- Add HTTPMiddleware() method for standard net/http handlers - Add GetRealIP() helper to extract client IP from context - Update r.RemoteAddr with real IP and port 0 (proxy port invalid) - Support both IPv4 and IPv6 Fastly IP range validation - Maintain backward compatibility with existing Echo support The middleware extracts real client IPs from X-Forwarded-For headers when requests come from trusted Fastly proxy ranges.