[issue20951] SSLSocket.send() returns 0 for non-blocking socket

[Giampaolo Rodola']

Giampaolo Rodola' added the comment:

-1 about adding raise_on_blocking_send=False option as IMO it unnecessarily complicates the API.

Note: when working with plain sockets send() returning 0 means the connection has been closed by the other peer, same for os.sendfile().
It appears ssl module is the only one behaving differently therefore I'd be for signaling the discrepancy in the doc.

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<http://bugs.python.org/issue20951>
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