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RE : [lwip-devel] Does UDP-Lite sending really work?

From: Goldschmidt Simon
Subject: RE : [lwip-devel] Does UDP-Lite sending really work?
Date: Tue, 5 Jun 2007 08:13:01 +0200

Does anyone actually use the UDP-Lite protocol and can confirm it
works like it is now? The checksum-generation (especially the
pseudo-header used for it) doesn't make sense to me!

> As it is now, on sending over a udp-lite udp_pcb,
> the checksum is generated with a pseudo header containing
> IP_PROTO_UDP as protocol information. On receiving, however,
> IP_PROTO_UDPLITE is used for checking. Also, when sending
> using ip_output IP_PROTO_UDPLITE is used.
> Shouldn't IP_PROTO_UDPLITE also be used to generate the
> checksum or am I missing something???


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