Kfir, On Mon, Jan 17, 2011 at 23:24 +0200, Kfir Lavi wrote:
Hi, How can one implement custom header network protocol. I mean header that wraps regular network packets like ethernet, udp, tcp, etc... The sending of this custom packets is done between processes running locally. ie. I get a Ethernet packet, inspect it, then add my custom header and forward it to another process that listens to a socket, and expect to get data wrapped with this custom header.
You might want to use datagram-oriented UNIX socket to communicate with client processes. Also you have to understand what do you want - getting UDP packets on specific port doesn't require anything special, just bind()'ing to this port. But you can get TCP segments only with SOCK_RAW socket. Thanks, -- Vasiliy