Resolved when TLS is successfully set up on the socket. * * @throws SocketException Promise fails and the socket is closed if setting up TLS fails. */ public function setupTls(?CancellationToken $cancellationToken = null): Promise; /** * @param CancellationToken|null $cancellationToken * * @return Promise Resolved when TLS is successfully shutdown. * * @throws SocketException Promise fails and the socket is closed if shutting down TLS fails. */ public function shutdownTls(?CancellationToken $cancellationToken = null): Promise; /** * @return int One of the TLS_STATE_* constants defined in this interface. */ public function getTlsState(): int; /** * @return TlsInfo|null The TLS (crypto) context info if TLS is enabled on the socket or null otherwise. */ public function getTlsInfo(): ?TlsInfo; }