Thoth::Http::MethodConcept Concept Reference

The HTTP methods requirements following RFC9110. More...

#include <MethodConcept.hpp>

Concept definition

template<class T>
concept Thoth::Http::MethodConcept =  requires(T t, string_view body, Url url, Headers headers, StatusCodeEnum statusCode) {
        requires requires { { T::MethodName() } -> std::same_as<string_view>; };
 
        { T::IsSafe()       } -> std::same_as<bool>;
        { T::IsIdempotent() } -> std::same_as<bool>;
 
        { T::ValidateRequest(body, url, headers)   } -> std::same_as<WebResultOper>;
        { T::ValidateResponse(statusCode, body, url, headers)  } -> std::same_as<WebResultOper>;
    }

Detailed Description

The HTTP methods requirements following RFC9110.

Canonical methods of HTTP just compare if a request is well-formed with body, but some methods (like "Lock-Token" for LOCK / UNLOCK in WebDAV or RPC's "Content-Type: application/rpc") also needs to validate the headers, so I decided to leave it more generic so a class that satisfies MethodConcept have all the info available to do it validation.