The fix @
AMQ-2088 cause a the Inactivity Monitor to regress.
Now when a socket is waiting to read the next message, or is in the middle of receiving the next message it sets a flag that disable the inactivity monitor from timing out the connection. The problem is that if the connection gets hung, then it won't time out since the flag is set.
I think a better approach would be for the wireformat to expose a counter which is incremented as data is read.
That way between inactivity check intervals the inactivity monitor can check to see if that value has changed since it's last check.