Using chrome://net-export/ to troubleshoot ARERR 9350/9351 or http 0 errors - Remedy AR System Mid Tier

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    PRODUCT:

    Remedy AR System Server


    COMPONENT:

    AR System Mid Tier


    APPLIES TO:

    Any web application browsed using chrome



    QUESTION:

    Using the Chrome F12 network capture, some cancelled requests are seen but they are not capture with the Fiddler utility.   Other symptoms are that the users may see ARERR 9350/9351 errors with http status 0.
    How can I understand the reason behind that?
     


    ANSWER:

     To use chrome://net-export/

       
    • Open the Chrome browser 
    •  
    • Open this url "chrome://net-export/".  Select "include raw bytes"  and click "Start Logging to disk" (Chrome will ask you for the location of the file where log will be saved) 
    •  
    • Make sure the tab where net-export is open stays open, closing it will stop the logs too.
    •  
    • Navigate the application causing the problem
    •  
    • Once the problem replicates go back to "chrome://net-export/" tab and click "Stop Logging"
      
      User-added image
      
    This log can then be loaded by Chrome. 
    Some situations that have been found with this log  
       
    • Network cache (causing redirection from HTTP to https)
    •  
    • DNS issues as OS DNS entries expire too fast (every few seconds)
    •  
    • Network problem OS 10054 error
    •  
    • Connection aborted OS error 10053 
    •  
    • Traffic shaper on the ISP providing Server connectivity to Mid-tier server capping bandwidth 
    •  
    • Firewall blocking transactions or packets
    •  
    • Some chrome extensions like https://digitalguardian.com/ found to redirect from POST backchannel request to GET, but without the POST payload, therefore the request is invalid for Mid-tier purposes
      
    Reference article:    How to read Chrome Internals logs

     


    Article Number:

    000220296


    Article Type:

    FAQ/Procedural



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