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The system polls TCP connections every 2 minutes for the auto on/off keepalives. For some carriers, the NAT-T keepalive delay is lower than this, which means it's possible a TCP connection is opened seconds after the poll. This may cause connections being disconnected because keepalive timed-out. The minimal acceptable value should be the same as the keepalive delay. But the system may take time to restart keepalive. Adjust the delay of the polling alarm to be lower than the keepalive delay to preserve some time for the system to restart the keepalive. Bug: 273411114 Test: atest FrameworksNetTests Change-Id: I28f71ceb7b72d83e6e0f8f7d22d3d1e9dbdaa467 |
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| .. | ||
| android | ||
| com/android | ||