private void TheadWaitOne()
{
try
{
if (WorkerCallBack == null)
{
//Cria o evento assíncrono que será disparado quando ocorrer um input
//de dados
WorkerCallBack = new AsyncCallback(OnDataReceived);
}
// Encapsula o client socket solicitante e o clientNumber.
MDSSocketPacket _SocketPacket = new MDSSocketPacket();
_SocketPacket._Socket = _ClientSocket;
//Inicializa a recepção assíncrona dos Dados
AsyncResult = _ClientSocket.BeginReceive(_SocketPacket.dataBuffer,
0, _SocketPacket.dataBuffer.Length,
SocketFlags.None,
WorkerCallBack,
_SocketPacket);
}
catch (SocketException se)
{
throw (se);
}
}
public void MDSSocketClose(MDSSocketPacket _SocketPacket)
{
try
{
// Finaliza a instancia do Socket
_SocketPacket._Socket.Shutdown(SocketShutdown.Both);
_SocketPacket._Socket.Close();
_SocketPacket._Socket = null;
_SocketPacket = null;
}
catch {}
finally
{
bConectado = false;
}
}
private int ReceiveData(int BytesResult, int BufferSize, int xBufferSize, MDSSocketPacket socketData)
{
string Message = string.Empty;
int posx = 0;
byte[] Buffer =
new byte[BytesResult];
int ByteRest = socketData._Socket.Receive(Buffer,
BytesResult,
SocketFlags.None
);
switch (ByteRest)
{
case 1:
xBufferSize += (((int)Buffer[posx++]) & 0xFF);
break;
case 2:
xBufferSize += (((int)Buffer[posx++]) & 0xFF) << 8;
xBufferSize += (((int)Buffer[posx++]) & 0xFF);
break;
case 3:
xBufferSize += (((int)Buffer[posx++]) & 0xFF) << 16;
xBufferSize += (((int)Buffer[posx++]) & 0xFF) << 8;
xBufferSize += (((int)Buffer[posx++]) & 0xFF);
break;
case 4:
xBufferSize += (((int)Buffer[posx++]) & 0xFF) << 24;
xBufferSize += (((int)Buffer[posx++]) & 0xFF) << 16;
xBufferSize += (((int)Buffer[posx++]) & 0xFF) << 8;
xBufferSize += (((int)Buffer[posx++]) & 0xFF);
break;
}
return(xBufferSize);
}
private void OnDataReceived(IAsyncResult asyn)
{
string Instrumento = string.Empty;
int BufferAlocate = 0;
int BufferReceiveLenght = 4;
MDSSocketPacket socketData = (MDSSocketPacket)asyn.AsyncState;
try
{
lock (this)
{
int ResultBytesLength = socketData._Socket.EndReceive(asyn);
// Falha de conexão.
if (ResultBytesLength <= 0)
{
this.MDSSocketClose(socketData);
return;
}
int xBufferSize = 0;
int posx = 0;
if (BufferReceiveLenght > ResultBytesLength)
{
switch (ResultBytesLength)
{
case 1:
xBufferSize += (((int)socketData.dataBuffer[posx++]) & 0xFF) << 24;
break;
case 2:
xBufferSize += (((int)socketData.dataBuffer[posx++]) & 0xFF) << 24;
xBufferSize += (((int)socketData.dataBuffer[posx++]) & 0xFF) << 16;
break;
case 3:
xBufferSize += (((int)socketData.dataBuffer[posx++]) & 0xFF) << 24;
xBufferSize += (((int)socketData.dataBuffer[posx++]) & 0xFF) << 16;
xBufferSize += (((int)socketData.dataBuffer[posx++]) & 0xFF) << 8;
break;
case 4:
xBufferSize += (((int)socketData.dataBuffer[posx++]) & 0xFF) << 24;
xBufferSize += (((int)socketData.dataBuffer[posx++]) & 0xFF) << 16;
xBufferSize += (((int)socketData.dataBuffer[posx++]) & 0xFF) << 8;
xBufferSize += (((int)socketData.dataBuffer[posx++]) & 0xFF);
break;
}
BufferAlocate = ReceiveData(
(BufferReceiveLenght - ResultBytesLength),
4,
xBufferSize,
socketData
);
}
char[] charsLength =
new char[ResultBytesLength];
System.Text.Decoder _Decoder = System.Text.Encoding.UTF8.GetDecoder();
_Decoder.GetChars(
socketData.dataBuffer,
0,
ResultBytesLength,
charsLength,
0);
int BufferSize = 0;
int pos = 0;
byte[] dataBuffer;
if (BufferAlocate == 0)
{
BufferSize += (((int)socketData.dataBuffer[pos++]) & 0xFF) << 24;
BufferSize += (((int)socketData.dataBuffer[pos++]) & 0xFF) << 16;
BufferSize += (((int)socketData.dataBuffer[pos++]) & 0xFF) << 8;
BufferSize += (((int)socketData.dataBuffer[pos++]) & 0xFF);
dataBuffer = new byte[BufferSize];
}
else
{
dataBuffer = new byte[BufferAlocate];
}
int BytesReceive = socketData._Socket.Receive(dataBuffer,
dataBuffer.Length,
SocketFlags.None
);
char[] charLenght = new char[BytesReceive];
string Message = string.Empty;
System.Text.Decoder decoder = System.Text.Encoding.UTF8.GetDecoder();
decoder.GetChars(
dataBuffer, 0, BytesReceive, charLenght, 0);
Message += new string(charLenght);
if (BytesReceive < BufferSize)
{
Message +=
this.ReceiveData(
BytesReceive,
BufferSize,
socketData._Socket
);
}
if ((Message != null) || (Message != ""))
{
Instrumento = Message.Substring(0, 8);
Message = Message.Remove(0, 8);
ThreadPool.QueueUserWorkItem(new WaitCallback(
delegate(object required)
{
this.MessageBroker(
Instrumento.Trim(),
Message);
}));
}
BufferAlocate = 0;
LastPacket = DateTime.Now;
TheadWaitOne();
}
}
catch (SocketException se) {
logger.Error("OnDataReceived(SocketEx): " + se.Message + " ErrorCode: " + se.ErrorCode +
" Native: " + se.NativeErrorCode +
" SocketError: " + se.SocketErrorCode, se);
logger.Warn("OnDataReceived(): Encerrando conexao com MDS");
// Falha de conexão
this.MDSSocketClose(socketData);
}
catch (Exception ex)
{
logger.Error("OnDataReceived(): " + ex.Message, ex);
this.MDSSocketClose(socketData);
}
}