Chapter 13. Communicating Near and Far
Communication is a very broad term. In an abstract sense, sending an Objective-C object a message is "communicating" with that object. At the other extreme, burning a file to a compact disc that's later read by another program "communicates" data to that application. This chapter focuses on communication technologies that exchange data directly between objects via an independent agent or service.
Within that scope, communications can be roughly divided into three domains: the exchange of messages between objects in the same process, the exchange of messages between objects in different processes, and the exchange of data over a network. This chapter will survey the common Objective-C technologies used for ...
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