Re: INADDR_ANY
On 15 Feb 2006 09:07:26 -0800, "Wenfei" <ye_wenfei@xxxxxxxxxxx> wrote:
addr_in.sin_addr.s_addr = INADDR_ANY;
fprintf("server address is %s\n", inet_ntoa(addr_in.sin_addr));
When I try to see the address as above, it always show me
0.0.0.0. But I know the real address which my server uses is
not 0.0.0.0. How I can know the real address of INADDR_ANY
which is assigned automatically by the machine?
By setting the sin_addr.s_addr member to INADDR_ANY you're not
actually setting it to a real IP address. Just letting the
kernel know that it can use the 'most appropriate address' based
on the route which the packets will traverse. To find out what
that address is, you'll have to actually make a connection, and
then use getsockname() on the socket to find out the socket's
current IP address.
- Giorgos
.
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