Content-Type header. Use this when the service you are calling needs to know the format of the data you send and you would rather not set the header by hand. There is nothing to configure: once the plugin is added to the connection, it detects the type of every outgoing request and sets the header automatically.
Add content type headers to requests
Automatic content type detection and add it to the request headers.
Looks at the body of each request, works out what kind of content it is (such as JSON or XML), and adds a matching