December 2005
Intermediate to advanced
252 pages
8h 55m
English
Content preview from Zero Configuration Networking: The Definitive GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 7. Using the C APIs
In Chapter 6, you experimented with advertising, browsing for, and looking up Zeroconf services from the command line. In this chapter, you will learn how to perform those same operations programmatically, using the C APIs. The remaining chapters in the book address other APIs and languages. In each of the APIs, the general concepts are the same—you perform one of the basic DNS-SD operations and then receive results asynchronously. In C, this means you initiate a DNS-SD action such as browsing and provide the address of a callback function. When there is a response, the callback function is called and the appropriate information is passed to it. By the end of this chapter, you could write your own version of the dns-sd command-line tool.
If you skipped the preceding chapter, you may want to go back and read it, since the dns-sd command-line tool is a good learning tool for exploring the concepts, and it’s a good debugging aid if your code is not working as expected. If you are creating a program that registers a service, then you can browse with the command-line tool to verify that the service is being advertised. As you run and quit your growing application during development, you can leave the command-line browser running in a terminal window to confirm when you have successfully registered your service. Similarly, if you are building an application that needs to browse for services of a particular type, and you don’t have any real instances of that ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.