问为什么机器人消息不能发送？

EN

var bot = new builder.UniversalBot(connector);

bot.dialog('/', function (session) {
  session.send('Alec said ' + session.message.text);
});
function status(request,reply){
 connector.listen(request.raw.req,request.raw.res);
 return reply("ok");
}
  if (useEmulator) {
   var restify = require('restify');
   var server = restify.createServer();
   server.listen(8080, function() {
     console.log('test bot endpont at http://localhost:8080/api/messages');
   });
   server.post('/api/messages', connector.listen());  
} else {
  module.exports = { default: connector.listen() }
}