select.select and socket.setblocking

Jean-Paul Calderone exarkun at divmod.com
Tue Dec 30 21:57:25 CET 2008


On Tue, 30 Dec 2008 15:55:51 -0500, Jean-Paul Calderone <exarkun at divmod.com> wrote:
>On Tue, 30 Dec 2008 14:41:17 -0600, Grant Edwards <grante at visi.com> wrote:
>>On 2008-12-30, Francesco Bochicchio <bockman at virgilio.it> wrote:
>>>3. AFAIK (sorry, I feel acronym-ly today ;), there is no difference in
>>>select between blocking and non-blocking mode. The difference is in the
>>>recv (again, assuming that you use TCP as protocol, that is AF_INET,
>>>SOCK_STREAM), which in the blocking case would wait to receive all the
>>>bytes that you requested,
>>
>>No, in blocking mode it will wait to receive _some_ data (1 or
>>more bytes).  The "requested" amount is strictly an upper
>>limit: recv won't return more than the requested number of
>>bytes, but it might return less.
>
>Hi Grant,
>
>I don't think you read Francesco's message carefully enough. :)

Ah, no, it was I who didn't read carefully enough.  Nevermind.

Jean-Paul



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