"Boltar" wrote in message
news:d5c0b627-ca07-4ba5-ae1f-3f85d89e042d@r66g2000hsg.googlegroups.com...
> Hi
>
> I've noticed that if I create a TCP listening socket, using
> setsocktopt() with the SO_REUSEADDR option set it only seems to work
> if its done before bind() is called. Is this normal behaviour? Does
> it
> apply to all setsockopt() options or just this one?

Yes SO_REUSEADDR only applies if set before the call to bind(), since
it controls the behaviour of bind as described in this man page
http://www.rt.com/man/bind.2.html . Similarly, the socket option
SO_LINGER must be set before you close the socket with close(), since
it controls the behaviour of close(). Most other socket options should
take effect immediately, but consult the man pages for your system to
be sure.

> Thanks for any help

You're welcome!

Mark