python - How to obtain ports that a process in listening on?

Question

How do I get the ports that a process is listening on using python? The pid of the process is known.

Answer 1

You can use psutil:

>>> import psutil
>>> p = psutil.Process(2549)
>>> p.name()
'proftpd: (accepting connections)'
>>> p.connections()
[connection(fd=1, family=10, type=1, local_address=('::', 21), remote_address=(), status='LISTEN')]

...To filter for listening sockets:

>>> [x for x in p.get_connections() if x.status == psutil.CONN_LISTEN]
[connection(fd=1, family=10, type=1, local_address=('::', 21), remote_address=(), status='LISTEN')]
>>>