Non-blocking read() in httplib?
b.niemann at betternet.de
Mon Jul 12 14:31:19 CEST 2004
Marcin Ciura wrote:
> I have the following problem with HTTPResponse:
> import httplib #, select
> connection = httplib.HTTPConnection(host)
> connection.request('GET', url)
> response = connection.getresponse()
> # print response.status, response.reason gives '200 OK'
> # ready = select.select([response],,, 5.0) # no fileno() method
> # signal.alarm(5) # not on Windows
> # ...
> data=response.read() # this sometimes blocks
> Sometimes the read() call blocks forever for no obvious reason
> (response.status is OK); it even cannot be interrupted from the keyboard
> (on Windows).
> I would like to defend against this by throwing an exception when the
> read() lasts too long. But I cannot use select.select(), because
> HTTPResponse has no fileno() method. Neither can I use signal.alarm(),
> as it is for Unixes only.
> Is there any other way to break read() or make it non-blocking?
I'm using timeoutsocket.py which allows you to globally specify a
timeout for all sockets. Used signal.alarm before, which caused more
problems than it solved...
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