Professional Java for Web Applications

Chapter 10Making Your Application Interactive with WebSockets

IN THIS CHAPTER

• How Ajax evolved to WebSockets
• A discussion on the WebSocket APIs
• Using WebSockets to create multiplayer games
• Communicating in a cluster with WebSockets
• How to add chatting to a web application

WROX.COM CODE DOWNLOADS FOR THIS CHAPTER

You can find the wrox.com code downloads for this chapter at http://www.wrox.com/remtitle.cgi?isbn=1118656464 on the Download Code tab. The code for this chapter is divided into the following major examples:

• Game-Site Project
• Simulated-Cluster Project
• Customer-Support-v8 Project

NEW MAVEN DEPENDENCIES FOR THIS CHAPTER

In addition to the Maven dependencies introduced in previous chapters, you also need the following Maven dependencies:

        <dependency>
            <groupId>javax.websocket</groupId>
            <artifactId>javax.websocket-api</artifactId>
            <version>1.0</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <version>3.1</version> <scope>compile</scope> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>2.3.2</version> <scope>compile</scope> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>2.3.2</version> <scope>compile</scope> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.3.2</version> ...