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Sorry , attachment is my config file , I open two window , Window I pub ,Window II sub messages. in Window I , I published M1??M2 ,and Window II receive it . then restart mosquitto. Window II receive nothing at all. Window I: E:\mosquitto>mosquitto_pub -t dsms/110/test -h 192.168.100.79 -q 2 -m M1 E:\mosquitto>mosquitto_pub -t dsms/110/test -h 192.168.100.79 -q 2 -m M2 E:\mosquitto>mosquitto_pub -t dsms/110/test -h 192.168.100.79 -q 2 -m M3 E:\mosquitto>mosquitto_pub -t dsms/110/test -h 192.168.100.79 -q 2 -m M3 E:\mosquitto>mosquitto_pub -t dsms/110/test -h 192.168.100.79 -q 2 -m M3 Window II: E:\mosquitto>mosquitto_sub -t dsms/# -q 2 -c -i testclient M1 M2 ------------------ ???????? ------------------ ??????: "Karl P";<karlp@xxxxxxxxxxxx>; ????????: 2013??12??13??(??????) ????10:34 ??????: "mosquitto-users"<mosquitto-users@xxxxxxxxxxxxxxxxxxx>; ????: Re: [Mosquitto-users]?????? ?????? I met a strange question If possible can you provide: a) the config file for the broker b) complete commands, _in order_. If you have two windows open, one for the pubsliher and one for the subscriber, and one of restarting the broker, please include _all_ commands, _in order_ It's extremely difficult to understand what you're doing with the descriptions you're using. Sincerely, Karl Palsson On 12/13/2013 02:03 AM, ??(Grey)?? wrote: > Thanks roger for your patient answer . I did many tests about this question. > below is latest test : > 1> setup mosquitto-1.2-install-cygwin.exe ,than modify "persistence > true"??"persistence_file mosquitto.db"??"persistence_location e:\mosquitto > \"??"port 55003" in mosquitto.conf ONLY. > 2> use mosquitto_pub command to publish a test message. In the same time , use > mosquitto_sub command to > subscribe message . mosquitto_sub start with '-c' param to receive durable subscribe > 3> pub a message , then sub command will receive it , everything is ok. > 4> restart mosquitto service . then pub some test messages > 5> mosquitto_sub receive nothing. restart mosquitto_sub ,then pub messages > again , also receive nothing > All in all, If i set cleansession=false in mqtt client , receive some message > then restart mosquitto broker. mqtt client will not receive message at all , The > only way i known to make mqtt client normal is delete persistent file then > restart mosquitto service. > -----------------------------------------------------------------wrote by roger > This doesn't seem to be related to Francois' problem, so I presume you > meant to reply in the "I met a strange question" thread. > > I'm afraid it's still very difficult to know exactly what problem you > are having. Please post exactly the steps you go through and exactly > what you expect to happen. Don't miss any steps out and don't omit any > configuration options - you say you have those three options in use, > but then connect to a non-standard port. Either you missed a > configuration option or you are connecting to a different broker than > you think. > > If you are saying that you expect the mosquitto_sub client to receive > the test11 message, but that you have deleted the persistence file > before restarting mosquitto, then this is expected behaviour. If you > delete the persistence file then you have deleted the information that > mosquitto would use to know which clients should have messages stored. > In effect, this is the first time that the client "112" has connected > to the broker. > > Regards, > > Roger > > > ------------------ ???????? ------------------ > *??????:* "Karl Palsson";<karlp@xxxxxxxxxxxx>; > *????????:* 2013??12??11??(??????) ????10:00 > *??????:* "mosquitto-users"<mosquitto-users@xxxxxxxxxxxxxxxxxxx>; > *????:* Re: [Mosquitto-users] ?????? I met a strange question > > > If you could share your paho code, people might know more, it's very hard to > understand what you're doing I'm > sorry. > > What I _think_ is happening, is that while you are publishing with qos2, you > might not have > clean_session=False, or you might not have stable/persistent client ids. In > that case, paho might reconnect, > but it won't resubscribe. (If paho even reconnects) > > > On Wed, Dec 11, 2013 at 10:10:49AM +0800, ??(Grey)?? wrote: > > thanks . even though i pub a new message , my paho client also can't sub any > messages , so i think this problem has nothing with retained flag. > > > > > > > > > > ------------------ Original ------------------ > > From: "Jan-Piet Mens";<jpmens@xxxxxxxxx>; > > Date: Tue, Dec 10, 2013 07:40 PM > > To: "mosquitto-users"<mosquitto-users@xxxxxxxxxxxxxxxxxxx>; > > > > Subject: Re: [Mosquitto-users] ?????? I met a strange question > > > > > > > > Hello, > > > > > 1.delete mosquitto.db then restart mosquitto > > > 2. pub a qos 2 message without sub > > > 3. restart subscriber and cannot receive message any more. > > > > If you intend to be able to get messages previously published to the > > broker (i.e. retained *by* the broker), you have to set the `retain' > > flag on messages as you publish them. With the command-line tools, you'd > > do something like this: > > > > mosquitto_pub -t topic -m payload -r > > > > A subsequent SUB on that topic (provided ACLs allow you to do so) will > > read that last retained message for that particular topic. > > > > -JP > > > > -- > > Mailing list: https://launchpad.net/~mosquitto-users > > Post to : mosquitto-users@xxxxxxxxxxxxxxxxxxx > > Unsubscribe : https://launchpad.net/~mosquitto-users > > More help : https://help.launchpad.net/ListHelp > > . > > > -- > > Mailing list: https://launchpad.net/~mosquitto-users > > Post to : mosquitto-users@xxxxxxxxxxxxxxxxxxx > > Unsubscribe : https://launchpad.net/~mosquitto-users > > More help : https://help.launchpad.net/ListHelp > > > -- > Mailing list: https://launchpad.net/~mosquitto-users > Post to : mosquitto-users@xxxxxxxxxxxxxxxxxxx > Unsubscribe : https://launchpad.net/~mosquitto-users > More help : https://help.launchpad.net/ListHelp > > -- Mailing list: https://launchpad.net/~mosquitto-users Post to : mosquitto-users@xxxxxxxxxxxxxxxxxxx Unsubscribe : https://launchpad.net/~mosquitto-users More help : https://help.launchpad.net/ListHelp
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mosquitto.conf
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windowI&windowII.jpg
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