private void OnAsyncRead(IAsyncResult asyncResult)
{
System.Net.Sockets.NetworkStream stream = (System.Net.Sockets.NetworkStream)asyncResult.AsyncState;
m_RecvLen = stream.EndRead(asyncResult);
if (m_RecvLen < 0)
{
return;
}
Array.Copy(m_RecvBuffer, 0, m_DataBuffer, m_DataLen, m_RecvLen);
m_DataLen += m_RecvLen;
m_RecvLen = 0;
while (MakeRealPacket())
{
;
}
m_AllDone.Set();
}
/// <summary>
/// End async read operation
/// </summary>
private void EndReadFromClient(IAsyncResult ar)
{
try
{
System.Net.Sockets.NetworkStream ns = ar.AsyncState as System.Net.Sockets.NetworkStream;
if (ns.CanRead)
{
int len = ns.EndRead(ar);
if (len == 4) // Look for 4-bit length header
{
int dataLen = BitConverter.ToInt32(this.__dataBuffer, 0); // Get new info
byte[] data = new byte[dataLen];
int offset = 0;
while (offset < dataLen)
{
offset += ns.Read(data, offset, dataLen - offset);
}
//ns.Read(data, 0, dataLen);
Thread t = new Thread(this.UnsealPacket);
t.Name = "ServerUnsealPacket";
t.Start(data);
}
}
}
catch (Exception)
{
}
finally
{
try
{
if (this._tcpClient.Client.Connected)
{
this.BeginReadFromClient();
}
}
catch (Exception) { }
}
}
public void ReceiveDataAndEnqueue()
{
log.Context = System.Reflection.MethodBase.GetCurrentMethod().DeclaringType.FullName + "." + System.Reflection.MethodBase.GetCurrentMethod().Name;
log.WriteLog("ReceiveData and Enqueue thread started...");
string s;
int iCRat, iCRcount;
string [] sa;
int length = 0;
string sLastErrorMessage = "";
while (!m_bDone)
{
try
{
try
{
m_NetworkStream = m_TCPClient.GetStream();
System.IAsyncResult asr = m_NetworkStream.BeginRead(m_bytesIncomingBuffer,m_iBufferLength,m_iBufferMaxLength -
m_iBufferLength,null,null);
while (!asr.IsCompleted && !m_bDone)
{
System.Threading.Thread.Sleep(100);
}
if (m_bDone)
{
continue;
}
//asr.AsyncWaitHandle.WaitOne();
length = m_NetworkStream.EndRead(asr);
}
catch (System.IO.IOException ioex)
{
if (null != ioex.InnerException)
{
if (ioex.InnerException is System.Net.Sockets.SocketException)
{
int iErrorCode = ((System.Net.Sockets.SocketException)ioex.InnerException).ErrorCode;
string sErrorMessage = ((System.Net.Sockets.SocketException)ioex.InnerException).Message;
sLastErrorMessage = "ReceiveDataAndEnqueue: Error Code = " + iErrorCode.ToString() + " Description = " + sErrorMessage;
}
else
{
sLastErrorMessage = "ReceiveDataAndEnqueue: Unknown Error detected. Description = " + ioex.Message;
}
log.WriteLog(sLastErrorMessage);
}
m_bDone = true;
m_bConnected = false;
}
catch (System.Exception ex)
{
sLastErrorMessage = "ReceiveDataAndEnqueue: Unknown Error detected. Description = " + ex.Message;
log.WriteLog(sLastErrorMessage);
m_bDone = true;
m_bConnected = false;
}
if(!m_bConnected)
{
OnConnectionErrorReceived(this,sLastErrorMessage);
continue;
}
if (m_bDone)
continue;
if (0 == length)
{ // connection must have been reset
m_bDone = true;
m_bConnected = false;
continue;
}
m_iBufferLength += length;
// find all the messages in the stream
iCRcount = 0;
for (int i = 0; i < m_iBufferLength; i++)
{
if (m_bytesIncomingBuffer[i] == 13)
iCRcount++;
} // for
// post all messages from the stream
for (int i = 0; i < iCRcount; i++)
{
s = System.Text.Encoding.ASCII.GetString(m_bytesIncomingBuffer);
s = s.Substring(0,m_iBufferLength);
iCRat = s.IndexOf((char)13);
if (-1 != iCRat)
{
int iLen;
s = s.Substring(0,iCRat);
iLen = s.Length + 1;
m_iBufferLength -= iLen;
m_sLastResponse = s;
lock (m_qCommands.SyncRoot)
{
CarverLab.Oyster.Encoder.Command cmd;
string [] saParams;
sa = CarverLab.Oyster.Encoder.Command.DecodeCommand(System.Text.Encoding.ASCII.GetBytes(s),s.Length);
if (sa.Length > 1)
{
saParams = new string[sa.Length - 1];
Array.Copy(sa,1,saParams,0,sa.Length - 1);
cmd = new CarverLab.Oyster.Encoder.Command(sa[0],saParams);
}
else
{
cmd = new CarverLab.Oyster.Encoder.Command(sa[0],null);
}
m_qCommands.Enqueue(cmd);
}
byte [] bytes = new byte[m_iBufferLength];
Array.Copy(m_bytesIncomingBuffer,0,bytes,0,m_iBufferLength);
CarverLab.Oyster.Encoder.CommandEventArgs cea = new CarverLab.Oyster.Encoder.CommandEventArgs(bytes, ref m_qCommands);
OnMessageReceived(cea);
m_EventMessageAvailable.Set();
Array.Copy(m_bytesIncomingBuffer,iLen,m_bytesIncomingBuffer,0,m_iBufferLength);
Array.Clear(m_bytesIncomingBuffer,m_iBufferLength,m_iBufferMaxLength - m_iBufferLength);
} // if
} // for
}
catch (System.Exception ex)
{
log.WriteLog("Exception: " + ex.Message);
}
} // while
m_EventThreadComplete.Set();
}
protected bool readBytes(System.Net.Sockets.NetworkStream ns, System.IO.MemoryStream response, System.String waitFor, bool machresponseend)
{
bool error = false;
byte[] readBytes = new byte[client.ReceiveBufferSize];
int nbytes = 0;
System.String lastBoundary = System.String.Empty;
if (log.IsDebugEnabled)
{
log.Debug("Reading response");
}
System.IAsyncResult result = ns.BeginRead(readBytes, 0, readBytes.Length, null, null);
for (long waiting = 0; !error && ns.CanRead && result != null; nbytes = 0)
{
try {
if (!result.IsCompleted)
{
System.Threading.Thread.Sleep(50);
waiting += 50;
}
if (result.IsCompleted)
{
nbytes = ns.EndRead(result);
result = null;
waiting = 0;
}
else if (waiting > this.timeoutResponse)
{
lastErrorMessage = "Read timeout";
if (log.IsErrorEnabled)
{
log.Error(lastErrorMessage);
}
result = null;
error = true;
}
} catch (System.Exception e) {
error = true;
nbytes = 0;
lastErrorMessage = "Read error";
if (log.IsErrorEnabled)
{
log.Error(lastErrorMessage, e);
}
}
if (!error && nbytes > 0)
{
if (log.IsDebugEnabled)
{
log.Debug("Read " + nbytes + " bytes");
}
response.Write(readBytes, 0, nbytes);
// Only test waitfor secuence if there is no data for reading
// and there are enouth data available for comparing
if (!ns.DataAvailable && response.Length > waitFor.Length)
{
// The waitfor text must be the last portion of the response
if (machresponseend)
{
response.Seek(response.Length - waitFor.Length, System.IO.SeekOrigin.Begin);
response.Read(readBytes, 0, waitFor.Length);
lastBoundary = System.Text.Encoding.ASCII.GetString(readBytes, 0, waitFor.Length);
// The waitfor text must be in the begining of the last line of the response
}
else
{
response.Seek(0, System.IO.SeekOrigin.Begin);
System.IO.StreamReader reader = new System.IO.StreamReader(response);
System.String line = System.String.Empty;
for (System.String tmp = reader.ReadLine(); tmp != null; line = tmp, tmp = reader.ReadLine())
{
}
if (line != null && line.Length >= waitFor.Length)
{
lastBoundary = line.Substring(0, waitFor.Length);
}
reader.DiscardBufferedData();
reader = null;
response.Seek(0, System.IO.SeekOrigin.End);
}
}
// We haven't finished, so start a new async read
if (lastBoundary != waitFor)
{
result = ns.BeginRead(readBytes, 0, readBytes.Length, null, null);
}
}
}
response.Flush();
if (log.IsDebugEnabled)
{
log.Debug(System.String.Concat("Reading response finished. Error: ", error, ", lenght: ", response.Length));
}
// Discard response if there has been a read error.
if (error)
{
response.SetLength(0);
}
else if (response.Length == 0)
{
error = true;
}
return(!error);
}
