Subject: Re: UDP data transfer using RAW socket.
To: None <>
From: Jason R Thorpe <>
List: tech-net
Date: 07/14/2002 09:20:21
On Sun, Jul 14, 2002 at 05:58:23PM +0530, wrote:

 > I would like to transfer UDP datagram using RAW socket. I have created UDP
 > & IP headers at application ( setsockopt - is used). The transmitter uses
 > raw socket and receiver waiting on a normal udp socket.
 > But, the receiver is not able to receive the packets.
 > Can anybody give help me, to solve this problem

Read the ip(4) manual page -- it provides some details on using IP_HDRINCL.
In particular, some fields of the IP header must be provided in host byte
order -- the kernel will then convert them to network order before sending
the packet.

        -- Jason R. Thorpe <>