Fiddler suddenly cannot capture anything

7 posts, 0 answers
  1. willie
    willie avatar
    4 posts
    Member since:
    Oct 2014

    Posted 09 Nov 2015 Link to this post

    Dear Sir/Madam 

    hopefully someone who can help me to deal with my problem 

    I don't know why i cannot use fiddler anymore , and I had tried remove it and reset it again ,but it's working ,on the other hand , I was using as  URL http://127.0.0.1:8888/troubleshooter.cgi to get message  as following 

     

    Fiddler Echo Service

    GET /troubleshooter.cgi HTTP/1.1 Host: 127.0.0.1:8888 Connection: keep-alive Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8 Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.71 Safari/537.36 Accept-Encoding: gzip, deflate, sdch Accept-Language: zh-TW,zh;q=0.8,en-US;q=0.6,en;q=0.4,zh-CN;q=0.2 This page returned a HTTP/200 response 
    Originating Process Information: chrome:4676

    Alternate hostname test

    "DNS_PROBE_FINISHED_NXDOMAIN"

     

  2. Eric Lawrence
    Admin
    Eric Lawrence avatar
    833 posts

    Posted 09 Nov 2015 Link to this post

    The DNS_PROBE_FINISHED_NXDOMAIN message indicates that your browser isn't configured to send data to the Fiddler proxy.

    Do you have a similar problem with IE? Do you have any Chrome extensions installed that transfer your traffic-- e.g. a download extension or a proxy extension?

    Is there any change if you start a new instance of chrome using the command line:

        chrome --proxy-server=http://127.0.0.1:8888

    Regards,
    Eric Lawrence
    Telerik
    Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Feedback Portal and vote to affect the priority of the items
  3. willie
    willie avatar
    4 posts
    Member since:
    Oct 2014

    Posted 09 Nov 2015 in reply to Eric Lawrence Link to this post

    Hi Eric 

    Thank you very much for your response soon , IE has the same problem , in fact , I have used Fiddler for a while and it has used very well , but this time I don't know what's going on with my problems ,maybe this is the reason why cannot use Fiddler anymore.

    A coupon of days ago I had tried to catch and watch Facebook data with Fiddler and I had changed some setting on Fiddler. what can i do , remove old and setup new Fiddler again (I've tried ) , thanks again , Willie .

  4. willie
    willie avatar
    4 posts
    Member since:
    Oct 2014

    Posted 09 Nov 2015 in reply to willie Link to this post

    sorry Eric

    Maybe you can tell me what kinds of data or images you want to know or check what wrong with my , please let me know ,thanks again 

  5. Eric Lawrence
    Admin
    Eric Lawrence avatar
    833 posts

    Posted 10 Nov 2015 Link to this post

    Sharing a screenshot of the Fiddler window just after you use the Help > Troubleshoot command might be helpful in understanding why you're no longer capturing traffic.

    Regards,
    Eric Lawrence
    Telerik
    Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Feedback Portal and vote to affect the priority of the items
  6. willie
    willie avatar
    4 posts
    Member since:
    Oct 2014

    Posted 10 Nov 2015 in reply to Eric Lawrence Link to this post

    Hi Eric 

    Thank again , as following message and attach files that I wish all of information can help you to find out my problems

     

    Server not found

    Firefox can't find the server at ipv6.fiddler.

        Check the address for typing errors such as ww.example.com instead of www.example.com
        If you are unable to load any pages, check your computer's network connection.
        If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web.

     

  7. Eric Lawrence
    Admin
    Eric Lawrence avatar
    833 posts

    Posted 11 Nov 2015 Link to this post

    Hello,

    The Firefox screenshot shows that Firefox is not configured to send its traffic to the Fiddler proxy server. This article explains how to ensure that Firefox is properly configured to send its traffic to Fiddler (which exposes its proxy server at 127.0.0.1:8888). The screenshot shows that you have many Firefox extensions installed, one or more of which may be changing your systems' proxy settings.

    Other entries in the Fiddler screenshot show that Fiddler is capturing requests from Chrome and Internet Explorer but also suggest that those browsers' proxy settings are not pointed at Fiddler. This in turn suggests that there's probably some software on your system (security software, VPN software, or the like) which is preventing the browser's proxy setting from being set correctly.

    While Fiddler is running and capturing, click Tools > WinINET options. Click the LAN Settings button. What do you see on the screen that appears?

    Regards,
    Eric Lawrence
    Telerik
    Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Feedback Portal and vote to affect the priority of the items
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