A Network Problem

[watermelonyu]

Why is UDP needed? Why can't a user program directly access IP?



Thanks



Eric

[watermelonyu]

Hi Rric :



I think you are talking about the raw IP

access. Raw sockets are used to bypass the

transport layer, TCP and UDP, and are used to

capture raw IP packets. Typically, raw

sockets implementation have been buggy,

unportable, and limited in use. Raw sockets

are not supported in HP-UX.



HP-UX has an unsupported raw socket

definition SOCK_RAW in

/usr/include/sys/socket.h.

The effective user ID must be superuser.

HP-UX does not support routing sockets or

sequential packet/encapsulated packet

functionality.



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