mirror of
https://github.com/the-tcpdump-group/tcpdump.git
synced 2024-11-23 10:04:05 +08:00
62 lines
1.4 KiB
Awk
62 lines
1.4 KiB
Awk
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BEGIN {
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# we need to know (usual) packet size to convert byte numbers
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# to packet numbers
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if (packetsize <= 0)
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packetsize = 512
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}
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$5 !~ /[SR]/ {
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# print out per-packet data in the form:
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# <packet #>
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# <start sequence #>
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# <1st send time>
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# <last send time>
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# <1st ack time>
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# <last ack time>
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# <# sends>
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# <# acks>
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n = split ($1,t,":")
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tim = t[1]*3600 + t[2]*60 + t[3]
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if ($6 != "ack") {
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i = index($6,":")
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strtSeq = substr($6,1,i-1)
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id = 1.5 + (strtSeq - 1) / packetsize
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id -= id % 1
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if (maxId < id)
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maxId = id
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if (firstSend[id] == 0) {
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firstSend[id] = tim
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seqNo[id] = strtSeq
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}
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lastSend[id] = tim
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timesSent[id]++
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totalPackets++
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} else {
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id = 1 + ($7 - 2) / packetsize
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id -= id % 1
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timesAcked[id]++
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if (firstAck[id] == 0)
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firstAck[id] = tim
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lastAck[id] = tim
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totalAcks++
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}
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}
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END {
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print "# " maxId " chunks. " totalPackets " packets sent. " \
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totalAcks " acks."
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# for packets that were implicitly acked, make the ack time
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# be the ack time of next explicitly acked packet.
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for (i = maxId-1; i > 0; --i)
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while (i > 0 && firstAck[i] == 0) {
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lastAck[i] = firstAck[i] = firstAck[i+1]
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--i
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}
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tzero = firstSend[1]
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for (i = 1; i <= maxId; i++)
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printf "%d\t%d\t%.2f\t%.2f\t%.2f\t%.2f\t%d\t%d\n",\
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i, seqNo[i], \
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firstSend[i] - tzero, lastSend[i] - tzero,\
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firstAck[i] - tzero, lastAck[i] - tzero,\
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timesSent[i], timesAcked[i]
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}
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