remove contenttype header from request

[roydekleijn]

Hi,

For a specific test I need to remove the content-type from the request headers. I think it is not possible at the moment, is it ?

Roy

[luuizeduardo]

I think it is, please see #533

[koooge]

It looks like this is same as #533 , so to consolidate the discussion and efforts, I'm going to close this issue in preference of the previous issue.