morkai/coap-visualizer

Simple application for visualizing the communication between the CoAP client and the CoAP server.

CoAP Visualizer

Simple application for visualizing the communication between the CoAP client and the CoAP server.

Requirements

node.js

Node.js is a server side software system designed for writing scalable Internet applications in JavaScript.

• Version: ~0.10.10
• Website: http://nodejs.org/
• Download: http://nodejs.org/download/
• Installation guide: https://github.com/joyent/node/wiki/Installation

CoAP

The Constrained Application Protocol (CoAP) is a specialized web transfer protocol for use with constrained nodes and constrained (e.g., low-power, lossy) networks.

This project uses the h5.coap library to forward messages between the client and the server. h5.coap implements draft-ietf-core-coap-18 (which is pretty much the same from version -13), so the server must speak the same version.

Installation

Clone the repository:

git clone git://github.com/morkai/coap-visualizer.git

or download and extract it.

Go to the project's directory and install the dependencies:

cd coap-visualizer/
npm install

Starting

Start the application server:

cd coap-visualizer/
npm start

Application server should be listening for HTTP requests on port 61616 and for CoAP requests on port 1337.

Usage

1. Go to 127.0.0.1:61616.
2. Set the server endpoint to a host:port pair of a running CoAP server (e.g. coap.me:5683).
3. Send CoAP requests to coap://127.0.0.1:1337/.
4. Observe as the CoAP messages are exchanged between your client and the configured server.

If the Capture checkbox is checked, you are in control of what messages go through (individual messages can be delayed, dropped or forwarded). It's a useful feature for forcing retransmissions and timeouts.

License

This project is released under the MIT License.