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| From: | Kelly Chan |
| Subject: | [lwip-users] What is the different between IP_PROTO_UPPLITE and IP_PROTO_UDP (regular)???? |
| Date: | Fri, 4 Jul 2003 08:09:28 -0600 |
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Hi
I am a
little confused as I don't understand the motivation behind two version of UDP IP Protocol:
IP_PROTO_UDP &
IP_PROTO_UDPLITE.
Also,
how does the receiver side know which version shall adopt when a UPD packet
arrive (According to RFC792, the transmission protocol does not have version
field)???
On top
of that, the IP_PROTO_UDP has a flag with NO_CHECK_SUM but the codes still
perform checksum???
Hmmm,
hopefully someone can explain this to me. Thanks in
advance.........
cheers
Kelly
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