sclass HandleProxyRequest {
  HostAndPort hap;
  bool rewriteHost; // unused?
  bool rewritePort;
  NanoHTTPD.IHTTPSession session;
  IVF1<StandaloneHttpProxy.Request> customizeRequest;
  
  new StandaloneHttpProxy proxy;
  
  run ctex {
    S headers = windowsLineBreaks(lines(concatLists(
      ll(session.getMethod() + " " + session.getFullURI() + " " + session.getProtocolVersion()),
      withoutStartingWithIC("Host:", session.getHeaderLines())
    )));
    
    S domain = dropPortFromHost(mapGet(session.getHeaders(), "host"));
    
    proxy.rewriteHostHeader = rewritePort;
    proxy.forwardServerAndPort = req -> hap;
    proxy.takeOverIncomingSocket(domain, session.getSocket(),
      session.getInputStream(),
      session.getOutputStream(),
      toUtf8(printQuoted("HEADERS: ", headers)),
      customizeRequest);
  }
}