Alt-Svc moves HTTP authority to a second endpoint

<h1> Alt-Svc moves HTTP authority to a second endpoint </h1> <p>An <code>Alt-Svc</code> response tells a client that another endpoint can serve the same origin. The mechanism is common in HTTP/3 deployments, where a website advertises a QUIC service on another port. It also changes where requests travel. That makes the header, the advertised endpoint, and the client's fallback behavior part of the

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