A Future that completes with value that S.connect() would return unless cancel is called on this ConnectionTask.
If cancel is called, the Future completes with a SocketException error whose message indicates that the connection attempt was cancelled.
final Future<S> socket
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dart.dev/stable/2.5.0/dart-io/ConnectionTask/socket.html