.Dd October 12, 2015
.Dt FRAME_DELAY 8
.Os Darwin
.Sh NAME
.Nm frame_delay
.Nd Utility to measure TCP/UDP frame delay
.Sh DESCRIPTION
.Pp
The
.Nm
utility is designed to measure the effect of latency on
delivery of evenly spaced TCP/UDP frames. This can be latency induced
due to buffering or protocol stack or network drivers.
.Pp
The following options are available:
.Bl -tag -width indent
.It Fl m
Server/Client mode. Should be "server" or "client".
.It Fl t
TCP/UDP frame. Should be either "tcp" or "udp".
.It Fl i
(Client Only) Server ip address.
.It Fl p
Port number.
.It Fl n
Number of frames.
.It Fl f
Frame size.
.It Fl d
(Client only) Delay traffic class. Pick one from {BK_SYS, BK, BE, RD, QAM, AV, RV, VI, VO, CTL}.
.El
.Sh EXAMPLES
.Pp
Setup TCP server:
.Dl "frame_delay -m server -t tcp -p 10010 -n 10 -f 1000"
.Pp
Setup corresponding TCP client:
.Dl "frame_delay -m client -t tcp -i 127.0.0.1 -p 10010 -n 10 -f 1000 -d 2000 -k RD"
.Sh AUTHORS
.An Padma Bhooma ,
.An Kang Sun ,
.An Vincent Lubet .