c transform idea

after.c

void 34kt4j(http_request *req, http_response *res) {
  // ...
}

http_create_server(34kt4j);

before.c

http_create_server(void(http_request *req, http_response *res) {
  // ...
});

// or

http_create_server(void function(http_request *req, http_response *res) {
  // ...
});

// or

http_create_server(void onRequest(http_request *req, http_response *res) {
  // ...
});