java - Selenium Hub Pause Data Stream -

i'm looking way pause data stream of selenium hub. idea wait till hub has finished processing test/batch, put on hold, send kill command node, on headless vm restart, upon reconnect allow data stream continue. idea allow nodes/vm's restart , refresh, potentially avoiding hangups , connection timeouts. thoughts?

instead of pausing data stream, can create java class implements testsessionlistener. interface has methods can tell when test starting , ending. can write custom code restart machines after each test or based on other logic.

you can refer selenium grid extras project uses this. more simple example on creating grid plugin refer grid plugin tutorial