code: function proxyHttps(){
    httpServer.on('connect', function(req, socket, upgradeHead){
      var hostname = req.url.split(':')[0];
      log.debug('Create internal https server for ' + hostname);
      createInternalHttpsServer(hostname, function (err, httpsServerPort) {
        if (err) {
          log.error('Failed to create internal https proxy');
          log.error(err);
          return;
        }
        // get proxy https server
        var netClient = net.createConnection(httpsServerPort);
  
        netClient.on('connect', function(){
          log.info('connect to https server successfully!');
          socket.write( "HTTP/1.1 200 Connection established\r\nProxy-agent: Netscape-Proxy/1.1\r\n\r\n");
        });
  
        socket.on('data', function(chunk){
          netClient.write(chunk);
        });
        socket.on('end', function(){
          netClient.end();
        });
        socket.on('close', function(){
          netClient.end();
        });
        socket.on('error', function(err){
          log.error('socket error ' + err.message);
          netClient.end();
        });
  
        netClient.on('data', function(chunk){
          socket.write(chunk);
        });
        netClient.on('end', function(){
          socket.end();
        });
        netClient.on('close', function(){
          socket.end();
        });
        netClient.on('error', function(err){
          log.error('netClient error ' + err.message);
          socket.end();
        });
      });
    });
  }
docs: Listen the CONNECTION method and forward the https request to internal https server