Thanks for your reply, Tim.
The broker is Apollo 1.7.1, and the client is based on Eclipse Paho 1.0.2, with protocol MQTT v3.1. When I connect the same client to ActiveMQ, it is correct, a QoS 1 message received. When searching for answer, I found the unfixed issue: ActiveMQ Apollo MQTT QoS always downgraded to 0 (https://issues.apache.org/jira/browse/APLO-353)... Best regards, Sun Yu ------------------ Original ------------------ From: "Tim Bain"<tb...@alumni.duke.edu>; Date: Thu, May 24, 2018 09:06 PM To: "ActiveMQ Users"<users@activemq.apache.org>; Subject: Re: Message received are always at QoS 0 What version of ActiveMQ are you using? What transport protocol are you using? Can you share your code that publishes the message? Tim On Thu, May 24, 2018, 6:50 AM 孙煜 <su...@xcharge.com> wrote: > ------------------ Original ------------------ > From: "孙煜"<su...@xcharge.com>; > Date: Thu, May 24, 2018 08:45 PM > To: "users"<users@activemq.apache.org>; > > Subject: Message received are always at QoS 0 > > > Hi, > > > The message published with QoS 1, and the topic subscribed with QoS 1 too, > but the message received are always at QoS 0. How can I make it to QoS 1 ? > Thanks a lot ! > > > Best regards, > Sun Yu