[Zope] Connecting New Zope to old ZEO server

Brian Brinegar brinegar at ecn.purdue.edu
Thu Dec 10 13:49:12 EST 2009

As part of a migration plan we would like to have a Zope client running
Zope 2.11.4 connect to a ZEO server running Zope 2.9.6 ZODB 3.6.2

When trying to connect we get an error the following error:

2009-12-10T10:09:48 INFO ZEO.ClientStorage (6145) Testing connection
<ManagedClientConnection ('', 17900)>
2009-12-10T10:09:48 ERROR ZEO.zrpc.Connection(C) (
bad handshake 'Z303'

Is it possible to have a new Zope connect to an old ZODB?


Brian Brinegar
Web Services Coordinator
Engineering Computer Network

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