NullReferenceException in Session.cs_line 4353

2 posts, 0 answers
  1. Frank
    Frank avatar
    1 posts
    Member since:
    May 2011

    Posted 17 Nov 2016 Link to this post

    Hello Support,

    I have a problem with Fiddler v4.6.3.44034 while recording a session against a https-Server.

    The following exception is recorded in the log:

    23:00:10:3693 Automatic authentication of Session #659 was unsuccessful. System.NullReferenceException Object reference not set to an instance of an object.
       at Fiddler.Session.ž() in c:\JenkinsHome\jobs\FiddlerReleaseBuild\workspace\Fiddler2\Common\Core\Session.cs:line 4353

    The corresponding request is returing a 502 with the following response text:

    [Fiddler] The connection to the upstream proxy/gateway failed. Closing Fiddler,
    changing your system proxy settings, and restarting Fiddler may help.
    System.Exception Upstream Gateway refused requested CONNECT. 407


    Trying QuickExec  prefs set fiddler.composer.HTTPSProxyBasicCreds username:password does not help.


    Do you know a solution for this issue?



  2. Tsviatko Yovtchev
    Tsviatko Yovtchev avatar
    549 posts

    Posted 29 Nov 2016 Link to this post


    That's a weird one. Could you try doing this in FiddlerScript OnBeforeRequest:

    oSession["x-AutoAuth"] = "(default)"

    Tsviatko Yovtchev
    Telerik by Progress
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