[Yum-devel] [UG] urlgrabber https doesn't work with rpm module when fork

[Zhigang Wang]

Hi,

When importing rpm, this test (test_urlgrabber.py) doesn't work:

#!/usr/bin/env python

import os
import rpm

import urlgrabber


def test():
    option = {
        'copy_local': 1,
        'ssl_verify_peer': False,
        'ssl_verify_host': False,
    }
    urlgrabber.urlgrab('https://zhigang.us.oracle.com/vm/vm.cfg', '/tmp/vm.cfg',
**option)


def main():
    pid = os.fork()
    if pid:
        return
    test()


if __name__ == '__main__':
    main()


$ ./test_urlgrabber.py
[zhigang@zhigang tmp]$ Traceback (most recent call last):
  File "./test_urlgrabber.py", line 26, in <module>
    main()
  File "./test_urlgrabber.py", line 22, in main
    test()
  File "./test_urlgrabber.py", line 15, in test
    urlgrabber.urlgrab('https://zhigang.us.oracle.com/vm/vm.cfg', '/tmp/vm.cfg',
**option)
  File "/usr/lib/python2.7/site-packages/urlgrabber/grabber.py", line 694, in
urlgrab
    return default_grabber.urlgrab(url, filename, **kwargs)
  File "/usr/lib/python2.7/site-packages/urlgrabber/grabber.py", line 1130, in
urlgrab
    return _run_callback(opts.failfunc, opts)
  File "/usr/lib/python2.7/site-packages/urlgrabber/grabber.py", line 986, in
_run_callback
    return cb(obj)
  File "/usr/lib/python2.7/site-packages/urlgrabber/grabber.py", line 980, in
_do_raise
    raise obj.exception
urlgrabber.grabber.URLGrabError: [Errno 14] problem making ssl connection

If we don't import rpm, everything works fine.

It may related to this: 
http://article.gmane.org/gmane.comp.web.curl.library/38760

Maybe we need to fix it in rpm.

This bug is fatal when we use urlgrabber in a forking handler.

This is tested on RHEL6.4.

Please help to give some adverse on fixing it.

Thanks,

Zhigang

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