Clojurians Log v2

Hello. How do I implement a handler for an http CONNECT request? I am creating a proxy server and I do not know how to open a tcp connection and then pass the traffic between the browser and the server using the proxy. Is an example of this documented? In the request from the browser there is :aleph/channel which is a NioSocketChannel. I was thinking maybe I could create a TCP connection to the server, then connect that to the request channel?