Tools for multicast testing (msend and mreceive)
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.\" Hey, EMACS: -*- nroff -*-
.\" First parameter, NAME, should be all caps
.\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
.\" other parameters are allowed: see man(7), man(1)
.Dd Jul 29, 2015 $
.\" Please adjust this date whenever revising the manpage.
.Dt MSEND 8 SMM
.Os
.Sh NAME
.Nm mreceive
.Nd receive UDP multicast messages and display them
.Sh SYNOPSIS
.Nm
.Op Fl g Ar GROUP
.Op Fl p Ar PORT
.Op Fl i Ar ADDRESS
.Op ...
.Op Fl i Ar ADDRESS
.Op Fl n
.Nm
.Op Fl v | Fl h
.Sh DESCRIPTION
Join a multicast group specified by the
.Fl g
and
.Fl p
options, then receive and display the multicast packets sent to this
group:port by the
.Xr msend 8
command.
.Sh OPTIONS
.Bl -tag -width Ds
.It Fl g Ar GROUP
Specify the IP multicast address from which the packets are received.
The default group is
.Nm 224.1.1.1 .
.It Fl p Ar PORT
Specify the UDP port number used by the multicast group. The default
port number is
.Nm 4444 .
.It Fl i Ar ADDRESS
Specify the IP addresses of one or more interfaces to receive multicast
packets. The default value is
.Nm INADDR_ANY
which implies that the default interface selected by the system will be
used.
.It Fl n
Interpret the contents of the message as a number instead of a string of
characters. This option should be given when running
.Nm msend
with the
.Fl n
option.
.It Fl v
Print version information.
.It Fl h
Print the command usage.
.Sh SEE ALSO
.Xr msend 8