NAME

mdnsctl — control the Multicast Domain Server daemon

SYNOPSIS

DESCRIPTION

The mdnsctl program controls the mdnsd(8) daemon, it can perform simples MDNS lookups, as well as browsing and publishing MDNS/DNS-SD services.

The following commands are available:

lookup [rr-types] host.local

Look up resource records for host.local. The optional rr-types specifies which type of resource record should be looked up. It can be any combination of the following:

-a

A record (IPv4 Address). This is the default.

-h

HINFO record (Host Information).

-s

SRV record (Service). Unimplemented.

-t

TXT record (Text). Unimplemented.

rlookup a.b.c.d

Reverse lookup an IPv4 address in the a.b.c.d form, use this to obtain the hostname of the given address.

browse [-r] [-s] [application proto]

Browse for application services of type application for the given transport protocol proto. application may be any application service type, like http, workstation, ftp, printer... proto must be either tcp or udp. Defaults to all services if none specified.

publish service-name application proto port text-string

Publish services via dns-sd, service-name is the unique chosen name for the service, it can be any string up to 63 characters. The application is the application protocol for the service, like http, ftp... proto is the transport protocol, must be either tcp or udp. port is the tcp or udp port. text-string is the string in the TXT record for the given service, it can be used to express additional service information.

proxy service-name application proto port host address text-string

Proxy publish a service running on a different machine, in addition to the arguments used for publish, host is a fully qualified domain name (FQDN) of the target machine, address is an IPv4 address for the target machine in the a.b.c.d form.

FILES

/var/run/mdnsctl.sock

UNIX-domain socket used for communication with mdnsd(8).

EXAMPLES

The following examples demonstrate some basic uses of mdnsctl.

# Lookup a host A and HINFO record
mdnsctl lookup -ah foobar.local

# Reverse lookup an address
mdnsctl rlookup 192.168.8.32

# Browse up all services in the local network
mdnsctl browse

# Browse and resolve all services
mdnsctl browse -r

# Browse and resolve all services and output in script-readable format
mdnsctl browse -rs

# Browse and resolve all the http services in the local network
mdnsctl browse -r http tcp

# Publish a simple ftp service
mdnsctl publish myftp ftp tcp 21 "user=foobar"

# Proxy publish a https service that has www.mysite.com as the target
mdnsctl proxy mysite https tcp 443 www.mysite.com 12.3.45.6 "user=foobar"

SEE ALSO

mdnsd(8)

LICENSE

mdnsctl is released under the ISC license.

HISTORY

The mdnsctl program version 0.1 was released in 13 February 2011.

AUTHORS

Christiano Farina Haesbaert <haesbaert@haesbaert.org>