Node.js 在http get请求上发出socket.io消息（在Express.js中）

在我的socket.io/express应用程序中，我希望能够向localhost:3000/send发出GET请求，并让它向所有打开的连接发送消息。但是，此代码似乎不起作用：

var LISTENING_PORT = 1234;

var app = require('express')();
var http = require('http').Server(app);
var io = require('socket.io')(http);

//Example users
app.get('/messages', function(req, res){
  res.sendFile(__dirname + '/messages.html');
});

//Basket Reservation Namespace
var basket_reservation = io
  .on('connection', function(socket){
    socket.on('message', function(message){
      console.log('Received connection from user: ' + message);
      socket.emit('message', 'Connection started.');
    });

    app.get('/send', function(req, res){
      console.log('sending message to all');
      socket.emit('message', 'Message from GET /send');
      res.send('Message sent.');
    });
  });

http.listen(LISTENING_PORT, function(){
  console.log('listening on *:' + LISTENING_PORT);
});

特别是行socket.emit（'message'，'messagefrom GET/send'）；不起作用。上面和下面的线路都会被呼叫

以下是客户：

<script src="https://cdn.socket.io/socket.io-1.2.0.js"></script>
<script src="http://code.jquery.com/jquery-1.11.1.js"></script>
<script type="text/javascript">
  var socket = io('http://localhost:1234/');
  socket.emit('message', 'hello');
  socket.on('message', function(msg){
    $('#messages').append($('<li>').text(msg));
  });
</script>

<h1>User #1</h1>


<ul id="messages"></ul>

变量套接字=io（'http://localhost:1234/');
emit（'message'，'hello'）；
socket.on（'message'，函数（msg）{
$（“#消息”）.append（$（“
”）.text（msg））；
});
用户#1

我认为您的代码无法响应

/send

路由，因为您正在

io.on（'connection'）上异步声明它。

我建议在（'connection'）上的

io.on之外声明此项-我还没有运行我的代码-因此不确定它是否会运行：

//Basket Reservation Namespace
var basket_reservation = io
  .on('connection', function(socket){
    socket.on('message', function(message){
    console.log('Received connection from user: ' + message);
    socket.emit('message', 'Connection started.');
});

// Helper to send message (it uses closure to keep a reference to the io connetion - which is stored in basket_reservation in your code)
var sendMessage = function (msg) {
  if (basket_reservation && basket_reservation.connected) {
    console.log('sending message to all');
    basket_reservation.emit('message', 'Message from GET /send');
  }
};

// Broadcast message
app.get('/send', function(req, res){
  sendMessage(req.body.data);
  res.send('Message sent.');
});

我认为您的代码无法响应
/send
路由，因为您正在
io.on（'connection'）
上异步声明它

我建议在（'connection'）上的
io.on之外声明此项-我还没有运行我的代码-因此不确定它是否会运行：

//Basket Reservation Namespace
var basket_reservation = io
  .on('connection', function(socket){
    socket.on('message', function(message){
    console.log('Received connection from user: ' + message);
    socket.emit('message', 'Connection started.');
});

// Helper to send message (it uses closure to keep a reference to the io connetion - which is stored in basket_reservation in your code)
var sendMessage = function (msg) {
  if (basket_reservation && basket_reservation.connected) {
    console.log('sending message to all');
    basket_reservation.emit('message', 'Message from GET /send');
  }
};

// Broadcast message
app.get('/send', function(req, res){
  sendMessage(req.body.data);
  res.send('Message sent.');
});