Fiddler Everywhere main feature is to capture and inspect web traffic through HTTP and HTTPS. Checking the captured traffic allows you to debug your web application while using the Fiddler's Request and Response Inspectors.
Fiddler Everywhere can capture web traffic (for example, from a browser) made via HTTP or HTTPS. The captured traffic is listed as sessions in the Live Traffic.
Follow these steps to capture web traffic:
- Open Fiddler Everywhere and focus the main Live Traffic tab.. Make sure that Live Traffic switch is set to Capturing. To stop capturing the live traffic, switch it back to Paused.
By default, Fiddler Everywhere can capture only non-secure traffic (HTTP). If you want to enable capturing of secure traffic (HTTPS) then follow the steps described in the Settings > HTTPS article.
- With the Live Traffic being set to Capturing, open a browser, enter the HTTP address and make the request. Alternatively, if you are not making the HTTP/HTTPS request through a browser, open the application and make the web request.
For example: Open Google Chrome browser and enter
- Go back to Fiddler Everywhere. In the Live Traffic section, you will notice the live traffic being captured.
Any new outgoing requests and upcoming responses (for example, after navigating deeper into a website or opening new website) will be continuously captured in the Live Traffic panel. Switch back to Paused to stop the live capturing and investigate specific sessions without polluting your Live Traffic. You could also select one or more sessions from the Live Traffic and save and share them or remove them from the list.
Fiddler Everywhere provides functionality to inspect the already captured sessions. The live traffic sessions are composed of HTTP/HTTPS requests and responses. Each HTTP request can be observed through the Request Inspector. Each HTTP response can be observed through the Response Inspector. Both inspectors are powerful tools that can visualize the received content via different I nspector types.
Follow these steps to start inspecting a request & response:
- Open Fiddler Everywhere and capture traffic (as described here)
- Select a session row in the Live Traffic.
- To the right, at the top, is located the Request Inspector. You could choose a different inspector type to visualize the requested content. The default one is Headers.
- To the right, at the bottom, is located the Response Inspector. You could choose a different inspector type to visualize the requested content. The default one is Headers.