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