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Chris Jackson
christopher.jackson at gmail.com
Wed Jan 26 18:55:35 EST 2005
On a simliar note, I was just about to post an XML problem I had using regular Python XML (minidom). <myconfig> mod_python version = 3.1.3 Apache version = 2.0.52 python version = 2.4 </myconfig> ... from xml.dom import minidom xmldoc = minidom.parse(myFile.xml) ... After analyzing the logs files, I find segmentation faults occurring causing the page to hand and never get displayed. I have tested this on two separate systems and the results are the same. I will try the methods described above and see what happens. ~= Chris =~ On Wed, 26 Jan 2005 18:36:40 -0500, Graham Dumpleton <grahamd at dscpl.com.au> 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 > _______________________________________________ > Mod_python mailing list > Mod_python at modpython.org > http://mailman.modpython.org/mailman/listinfo/mod_python >
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