javaspringamazon-web-servicessocket.ionetty-socketio

Netty SocketIO - Cannot assign requested address in AWS

I have implemented a websocket server using Spring framework and Netty SocketIO. While development I used the host address as localhost and the server was working perfectly fine.

When I'm trying to deploy my code to AWS, I changed the host address to my instance's public IP address. But I'm getting the following error and I'm unable to start my server

Caused by: java.net.BindException: Can't assign requested address
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:433)
at sun.nio.ch.Net.bind(Net.java:425)
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:125)
at io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:484)
at io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1080)
at io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:430)
at io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:415)
at io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:903)
at io.netty.channel.AbstractChannel.bind(AbstractChannel.java:197)
at io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:350)
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:380)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:357)
at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137)

If I can's assign my public IP address in AWS for host then which IP address can I use to start my Socket server?

Solution

  • Check your /etc/hosts file. 127.0.0.1 or 192.168.10.10 or whatever your IP is that is pointed to localhost must point towards your website also.

    127.0.0.1 localhost my.website.com

    Now, start your socket with my.website.com as host and choose a port as you wish.