Driver pinger may break in configuration with multiple interfaces
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Key: SEQUOIA-918
URL: https://forge.continuent.org/jira/browse/SEQUOIA-918
Project: Sequoia
Type: Bug
Components: JDBC Driver
Versions: Sequoia 3.0 beta3, Sequoia 2.10.6, Sequoia 2.10.5, Sequoia
2.10.4, Sequoia 2.10.3
Reporter: Marc Herbert
The driver pinger currently identifies answering controllers by looking at the
source address of the pong answer packet. If the controller has multiple
network interfaces, it may return the "Pong" packet using an address unknown to
the driver, breaking the ping scheme.
One fix would be to use UDP on _connected_ sockets. But connected sockets is
probably overkill and a resource waste.
This seems to be a simpler fix: the driver sends a controller ID to the
controller, and the controller just returns it. (this controller ID can be
private to the driver)
It should be possible to implement this in a backward compatible way.
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