Support for OPTIONS & HEAD?

[LouisStAmour]

• OPTIONS is required for CORS Preflight: https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/OPTIONS
• HEAD is very useful for (custom) clients who want to check for the existence of a file without actually downloading it, e.g. link/image validation https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/HEAD

[aofei]

I need to explain why I abandoned HEAD and OPTIONS.

In fact, I don't really want to abandon them, but want to merge them into GET. Why? Because HEAD and OPTIONS are just the same as GET to get some information from the server.

• HEAD: The thin version of GET (without body).
• OPTIONS: The variant version of GET (fixed head and without body).

My current solution is to add a custom HTTP request header to achieve the goal. Like Without-Body: true used to tell the server to discard the response body. But I didn't finalize the solution. So welcome everyone to put forward their own views.