$6 !~ /^ack/ && $5 !~ /[SFR]/ { | |
# given a tcpdump ftp trace, output one line for each send | |
# in the form | |
# <send time> <seq no> | |
# where <send time> is the time packet was sent (in seconds with | |
# zero at time of first packet) and <seq no> is the tcp sequence | |
# number of the packet divided by 1024 (i.e., Kbytes sent). | |
# | |
# 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 | |
i = index($6,":") | |
printf "%7.2f\t%g\n", tim-tzero, substr($6,1,i-1)/1024 | |
} |