MonkeysLegion HTTP

High-performance PSR-7/PSR-15/PSR-17 HTTP message implementations, middleware stack, and SAPI emitter for the MonkeysLegion framework. Zero external dependencies beyond PSR interfaces.

Installation

composer require monkeyscloud/monkeyslegion-http

Features

Feature	Description
PSR-7 Messages	Immutable ServerRequest, Response, JsonResponse, Stream, Uri
PSR-15 Middleware	14 production-ready middleware components
PSR-17 Factories	HttpFactory for all message types
SAPI Emitter	Chunked streaming response emitter
Error Handler	OOM-safe error handler with PSR-3 logging
Content Negotiation	Accept header parsing and payload selection
Helper Functions	response(), json(), redirect(), html()
PHP 8.4 Native	final classes, readonly properties, match expressions

Quick Start

use MonkeysLegion\Http\Message\ServerRequest;
use MonkeysLegion\Http\Message\JsonResponse;
use MonkeysLegion\Http\Emitter\SapiEmitter;

// Build request from PHP superglobals
$request = ServerRequest::fromGlobals();

// Convenience accessors
$email = $request->input('user.email');      // Dot-notation body access
$token = $request->bearerToken();            // Authorization: Bearer ...
$ip    = $request->ip();                     // Client IP
$agent = $request->userAgent();              // User-Agent header
$hash  = $request->fingerprint();            // SHA-256 request fingerprint

// Inspection helpers
$request->isJson();     // Expects JSON?
$request->isSecure();   // HTTPS?
$request->isAjax();     // XMLHttpRequest?
$request->isMethod('POST');

// Create responses
$response = new JsonResponse(['status' => 'ok'], 200);

// Emit to client
(new SapiEmitter())->emit($response);

ServerRequest Convenience API

// Dot-notation input access
$email = $request->input('user.email', 'default@example.com');

// Get all parsed body fields
$all = $request->all();

// Get only specific fields
$credentials = $request->only(['email', 'password']);

// Bearer token extraction
$jwt = $request->bearerToken();

// Request fingerprint for dedup/caching
$fingerprint = $request->fingerprint(); // SHA-256 of method|path|query|body

JsonResponse

use MonkeysLegion\Http\Message\JsonResponse;

// Simple JSON response
$response = new JsonResponse(['users' => $users]);

// With status code
$response = new JsonResponse(['error' => 'Not Found'], 404);

// Envelope format: { status, data, meta, message }
$response = (new JsonResponse($data))
    ->withEnvelope(message: 'Success');

// With pagination metadata
$response = (new JsonResponse($items))
    ->withPagination(page: 1, perPage: 25, total: 100);

Middleware Stack

Available Middleware

Middleware	Purpose
AuthMiddleware	Bearer token authentication with JWT support
CorsMiddleware	Full CORS preflight handling
CsrfMiddleware	CSRF token verification
RateLimitMiddleware	Sliding-window rate limiting with PSR-16 cache
SecurityHeadersMiddleware	Security headers (strict/relaxed/api presets)
ETagMiddleware	Conditional GET with ETag/If-None-Match
IpFilterMiddleware	IP whitelist/blacklist filtering
RequestIdMiddleware	UUID request correlation ID
RequestSizeLimitMiddleware	Request body size enforcement
TimingMiddleware	X-Response-Time header
LoggingMiddleware	PSR-3 request/response logging
TrustedProxyMiddleware	X-Forwarded-* header handling
ContentNegotiationMiddleware	Accept header content negotiation
ErrorHandlerMiddleware	Exception → HTTP response conversion

Middleware Dispatcher

O(1) cursor-based dispatcher — no array_shift overhead:

use MonkeysLegion\Http\MiddlewareDispatcher;
use MonkeysLegion\Http\CoreRequestHandler;

$dispatcher = new MiddlewareDispatcher(
    middlewareStack: [
        new RequestIdMiddleware(),
        new SecurityHeadersMiddleware('strict'),
        new CorsMiddleware(
            allowedOrigins: ['https://example.com'],
            allowedMethods: ['GET', 'POST', 'PUT', 'DELETE'],
        ),
        new RateLimitMiddleware(maxRequests: 100, windowSeconds: 60),
        new AuthMiddleware(requiredToken: 'my-api-key'),
    ],
    finalHandler: new CoreRequestHandler($router),
);

$response = $dispatcher->handle($request);

CORS Middleware

use MonkeysLegion\Http\Middleware\CorsMiddleware;

$cors = new CorsMiddleware(
    allowedOrigins:  ['https://app.example.com'],
    allowedMethods:  ['GET', 'POST', 'PUT', 'DELETE', 'OPTIONS'],
    allowedHeaders:  ['Content-Type', 'Authorization', 'X-Request-ID'],
    exposedHeaders:  ['X-Request-ID', 'X-Response-Time'],
    maxAge:          3600,
    allowCredentials: true,
);

Rate Limiter

use MonkeysLegion\Http\Middleware\RateLimitMiddleware;

$limiter = new RateLimitMiddleware(
    maxRequests:   100,        // Requests per window
    windowSeconds: 60,         // 1-minute window
    cache:         $psr16Cache, // Optional PSR-16 cache (falls back to in-memory)
);

// Per-route override via request attribute:
// $request = $request->withAttribute('rate_limit', 10);

Security Headers

use MonkeysLegion\Http\Middleware\SecurityHeadersMiddleware;

// Three built-in presets
$strict  = new SecurityHeadersMiddleware('strict');   // Production APIs
$relaxed = new SecurityHeadersMiddleware('relaxed');  // Development
$api     = new SecurityHeadersMiddleware('api');      // API-optimized

// Custom overrides
$custom = new SecurityHeadersMiddleware('strict', [
    'Content-Security-Policy' => "default-src 'self'",
]);

Auth Middleware

use MonkeysLegion\Http\Middleware\AuthMiddleware;

$auth = new AuthMiddleware(
    requiredToken: 'my-secret-token',
    publicPaths:   ['/health', '/login', '/register'],
    jwtDecoder:    fn(string $token) => JWT::decode($token, $key), // Optional
);

Error Handler

Global error handler with OOM protection, recursive-exception guards, and PSR-3 logging:

use MonkeysLegion\Core\Error\ErrorHandler;
use MonkeysLegion\Core\Error\Renderer\ErrorRendererInterface;
use MonkeysLegion\Http\Error\Renderer\JsonErrorRenderer;
use MonkeysLegion\Core\Error\Renderer\HtmlErrorRenderer;

$handler = new ErrorHandler();
$handler->useRenderer(new JsonErrorRenderer());
$handler->useLogger($psrLogger);
$handler->register();

// Custom renderer example:
final class CustomErrorRenderer implements ErrorRendererInterface {
    public function render(\Throwable $exception, bool $debug = false): string {
        return 'Custom error output';
    }

    public function getContentType(): string {
        return 'text/plain';
    }
}

$handler->useRenderer(new CustomErrorRenderer());

Error Renderers

Renderer	Output
JsonErrorRenderer	Structured JSON error response
HtmlErrorRenderer	Styled HTML error page

Legacy HTTP namespace aliases are deprecated for these two types:

• MonkeysLegion\Http\Error\Renderer\ErrorRendererInterface
• MonkeysLegion\Http\Error\Renderer\PlainTextErrorRenderer

Use Core namespace instead:

• MonkeysLegion\Core\Error\Renderer\ErrorRendererInterface
• MonkeysLegion\Core\Error\Renderer\PlainTextErrorRenderer

PSR-17 Factory

use MonkeysLegion\Http\Factory\HttpFactory;

$factory = new HttpFactory();

$response = $factory->createResponse(200, 'OK');
$stream   = $factory->createStream('Hello');
$uri      = $factory->createUri('https://example.com/api');
$request  = $factory->createServerRequest('GET', $uri);

SAPI Emitter

use MonkeysLegion\Http\Emitter\SapiEmitter;

$emitter = new SapiEmitter(chunkSize: 8192);
$emitter->emit($response);

Features:

• Auto-injects Content-Length when body size is known
• Guards against headers_sent() — throws instead of silent corruption
• Configurable chunk size for streaming large responses

Helper Functions

// Plain text response
$r = response('Hello World', 200, ['X-Custom' => 'value']);

// JSON response
$r = json(['status' => 'ok']);

// Redirect response
$r = redirect('/dashboard', 302);

// HTML response
$r = html('<h1>Hello</h1>');

Requirements

• PHP 8.4+
• psr/http-message ^2.0
• psr/http-server-middleware ^1.0
• psr/http-server-handler ^1.0
• psr/http-factory ^1.1

Optional

• psr/simple-cache ^3.0 — For RateLimitMiddleware persistent storage
• psr/log ^3.0 — For ErrorHandler and LoggingMiddleware

License

MIT