Comments on: DNS Service Discovery On Windows

By: David M. Cotter

David M. Cotter — Fri, 23 Mar 2012 18:59:45 +0000

Oh wow! This is *just* the hint i needed! thank you SO much!

The link you need to download the *sources* is this:
http://www.macosforge.org/
right there at the top is the tarball for mDNSResponder.

so simple! all i did was open the project:
mDNSWindows/DLL/dnssd.vcproj

then build. and it worked! wow!

By: Mark Nelson

Mark Nelson — Tue, 13 Mar 2012 13:39:08 +0000

@touchblue:

Must be an update of the SDK – a few of the constants that are passed as arguments have been added as time goes on.

- Mark

By: touchblue

touchblue — Tue, 13 Mar 2012 01:38:38 +0000

Thanks a lot for your reply. And i use vc2010, the code works.
In the code of ServiceBrowserDlg.cpp, the interface of DNSServiceGetAddrInfo in line 345 has some bad parameter? The second parameter was set kDNSServiceFlagsForceMulticast by me:)

By: Mark Nelson

Mark Nelson — Mon, 12 Mar 2012 11:18:29 +0000

My project was built with Visual Studio 10.

Visual C++ 6 is very, very old and so I am not surprised to find that you are encountering errors.

I’m not sure how far back the MDNS source code works, but my code will no doubt need tons of work in order to compile with VC++ 6.

- Mark

By: touchblue

touchblue — Mon, 12 Mar 2012 09:32:13 +0000

Thanks for your demo with my studying bonjour.
When i compile the demo code, there are some errors happened, some like SDKDDKVer.h can not be found. With google, some people said the lib is old with system. I use the visual c++ 6.0 version, and the windows xp. is it this reason?
I test another simple code, but also report errors. The errors happened in the dns_sd.h like:
c:\program files\bonjour sdk\include\dns_sd.h(126) : error C2146: syntax error : missing ‘;’ before identifier ‘uint8_t’
c:\program files\bonjour sdk\include\dns_sd.h(126) : fatal error C1004: unexpected end of file found

Do you meet with them?
Thanks for your reply :).

By: Mark Nelson

Mark Nelson — Thu, 08 Mar 2012 15:21:54 +0000

Good point. Updated source shortly.

By: Malte

Malte — Thu, 08 Mar 2012 15:17:56 +0000

Very helpful!
The portnumber in your tree is still in network byte order. The output should be ntohs(port).

By: Redeye

Redeye — Wed, 15 Feb 2012 20:30:38 +0000

This article is exactly what I’ve been looking for and I was really pleased when I found it. However, you’re absolutely right about it not being much of an SDK. In fact, I’ve found the restrictions it imposes to make it completely unworkable. I’m trying to replicate some objective-C Bonjour code I’ve already got working in iOS/OSX in an MFC application which also uses Boost and FreeImage libraries and using the SDK I just could not get it to link successfully.

But, I think there is another method… You can also get the mDNSresponder source code from the Apple website in a nice friendly VS2010 solution and in there you’ll find a DLL project which lets you compile your own dnssd.dll which you can then use with it’s .lib file to dynamically link and avoid the pitfalls. I’m no expert on this kind of stuff but I have managed to get it working successfully (for the moment at least).

I’d be interested to know if anyone else can get this method working, or if I’ve just been very lucky!!!