The Composer tab enables you to manually build and send HTTP, HTTPS, and FTP requests.
The Composer contains three major sections that are used to construct a request and observe the response.
- The top section contains a drop-down for selecting HTTP Methods, an URL field, a drop-down to select the used HTTP version, and an Execute button.
- The mid-section is a request composer that provides options to further modify your request via Headers, Body, Params, or Raw views.
- The bottom section is a response inspector, which shows the response from the executed request.
The Composer supports creating a request while using one of the following HTTP methods:
The URL field is the place to endpoint URL for the composed request.
From the HTTP Version drop-down, you can select the following HTTP versions: 1. HTTP 2.0 2. HTTP 1.2 3. HTTP 1.1 4. HTTP 1.0 5. HTTP 0.9
The Request Composer is allowing you to further modify your request by adding your custom Headers, Params, Body and observing the composed request via the Raw view.
Enables you to add/modify your request headers (e.g., like
- Add a new header by entering the header key-value pair and then clicking the tick.
- The new header is added to your request. The header can now be disabled/enabled or completely deleted.
Most of the servers using newer versions of TLS will require a User-Agent header to be set. By default, Fiddler Everywhere will a User-Agent key set with value Fiddler Everywhere and description Lets servers and network peers identify the application, operating system, vendor, and version of the requesting user agent. The header is non-mandatory, but keep in mind that without valid User-Agent some requests to secure servers might fail.
Enables you to add query parameters to your request URL easily. Any key-value pair added through the Params view will be automatically added to the request URL.
- Add new query params by entering the params key-value pair and then clicking the tick.
- The new query params are added to your request URL. The params can now be disabled/enabled or completely deleted.
Enables you to manually specify the data that should be sent with the request.
The view is a raw representation of the composed request. This view is non-editable.
With the Response Inspector, you can inspect the received response (from the executed request). The inspector provides several views to visualize different parts of the request in specific formats. Find detailed information on each inspector type in the dedicated article about Inspector Types