[Twisted-Python] Problem in twisted.internet.tcp when using ssl

[Martin Sjögren]

ons 2002-07-10 klockan 17.04 skrev Itamar Shtull-Trauring:
> Martin Sjögren wrote:
> 
> > The writeSomeData method of Connection objects may sometimes be called
> > with a zero length buffer. This works fine when using plain TCP, but
> > when using ssl, this will cause a ZeroReturnError (which is completely
> > bogus!) and everything...well...blows up.
> 
> In the interest of not breaking anything which might possibly, however 
> unlikely, depend on tcp.py's behaviour, I've made this change in ssl.py. 
> So cvs up and tell me if it's ok now.

I've looked into this a bit more, and found the following in the man
page for write(2) on Solaris.

"""
If nbyte is 0, write() will  return  0  and  have  no  other
results  if  the  file  is  a  regular  file; otherwise, the
results are unspecified.
"""

My guess is that you would never want to call write or send with a
zero-length string if you want to be portable.


Regards,
Martin

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Martin Sjögren
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