You are now ready to test your new CoAP-enabled devices. The easiest way to do this is to use a publicly available CoAP test tool. In this book, we will use the Copper (Cu) plugin from Firefox, which adds the coap URI scheme to the browser and allows you to explore CoAP resources easily. In the next chapter, we will show how you can create CoAP clients communicating with CoAP servers using the CoapEndpoint class.
The Copper (Cu) plugin can be found at https://addons.mozilla.org/sv-se/firefox/addon/copper-270430/. If your CoAP server device is made available online, you can also use http://coap.me/ to test it. Check http://coap.technology/tools.html for a list of the different tools available.