September 2015
Intermediate to advanced
150 pages
3h 9m
English
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Chapter 4. STOMP over WebSocket
In previous chapters you built simple applications using the WebSocket API both on the server side and on the client. You built a multiclient chat application with WebSocket as the communication layer. Chapter 2 briefly discussed using subprotocols with WebSocket. Now you’ll take everything learned thus far and layer another protocol on top of WebSocket.
STOMP, an acronym for Simple Text Oriented Messaging Protocol, is a simple HTTP-like protocol for interacting with any STOMP message broker. Any STOMP client can interact with the message broker and be interoperable among languages and platforms.
In this chapter you’ll create a client and server that communicate using the STOMP protocol over WebSocket rather than TCP. You will learn how to connect to RabbitMQ by using the Web-Stomp plug-in, which uses WebSocket as its underlying wire protocol.
As in previous chapters, you’ll create a new project folder for Chapter 4 examples with the abbreviated name ch4. The examples in this chapter again use a stock ticker, and use messaging to subscribe for stock updates. In addition, there are two examples in this chapter, so create a subdirectory named proxy. You’ll create several files to build a real working table of stock prices powered by STOMP over WebSocket. Here are the files that you will use:
- client.html
-
The frontend code base; as before, copy the template used in Chapter 1.
- server.js
-
The WebSocket proxy that talks to RabbitMQ using AMQP while ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.