问Node的 http-proxy 代理？

// Setup prox to handle blog requests
httpProxy.createServer({
    hostnameOnly: true,
    router: {
        'http://localhost': '8080',
        'http://localhost/blog': '2368' 
    }
}).listen(8000);

http.createServer(app).listen(app.get('port'), function(){
    console.log("Express server listening on port " + app.get('port'));
});

var options = {
    // pathnameOnly: true,
    router: {
        'localhost': 'localhost:8080',
        'localhost/blog': 'localhost:2368'
    }
}

// Setup prox to handle blog requests
var proxyServer = httpProxy.createServer(options);
proxyServer.listen(9000);

require('./app/server/router')(app);

http.createServer(app).listen(app.get('port'), function(){
    console.log("Express server listening on port " + app.get('port'));
});