private void ProcessSend(SocketAsyncEventArgs workerEventArgs)
{
DataHoldingUserToken <T> token = (DataHoldingUserToken <T>)workerEventArgs.UserToken;
token.WriteDataBytesSent += workerEventArgs.BytesTransferred;
// --- Logging / Debugging
_trace.Sent(_settings.CustomState, token, workerEventArgs.GetRemoteIpEndPoint(), workerEventArgs.BytesTransferred);
// ---
if (workerEventArgs.SocketError != SocketError.Success)
{
token.Reset();
CloseClientSocket(workerEventArgs);
return;
}
if (token.WriteDataBytesRemaining > 0)
{
// If some of the bytes in the message have NOT been sent,
// then we will need to post another send operation
StartSend(workerEventArgs);
}
else
{
if (token.CloseAfterSend)
{
CloseClientSocket(workerEventArgs);
}
else
{
StartReceive(workerEventArgs);
}
}
}
/// <summary>
/// Begin sending data
/// </summary>
/// <param name="workerEventArgs"></param>
private void StartSend(SocketAsyncEventArgs workerEventArgs)
{
DataHoldingUserToken <T> token = (DataHoldingUserToken <T>)workerEventArgs.UserToken;
if (token.WriteDataBytesRemaining <= _settings.IoBufferSize)
{
// Whole remaining message will fit in buffer.
workerEventArgs.SetBuffer(token.WriteBufferOffset, token.WriteDataBytesRemaining);
Buffer.BlockCopy(token.WriteData, token.WriteDataBytesSent, workerEventArgs.Buffer, token.WriteBufferOffset, token.WriteDataBytesRemaining);
// --- Logging / Debugging
_trace.Sending(_settings.CustomState, token, workerEventArgs.GetRemoteIpEndPoint(), workerEventArgs.Buffer, token.WriteBufferOffset, token.WriteDataBytesRemaining);
// ---
}
else
{
// Message to big to all go in buffer.
workerEventArgs.SetBuffer(token.WriteBufferOffset, _settings.IoBufferSize);
Buffer.BlockCopy(token.WriteData, token.WriteDataBytesSent, workerEventArgs.Buffer, token.WriteBufferOffset, _settings.IoBufferSize);
// We update the token.WriteDataBytesSent once the Sending has been confirmed.
// --- Logging / Debugging
_trace.Sending(_settings.CustomState, token, workerEventArgs.GetRemoteIpEndPoint(), workerEventArgs.Buffer, token.WriteBufferOffset, _settings.IoBufferSize);
// ---
}
bool runningAsync = workerEventArgs.AcceptSocket.SendAsync(workerEventArgs);
if (!runningAsync)
{
ProcessSend(workerEventArgs);
}
}