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.\" $OpenBSD: spray.8,v 1.8 2003/06/26 18:41:22 jmc Exp $
.\"
.\" Copyright (c) 1994 James A. Jegers
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. The name of the author may not be used to endorse or promote products
.\" derived from this software without specific prior written permission
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.\"
.Dd July 10, 1995
.Dt SPRAY 8
.Os
.Sh NAME
.Nm spray
.Nd send many packets to host
.Sh SYNOPSIS
.Nm spray
.Op Fl c Ar count
.Op Fl d Ar delay
.Op Fl l Ar length
.Ar host ...
.Sh DESCRIPTION
.Nm
sends multiple RPC packets to
.Ar host
and records how many of them were correctly received and how long it took.
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl c Ar count
Send
.Ar count
packets.
.It Fl d Ar delay
Pause
.Ar delay
microseconds between sending each packet.
.It Fl l Ar length
Set the length of the packet that holds the RPC call message to
.Ar length
bytes.
Not all values of
.Ar length
are possible because RPC data is encoded using XDR.
.Nm
rounds up to the nearest possible value.
.El
.Pp
.Nm
is intended for use in network testing, measurement, and management.
This command
.Bf -emphasis
can be very hard on a network and should be used with caution.
.Ef
.Sh SEE ALSO
.Xr netstat 1 ,
.Xr ifconfig 8 ,
.Xr ping 8 ,
.Xr rpc.sprayd 8
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