Subject: Assn 5 clarification

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A couple of students have students have become confused on this issue:

> I'm a little confused about rps_rcvdata.  After finding out that len >
> 0, the notes say to process the data in the buffer assuming the sequence
> number is correct, but the buffer isn't passed into rps_rcvdata.

While its true that the "buffer" isn't directly passed into rps_rcvdata,
the address of the header, which comes immediately before the data is


| (sizeof(rps_hdr_t) bytes      |    htons(hdr->len) bytes                  |
-----------------------------------------------------------------------------
^     TheHdr                            TheData
|
hdr


Soooo......

    char *TheData = (char *)hdr;
    TheData += sizeof(rps_hdr_t);

will do just what you need.