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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 17:13:01 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 17:13:01 +0000 |
commit | 7adcb5b605cc1328a3084c334f4697ec9771936c (patch) | |
tree | 03e681bfda053978ba896745828e09cb056ad156 /send-ack.awk | |
parent | Initial commit. (diff) | |
download | tcpdump-upstream.tar.xz tcpdump-upstream.zip |
Adding upstream version 4.99.4.upstream/4.99.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'send-ack.awk')
-rw-r--r-- | send-ack.awk | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/send-ack.awk b/send-ack.awk new file mode 100644 index 0000000..f55b7c2 --- /dev/null +++ b/send-ack.awk @@ -0,0 +1,68 @@ +BEGIN { + # we need the number of bytes in a packet to do the output + # in packet numbers rather than byte numbers. + if (packetsize <= 0) + packetsize = 512 + expectNext = 1 + lastwin = -1 + } + { + # convert tcp trace to send/ack form. + n = split ($1,t,":") + tim = t[1]*3600 + t[2]*60 + t[3] + if (NR <= 1) { + tzero = tim + ltim = tim + OFS = "\t" + } + if ($6 != "ack") { + # we have a data packet record: + # ignore guys with syn, fin or reset 'cause we + # can't handle their sequence numbers. Try to + # detect and add a flag character for 'anomalies': + # * -> re-sent packet + # - -> packet after hole (missing packet(s)) + # # -> odd size packet + if ($5 !~ /[SFR]/) { + i = index($6,":") + j = index($6,"(") + strtSeq = substr($6,1,i-1) + endSeq = substr($6,i+1,j-i-1) + len = endSeq - strtSeq + id = endSeq + if (! timeOf[id]) + timeOf[id] = tim + if (endSeq - expectNext < 0) + flag = "*" + else { + if (strtSeq - expectNext > 0) + flag = "-" + else if (len != packetsize) + flag = "#" + else + flag = " " + expectNext = endSeq + } + printf "%7.2f\t%7.2f\t%s send %s %d", tim-tzero, tim-ltim,\ + flag, $5, strtSeq + if (++timesSent[id] > 1) + printf " (%.2f) [%d]", tim - timeOf[id], timesSent[id] + if (len != packetsize) + printf " <%d>", len + } + } else { + id = $7 + + printf "%7.2f\t%7.2f\t%s ack %s %d", tim-tzero, tim-ltim,\ + flag, $5, id + if ($9 != lastwin) { + printf " win %d", $9 + lastwin = $9 + } + printf " (%.2f)", tim - timeOf[id] + if (++timesAcked[id] > 1) + printf " [%d]", timesAcked[id] + } + printf "\n" + ltim = tim + } |