<?php declare(strict_types=1); namespace Buzz\Middleware; use Psr\Http\Message\RequestInterface; use Psr\Http\Message\ResponseInterface; class ContentLengthMiddleware implements MiddlewareInterface { public function handleRequest(RequestInterface $request, callable $next) { $body = $request->getBody(); if (!$request->hasHeader('Content-Length')) { $request = $request->withAddedHeader('Content-Length', (string) $body->getSize()); } return $next($request); } public function handleResponse(RequestInterface $request, ResponseInterface $response, callable $next) { return $next($request, $response); } }