canDial method
Returns true if this transport can dial the given multiaddress
Implementation
@override
bool canDial(MultiAddr addr) {
// Check if the address has either ip4 or ip6 and tcp protocols
final hasIP = addr.hasProtocol('ip4') || addr.hasProtocol('ip6');
final hasTCP = addr.hasProtocol('tcp');
return hasIP && hasTCP;
}