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Network byte ordering question ...

Mike Fletcher mfletch at tpresence.com
Mon Jun 5 23:05:56 EDT 2000 
( val1, val2, val3, val4, val5 ) = unpack( ">16sBBBi", header )

Should do it, no?  That is, the header is a string of 16 bytes followed by 3
unsigned single-byte integers, followed by a (signed) 32bit integer, all in
Network Byte Order.  You pack/unpack from/to Python native values, which are
always in the machine's byte order.

Packing would use the same pattern, and takes care of translating to/from
network byte order.

Yay! another Waterloovian Pythonista!
Mike

-----Original Message-----
From: istevens at calum.csclub.uwaterloo.ca
[mailto:istevens at calum.csclub.uwaterloo.ca]
Sent: Monday, June 05, 2000 9:22 PM
To: python-list at python.org
Subject: Network byte ordering question ...


...
FYI, here's what I've tried:

    ( val1, val2, val3, val4, val5 ) = unpack( "@16s1s1s1s4s", header )

This works somewhat but I would really like val1 to read as a string
containing numeric values (to preserve leading zeroes) and the other
values to read as numbers.  This is also specific to little-endian
machines and I'd like to generalize it.
...
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