407
SIP
407 Proxy Authentication Required
The client must first authenticate with the proxy. The proxy returns a Proxy-Authenticate header with a challenge.
Cuándo verás este código
When a SIP proxy requires authentication before forwarding the request. Similar to 401 but for proxy servers.
Cómo solucionarlo
Resend the request with a Proxy-Authorization header containing valid credentials for the proxy.
Especificación
Códigos relacionados
Comparaciones
Comparar con
Guías
401 Unauthorized vs 403 Forbidden: When to Use Each
Security & Authentication
SIP Response Codes: Understanding VoIP Call Flow
Real-Time Protocols
SIP Call Flow: Understanding Session Setup
Real-Time Protocols
WebRTC Signaling with SIP and WebSocket
Real-Time Protocols
RFC 3261: SIP Protocol Deep Dive
Protocol Deep Dives
TLS 1.3: Faster, Simpler, More Secure
Protocol Deep Dives
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Request Method (HTTP Verb)
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Authentication
TCP/IP
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TLS Versions