[Zope3-Users] Issue with xmlrpc call to zope3 xmlrpc view hanging, until original call interupted.

Roger Ineichen dev at projekt01.ch
Thu Oct 16 06:25:18 EDT 2008

Hi Tim

> Betreff: [Zope3-Users] Issue with xmlrpc call to zope3 xmlrpc 
> view hanging,until original call interupted.
> Hi
> I wonder if anyone can shed some light  on a problem I am 
> having with xmlrpc calls to a zope3 server.
> I am running zope3 from buildout on python2.5 on unbuntu.
> I have a view defined for xmlrpc (zope.app.publisher 3.5.0)  
> the same view is also defined for jsonrpc using z3c.jsonrpc
> I am testing with xmlrpclib and the z3c.jsonrpc proxy
> Everything works fine when testing the jsonrpc call. However 
> when performing the xmlrpc call the call hangs, until I 
> either kill the server, or the ctl ^c the test.
> I know the zcml registration for the view is correct as I end 
> up in the method of the view on the server,because I can put
> import pdb
> pdb.set_trace()
> in the method in question, and when I kill the client socket 
> the server thread advances to the set_trace call and I get 
> the stacktrace on the client as follows
> Traceback (most recent call last):
>   File "bin/python", line 136, in <module>
>     execfile(sys.argv[0])
>   File "x.py", line 6, in <module>
>     print x.iba.stores.name()
>   File "/usr/lib/python2.5/xmlrpclib.py", line 1147, in __call__
>     return self.__send(self.__name, args)
>   File "/usr/lib/python2.5/xmlrpclib.py", line 1437, in __request
>     verbose=self.__verbose
>   File "/usr/lib/python2.5/xmlrpclib.py", line 1185, in request
>     errcode, errmsg, headers = h.getreply()
>   File "/usr/lib/python2.5/httplib.py", line 1199, in getreply
>     response = self._conn.getresponse()
>   File "/usr/lib/python2.5/httplib.py", line 928, in getresponse
>     response.begin()
>   File "/usr/lib/python2.5/httplib.py", line 385, in begin
>     version, status, reason = self._read_status()
>   File "/usr/lib/python2.5/httplib.py", line 343, in _read_status
>     line = self.fp.readline()
>   File "/usr/lib/python2.5/socket.py", line 331, in readline
>     data = recv(1)
> KeyboardInterrupt
> It seems as if the publisher for xmlrpc is not reading 
> everything from the socket.
> I have been using xmlrpclib for years against zope2 and never 
> experienced sort of problem, and my current python 2.4 and 
> 2.5 xmlrpclib in ubuntu works fine against existing zope2 servers.
> I am using paste.httpserver .
> Any ideas, things I could try to diagnose the problem?

As far as I understand the problem is at the server side
if you receive a xmlrpc request and not if you use a 
XMLRPC client and will send a request.

The z3c.jsonrpc doesn't use anything similar then the xmlrpclib 
implementation. I mean the jsonrpc and xmlrpc implemenation are 
not comparable for that problem.

The z3c.json package offers a JSON python client. Only this
client uses similar patterns then the xmlrpclib package.

Roger Ineichen

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