private void Bind(Socket acceptSocket)
{
var exSocket = new TNSocket(acceptSocket);
exSocket.LastAccessTime = DateTime.Now;
var buffer = new byte[this.clientSettings.BufferSize * 2];
this.sendEventArg = new SocketAsyncEventArgs();
this.sendEventArg.SetBuffer(buffer, 0, this.clientSettings.BufferSize);
var sendDataToken = new DataToken()
{
Socket = exSocket
};
sendDataToken.bufferOffset = this.sendEventArg.Offset;
this.sendEventArg.UserToken = sendDataToken;
this.sendEventArg.AcceptSocket = acceptSocket;
this.sendEventArg.Completed += new EventHandler <SocketAsyncEventArgs>(IO_Completed);
this.receiveEventArg = new SocketAsyncEventArgs();
this.receiveEventArg.SetBuffer(buffer, this.clientSettings.BufferSize, this.clientSettings.BufferSize);
var receiveDataToken = new DataToken {
Socket = exSocket, SyncSegments = new Queue <ArraySegment <byte> >()
};
receiveDataToken.bufferOffset = this.receiveEventArg.Offset;
this.receiveEventArg.UserToken = receiveDataToken;
this.receiveEventArg.AcceptSocket = acceptSocket;
this.receiveEventArg.Completed += new EventHandler <SocketAsyncEventArgs>(IO_Completed);
if (IsSyncReceived)
{
DataReceived += OnReceived;
}
requestHandler.Bind(this);
}
private void ProcessSend(SocketAsyncEventArgs ioEventArgs)
{
DataToken dataToken = (DataToken)ioEventArgs.UserToken;
if (ioEventArgs.SocketError == SocketError.Success)
{
dataToken.messageBytesDone += ioEventArgs.BytesTransferred;
if (dataToken.messageBytesDone != dataToken.messageLength)
{
PostSend(ioEventArgs);
}
else
{
dataToken.ResultCallback(ResultCode.Success);
dataToken.Reset(true);
try
{
TryDequeueAndPostSend(dataToken.Socket, ioEventArgs);
}
catch
{
ResetSendFlag();
throw;
}
}
}
else
{
dataToken.ResultCallback(ResultCode.Close);
ResetSendFlag();
Closing(ioEventArgs);
}
}
private void TryDequeueAndPostSend(TNSocket socket, SocketAsyncEventArgs ioEventArgs)
{
SocketAsyncResult result;
if (socket.TryDequeueOrReset(out result))
{
DataToken dataToken = (DataToken)ioEventArgs.UserToken;
dataToken.Socket = socket;
dataToken.AsyncResult = result;
dataToken.byteArrayForMessage = result.Data;
dataToken.messageLength = result.Data.Length;
try
{
PostSend(ioEventArgs);
}
catch (Exception ex)
{
dataToken.ResultCallback(ResultCode.Error, ex);
ResetSendFlag();
}
}
else
{
//ResetSendFlag();
}
}
private void IO_Completed(object sender, SocketAsyncEventArgs ioEventArgs)
{
try
{
DataToken ioDataToken = (DataToken)ioEventArgs.UserToken;
switch (ioEventArgs.LastOperation)
{
case SocketAsyncOperation.Receive:
ProcessReceive(ioEventArgs);
break;
case SocketAsyncOperation.Send:
ProcessSend(ioEventArgs);
break;
default:
throw new ArgumentException("The last operation completed on the socket was not a receive or send");
}
}
catch (ObjectDisposedException)
{
ReleaseIOEventArgs(ioEventArgs);
}
catch (Exception ex)
{
TraceLog.WriteError("IO_Completed of client error:{0}", ex);
}
}
private int HandlePrefix(byte[] buffer, int offset, DataToken dataToken, int remainingBytesToProcess)
{
if (remainingBytesToProcess >= 4 - dataToken.prefixBytesDone)
{
for (int i = 0; i < 4 - dataToken.prefixBytesDone; i++)
{
dataToken.byteArrayForPrefix[dataToken.prefixBytesDone + i] = buffer[offset + i];
}
remainingBytesToProcess = remainingBytesToProcess - 4 + dataToken.prefixBytesDone;
dataToken.bufferSkip += 4 - dataToken.prefixBytesDone;
dataToken.prefixBytesDone = 4;
dataToken.messageLength = BitConverter.ToInt32(dataToken.byteArrayForPrefix, 0);
}
else
{
for (int i = 0; i < remainingBytesToProcess; i++)
{
dataToken.byteArrayForPrefix[dataToken.prefixBytesDone + i] = buffer[offset + i];
}
dataToken.prefixBytesDone += remainingBytesToProcess;
remainingBytesToProcess = 0;
}
return(remainingBytesToProcess);
}
private void IO_Completed(object sender, SocketAsyncEventArgs ioEventArgs)
{
DataToken ioDataToken = (DataToken)ioEventArgs.UserToken;
try
{
ioDataToken.Socket.LastAccessTime = DateTime.Now;
switch (ioEventArgs.LastOperation)
{
case SocketAsyncOperation.Receive:
ProcessReceive(ioEventArgs);
break;
case SocketAsyncOperation.Send:
ProcessSend(ioEventArgs);
break;
default:
throw new ArgumentException("The last operation completed on the socket was not a receive or send");
}
}
catch (ObjectDisposedException)
{
//modify disposed error ignore log
//logger.Error(string.Format("IO_Completed error:{0}", error));
ReleaseIOEventArgs(ioEventArgs);
}
catch (Exception ex)
{
TraceLog.WriteError("IP {0} IO_Completed unkown error:{1}", (ioDataToken != null && ioDataToken.Socket != null ? ioDataToken.Socket.RemoteEndPoint.ToNotNullString() : ""), ex);
}
}
private void PostSend(SocketAsyncEventArgs ioEventArgs)
{
DataToken dataToken = (DataToken)ioEventArgs.UserToken;
if (dataToken.messageLength - dataToken.messageBytesDone <= this.clientSettings.BufferSize)
{
ioEventArgs.SetBuffer(dataToken.bufferOffset, dataToken.messageLength - dataToken.messageBytesDone);
Buffer.BlockCopy(dataToken.byteArrayForMessage, dataToken.messageBytesDone, ioEventArgs.Buffer, dataToken.bufferOffset, dataToken.messageLength - dataToken.messageBytesDone);
}
else
{
this.sendEventArg.SetBuffer(dataToken.bufferOffset, this.clientSettings.BufferSize);
Buffer.BlockCopy(dataToken.byteArrayForMessage, dataToken.messageBytesDone, ioEventArgs.Buffer, dataToken.bufferOffset, this.clientSettings.BufferSize);
}
bool willRaiseEvent = this.socketClient.SendAsync(this.sendEventArg);
if (!willRaiseEvent)
{
ProcessSend(ioEventArgs);
}
}
private void Init()
{
this.bufferManager.InitBuffer();
for (int i = 0; i < this.socketSettings.MaxAcceptOps; i++)
{
this.acceptEventArgsPool.Push(CreateAcceptEventArgs());
}
SocketAsyncEventArgs ioEventArgs;
for (int i = 0; i < this.socketSettings.NumOfSaeaForRecSend; i++)
{
ioEventArgs = new SocketAsyncEventArgs();
this.bufferManager.SetBuffer(ioEventArgs);
ioEventArgs.Completed += new EventHandler <SocketAsyncEventArgs>(IO_Completed);
DataToken dataToken = new DataToken();
dataToken.bufferOffset = ioEventArgs.Offset;
ioEventArgs.UserToken = dataToken;
this.ioEventArgsPool.Push(ioEventArgs);
}
_summaryTimer = new Timer(OnSummaryTrace, null, 600, 60000);
}
private void TryDequeueAndPostSend(TNSocket socket, SocketAsyncEventArgs ioEventArgs)
{
bool isOwner = ioEventArgs == null;
SocketAsyncResult result;
if (socket.TryDequeueOrReset(out result))
{
if (ioEventArgs == null)
{
ioEventArgs = ioEventArgsPool.Pop();
ioEventArgs.AcceptSocket = socket.WorkSocket;
}
DataToken dataToken = (DataToken)ioEventArgs.UserToken;
dataToken.Socket = socket;
dataToken.AsyncResult = result;
dataToken.byteArrayForMessage = result.Data;
dataToken.messageLength = result.Data.Length;
try
{
PostSend(ioEventArgs);
}
catch (Exception ex)
{
dataToken.ResultCallback(ResultCode.Error, ex);
if (isOwner)
{
ReleaseIOEventArgs(ioEventArgs);
}
socket.ResetSendFlag();
}
}
else
{
ReleaseIOEventArgs(ioEventArgs);
//socket.ResetSendFlag();
}
}
private int HandleMessage(byte[] buffer, int offset, DataToken dataToken, int remainingBytesToProcess)
{
if (dataToken.messageBytesDone == 0)
{
dataToken.byteArrayForMessage = new byte[dataToken.messageLength];
}
var nonCopiedBytes = 0;
if (remainingBytesToProcess + dataToken.messageBytesDone >= dataToken.messageLength)
{
var copyedBytes = dataToken.RemainByte;
nonCopiedBytes = remainingBytesToProcess - copyedBytes;
Buffer.BlockCopy(buffer, offset, dataToken.byteArrayForMessage, dataToken.messageBytesDone, copyedBytes);
dataToken.messageBytesDone = dataToken.messageLength;
dataToken.bufferSkip += copyedBytes;
}
else
{
Buffer.BlockCopy(buffer, offset, dataToken.byteArrayForMessage, dataToken.messageBytesDone, remainingBytesToProcess);
dataToken.messageBytesDone += remainingBytesToProcess;
}
return(nonCopiedBytes);
}
/// <summary>
///
/// </summary>
/// <param name="ioEventArgs"></param>
/// <param name="opCode"></param>
/// <param name="reason"></param>
/// <param name="dataToken"></param>
protected void Dispose(SocketAsyncEventArgs ioEventArgs, sbyte opCode, string reason, DataToken dataToken)
{
ReleaseIOEventArgs(ioEventArgs);
Dispose(dataToken.Socket, opCode, reason);
}
private void ProcessReceive(SocketAsyncEventArgs ioEventArgs)
{
DataToken dataToken = (DataToken)ioEventArgs.UserToken;
if (ioEventArgs.BytesTransferred == 0)
{
//对方主动关闭socket
//if (logger.IsDebugEnabled) logger.Debug("对方关闭Socket");
Closing(ioEventArgs, OpCode.Empty);
return;
}
if (ioEventArgs.SocketError != SocketError.Success)
{
//Socket错误
//if (logger.IsDebugEnabled) logger.Debug("Socket接收错误:{0}", ioEventArg.SocketError);
Closing(ioEventArgs);
return;
}
List <DataMessage> messages;
bool hasHandshaked;
bool needPostAnother = requestHandler.TryReceiveMessage(ioEventArgs, out messages, out hasHandshaked);
if (hasHandshaked)
{
DoOpened(new SocketEventArgs()
{
Socket = dataToken.Socket
});
}
// 触发收到消息事件
if (messages != null)
{
foreach (var message in messages)
{
try
{
if (message.OpCode == OpCode.Close)
{
var statusCode = requestHandler.MessageProcessor != null
? requestHandler.MessageProcessor.GetCloseStatus(message.Data)
: OpCode.Empty;
if (statusCode != OpCode.Empty)
{
OnClosedStatus(statusCode);
}
Closing(ioEventArgs, OpCode.Empty);
needPostAnother = false;
break;
}
OnDataReceived(new SocketEventArgs {
Source = message
});
}
catch (Exception ex)
{
TraceLog.WriteError("OnDataReceived of client error:{0}", ex);
}
}
}
if (needPostAnother)
{
PostReceive(ioEventArgs);
}
}
/// <summary>
///
/// </summary>
/// <param name="dataToken"></param>
/// <param name="buffer"></param>
/// <param name="messageList"></param>
/// <returns></returns>
public override bool TryReadMeaage(DataToken dataToken, byte[] buffer, out List <DataMessage> messageList)
{
messageList = new List <DataMessage>();
int remainingBytesToProcess = buffer.Length;
bool needPostAnother = true;
do
{
if (dataToken.prefixBytesDone < 4)
{
remainingBytesToProcess = HandlePrefix(buffer, dataToken.bufferSkip, dataToken, remainingBytesToProcess);
if (dataToken.prefixBytesDone == 4 && (dataToken.messageLength > 10 * 1024 * 1024 || dataToken.messageLength <= 0))
{
byte[] bufferBytes = dataToken.byteArrayForMessage == null?
BufferUtils.MergeBytes(dataToken.byteArrayForPrefix, BufferUtils.GetBytes(buffer, dataToken.bufferSkip, buffer.Length - dataToken.bufferSkip)) :
BufferUtils.MergeBytes(dataToken.byteArrayForPrefix, dataToken.byteArrayForMessage, buffer);
string data = Encoding.UTF8.GetString(bufferBytes);
//消息头已接收完毕，并且接收到的消息长度大于10M，socket传输的数据已紊乱，关闭掉
TraceLog.Write("The host[{0}] request parser head byte error, byte len={1}\r\ndata:{2}",
dataToken.Socket.RemoteEndPoint.ToNotNullString(),
dataToken.messageLength,
data);
needPostAnother = false;
break;
}
//if (logger.IsDebugEnabled) logger.Debug("处理消息头，消息长度[{0}]，剩余字节[{1}]", dataToken.messageLength, remainingBytesToProcess);
if (remainingBytesToProcess == 0)
{
break;
}
}
remainingBytesToProcess = HandleMessage(buffer, dataToken.bufferSkip, dataToken, remainingBytesToProcess);
if (dataToken.IsMessageReady)
{
//if (logger.IsDebugEnabled) logger.Debug("完整封包 长度[{0}],总传输[{1}],剩余[{2}]", dataToken.messageLength, ioEventArgs.BytesTransferred, remainingBytesToProcess);
messageList.Add(new DataMessage()
{
Data = dataToken.byteArrayForMessage, OpCode = OpCode.Binary
});
if (remainingBytesToProcess != 0)
{
//if (logger.IsDebugEnabled) logger.Debug("重置缓冲区,buffskip指针[{0}]。", dataToken.bufferSkip);
dataToken.Reset(false);
}
}
else
{
//if (logger.IsDebugEnabled) logger.Debug("不完整封包 长度[{0}],总传输[{1}],已接收[{2}]", dataToken.messageLength, ioEventArgs.BytesTransferred, dataToken.messageBytesDone);
}
} while (remainingBytesToProcess != 0);
if (needPostAnother)
{
//继续处理下个请求包
if (dataToken.prefixBytesDone == 4 && dataToken.IsMessageReady)
{
dataToken.Reset(true);
}
dataToken.bufferSkip = 0;
}
return(needPostAnother);
}
/// <summary>
///
/// </summary>
/// <param name="saea"></param>
/// <param name="dataToken"></param>
/// <param name="remainingBytesToProcess"></param>
/// <returns></returns>
public int HandleMessage(SocketAsyncEventArgs saea, DataToken dataToken, int remainingBytesToProcess)
{
return(HandleMessage(saea.Buffer, dataToken.DataOffset, dataToken, remainingBytesToProcess));
}
/// <summary>
/// 处理数据接收回调
/// </summary>
/// <param name="ioEventArgs"></param>
private void ProcessReceive(SocketAsyncEventArgs ioEventArgs)
{
DataToken dataToken = (DataToken)ioEventArgs.UserToken;
if (ioEventArgs.BytesTransferred == 0)
{
//对方主动关闭socket
//if (logger.IsDebugEnabled) logger.Debug("对方关闭Socket");
Closing(ioEventArgs, OpCode.Empty);
return;
}
if (ioEventArgs.SocketError != SocketError.Success)
{//Socket错误
TraceLog.Write("ProcessReceive IP {0} SocketError:{1}, bytes len:{2}",
(dataToken != null ? dataToken.Socket.RemoteEndPoint.ToNotNullString() : ""),
ioEventArgs.SocketError.ToString(),
ioEventArgs.BytesTransferred);
Closing(ioEventArgs);
return;
}
TNSocket exSocket = dataToken == null ? null : dataToken.Socket;
List <DataMessage> messages;
bool hasHandshaked;
bool needPostAnother = requestHandler.TryReceiveMessage(ioEventArgs, out messages, out hasHandshaked);
if (hasHandshaked)
{
OnHandshaked(new ConnectionEventArgs {
Socket = exSocket
});
}
//modify reason:数据包接收事件触发乱序
if (messages != null)
{
foreach (var message in messages)
{
try
{
switch (message.OpCode)
{
case OpCode.Close:
var statusCode = requestHandler.MessageProcessor != null
? requestHandler.MessageProcessor.GetCloseStatus(message.Data)
: OpCode.Empty;
if (statusCode != OpCode.Empty)
{
DoClosedStatus(exSocket, statusCode);
}
Closing(ioEventArgs, OpCode.Empty);
needPostAnother = false;
break;
case OpCode.Ping:
DoPing(new ConnectionEventArgs {
Socket = exSocket, Message = message
});
break;
case OpCode.Pong:
DoPong(new ConnectionEventArgs {
Socket = exSocket, Message = message
});
break;
default:
OnDataReceived(new ConnectionEventArgs {
Socket = exSocket, Message = message
});
break;
}
}
catch (Exception ex)
{
TraceLog.WriteError("OnDataReceived error:{0}", ex);
}
}
}
if (needPostAnother)
{
PostReceive(ioEventArgs);
//是否需要关闭连接
if (exSocket.IsClosed)
{
ResetSAEAObject(ioEventArgs);
}
}
}
/// <summary> /// /// </summary> /// <param name="dataToken"></param> /// <param name="buffer"></param> /// <param name="messageList"></param> /// <returns></returns> public abstract bool TryReadMeaage(DataToken dataToken, byte[] buffer, out List <DataMessage> messageList);