Omar Balbuena wrote:
> After some research, I've
> discovered it seems to be the Nagle Algorithm that's slowing me down,
> and I've added the proper lines of code and it seems to have no effect.
> But this looks like absolutely anything but Delayed Ack.
>
> My question is:
> Is it really Nagle?
My answer would be no;
I seem to remember that the Nagle delay happens only when there is
outstanding unacknowledged previously sent data when new data is provided by
the program to the TCP stack.
After frame 4 there is no outstanding unacknowledged data so I doubt that the
delay before 4 and 5 is due to Nagle.
That being said, I've no knowledge or experience of how Winsock works so the
above may or may not apply.
I do note one somewhat interesting thing.
The window size specified by ...129 is decreasing as it receives and acks
data (65040, 65031, ...).
Altho perfectly OK, this is an indication on some (many ?) TCP stacks that
the data is buffering up in the stack and not being processed by the
receiving program.
To be perfectly honest: I would revisit:
> I am absolutely sure this has nothing to do with software processing,
> because such thing never happened with serial ports and modem
> communication using the exact same layers.
Bill Meier
