Reverse Proxy Middleware Example

Demonstrates middleware.reverseProxy() and middleware.reverseProxyRuntime() for proxying requests to a backend server. Shows both compile-time target configuration and runtime target selection.

Demo Program

// Start a backend server
try backend.get("/api/data", backendHandler);

// Proxy with runtime target URL
try proxy.use(httpx.reverseProxyRuntime(backend_url));

// Test the proxy
var resp = try client.get(proxy_url, .{});
// GET /api/data -> proxied to backend

Run

zig build example-reverse-proxy-middleware

Checklist

• [x] Backend server starts and handles /api/data
• [x] Proxy forwards requests to backend transparently
• [x] reverseProxyRuntime() accepts target URL at runtime
• [x] Response body is proxied unchanged
• [x] Status code is forwarded correctly
• [x] Use cases: API gateway, microservice proxy, load balancer