Help Tracing urllib2 Error, Please?

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  • Larry Hale
    #1

    Help Tracing urllib2 Error, Please?

    Since it seems I have a "unique" problem, I wonder if anyone could
    point me in the general/right direction for tracking down the issue
    and resolving it myself.

    See my prior post @ http://groups.google.com/group/comp....6b55161?hl=en#
    for more info. (Python 2.5.2 on Win XP 64 ==>Squid Proxy requiring
    Authentication ==>Internet not working.)

    I've looked the urllib2 source over, but am having trouble following
    it. As previously mentioned, urllib2 initiates the request, Squid
    replies "407 error" that auth's required, and then urllib2 just stops,
    throwing error 407.

    Any though(s) on what to check out?

    It's frustrating (to say the least) that it seems so many are
    successfully accomplishing this task, and all's working perfectly for
    them, but I'm failing miserably.

    Would any quotes viewed in the HTTP traffic help? (Wireshark shows
    all! :) I don't even know what other info could help.

    Any info to get about Squid's configuration that might make it "non
    standard" in a way that could cause my problem? Any question(s) I
    should ask my Net Admin to relay info to you all?


    As always, any/all help greatly appreciated. Thanks! :)

    -Larry
    Tags: None
    • Rob Wolfe
      #2
      Re: Help Tracing urllib2 Error, Please?

      Larry Hale <larzluv@hotmai l.comwrites:
      Since it seems I have a "unique" problem, I wonder if anyone could
      point me in the general/right direction for tracking down the issue
      and resolving it myself.
      >
      See my prior post @ http://groups.google.com/group/comp....6b55161?hl=en#
      for more info. (Python 2.5.2 on Win XP 64 ==>Squid Proxy requiring
      Authentication ==>Internet not working.)
      >
      I've looked the urllib2 source over, but am having trouble following
      it. As previously mentioned, urllib2 initiates the request, Squid
      replies "407 error" that auth's required, and then urllib2 just stops,
      throwing error 407.
      >
      Any though(s) on what to check out?
      >
      It's frustrating (to say the least) that it seems so many are
      successfully accomplishing this task, and all's working perfectly for
      them, but I'm failing miserably.
      >
      Would any quotes viewed in the HTTP traffic help? (Wireshark shows
      all! :) I don't even know what other info could help.
      >
      Any info to get about Squid's configuration that might make it "non
      standard" in a way that could cause my problem? Any question(s) I
      should ask my Net Admin to relay info to you all?
      Maybe Squid is configured to not allow sending authentication
      directly in URI. Or maybe there is only digest scheme allowed.
      Try this:

      def getopener(proxy =None, digest=False):
      opener = urllib2.build_o pener(urllib2.H TTPHandler)
      if proxy:
      passwd_mgr = urllib2.HTTPPas swordMgr()
      passwd_mgr.add_ password(None, 'http://localhost:3128' , 'user', 'password')

      if digest:
      proxy_support = urllib2.ProxyDi gestAuthHandler (passwd_mgr)
      else:
      proxy_support = urllib2.ProxyBa sicAuthHandler( passwd_mgr)
      opener.add_hand ler(proxy_suppo rt)
      return opener


      def fetchurl(url, opener):
      f = opener.open(url )
      data = f.read()
      f.close()
      return data

      print fetchurl('http://www.python.org' , getopener('127. 0.0.1:3128'))
      print fetchurl('http://www.python.org' , getopener('127. 0.0.1:3128', digest=True))

      HTH,
      Rob

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