Example usage for io.netty.handler.codec.haproxy HAProxyCommand PROXY

Introduction

In this page you can find the example usage for io.netty.handler.codec.haproxy HAProxyCommand PROXY.

Prototype

HAProxyCommand PROXY

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Document

The PROXY command represents a connection that was established on behalf of another node, and reflects the original connection endpoints.

Usage

From source file:org.dcache.xrootd.plugins.ProxyAccessLogHandler.java

License:Open Source License

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
    if (msg instanceof HAProxyMessage) {
        HAProxyMessage proxyMessage = (HAProxyMessage) msg;
        if (proxyMessage.command() == HAProxyCommand.PROXY) {
            InetSocketAddress remoteAddress = (InetSocketAddress) ctx.channel().remoteAddress();
            InetSocketAddress localAddress = (InetSocketAddress) ctx.channel().localAddress();
            String sourceAddress = proxyMessage.sourceAddress();
            String destinationAddress = proxyMessage.destinationAddress();

            if (proxyMessage.proxiedProtocol() == HAProxyProxiedProtocol.UNKNOWN) {
                NetLoggerBuilder log = new NetLoggerBuilder(INFO, "org.dcache.xrootd.connection.start")
                        .omitNullValues();
                log.add("session", CDC.getSession());
                log.add("socket.remote", remoteAddress);
                log.add("socket.local", localAddress);
                log.toLogger(logger);/*from  w  ww .j  a v  a  2  s. c om*/
                replaceWith(ctx, handler);
            } else if (!Objects.equals(destinationAddress, localAddress.getAddress().getHostAddress())) {
                /* The above check is a workaround for what looks like a bug in HAProxy - health checks
                 * should generate a LOCAL command, but it appears they do actually use PROXY.
                 */
                NetLoggerBuilder log = new NetLoggerBuilder(INFO, "org.dcache.xrootd.connection.start")
                        .omitNullValues();
                log.add("session", CDC.getSession());
                log.add("socket.remote", HostAndPort.fromParts(sourceAddress, proxyMessage.sourcePort()));
                log.add("socket.proxy",
                        HostAndPort.fromParts(destinationAddress, proxyMessage.destinationPort()));
                log.add("socket.local", localAddress);
                log.toLogger(logger);
                replaceWith(ctx, handler);
            }
        }
    }
    super.channelRead(ctx, msg);
}

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