May 2011
Beginner
194 pages
3h 46m
English
Content preview from Getting Started with the Internet of Things
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Chapter 12. Handling Actuator Requests
To change the state of a resource, a web client can send PUT requests. A PUT request contains a representation of the desired new state of the resource. In this chapter’s example, an LED’s state (on/off) is controlled through a web service, as illustrated in Figure 12-1.
Figure 12-1. Architecture of LedController
LedController shows how to handle PUT requests; thus, it is a server program. Unfortunately, you cannot directly use a web browser as a client for sending PUT requests because web browsers are focused on GET requests. Later in this chapter you will see how you can write your own client program (in both ...
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