"Didn't receive any data" is the wrong way of looking at this. It closes the
socket if it receives an EOF. A 0-byte return is an authoritative statement
that there *will be* no more data, not that there isn't any right now. "there
isn't any right now" is EAGAIN.
A couple of brief experiments
What effect would calling shutdown(SHUT_RD) at this point have? The kernel
already knows that no more data will be read. IIUC SHUT_RD would be useful
only if you want to indicate you are not interested in reading more without
having received an EOF.
On Fri, Jun 27, 2014 at 2:26 PM, Victor Stinner
Hi,
While reviewing an old asyncore issue,
http://bugs.python.org/issue12498
I read the source code of _SelectorSocketTransport. I see that
write_eof() calls sock.shutdown(socket.SHUT_WR). _read_ready() closes
the socket if it didn't receive any data. It can keep the socket open
to write more da
