websocket proxy,what if the sever reject the connect with status other than 101

Created by: kd128

it happen when sever dothing like

var http = require('http');
var server = http.createServer(function (req, res) {
......//do normal request
}).listen(1337);


var accept  = function(request){
  if(ok){
    return true;
  } else {
    return false;
  }
}

server.on('upgrade',function (request, socket, head) {
      if(!accept(request)){//here the http-proxy will not work!
        socket.write("HTTP/1.1 406 Not Acceptable\r\n");
        socket.write("Connection: close\r\n");
        socket.write("\r\n");
        socket.end();
        return;
      }
       ......//do websocket request
 });