How to keep a XMPP connection stable on Android with (a)smack?

Question

I use asmack-android-7-beem library for Android. I have a background service running, such as my app stays alive. But sooner or later XMPP connection dies without any notice

Answer 1

I have the same problem, except that My program run on server side JVM.
I used smack 4.0 in the first place. Then I updated to smack 4.1, but the problem still happened. Finally I found a configuration module: PingManager
After using this, the occurrence of this situation was drop down.

    connection = new XMPPTCPConnection(config);     
    PingManager pingManager = PingManager.getInstanceFor(connection);
    pingManager.setPingInterval(300); // seconds