Date: Tue, 5 Feb 2013 23:44:47 +0000 From: Gerald McNulty <gmnt99@gmail.com> To: freebsd-ipfw@freebsd.org Subject: Retrieving the destination port in an ipfw fwd'ed UDP packet Message-ID: <CAD%2B_bPw%2BgY-yhMXkivXoyH_EvVVA4B21S3unofBUAAC050phGA@mail.gmail.com>
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I'm trying to get the destination port from a UDP packet that's been ipfw fwd'ed to my code. Getting the destination IP address works fine with * setsockopt(...,IP_RECVDSTADDR,...)* and then *recvfrom*, but there doesn't seem to be a way to get the port. For TCP I could just use getsockname(2)<http://man.freebsd.org/getsockname/2>and getpeername(2) <http://man.freebsd.org/getpeername/2>; for all the IP address info but this only returns the locally bound address and port, not the actual destination. Is there an elegant way to get the destination IP port from an ipfw fwd'ed packet? Thanks
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