Using JAVA NIO framework in SPRING server

Question

I\'m implementing an hybrid server application that mixes a Web-Servlet and a plain Java application.

The java application manages thousands of sockets for remote de

Answer 1

You can definitely run a NIO socket server and a web server in the same jvm using Spring. I have done it using Grails (which is a wrapper over spring anyway). I start the tcp server in the bootstrap class of Grails.

For normal spring web app, you can start the socket server listening at a particular port, say 8090 and the web server at say 8080 using spring framework lifecycle listeners or post processors.

Make your socket server to be a spring bean and use the init-method as shown below to actually start the socket server. Ths spring framework will automatically call it on bean instantiation.

An example configuration for a netty server could be like below:

<bean id="tcpServer" class="netty.NettyTCPServer"
        init-method="createServerBootstrap" destroy-method="stopServer">
        <property name="pipelineFactory" ref="pipelineFactory"></property>
</bean>

<bean id="pipelineFactory" class="netty.HandshakePipelineFactory">
        <lookup-method name="createHandshakeHandler" bean="handshakeHandler" />
        <property name="stringDecoder" ref="stringDecoder"></property>
        <property name="stringEncoder" ref="stringEncoder"></property>
        <property name="nulEncoder" ref="nulEncoder"></property>
        <property name="frameSize" value="256"></property>
</bean>