Subj : WinSock
To   : Jon Justvig
From : Digital Man
Date : Wed Jun 13 2018 12:24 pm

  Re: WinSock
  By: Jon Justvig to Digital Man on Wed Jun 13 2018 04:29 am

 >   Re: WinSock
 >   By: Digital Man to Jon Justvig on Tue Jun 12 2018 05:29 pm
 >
 >  >> char buffer[20];
 >
 >  > >>> int result;
 >
 >  > >>> // our recv loop
 >  > >>> while (true)
 >  > >>> {
 >
 >  > >>> result = recv(current_client, buffer, sizeof(buffer), 0); // recv
 >  > >>> cmds
 >
 >  > >>> Sleep(10);
 >
 >  > >>> if (result > 0)
 >  > >>> {
 >  > >>> cout << "\n\tMessage from client: " << buffer;
 >  > >>> send(current_client, (const char*)buffer, sizeof(buffer), 0);
 >  > >>> }
 >
 > > just above int result; ...
 >
 >  DM> So.. if you only receive 2 bytes (result == 2), you're still going to
 >  DM> send 20 (sizeof buffer)? That's probably not what you want.
 >
 > How might I receive between 2 and 12 bytes?

You're calling recv() with a max-length of 20 (sizeof buffer). That doesn't
mean you'll necessarily receive exactly 20 bytes. You could receive anywhere
between 0 and 20 bytes - the return value of recv() tells you how many bytes
you received, if any.

                                            digital man

This Is Spinal Tap quote #7:
Nigel Tufnel: That's just nitpicking, isn't it?
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