConverter());
+                Dictionary<string, object> ret = JsonConvert.DeserializeObject<Dictionary<string, object>>(resultString, new LCJsonConverter());
                 return;
             }
             throw HandleErrorResponse(response.StatusCode, resultString);
@@ -161,7 +161,7 @@ namespace LeanCloud.Storage.Internal.Http {
             string message = responseContent;
             try {
                 // 尝试获取 LeanCloud 返回错误信息
-                Dictionary<string, object> error = JsonConvert.DeserializeObject<Dictionary<string, object>>(responseContent, new LeanCloudJsonConverter());
+                Dictionary<string, object> error = JsonConvert.DeserializeObject<Dictionary<string, object>>(responseContent, new LCJsonConverter());
                 code = (int)error["code"];
                 message = error["error"].ToString();
             } catch (Exception e) {

Storage/Internal/Http/LCJsonConverter.cs

@@ -3,7 +3,7 @@ using System.Collections.Generic;
 using Newtonsoft.Json;
 
 namespace LeanCloud.Storage.Internal {
-    public class LeanCloudJsonConverter : JsonConverter {
+    public class LCJsonConverter : JsonConverter {
         public override bool CanConvert(Type objectType) {
             return objectType == typeof(object);
         }

Storage/LCObject.cs

@@ -86,7 +86,7 @@ namespace LeanCloud.Storage {
             if (string.IsNullOrEmpty(objectId)) {
                 throw new ArgumentNullException(nameof(objectId));
             }
-            LCObject obj = new LCObject(className);
+            LCObject obj = Create(className);
             obj.data.ObjectId = objectId;
             obj.isNew = false;
             return obj;

Test/RealtimeConsole/Program.cs

@@ -36,26 +36,28 @@ namespace RealtimeConsole {
             };
             LCApplication.Initialize("ikGGdRE2YcVOemAaRbgp1xGJ-gzGzoHsz", "NUKmuRbdAhg1vrb2wexYo1jo", "https://ikggdre2.lc-cn-n1-shared.com");
 
-            LCIMClient client = new LCIMClient("hello123");
+            LCIMClient hello = new LCIMClient("hello");
 
-            try {
+            await hello.Open();
-                await client.Open();
-                Console.WriteLine($"End {Thread.CurrentThread.ManagedThreadId}");
-            } catch (Exception e) {
-                Console.WriteLine(e.Message);
-            }
 
-            client.OnInvited = (conv, initBy) => {
+            hello.OnInvited = (conv, initBy) => {
                 Console.WriteLine($"on invited: {initBy}");
             };
 
-            client.OnMembersJoined = (conv, memberList, initBy) => {
+            hello.OnMembersJoined = (conv, memberList, initBy) => {
                 Console.WriteLine($"on members joined: {initBy}");
             };
 
             List<string> memberIdList = new List<string> { "world", "code" };
             string name = Guid.NewGuid().ToString();
-            LCIMConversation conversation = await client.CreateConversation(memberIdList, name: name, unique: true);
+            LCIMConversation conversation = await hello.CreateConversation(memberIdList, name: name, unique: true);
+
+            LCIMClient world = new LCIMClient("world");
+            await world.Open();
+
+            world.OnMessageReceived = (conv, message) => {
+                Console.WriteLine(message);
+            };
 
             //LCIMTextMessage textMessage = new LCIMTextMessage("hello, world");
             //await conversation.Send(textMessage);
@@ -77,10 +79,13 @@ namespace RealtimeConsole {
             //LCIMTextMessage textMessage = new LCIMTextMessage("hello, world");
             //await conversation.Send(textMessage);
 
-            LCFile file = new LCFile("avatar", "../../../Storage.Test/assets/hello.png");
+            //LCFile file = new LCFile("avatar", "../../../Storage.Test/assets/hello.png");
-            await file.Save();
+            //file.MetaData["width"] = 225;
-            LCIMImageMessage imageMessage = new LCIMImageMessage(file);
+            //file.MetaData["height"] = 225;
-            await conversation.Send(imageMessage);
+            //file.MetaData["size"] = 1186;
+            //await file.Save();
+            //LCIMImageMessage imageMessage = new LCIMImageMessage(file);
+            //await conversation.Send(imageMessage);
 
             LCGeoPoint location = new LCGeoPoint(11, 12);
             LCIMLocationMessage locationMessage = new LCIMLocationMessage(location);