public enum ALPNResult : Equatable
The result of an ALPN negotiation.
In a system expecting an ALPN negotiation to occur, a wide range of
possible things can happen. In the best case scenario it is possible for
the server and client to agree on a protocol to speak, in which case this
.negotiated with the relevant protocol provided as the associated
value. However, if for any reason it was not possible to negotiate a
protocol, whether because one peer didn’t support ALPN or because there was no
protocol overlap, we should
fallback to a default choice of some kind.
Exactly what to do when falling back is the responsibility of a specific implementation.
ALPN negotiation succeeded. The associated value is the ALPN token that was negotiated.
ALPN negotiation either failed, or never took place. The application should fall back to a default protocol choice or close the connection.