Content-Type header is overwritten.

[MrThreepwood]

It makes sense to set this for the user if they haven't provided it, but the fact that someone has provided data as a string does not make the content type text/plain. I was attempting to use this library to test some Graphql endpoints and unfortunately can't do it because of this.

[felipehjcosta]

It worked in the latest version for me!

[MrThreepwood]

I believe we've switched over to okhttp internally, feel free to close this if it's not an issue.

[Zemke]

Is it that what you're doing?

val graphql = "{\"query\":\"query { viewer { login } }\",\"variables\":{}}"
post("http://localhost:8080", data = graphql, headers = mapOf("Content-Type" to "application/json"))