private State _state = State.AWAITING_A;
public ProtocolHeaderHandler(final ConnectionEndpoint connection)
{
_connection = connection;
_protocolHandlers[0] = new AMQPProtocolHeaderHandler(connection);
_protocolHandlers[1] = null ; // historic apache.qpid.amqp_1_0
_protocolHandlers[2] = null ; // TLS
_protocolHandlers[3] = new SASLProtocolHeaderHandler(connection); // SASL