def stop(self):
'''Stop tcpdump if it is running.'''
if self.tcpdump_proc:
status("Terminating tcpdump")
self.tcpdump_proc.terminate()
self.tcpdump_proc = None
self.current_outputfile = None
def start_test(self, test: str):
'''Call this at the beginning of a test.'''
self.running = test
status(test + " starting")