[Python-Dev] Fixing send()

[Jeremy Hylton]

If we're making the std library routines that use sockets robust, I
expect we ought to think about exceptions that should be dealt with.
My Linux man page suggests that ENOBUFS and EINTR are errors that
indicate "try again."  There are probably other such errors on other
platforms. 

We use Python sockets and asyncore in ZEO (a Zope subsystem) and I've
found that every weird error that I've never heard of seems to occur
in the wild.  If we don't deal with these errors, then we've haven't
fully succeeded in making the calls robust.

Jeremy