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Keep-Alive

Keep-alive flow:

Server                       Client
  │── Ping (3928) ────────────>│
  │                            │
  │<─ Pong (2596) ─────────────│
  │                            │
  │── connection terminated ──>│  if server does not receive Pong (2596) within 30s

S→C 3928 - Ping​

Keepalive ping from server. Client must reply with Pong (295) to maintain the connection.

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C→S 2596 - Pong​

Nitro: CLIENT_PONG - Nitro adds CLIENT_ prefix.

The server sends Ping (3928) once during login and expects Pong (295) in response. The server also uses an idle timeout, after which the connection is terminated.

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