[ZODB-Dev] Re: [Zope-dev] [ZEO] protocol problem

[Chris Withers]

Dieter Maurer wrote:
> 
> Not sure, whether this is the right list. If not, please advise a better
> place.

zodb-dev@zope.org is the place to be for ZEO and other weirdness ;-)

As for the problem, I get this too. Are you running on Windows perchance?

It would be really cool to solve these problems, so I guess we need to find soem
way of attracting Jeremy's attention :-)

cheers,

Chris

> We use Zope 2.5 together with ZEO 1.0b5 and there seems to be
> a problem with the communication between Zope and ZEO.
> 
>   Several times a day, Zope reports that it has been disconnected form
>   storage (a warning), that it tries to reconnect but fails
>   due to "error 131, 'Connection reset by peer'".
> 
>   ZEO on the other hand reports that it had opened the connection
>   and keeps it open until Zope stops.
> 
> There is one special setup:
> 
>   We check ZEO every minute for availability.
>   The script opens a ZEO connection and lets it load an object.
> 
>   I have something like a weak impression that connection
>   requests coming in at about the same time might confuse ZEO.
> 
> Any information would be appreaciated.
> 
> Annotated extract from Zope logfile:
> ====================================
> 
>   >  2002-02-24T12:01:09 PROBLEM(100) ClientStorage Disconnected from storage
>   >  ------
>   >  2002-02-24T12:01:09 INFO(0) client Trying to connect to server: ('ora', 8888)
>   >  ------
>   >  2002-02-24T12:01:09 ERROR(200) ZODB Couldn't load state for '\x00\x00\x00\x00\x00\t\x08>'
>   >  ------
>   >  2002-02-24T12:01:09 INFO(0) ClientStorage Connected to storage
>   Here we have apparently two log messages intermingled:
> 
>     The "ClientStorage Connected" and the "Error: Couldn't load state".
>   >  Traceback (innermost last):
>   >    File /local/home/zope/Zope/Base/lib/python/ZODB/Connection.py, line 446, in setstate
>   >    File /home/zope/Zope-9000/Base/lib/python/ZEO/ClientStorage.py, line 365, in load
>   >      (Object: ('ora', 8888))
>   >    File /home/zope/Zope-9000/Base/lib/python/ZEO/zrpc.py, line 239, in __call__
>   >  error: (131, 'Connection reset by peer')
> 
> Annotated extract from ZEO logfile:
> ===================================
> 
>   >  2002-02-24T12:01:08 INFO(0) ZEO Server Close 3501648
>   >  ------
>   >  2002-02-24T12:01:09 INFO(0) ZEO Server Connect 3501648 ('10.19.3.10', 33017)
>   The connection is opened here but only closed 7 hours later when
>   Zope stops.
>   >  ------
>   >  2002-02-24T12:02:09 INFO(0) ZEO Server Connect 3501720 ('10.19.1.129', 64202)
>   >  ......
>   >  2002-02-24T19:50:43 INFO(0) ZEO Server Close 3501720
>   >  ------
>   >  2002-02-24T19:51:33 INFO(0) ZEO Server Connect 3501720 ('10.19.3.10', 49795)
>   here, Zope has been stopped.
>   ZEO releases all "hanging" connections.
>   >  ------
>   >  2002-02-24T19:51:37 INFO(0) ZEO Server Close 3501648
>   >  ------
>   >  2002-02-24T19:51:37 INFO(0) ZEO Server Close 3501600
>   >  ------
>   >  2002-02-24T19:51:37 INFO(0) ZEO Server Close 3501504
> 
> Dieter
> 
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