public bool Send(SenderAsyncEventArgs args)
{
args.Error = _socketException;
_senderContext.SendState = 0;
_senderContext.PartIndex = 0;
_senderContext.EventArgs = args;
_senderContext.CallBack = args.Completed;
args.Completed = SendDataTask;
args.UserToken = _senderContext;
return(SendDataTask(false, args));
}
public bool Flush(SenderAsyncEventArgs args)
{
if (_socketException != null)
{
args.Error = _socketException;
return(false);
}
if (_writingBufferIsFlushed == 0)
{
_sendingQueue.Enqueue(new ArraySegment <byte>(_writingBuffer, 0, _writingOffset));
Interlocked.Exchange(ref _writingBufferIsFlushed, 1);
}
EnterFlushing();
return(false);
}
private bool SendDataTask(bool async, SenderAsyncEventArgs args)
{
var context = (SenderContext)args.UserToken;
TryAgain:
if (context.EventArgs.HasError)
{
return(CallOnSendCompleted(async, context));
}
if (context.SendState == 0)
{
var writeResult = WriteArgumentsCountLine(context.EventArgs.DataToSend.Length);
if (!writeResult.HasValue)
{
return(true);
}
if (!writeResult.Value)
{
if (Flush(context.EventArgs))
{
return(true);
}
goto TryAgain;
}
context.SendState = 1;
}
if (context.SendState > 0 && context.SendState < 4)
{
for (; context.PartIndex < context.EventArgs.DataToSend.Length; context.PartIndex++)
{
if (context.SendState == 1)
{
var writeResult = WriteDataSizeLine(context.EventArgs.DataToSend[context.PartIndex].Length);
if (!writeResult.HasValue)
{
return(true);
}
if (!writeResult.Value)
{
if (Flush(context.EventArgs))
{
return(true);
}
goto TryAgain;
}
context.SendState = 2;
context.ArraySegment = new ArraySegment <byte>(context.EventArgs.DataToSend[context.PartIndex], 0,
context.EventArgs.DataToSend[context.PartIndex].Length);
}
if (context.SendState == 2)
{
var writeResult = WriteData(context.ArraySegment);
if (!writeResult.HasValue)
{
return(true);
}
context.ArraySegment = writeResult.Value;
if (context.ArraySegment.Count > 0)
{
if (Flush(context.EventArgs))
{
return(true);
}
goto TryAgain;
}
context.SendState = 3;
}
if (context.SendState == 3)
{
var writeResult = WriteNewLineToBuffer();
if (!writeResult.HasValue)
{
return(true);
}
if (!writeResult.Value)
{
if (Flush(context.EventArgs))
{
return(true);
}
goto TryAgain;
}
context.SendState = 1;
}
}
}
if (context.SendState != 4 && _autoFlush)
{
context.SendState = 4;
if (Flush(context.EventArgs))
{
return(true);
}
goto TryAgain;
}
return(CallOnSendCompleted(async, context));
}
private void SendDataTask(SenderAsyncEventArgs args)
{
SendDataTask(true, args);
}
