///<summary>Called when we have sent data to the local client.<br>When all the data has been sent, we will start receiving again from the remote host.</br></summary>
///<param name="ar">The result of the asynchronous operation.</param>
protected void OnClientSent(IAsyncResult ar)
{
lock (_bufferLock)
{
try
{
if (ClientSocket == null)
{
return;
}
int Ret = ClientSocket.EndSend(ar);
if (Ret > 0)
{
if (OnClientSentEnd != null)
{
//OnClientSentEnd.BeginInvoke(ClientSocket, this, _cachedRemoteBufferHeaders, _cachedRemoteBuffer, false, null, null);
OnClientSentEnd.Invoke(ClientSocket, this, _cachedRemoteBufferHeaders, _cachedRemoteBuffer.Count == 0 ? null : _cachedRemoteBuffer, false);
}
if (!Cancel)
{
DestinationSocket.BeginReceive(RemoteBuffer, 0, RemoteBuffer.Length, SocketFlags.None, new AsyncCallback(OnRemoteReceive), DestinationSocket);
}
else
{
Dispose();
}
return;
}
}
catch
{
}
Dispose();
}
}
///<summary>Called when we have received data from the remote host.<br>Incoming data will immediately be forwarded to the local client.</br></summary>
///<param name="ar">The result of the asynchronous operation.</param>
protected void OnRemoteReceive(IAsyncResult ar)
{
lock (_bufferLock)
{
try
{
if (DestinationSocket == null)
{
return;
}
int Ret = DestinationSocket.EndReceive(ar);
if (Ret <= 0)
{
if (OnRemoteReceivedEnd != null)
{
if (_cachedRemoteBuffer != null)
{
//OnRemoteReceivedEnd.BeginInvoke(DestinationSocket, this, _cachedRemoteBufferHeaders, _cachedRemoteBuffer, true, null, null);
OnRemoteReceivedEnd.Invoke(DestinationSocket, this, _cachedRemoteBufferHeaders, _cachedRemoteBuffer.Count == 0 ? null : _cachedRemoteBuffer, true);
}
else
{
OnRemoteReceivedEnd.Invoke(DestinationSocket, this, _cachedRemoteBufferHeaders, _cachedRemoteBuffer, true);
}
}
if (OnClientSentEnd != null)
{
if (_cachedRemoteBufferHeaders != null)
{
//OnClientSentEnd.BeginInvoke(ClientSocket, this, _cachedRemoteBufferHeaders, _cachedRemoteBuffer, true, null, null);
OnClientSentEnd.Invoke(ClientSocket, this, _cachedRemoteBufferHeaders, _cachedRemoteBuffer.Count == 0 ? null : _cachedRemoteBuffer, true);
}
else
{
OnClientSentEnd.Invoke(ClientSocket, this, _cachedRemoteBufferHeaders, _cachedRemoteBuffer, true);
}
}
Dispose();
return;
}
_cachedRemoteBuffer.AddRange(RemoteBuffer);
if (_cacheRemoteBufferHeaders)
{
_cachedRemoteBufferHeaders = Encoding.Default.GetString(_cachedRemoteBuffer.ToArray()).TrimEnd("\0".ToCharArray());
int index = _cachedRemoteBufferHeaders.IndexOf("\r\n\r\n");
if (index != -1)
{
_cachedRemoteBufferHeaders = _cachedRemoteBufferHeaders.Substring(0, index);
_cacheRemoteBufferHeaders = false;
if (Ret != index + 4)
{
_cachedRemoteBuffer = _cachedRemoteBuffer.GetRange(index + 4, _cachedRemoteBuffer.Count - index - 4);
}
else
{
_cachedClientBuffer.Clear();
_cachedRemoteBuffer.Clear();
}
if (OnRemoteHeadersParsed != null)
{
OnRemoteHeadersParsed.Invoke(_cachedRemoteBufferHeaders);
}
}
}
if (OnRemoteReceivedEnd != null)
{
OnRemoteReceivedEnd.Invoke(DestinationSocket, this, _cachedRemoteBufferHeaders, _cachedRemoteBuffer.Count == 0 ? null : _cachedRemoteBuffer, false);
//OnRemoteReceivedEnd.BeginInvoke(DestinationSocket, this, _cachedRemoteBufferHeaders, _cachedRemoteBuffer.Count == 0 ? null : _cachedRemoteBuffer, false, null, null);
}
if (!Cancel)
{
ClientSocket.BeginSend(RemoteBuffer, 0, Ret, SocketFlags.None, new AsyncCallback(OnClientSent), ClientSocket);
}
else
{
Dispose();
}
}
catch
{
Dispose();
}
}
}
