Re: How to determine the local port?

anketm@xxxxxxxxx wrote:
>
> I am writing a simple client using UDP sockets.
> I am wondering if there is any way to determine what local port a
> socket was bound to when bind() is not explicitly called.
>
> This is what my program looks like:
>
> sock = socket(PF_INET, SOCK_DGRAM, 0);
> sendto(sock, message, strlen(message) + 1, 0, (struct sockaddr *)
> &server, sizeof(server));
>
> Note that bind() was not called, and the socket was arbitrarily(?)
> bound to a local port by the kernel. How do I determine what port
> it was bound to?

This is all off topic here. See the references in my sig below,
especially the first two.

--
Some useful references about C:
<http://www.ungerhu.com/jxh/clc.welcome.txt>
<http://benpfaff.org/writings/clc/off-topic.html>
<http://www.eskimo.com/~scs/C-faq/top.html>
<http://anubis.dkuug.dk/jtc1/sc22/wg14/www/docs/n869/> (C99)
<http://www.dinkumware.com/refxc.html> (C-library}
<http://gcc.gnu.org/onlinedocs/> (GNU docs)


.

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