Header parameters: “Accept” and “Content-type” in a REST context

Question

I understand that the Accept parameter define a data type expected in a client response sent from the server, so it\'s used as a response header.

My que

Answer 1

Read the relevant RFCs. In this case 7231:

5.3.2. Accept

The "Accept" header field can be used by user agents to specify response media types that are acceptable.

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3.1.1.5. Content-Type

The "Content-Type" header field indicates the media type of the associated representation

So: Accept indicates what kind of response from the server the client can accept. Content-type always is about the content of the current request or response.

So if your request has no payload, you don't use a content-type request header.