CODEWITHSUNDEEP
javanetty
Arsene
Arsene

Reputation: 1067

Netty Proxy server

I have the read the netty proxy server example. However I would like to know how to implement a client to talk to the proxy. The solution I am implementing is a server and it needs to connect to a socket server whenever a client connect to the server.So each client connected to the server will be able to send/receive data from another server.

I need help to inplement such architecture with netty because the server side is built on netty.

Upvotes: 1

Views: 3296

Answers (1)

wns349
wns349

Reputation: 1306

It seems what you want to implement can be pretty much answered by the Netty proxy example

The code segment below shows how you can connect to the remote server once a new client channel is opened. 

@Override
public void channelOpen(ChannelHandlerContext ctx, ChannelStateEvent e)
        throws Exception {
    // Suspend incoming traffic until connected to the remote host.
    final Channel inboundChannel = e.getChannel();
    inboundChannel.setReadable(false);

    // Start the connection attempt.
    ClientBootstrap cb = new ClientBootstrap(cf);
    cb.getPipeline().addLast("handler", new OutboundHandler(e.getChannel()));
    ChannelFuture f = cb.connect(new InetSocketAddress(remoteHost, remotePort));

    outboundChannel = f.getChannel();
    f.addListener(new ChannelFutureListener() {
        public void operationComplete(ChannelFuture future) throws Exception {
            if (future.isSuccess()) {
                // Connection attempt succeeded:
                // Begin to accept incoming traffic.
                inboundChannel.setReadable(true);
            } else {
                // Close the connection if the connection attempt has failed.
                inboundChannel.close();
            }
        }
    });
}

Once connected to the remote server, whatever the client sends (via inbound channel) is forwarded to the remote server (outbound channel).

I suggest you to follow and implement the proxy example if you haven't done it so already.

Upvotes: 1

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