What is the default behaviour of a controller action not marked with AcceptVerbs, HttpGet or HttpPost?

Question

If I create a controller action and do not decorate it with AcceptVerbs, HttpPost or HttpGet. What is the default behaviour?

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Answer 1

In Web API 2.1:

it depends on the name of the action. If the action starts with "Get*" then it will default to only accept GET requests. If it starts with "Put*" then it will default to only accept PUT requests. Same with POST.

If it doesn't start with any known verb then it will default to only accept POST.

Here are the results of my testing:

public class BlahController : ApiController
{
    // only allows GET
    public string GetSomething() { return "GetSomething blah"; }

    // only allows PUT
    public string PutSomething() { return "PutSomething blah"; }

    // only allows POST
    public string PostSomething() { return "PostSomething blah"; }

    // only allows POST
    public string Fleabag() { return "Fleabag blah"; }
}

Answer 2

It's accessible via any verb.