Traveler server with Red status and long running push threads

We had a customer contact us recently about their Traveler server. The server was reporting a status of Red, CPU on the server was extremely high, and there were a number of these errors in the log file:

Traveler:  User CN=User Name/O=Org on thread Push-1ca3 has been running for 8820 minutes.

One correlation for the users reporting this error, they were all Android users.  No other device types were reporting this error.

In digging a bit deeper, we saw this error for each affected user in the log:

SEVERE  Push-14ad9 User Name[Android_f5a7931af273cbdc] ConnectionNotificationSenderGCM$SendMessageRunnable.run#460 There was an issue sending the notification message to the Google Cloud Messaging (GCM) server. 3 attempts to re-establish the connection have failed, so the notification message cannot be sent. You can test network connectivity including firewall settings by trying https://android.googleapis.com/gcm/send in a web browser on this server. Exception Thrown: java.net.SocketException: Connection reset

Running a trace from the physical server the Traveler server is hosted on revealed an inability to connect to https://android.googleapis.com/gcm/send

Google Cloud Messaging (GCM) became available in Traveler 9.0.1.3.  It is the default synchronization option for Android devices when they download the 9.0.1.3 or later IBM Verse client.

Android_Sync_Options

The fix to this issue is two-fold:

  1. Enable GCM push via notes.ini NTS_PUSH_ENABLE_GCM=True and restart the Traveler server.
  2. Ensure the Traveler server can connect to https://android.googleapis.com/gcm/send

 

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