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4.9.1 Mater-slave TCP keepalive

By default, the buildmaster sends a simple, non-blocking message to each slave every hour. These keepalives ensure that traffic is flowing over the underlying TCP connection, allowing the system's network stack to detect any problems before a build is started.

The interval can be modified by specifying the interval in seconds using the keepalive_interval parameter of BuildSlave:

     c['slaves'] = [ BuildSlave('bot-linux', 'linuxpasswd',

The interval can be set to None to disable this functionality altogether.