Hi Stefano, > I know I'm missing something. I'm trying to use the "no clean session" > feature:
> On one terminal: > > stefanoco@stefanocopc:~$ mosquitto_sub -c -i "6748" -v -t "diag/#" ... > stefanoco@stefanocopc:~$ mosquitto_pub -i "7748" -q 1 -t "diag/par01" -m ... > Everything ok. Now, having used the "-c" flag in sub, I expect that if I > kill mosquitto_sub, then publish more messages with above lines, and the > launch again mosquitto_sub I get the messages in queue. I'm getting > nothing... is there anything I should look after in mosquitto.conf? The problem here is that you're not subscribing with QoS>0. The spec says that only messages with QoS>1 should be queued. Your messages are being published with QoS=1 so you have half of it solved, you just need to subscribe at QoS=1 as well. The next version of mosquitto offers the ability to have messages with QoS=0 queued as well, but as this is a feature beyond the spec it isn't enabled by default and probably shouldn't be relied upon. > By the way: using the same id for pub/sub causes sub to exit suddenly (I > know I shouldn't but this is not an intended behaviour I guess?) The client id is unique across the broker so if a client with a duplicate id connects the oldest client is disconnected. This allows a client who has lost their connection to reclaim their id for example. The unique client id is required for the clean session to work. Cheers, Roger -- Mailing list: https://launchpad.net/~mosquitto-users Post to : mosquitto-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~mosquitto-users More help : https://help.launchpad.net/ListHelp
