bird control-socket: connection reset by peer

Hello bird users, I'm running bird 1.6.3 on ubuntu 16.04 as kind of a route server. I wrote a piece of software that connects to the bird control-socket and runs queries against it like this: "show route all for x.y.z.a protocol xxx". The software keeps the socket open and executes the queries in a loop persisting of a write() call followed by a read() call. Now to the problem: At some point bird resets the connection and the logs are not showing anything related. Did anyone make similar experiences or can help me to find out what's wrong with bird here? Thanks Oliver -- Oliver Herms oliver.peter.herms@gmail.com