Jp Calderone wrote:
On Thu, 06 Jan 2005 14:35:16 +0100, J Berends <[EMAIL PROTECTED]> wrote:
From several approached I came up with the following code:
def getipaddr(hostname='default'):
"""Given a hostname, perform a standard (forward) lookup and return
a list of IP addresses for that host."""
if hostname == 'default':
hostname = socket.gethostname()
ips = socket.gethostbyname_ex(hostname)[2]
ips = [i for i in ips if i.split('.')[0] != '127']
if len(ips) != 0:
# check if we have succes in determining outside IP
ip = ips[0]
elif len(ips) == 0 and hostname == socket.gethostname():
# when we want to determine local IP and did not have succes
# with gethostbyname_ex then we would like to connect to say...
# google.com and determine the local ip address bound to the
# local socket.
try:
s = socket.socket()
s.connect(('google.com', 80))
print ('___ connecting to internet to determine local ip')
ip = s.getsockname()[0]
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.connect(('1.2.3.4', 56))
ip = s.getsockname()[0]
del s
except:
print ('*** cannot connect to internet in order to \
determine outside IP address')
raise Exception
if len(ip) != 0:
return ip
else:
print ('*** unable to determine outside IP address')
raise Exception
It returns the IP address with which it connects to the world (not lo),
might be a pvt LAN address or an internet routed IP. Depend on where the
host is.
I hate the google trick actually, so any suggestions to something better
is always welcome.
Jp
thanks implemented and works like a charm.
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