[Python-Dev] ssl module, non-blocking sockets and asyncore integration (original) (raw)

Bill Janssen janssen at parc.com
Wed Sep 17 19:07:03 CEST 2008

Giampaolo Rodola' <gnewsg at gmail.com> wrote:

In the meanwhile I noticed something in the ssl.py code which seems to be wrong:

def recv (self, buflen=1024, flags=0): if self.sslobj: if flags != 0: raise ValueError( "non-zero flags not allowed in calls to sendall() on %s" % self.class) while True: try: return self.read(buflen) except SSLError, x: if x.args[0] == SSLERRORWANTREAD: continue else: raise x else: return socket.recv(self, buflen, flags) I don't know the low levels but that while statement which continues in case of SSLERRORWANTREAD seems to be wrong (blocking), at least when dealing with non-blocking sockets. I think the proper way of doing recv() here is letting SSLERRORWANTREAD propagate and let the upper application (e.g. asyncore) deal with it.

It's an interesting point. I'm not sure the underlying code will ever raise this exception. Please file a bug report to help us track this.

Thanks.

Bill

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