HTTP Semantics

Beyond response shortcuts and header helpers, this package exposes two enums that help keep HTTP decisions readable:

RequestMethod for request method behavior;
StatusCode for status code values and categories.

RequestMethod

RequestMethod models common HTTP methods and adds three semantic helpers:

isSafe()
isIdempotent()
isCacheable()

These helpers are useful when your application logic depends on HTTP semantics rather than raw strings.

use FastForward\Http\Message\RequestMethod;

if (RequestMethod::Delete->isIdempotent()) {
    // Safe to reason about repeated DELETE attempts in an idempotent way.
}

Method	Safe	Idempotent	Cacheable
`GET`	Yes	Yes	Yes
`HEAD`	Yes	Yes	Yes
`POST`	No	No	No
`PUT`	No	Yes	No
`DELETE`	No	Yes	No

StatusCode

StatusCode is a typed enum for HTTP status codes. It provides:

the integer code through value or getCode() ;
a readable reason phrase through getReasonPhrase() ;
category helpers such as isSuccess() and isError() ;
category names through getCategory() .

use FastForward\Http\Message\StatusCode;

$status = StatusCode::Created;

echo $status->getCode();         // 201
echo $status->getReasonPhrase(); // Created
echo $status->getCategory();     // Success

if ($status->isSuccess()) {
    // Continue with the happy path.
}

When to Use These Enums

Use them when you want:

application logic that reads more clearly than raw strings or integers;
fewer "magic values" in controllers, middleware, or responders;
a central place for HTTP method and status code meaning.