Question #85577 on rohc changed:
https://answers.launchpad.net/rohc/+question/85577
Status: Open => Answered
Didier Barvaux proposed the following answer:
The compression statistics contain one line per packet that is transmitted
through the ROHC tunnel. The fields on every line are in order:
- the sequence number of the packet (this sequence may eventually overflow and
the result is undetermined),
- the mode of the ROHC compressor (among "error", "U-mode", "O-mode" and
"R-mode"),
- the state of the ROHC compressor (among "error", "IR", "FO" and "SO"),
- the total length of all uncompressed IP packets (header + payload),
- the total length of all uncompressed IP headers (header only, no payload),
- the total length of all compressed ROHC packets (header + payload),
- the total length of all compressed ROHC headers (header only, no payload),
- the number of packets dropped by the tunnel.
These fields are printed at the very end of the "tun2udp" function in the
source code of the tunnel application.
The decompression statistics contain one line per packet that is received
through the ROHC tunnel. The fields on every line are in order:
- the sequence number of the packet (this sequence may eventually overflow and
the result is undetermined),
- the total number of packets that were not correctly received (packets lost
on the network and packets that the ROHC library failed to decompress
correctly),
- the total number of packets that were lost on the network,
- the total number of packets that the ROHC library failed to decompress
correctly.
These fields are printed by the "print_decomp_stats" function in the source
code of the tunnel application.
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