jWebSocket

jWebSocket is provided tools to use when create HTML5-based streaming and communication applications.

Because HTML5 WebSockets look like they will replace the existing XHR approaches as well as Comet services by a new flexible and ultra high speed bidirectional TCP socket communication technology, jWebSocket is the perfect tool, being a Java and JavaScript implementation of the HTML5 WebSocket protocol.

jWebSocket comes with a huge set of extensions.

jWebSocket comes with a Server and Client solution and also FlashBridge, a Flash based WebSocket Wrapper for cross-browser compatibility.

Features:

• Fully cross-browser compatible WebSocket implementation
• Basic API with connect, login, send, broadcast, receive, logout and disconnect methods
• Security system with authentification and rights and role based authorization *
• WebSocket based message interchange for browser to browser communication
• Message broadcast to all clients (e.g. for shut down notification) or group members
• Comprehensive streaming capabilities with multiple data pumps
• Client registration to one or more server data streams on a single socket
• Full socket session management with configurable timeouts
• Keep-alive and auto-reconnect mechanisms as well as ping functionality
• API for external streaming and communication applications
• Custom specific plug-ins on server and client
• Remote Procedure Calls (RPC) from web clients to granted Java methods on the server
• Reverse Remote Procedure Calls (RRPC) from server to granted methods on the web clients
• Integrated optional user and group management (e.g. for chat rooms or limited broadcast pools)
• Methods to retreive registered groups, users, users per group and available streams
• Extensible event system (e.g. to notify all clients when a user logs in or out)
• Extensible token based data exchange with JSON, CSV and XML (pending) support
• Comprehensive logging functions (uses log4j, console, file, rolling file etc.)
• Configurable via single jWebSocket.xml file
• Multiple jWebSocket servers on a single machine (operating on different ports, e.g. for different communication protocols or multiple services)
• Available as Java .jar archive, as Windows executable and as Windows service for production systems
• Includes TCP engine and supports JBoss Netty engine
• Easy integration into existing Tomcat web applications (thus easily extend existing web 2.0 apps)
• Additional minimized JavaScript clients to improve speed and save network bandwidth