always getting 54320 as external port

[frostwire]

is that the expected behavior?

I see that get_ip_info defines 54320 as the default external port, but if I remember correctly, whenever I invoked get_ip_info (about a month ago) I'd get the port the STUN server would see me through, or am I hallucinating?

[liuqun]

Hi @frostwire ,
It seems to be buggy:
On my Ubuntu Linux platform I always got external_port=54320.
But on Windows extern_port is a random port number chosen by my router.

We'd better read the source code as the README said.

pystun/README.rst

Lines 82 to 89 in 1191d3d

	You may also specify the client interface and port that is used although this
	is not needed::
	sip = "0.0.0.0" # interface to listen on (all)
	port = 54320 # port to listen on
	nat_type, external_ip, external_port = stun.get_ip_info(sip, port)
	Read the code for more details...

pystun/stun/__init__.py

Lines 246 to 257 in ab5eb34

	def get_ip_info(source_ip="0.0.0.0", source_port=54320, stun_host=None,
	stun_port=3478):
	s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
	s.settimeout(2)
	s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
	s.bind((source_ip, source_port))
	nat_type, nat = get_nat_type(s, source_ip, source_port,
	stun_host=stun_host, stun_port=stun_port)
	external_ip = nat['ExternalIP']
	external_port = nat['ExternalPort']
	s.close()
	return (nat_type, external_ip, external_port)