Helix Protocol for MQTT is not designed to handle repeat messages due to QoS=1

[pmasrani]

Helix Protocol fails with an error as below, if the hello message is repeated:
HelixProtocolException: HelixProtocolError(u'Unexpected Message hello during HandshakeAwaitingState',)

Helix Protocol needs to be re-designed to accept repeat messages, which will happen due to QoS=1 in MQTT.

[KohliDev]

HelixProtocol is in general used both for Websockets and MQTT. The decision has to be made on dropping WebSockets if the plan is to change the HelixProtocol specific for MQTT use case.