[issue10878] asyncore does not react properly on close()

Teodor Georgiev report at bugs.python.org
Mon Jan 10 07:40:38 CET 2011


New submission from Teodor Georgiev <lv_tokata at yahoo.com>:

I am trying to add a simple timer to each created socket and destroy it
once the timer expires:

class client(asyncore.dispatcher):
    def __init__(self,host):
    ...
    self.timeout = time.time() + 5

    def readable(self):
        if time.time() >= self.timeout:
            self.close()
        return True

When running that code, it raises an exception:

asyncore.loop(timeout=0.8)
  File "/usr/lib/python2.6/asyncore.py", line 211, in loop
    poll_fun(timeout)
  File "/usr/lib/python2.6/asyncore.py", line 144, in poll
    raise
  File "/usr/lib/python2.6/asyncore.py", line 141, in poll
    r, w, e = select.select(r, w, e, timeout)
select.error: (9, 'Bad file descriptor')


Although del_channel is executed properly and the socket is removed from the map, the poll function is not updated with that info and continues to keep the socket into the r,w,e.

----------
components: Library (Lib)
messages: 125882
nosy: tgeorgiev
priority: normal
severity: normal
status: open
title: asyncore does not react properly on close()
versions: Python 2.6, Python 2.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue10878>
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