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Craig Warren
craig.warren at encorp.com
Thu Jan 27 11:38:40 EST 2005
Yeah ,I didn't see this problem till we moved to Python2.4. With Python2.3 the old expat libraries worked. Craig Indrek Järve wrote: > Didn't Python 2.4 include a newer version of the expat library? > *checks* > Indeed, the post is here: > http://mail.python.org/pipermail/xml-sig/2004-August/010405.html > The library mismatch could be the problem, as described in the thread > in the link: > http://mail.python.org/pipermail/python-list/2004-December/256676.html > > Regards, > Indrek > > Mark McClain wrote: > >> This is probably has something do to with the library conflicts. Our >> production servers (mod_python 3.1.x, apache 2.0.x, python 2.3.x) has >> been using xmlrpclib for over a year without any crashes. >> >> Have you compiled your own versions of apache,mod_python, and >> python? Or are you using the stock redhat versions? >> >> Mark >> >> On Jan 26, 2005, at 11:47 PM, David Fraser wrote: >> >>> Graham Dumpleton wrote: >>> >>>> Marco Catunda wrote .. >>>> >>>>> I haven't been able to use xmlrpclib with mod_python. >>>>> When I import xmlrpclib the apache server crash (segmentation fault), >>>>> the following code will be show it. >>>>> >>>>> ===================================== >>>>> from mod_python import apache >>>>> import xmlrpclib >>>>> >>>>> def handler( req ): >>>>> req.write("Hello World!") >>>>> return apache.OK >>>>> ===================================== >>>>> >>>>> My system: >>>>> RedHat ES 3 >>>>> Apache 2.0.52 >>>>> Python 2.4 >>>>> >>>>> Is there a way to fix it? >>>>> >>>> >>>> The xmlrpclib module uses a Python XML module which looks like it >>>> tries >>>> to use expat. >>>> >>>> >>>>>>> import xmlrpclib >>>>>>> import sys >>>>>>> sys.modules.keys() >>>>>>> >>>> ['cStringIO', 'copy_reg', 'sre_compile', '_sre', 'site', >>>> '__builtin__', 'xml.parsers.expat', 'xml._xmlplus', 'xml.parsers', >>>> 'xml.sys', '__main__', 'operator', 'xml.parsers.pyexpat', 'xml', >>>> 'posixpath', 'base64', 'binascii', 'pyexpat.errors', >>>> 'sre_constants', 're', 'os.path', 'stat', 'zipimport', 'string', >>>> 'warnings', 'UserDict', '_xmlplus', 'sys', 'readline', 'types', >>>> 'strop', 'sre', 'signal', 'xmlrpclib', 'linecache', 'posix', >>>> 'pyexpat.model', 'time', 'exceptions', 'sre_parse', 'os'] >>>> >>>> It is a frequent problem that the version of the expat shared >>>> library which >>>> is used by the Python modules differs to that which Apache or PHP may >>>> already be using. This difference can result in a server crash. >>>> >>>> You should thus try to determine if you have multiple versions of >>>> expat >>>> present and whether these different packages are using different >>>> versions. >>>> >>>> On Linux, you might be able to use "ldd" to work this out by >>>> running it >>>> on the "httpd" binary, as well as the appropriate .so Python module. >>>> >>>> ldd /somepath-to-apache-bin-dir/httpd >>>> ldd /somepath-to-python-module-dir/lib-dynload/pyexpat.so >>>> ldd /somepath-to-apache-module-dir/*php*.so >>>> >>>> The paths will need to be adjusted obviously. >>>> >>>> Please post the results of ldd if you can as am curious to see if this >>>> does help, I have never suggested trying it before. >>>> >>>> Graham >>>> >>>> >>> Since this is a common problem, I wonder if there may be a way to >>> put checks into the Python modules that use expat to prevent this >>> happening? >>> >>> David >>> _______________________________________________ >>> Mod_python mailing list >>> Mod_python at modpython.org >>> http://mailman.modpython.org/mailman/listinfo/mod_python >>> >> >> _______________________________________________ >> Mod_python mailing list >> Mod_python at modpython.org >> http://mailman.modpython.org/mailman/listinfo/mod_python > > > > _______________________________________________ > Mod_python mailing list > Mod_python at modpython.org > http://mailman.modpython.org/mailman/listinfo/mod_python
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