def send_subscribe(self, dup, topic, qos):
"""Send subscribe COMMAND to server."""
pkt = MqttPkt()
pktlen = 2 + 2 + len(topic) + 1
pkt.command = NC.CMD_SUBSCRIBE | (dup << 3) | (1 << 1)
pkt.remaining_length = pktlen
ret = pkt.alloc()
if ret != NC.ERR_SUCCESS:
return ret
#variable header
mid = self.mid_generate()
pkt.write_uint16(mid)
#payload
pkt.write_string(topic)
pkt.write_byte(qos)
return self.packet_queue(pkt)
def send_subscribe(self, dup, topic, qos):
"""Send subscribe COMMAND to server."""
pkt = MqttPkt()
pktlen = 2 + 2 + len(topic) + 1
pkt.command = NC.CMD_SUBSCRIBE | (dup << 3) | (1 << 1)
pkt.remaining_length = pktlen
ret = pkt.alloc()
if ret != NC.ERR_SUCCESS:
return ret
#variable header
mid = self.mid_generate()
pkt.write_uint16(mid)
#payload
pkt.write_string(topic)
pkt.write_byte(qos)
return self.packet_queue(pkt)
