How can I remove default headers that curl sends
Curl by default adds headers such as Content-type and User-agent. Normally that is a good thing but I'm trying to test what our server does when those headers are missing. My problem is with the content-type header. If it is missing, the server correctly assumes the user sent json. However, curl actually adds the missing header and incorrectly assumes that the content I am posting application/x-www-form-urlencoded. It also sends an Accept header of / . I suppose that is nice default behavior but I basically would like it to not send headers I did not specify. Is there an option for that?
curl -v -X POST 'https://domain.com' -d '{...}'
> User-Agent: curl/7.37.1
> Host: domain.com
> Accept: */*
> Content-Length: 299
> Content-Type: application/x-www-form-urlencoded
Use -H flag with the header you want to remove and no content after the :
-H, --header LINE Custom header to pass to server (H)
Sample
-H 'User-Agent:'
This will make the request without the User-Agent header (instead of sending it with an empty value)
Seems like curl sends 3 headers. To do a request without them you can do:
curl 172.20.11.100:8080/healthz -v -H 'User-Agent:' -H 'Accept:' -H 'Host:'
+1 to @cmlndz answer as he explains how to remove a single header.
You can check which headers are actually sent by adding the -v option as shown above.
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