mqtt subscribe packet MUST set qos to 1 for the fixed header - #327
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Hey @tisba thanks for pointing out the other issue. Yes, it's an exact duplicate. |
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Hi, I discovered this while testing with VerneMQ. According to the MQTT spec, bits 3,2,1 and 0 of the fixed header of the SUBSCRIBE Control Packet are reserved and MUST be set to 0,0,1 and 0 respectively. Tsung sets these to 0,0,0,0 which causes VerneMQ to drop the connection.
https://docs.solace.com/MQTT-311-Prtl-Conformance-Spec/MQTT%20Control%20Packets.htm#_Toc430864927