site_archiver@lists.apple.com Delivered-To: darwin-kernel@lists.apple.com On Sep 17, 2004, at 16:22, Matt Jaffa wrote: On Sep 17, 2004, at 3:53 PM, Justin Walker wrote: Regards, Justin -- Justin C. Walker, Curmudgeon-At-Large * Institute for General Semantics | When LuteFisk is outlawed | Only outlaws will have | LuteFisk *--------------------------------------*-------------------------------* _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.a... On Sep 17, 2004, at 13:32, Matthew Jaffa wrote: [snip] Now the problem is, is inserting my own HTTP/1.1 response into the input stream of the machine that made the request. [snip] I am doing the checksumming correct now for the ipheader and tcpheader, If you literally mean you checksummed the tcpheader, then you have a problem: the TCP checksum covers all the TCP data. I read on the internet that the TCP checksum is calculated with the tcphdr, pseudo header that has IP elements in it, and the TCP data. I threw all of the in a mbuf and then used in_cksum and it calculates it. Depending on where you inject your frames, you may be able to see the packet with tcpdump; have you tried that? Also, the pseudo header is kind of tricky, so you should look at code that computes it to be sure... This email sent to site_archiver@lists.apple.com