Am 31.12.13 01:24, schrieb Chris Angelico:
Does Buildbot retain a constant TCP socket to its server?
In short: yes. A little bit longer: It uses the Twisted PerspectiveBroker protocol. That has nearly-transparent reconnects (but as your case shows, not fully transparent), and does regular ping messages to keep the connection alive.
So it should be able to handle a failover from one link to the other, but it's certainly better to bind it to the more reliable transport. I believe you can somehow configure the frequency of ping messages so that you network doesn't believe the connection goes idle, plus it will attempt a reconnect if the network did indeed cancel the connection.
If you wanted to study this further, you could look into the slave's twisted log file.