Help Broadcasting a UDP packet on the LAN:URGENT
From: sarat chandra Annadata (saratchandra_a_at_yahoo.com)
Date: 10/20/03
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Date: Mon, 20 Oct 2003 10:47:51 -0700 (PDT) To: freebsd-net@freebsd.org
Hai,
I am need of some urgent techinical help to pull me out of a little problem. I have been
trying to broadcast a UDP packet(actually it is a DHCP offer packet) but
havent' successfully done it sofar. The following is the descripttion
about how I have been trying to do it.
1) I am creating a socket with sock_dgram option.
2)Next I am filling up the sockaddr_in structure, with IP address
255.255.255.255 and port number as DHCP client port number.
3)I am using the setsockopt call with at SOL_SOCKET level, with
SO_BROADCAST FLAG.
This call is not successfully returning.
moreover I am successfully setting the flag at the IP-level in either
case my send or sendto system calls fail.
I want some guidance regarding this, I want to use only socket
interface, in UNIX with C.
Please pull me out of this, and I shall be grateful to you.
A working piece of code will be of great help
Thank you,
Sincerely
Sarat Chandra.
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