3 mqttClent (c1,c2,c3,c4,c5);mqttclent setClindId,cleansession=false; activemq 5.12.0 (or befor) test topic(T)
1 c1,c2,c3 subscribe T 2 c5 send message m1 to T 3 c1,c2,c3 received m1 .......sometimes (problem occurs) 4 c1 unsubscribe T 5 c5 send message m2 to T (b c received m2) 6 c1 subscribe T 7 c1 received m2 8 c1 unsubscribe T 9 c1 subscribe T 10 c1 received m2 : : if(this problem occurs) { 11 d subscribe T 12 d received m2 //i don't know why } at last 13 b ,c ,d unsubscribe T 14 a unsubscribe T 15 a subscribe T 16 the result change good a din't received m2 -- View this message in context: http://activemq.2283324.n4.nabble.com/a-problem-about-mqtt-and-activemq-tp4703831p4703895.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.