[Python-Dev] [Bug #111620] lots of use of send() without verifying amount of data sent

[Charles G Waldman]

I'm jumping in late to this discussion to mention to mention that even
for sockets in blocking mode, you can do sends with the MSG_DONTWAIT
flag:

sock.send(msg, socket.MSG_DONTWAIT)

and this will send only as much data as can be written immediately.
I.E., a per-message non-blocking write, without putting the socket
into blocking mode.

So if somebody decides to raise an exception on short TCP writes, they
need to be aware of this.  Personally I think it's a bad idea to be
raising an exception at all for short writes.