Content-Length on GET request

[jarrodek]

When switching from POST to GET requests the app does not filters headers list for payload specific values (Content-Type, Content-Length, other Content-* headers). This causes timeout error as the server is waiting for the data from the client but none arrives as the transport library clears payload for GET, HEAD.

Expected Behavior

1. The app clears content-* headers when switching from POST to GET
2. The app warns the user about potentially unwanted headers

I would suggest option 2 as altering request data on behalf of the user should not be practiced. It would help unexperienced users but would eliminate some test scenarios for advanced users.

Actual behavior
The server waits for the data from the client until timeout and the client closes the connection with 0 status code.

To Reproduce

1. Create a GET request
2. Add Content-Type header
3. Add Content-Length header
4. Run the request. Eventually it renders timeout error.