Help Broadcasting a UDP packet on the LAN:URGENT

[Lars Eggert]

W. Richard Stevens
UNIX Network Programming
Prentice Hall

sarat chandra Annadata wrote:

> 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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-- 
Lars Eggert <larse at isi.edu>           USC Information Sciences Institute
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