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Posted to dev@qpid.apache.org by "Robbie Gemmell (JIRA)" <ji...@apache.org> on 2015/10/30 16:43:27 UTC

[jira] [Created] (QPIDJMS-136) use System.nanoTime() when deriving time to tick the transport with for idle-timeout handling

Robbie Gemmell created QPIDJMS-136:
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             Summary: use System.nanoTime() when deriving time to tick the transport with for idle-timeout handling
                 Key: QPIDJMS-136
                 URL: https://issues.apache.org/jira/browse/QPIDJMS-136
             Project: Qpid JMS
          Issue Type: Bug
          Components: qpid-jms-client
    Affects Versions: 0.6.0
            Reporter: Robbie Gemmell
            Assignee: Robbie Gemmell
             Fix For: 0.7.0


The sending of empty AMQP heartbeating frames to satisfy the remote peers advertised idle-timeout, and closure of the connection if no frames are received from a peer to satisfy our local idle-timeout, are handled by protons Transport#tick() method. This method takes the current time as an argument and determines what (if any) actions should be undertaken now, then returns the next point at which further processing is required. In order to faciliate this the last 'current time' the method was called with is saved between calls. 

As with QPID-6698, we should update our usage of the proton Transport#tick() method to use a monotonic time, derived from System.nanoTime(), rather than a wall time from System.currentTimeMillis(), so that clock changes between these points dont lead to incorrect behaviour (e.g not sending a required frame, or thinking a frame hasnt been received that should have been).



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