http://anonsvn.wireshark.org/viewvc/viewvc.cgi?view=rev&revision=51886
User: cmaynard
Date: 2013/09/09 12:39 PM
Log:
Fix the "crossed chopping region" problem. Also, move chopping to its own function for both clarity and correctness since we need to compute chop offsets and lengths on a per-packet basis whereas previously this was not being done.
Lastly, try to improve the documentation a bit concerning chopping and provide another example depicting 2 separate chopping regions. *Maybe* this is clearer?
One more example here for posterity: Given the following 75 byte packet, there
are 8 different ways to chop the 2 regions marked as 10 and 20 in a single pass:
<--------------------------- 75 ---------------------------->
+---+-------+-----------+---------------+-------------------+
| 5 | 10 | 15 | 20 | 25 |
+---+-------+-----------+---------------+-------------------+
1) editcap -C 5:10 -C -25:-20 in.pcap out.pcap
2) editcap -C 5:10 -C 50:-20 in.pcap out.pcap
3) editcap -C -70:10 -C -25:-20 in.pcap out.pcap
4) editcap -C -70:10 -C 50:-20 in.pcap out.pcap
5) editcap -C 30:20 -C -60:-10 in.pcap out.pcap
6) editcap -C 30:20 -C 15:-10 in.pcap out.pcap
7) editcap -C -45:20 -C -60:-10 in.pcap out.pcap
8) editcap -C -45:20 -C 15:-10 in.pcap out.pcap
Directory: /trunk/doc/
Changes Path Action
+14 -6 editcap.pod Modified
Directory: /trunk/
Changes Path Action
+128 -82 editcap.c Modified