Implementing distributed objects in cocoa

I have two Cocoa applications out of which one is a launc开发者_运维问答hd daemon (Foundation tool). I need to call some of the methods in the main application from the daemon. How do I use Distributed Objects here? Can anybody suggest a complete tutorial (except Apple documentations) for this?

My (otherwise pretty out of date now) comp.lang.objective-c FAQ listing includes a question: How do I forward messages between remote objects? which explains how to do DO and includes a link to some GNUstep documentation on DO.

Much of the documentation on Distributed Objects on the web (in 2016) appears largely out of date and won't even compile on XCode 7.1. Also, @user23743 's answer had a broken link. Here's a more current (as of 2016) StackOverflow answer that shows you how to do it now.