[issue3890] ssl.SSLSocket.recv() implementation may not work with non-blocking sockets

[Giampaolo Rodola']

Giampaolo Rodola' <billiejoex at users.sourceforge.net> added the comment:

> The intuitive explanation seems to be:
> - there are some bytes available for reading on the *TCP socket*, 
> therefore asyncore calls the read handler
> - however, there are not enough bytes for OpenSSL to actually decrypt 
> any data, which is why we get SSL_ERROR_WANT_READ when trying to read 
> from the *SSL socket*
> The following patch seems to fix test_ftplib; any thoughts?

The patch seems ok to me. This is how it was supposed to be in the first place if ssl.py behaved as expected with non blocking sockets.

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<http://bugs.python.org/issue3890>
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