int gnutls_alpn_get_selected_protocol(gnutls_session_t session, gnutls_datum_t * protocol);
- gnutls_session_t session
is a gnutls_session_t type.
- gnutls_datum_t * protocol
will hold the protocol name
This function allows you to get the negotiated protocol name. The returned protocol should be treated as opaque, constant value and only valid during the session life.
The selected protocol is the first supported by the list sent by the client.
On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a negative error code is returned.
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