This Technical Note contains a collection of archived Q&A's relating to a specific topic--questions sent the Developer Support Center (DSC) along with answers from the DSC engineers. Current Q&A's can be found on the Macintosh Technical Q&A's web site.
Last reviewed: 8/1/92
Can you please point us to the note that describes the Responder protocol? I recall seeing it documented somewhere.
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If you have seen any Responder documentation around, it must be bootleg documentation. After talking with the AppleTalk engineers, I was assured that this documentation is not available. Some people wanted it available; others didn't. Guess who won.
Anyway, the Responder uses ATP (AppleTalk Transaction Protocol) as well as AEP (AppleTalk Echo Protocol) to send/receive data from one machine to another. If you have a copy of Peek and Inter*Poll you can check this out on the network to better understand it. It's a pretty straightforward implementation. AEP and ATP are documented in Inside AppleTalk. These, coupled with Gestalt or SysEnvirons, to get any machine-specific information you may wish to send, should be all you need to understand how the Responder works.