Question

Is it possible to use Bonjour from command line? For example if I want to register a service I type something like that: bonjour -register service_name port. And then Bonjour allocate a free IP for my service. Or, for example, if I want to see a list of available services I type something like: bonjour -showServices. And then I get list of all available services with their names, IP addresses and ports. Does something like that exist?

I am kind of confused by the available documentation. For example here, in the beginning of the document I see:

To register your service, call DNSServiceRegister.

Where should I call it? In the command line? In Java? In C++? In python? It is kind of strange that this kind of context is not provided.

In general, I find just a general information about zeroconf and Bonjour (what it is supposed to do). But I cannot find something concrete and simple. Like "Hello World" examples of usage of Bonjour.

Can anybody help me with that?

Answer 1

dns-sd is the command line program that works on both windows and Mac OS X.

I often use it to tunnel iTunes shares over the internet with ssh. My typical use is dns-sd -P my_music _daap._tcp. local 3690 localhost 127.0.0.1. This assumes that I ve set up an ssh tunnel listen on localhost port 3690 to port 3689 of the host sharing iTunes on the foreign network. This makes a little iTunes share icon appear in iTunes named "my_music".

Answer 2

mDNS is an older version of the dns-sd tool. They are both command line tools, written by Apple, to interact with Bonjour.

You can use the command line tool to do a few things with Bonjour, but to quote from the dns-sd man page:

The dns-sd command is primarily intended for interactive use. Because its command-line arguments and output format are subject to change, invoking it from a shell script will generally be fragile.

If you wish to perform DNS Service Discovery operations from a scripting language, then the best way to do this is not to execute the dns-sd command and then attempt to decipher the textual output, but instead to directly call the DNS-SD APIs using a binding for your chosen language.

For example, if you are programming in Ruby, then you can directly call DNS-SD APIs using the dnssd package documented at http://rubyforge.org/projects/dnssd/. Similar bindings for other languages are also in development.

For example, you asked about "DNSServiceRegister", which is a C function:
http://developer.apple.com/library/mac/#documentation/Networking/Reference/DNSServiceDiscovery_CRef/dns_sd_h/index.html#//apple_ref/c/func/DNSServiceRegister

Answer 3

Yes, it is certainly possible. Take a look at the man page for mDNS

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