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classification
Title: multiprocessing socket timeout will break client
Type: behavior Stage:
Components: Library (Lib) Versions: Python 2.7
process
Status: closed Resolution: duplicate
Dependencies: Superseder:
Assigned To: Nosy List: asksol, hume, jnoller
Priority: normal Keywords:

Created on 2010-09-14 08:28 by hume, last changed 2022-04-11 14:57 by admin. This issue is now closed.

Messages (5)
msg116375 - (view) Author: hume (hume) Date: 2010-09-14 08:28
when use multiprocessing managers, while use socket to communicate between server process and client process, if I used the global socket timeout feature(no matter how large the value is) the client will always say

  File "c:\python27\lib\multiprocessing\connection.py", line 149, in Client
    answer_challenge(c, authkey)
  File "c:\python27\lib\multiprocessing\connection.py", line 383, in answer_challenge
    message = connection.recv_bytes(256)         # reject large message
IOError: [Errno 10035] 

this is not reasonable, because this behaviour will make subprocess unable to use socket's timeout features globally.

Another question is line 138 in managers.py:
        # do authentication later
        self.listener = Listener(address=address, backlog=5)
        self.address = self.listener.address

backlog=5 will accept only 5 cocurrent connections, this is stupid, you'd better make this a argument that can be specified by user
msg116376 - (view) Author: hume (hume) Date: 2010-09-14 08:30
the above test is on windows
msg116447 - (view) Author: Jesse Noller (jnoller) * (Python committer) Date: 2010-09-15 13:54
Calling it stupid doesn't incentivize me to help you, or fix it.
msg116513 - (view) Author: hume (hume) Date: 2010-09-16 06:59
Oh, it's obvious that you've found a stupid bug in my description, if that frustrate you, I'd like to say sorry. 

So I would restate: "this is not so user friendly, would you be kindly enough to fix it?"
msg116876 - (view) Author: Jesse Noller (jnoller) * (Python committer) Date: 2010-09-19 16:33
Duplicate; 9897
History
Date User Action Args
2022-04-11 14:57:06adminsetgithub: 54060
2010-09-19 16:33:44jnollersetstatus: open -> closed
resolution: duplicate
messages: + msg116876
2010-09-16 06:59:57humesetmessages: + msg116513
2010-09-15 13:54:11jnollersetmessages: + msg116447
2010-09-15 01:55:05r.david.murraysetnosy: + jnoller, asksol
2010-09-14 08:30:15humesettype: behavior
messages: + msg116376
2010-09-14 08:28:40humecreate