Fix & update

Fix file transfer
Added serialization for short, ushort, uint32, uint64

ZeroLevel/Services/Network/FileTransfer/FileReader.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
+using ZeroLevel.Services.HashFunctions;
 
 namespace ZeroLevel.Network.FileTransfer
 {
@@ -37,6 +38,10 @@ namespace ZeroLevel.Network.FileTransfer
                         Payload = new byte[bytesRead]
                     };
                     Array.Copy(buffer, 0, fragment.Payload, 0, bytesRead);
+                    var hash = Murmur3.ComputeHash(fragment.Payload);
+                    fragment.ChecksumL = BitConverter.ToUInt64(hash, 0);
+                    fragment.ChecksumH = BitConverter.ToUInt64(hash, 8);
+
                     offset = offset + 1;
                     yield return fragment;
                 }

ZeroLevel/Services/Network/FileTransfer/FileReceiver.cs

@@ -1,4 +1,5 @@
 using System;
+using ZeroLevel.Models;
 
 namespace ZeroLevel.Network.FileTransfer
 {
@@ -16,15 +17,18 @@ namespace ZeroLevel.Network.FileTransfer
 
             if (false == router.ContainsRequestorInbox("__file_transfer_start_transfer__"))
             {
-                router.RegisterInbox<FileStartFrame>("__file_transfer_start_transfer__", (c, f) => _receiver.Incoming(f, nameMapper(c)));
+                router.RegisterInbox<FileStartFrame, InvokeResult>("__file_transfer_start_transfer__",
+                    (c, f) => _receiver.Incoming(f, nameMapper(c)));
             }
             if (false == router.ContainsRequestorInbox("__file_transfer_frame__"))
             {
-                router.RegisterInbox<FileFrame>("__file_transfer_frame__", (_, f) => _receiver.Incoming(f));
+                router.RegisterInbox<FileFrame, InvokeResult>("__file_transfer_frame__", 
+                    (_, f) => _receiver.Incoming(f));
             }
             if (false == router.ContainsRequestorInbox("__file_transfer_complete_transfer__"))
             {
-                router.RegisterInbox<FileEndFrame>("__file_transfer_complete_transfer__", (_, f) => _receiver.Incoming(f));
+                router.RegisterInbox<FileEndFrame, InvokeResult>("__file_transfer_complete_transfer__", 
+                    (_, f) => _receiver.Incoming(f));
             }
             if (false == router.ContainsRequestorInbox("__file_transfer_ping__"))
             {

ZeroLevel/Services/Network/FileTransfer/FileSender.cs

@@ -2,6 +2,7 @@
 using System.Collections.Concurrent;
 using System.IO;
 using System.Threading;
+using ZeroLevel.Models;
 using ZeroLevel.Services.Pools;
 
 namespace ZeroLevel.Network.FileTransfer
@@ -11,6 +12,11 @@ namespace ZeroLevel.Network.FileTransfer
         private BlockingCollection<FileTransferTask> _tasks = new BlockingCollection<FileTransferTask>();
         private ObjectPool<FileTransferTask> _taskPool = new ObjectPool<FileTransferTask>(() => new FileTransferTask(), 100);
         private readonly Thread _uploadFileThread;
+        private bool _resendWhenServerError = false;
+        private bool _resendWhenClientError = false;
+
+        public void ResendWhenServerError(bool resend = true) => _resendWhenServerError = resend;
+        public void ResendWhenClientError(bool resend = true) => _resendWhenClientError = resend;
 
         public FileSender()
         {
@@ -78,23 +84,44 @@ namespace ZeroLevel.Network.FileTransfer
             return connected;
         }
 
+        private static bool Send<T>(ExClient client, string inbox, T frame,
+            bool resendWhenConnectionError, bool resendWhenServerError)
+        {
+            bool sended = false;
+            var handle = new Action<InvokeResult>(ir =>
+            {
+                if (ir.Success == false && resendWhenServerError)
+                {
+                    Send<T>(client, inbox, frame, resendWhenConnectionError, false);
+                }
+            });
+            sended = client.Request<T, InvokeResult>(inbox, frame, handle).Success;
+            if (sended == false && resendWhenConnectionError)
+            {
+                sended = client.Request<T, InvokeResult>(inbox, frame, handle).Success;
+            }
+            return sended;
+        }
+
         internal void ExecuteSendFile(FileReader reader, FileTransferTask task)
         {
             Log.Info($"Start upload file {reader.Path}");
             var startinfo = reader.GetStartInfo();
-            if (false == task.Client.Send<FileStartFrame>("__file_transfer_start_transfer__", startinfo).Success)
+
+            if (!Send(task.Client, "__file_transfer_start_transfer__", startinfo, _resendWhenClientError, _resendWhenServerError))
             {
+                Log.Debug($"Upload file {reader.Path} interrupted");
                 return;
             }
             foreach (var chunk in reader.Read())
             {
-                if (task.Client.Send<FileFrame>("__file_transfer_frame__", chunk).Success == false)
+                if (!Send(task.Client, "__file_transfer_frame__", chunk, _resendWhenClientError, _resendWhenServerError))
                 {
+                    Log.Debug($"Upload file {reader.Path} interrupted");
                     return;
                 }
             }
-            task.Client.Send<FileEndFrame>("__file_transfer_complete_transfer__", reader.GetCompleteInfo());
-            Log.Debug($"Stop upload file {reader.Path}");
+            Send(task.Client, "__file_transfer_complete_transfer__", reader.GetCompleteInfo(), _resendWhenClientError, _resendWhenServerError);
         }
     }
 }

ZeroLevel/Services/Network/FileTransfer/FileWriter.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.IO;
 using ZeroLevel.Models;
+using ZeroLevel.Services.HashFunctions;
 
 namespace ZeroLevel.Network.FileTransfer
 {
@@ -108,6 +109,16 @@ namespace ZeroLevel.Network.FileTransfer
                 _FileWriter stream;
                 if (_incoming.TryGetValue(chunk.UploadFileTaskId, out stream))
                 {
+
+                    var hash = Murmur3.ComputeHash(chunk.Payload);
+                    var checksumL = BitConverter.ToUInt64(hash, 0);
+                    var checksumH = BitConverter.ToUInt64(hash, 8);
+
+                    if (chunk.ChecksumH != checksumH
+                        || chunk.ChecksumL != checksumL)
+                        return InvokeResult.Fault("Checksum incorrect");
+
+
                     stream.Write(chunk.Offset, chunk.Payload);
                     return InvokeResult.Succeeding();
                 }

ZeroLevel/Services/Network/FileTransfer/Model/FileFrame.cs

@@ -10,12 +10,17 @@ namespace ZeroLevel.Network.FileTransfer
         public long UploadFileTaskId { get; set; }
         public long Offset { get; set; }
         public byte[] Payload { get; set; }
+        public ulong ChecksumL { get; set; }
+        public ulong ChecksumH { get; set; }
 
         public void Serialize(IBinaryWriter writer)
         {
             writer.WriteLong(this.UploadFileTaskId);
             writer.WriteLong(this.Offset);
             writer.WriteBytes(this.Payload);
+
+            writer.WriteULong(this.ChecksumL);
+            writer.WriteULong(this.ChecksumH);
         }
 
         public void Deserialize(IBinaryReader reader)
@@ -23,6 +28,9 @@ namespace ZeroLevel.Network.FileTransfer
             this.UploadFileTaskId = reader.ReadLong();
             this.Offset = reader.ReadLong();
             this.Payload = reader.ReadBytes();
+
+            this.ChecksumL = reader.ReadULong();
+            this.ChecksumH = reader.ReadULong();
         }
     }
 }

ZeroLevel/Services/Network/SocketServer.cs

@@ -82,7 +82,7 @@ namespace ZeroLevel.Network
                     var connection = new SocketClient(client_socket, _router);
                     connection.OnDisconnect += Connection_OnDisconnect;
                     _connections[connection.Endpoint] = new ExClient(connection);
-
+                    connection.UseKeepAlive(TimeSpan.FromMilliseconds(BaseSocket.MINIMUM_HEARTBEAT_UPDATE_PERIOD_MS));
                     ConnectEventRise(_connections[connection.Endpoint]);
                 }
                 catch (Exception ex)

ZeroLevel/Services/Network/Utils/ExClientServerCachee.cs

@@ -36,8 +36,7 @@ namespace ZeroLevel.Network
                 if (instance.Status == SocketClientStatus.Initialized
                     || instance.Status == SocketClientStatus.Working)
                 {
-                    _clientInstances[key] = instance;
-                    instance.Socket.OnDisconnect += Socket_OnDisconnect;
+                    _clientInstances[key] = instance;                    
                     instance.Socket.UseKeepAlive(TimeSpan.FromMilliseconds(BaseSocket.MINIMUM_HEARTBEAT_UPDATE_PERIOD_MS));
                     return instance;
                 }
@@ -54,18 +53,6 @@ namespace ZeroLevel.Network
             return null;
         }
 
-        private void Socket_OnDisconnect(ISocketClient socket)
-        {
-            socket.OnDisconnect -= Socket_OnDisconnect;
-
-            ExClient removed;
-            string key = $"{socket.Endpoint.Address}:{socket.Endpoint.Port}";
-            if (_clientInstances.TryRemove(key, out removed))
-            {
-                removed.Dispose();
-            }
-        }
-
         public SocketServer GetServer(IPEndPoint endpoint, IRouter router)
         {
             string key = $"{endpoint.Address}:{endpoint.Port}";

ZeroLevel/Services/Serialization/IBinaryReader.cs

@@ -16,10 +16,18 @@ namespace ZeroLevel.Services.Serialization
 
         float ReadFloat();
 
+        short ReadShort();
+
+        ushort ReadUShort();
+
         Int32 ReadInt32();
 
+        UInt32 ReadUInt32();
+
         Int64 ReadLong();
 
+        UInt64 ReadULong();
+
         string ReadString();
 
         Guid ReadGuid();

ZeroLevel/Services/Serialization/IBinaryWriter.cs

@@ -14,14 +14,22 @@ namespace ZeroLevel.Services.Serialization
 
         void WriteBytes(byte[] val);
 
+        void WriteShort(short number);
+
+        void WriteUShort(ushort number);
+
         void WriteDouble(double val);
 
         void WriteFloat(float val);
 
         void WriteInt32(Int32 number);
 
+        void WriteUInt32(UInt32 number);
+
         void WriteLong(Int64 number);
 
+        void WriteULong(UInt64 number);
+
         void WriteString(string line);
 
         void WriteGuid(Guid guid);

ZeroLevel/Services/Serialization/MemoryStreamReader.cs

@@ -66,6 +66,18 @@ namespace ZeroLevel.Services.Serialization
             return ReadBuffer(length);
         }
 
+        public short ReadShort()
+        {
+            var buffer = ReadBuffer(2);
+            return BitConverter.ToInt16(buffer, 0);
+        }
+
+        public ushort ReadUShort()
+        {
+            var buffer = ReadBuffer(2);
+            return BitConverter.ToUInt16(buffer, 0);
+        }
+
         /// <summary>
         /// Read 32-bit integer (4 bytes)
         /// </summary>
@@ -75,6 +87,12 @@ namespace ZeroLevel.Services.Serialization
             return BitConverter.ToInt32(buffer, 0);
         }
 
+        public UInt32 ReadUInt32()
+        {
+            var buffer = ReadBuffer(4);
+            return BitConverter.ToUInt32(buffer, 0);
+        }
+
         public decimal ReadDecimal()
         {
             var p1 = ReadInt32();
@@ -93,6 +111,12 @@ namespace ZeroLevel.Services.Serialization
             return BitConverter.ToInt64(buffer, 0);
         }
 
+        public UInt64 ReadULong()
+        {
+            var buffer = ReadBuffer(8);
+            return BitConverter.ToUInt64(buffer, 0);
+        }
+
         public TimeSpan ReadTimeSpan()
         {
             return new TimeSpan(ReadLong());

ZeroLevel/Services/Serialization/MemoryStreamWriter.cs

@@ -62,6 +62,19 @@ namespace ZeroLevel.Services.Serialization
             }
         }
 
+        /// <summary>
+        /// Record a 32-bit integer (4 bytes)
+        /// </summary>
+        public void WriteShort(short number)
+        {
+            _stream.Write(BitConverter.GetBytes(number), 0, 2);
+        }
+
+        public void WriteUShort(ushort number)
+        {
+            _stream.Write(BitConverter.GetBytes(number), 0, 2);
+        }
+
         /// <summary>
         /// Record a 32-bit integer (4 bytes)
         /// </summary>
@@ -70,6 +83,11 @@ namespace ZeroLevel.Services.Serialization
             _stream.Write(BitConverter.GetBytes(number), 0, 4);
         }
 
+        public void WriteUInt32(UInt32 number)
+        {
+            _stream.Write(BitConverter.GetBytes(number), 0, 4);
+        }
+
         /// <summary>
         /// Record an integer 64-bit number (8 bytes)
         /// </summary>
@@ -78,6 +96,11 @@ namespace ZeroLevel.Services.Serialization
             _stream.Write(BitConverter.GetBytes(number), 0, 8);
         }
 
+        public void WriteULong(UInt64 number)
+        {
+            _stream.Write(BitConverter.GetBytes(number), 0, 8);
+        }
+
         public void WriteTimeSpan(TimeSpan period)
         {
             WriteLong(period.Ticks);