1 send Hello sendEvent 04 00 00 08 00 00 00 01 2 wait for Hello_21 waitForMessageEvent 04 00 00 10 00 00 00 15 00 01 00 08 00 00 00 12 3 wait for features request waitForMessageEvent 04 05 00 08 00 00 00 02 4 features reply sendEvent 04 06 00 20 00 00 00 02 00 01 02 03 04 05 06 07 00 01 02 03 01 00 00 00 00 01 02 03 00 01 02 03 5 wait for barrier waitForMessageEvent 04 14 00 08 00 00 00 00 6 barrier reply sendEvent 04 15 00 08 00 00 00 04