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/Dart 2

selectedProtocol property

String selectedProtocol

The protocol which was selected during ALPN protocol negotiation.

Returns null if one of the peers does not have support for ALPN, did not specify a list of supported ALPN protocols or there was no common protocol between client and server.

Implementation

String get selectedProtocol;

© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/2.0.0/dart-io/SecureSocket/selectedProtocol.html