This is a quick guide to help you start capturing HTTP traffic when requested by support. This can be helpful either for network traffic issues or for understanding issues with page content loading.

Don't forget to mention the IP Address of the servers involved so Support can go through the TCP dump. Also please mention the time when you performed the operation requested by support.

If you are using HTTPS, try to capture on a HTTP channel if possible. Alternatively, you can try capturing on Windows using Fiddler after enabling the decrypt HTTPS functionality.

Linux/Unix: Wireshark

  1. Install Wireshark. (Mirror here)
  2. Open your Internet browser.
  3. Clear your browser cache.
  4. Open Wireshark
  5. Click on "Capture > Interfaces". A pop up window will show up.
  6. You probably want to capture traffic that goes through your Ethernet Driver. Click on the Start button to start capturing traffic via this interface.
  7. Visit the URL that you wanted to capture the traffic from.
  8. Go back to your Wireshark screen and click the fourth button or press Ctrl + E.
  9. After the traffic capture is stopped, please save the captured traffic into a file (in *.pcap format) and attach it to your support ticket.

(info) Wireshark cannot sniff traffic within the same machine (localhost) on Windows. If you would like to sniff local traffic on Windows, try Fiddler.

Windows: Fiddler

  1. Download Fiddler.
  2. Open it.
  3. Clear your browser cache.
  4. Browse to your site. Visit the pages that are problematic and a contrasting non-problematic page if appropriate, for contrast.

    Fiddler can capture local traffic by using the machine's name as the host name rather than 'localhost'.

  5. Click File > Save > All Sessions....
  6. Attach the resulting file for Support.