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- $6 ~ /^ack/ && $5 !~ /[SFR]/ {
- # given a tcpdump ftp trace, output one line for each ack
- # in the form
- # <ack time> <seq no>
- # where <ack time> is the time packet was acked (in seconds with
- # zero at time of first packet) and <seq no> is the tcp sequence
- # number of the ack divided by 1024 (i.e., Kbytes acked).
- #
- # convert time to seconds
- n = split ($1,t,":")
- tim = t[1]*3600 + t[2]*60 + t[3]
- if (! tzero) {
- tzero = tim
- OFS = "\t"
- }
- # get packet sequence number
- printf "%7.2f\t%g\n", tim-tzero, $7/1024
- }
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