Question

我在heroku端有一个node.js服务器，这是在localhost上工作但是当我提交到heroku时，应用程序崩溃了。

   'use strict';

const express = require('express');
const socketIO = require('socket.io');
const path = require('path');

const PORT = process.env.PORT || 3000;
const INDEX = path.join(__dirname, 'index.html');

const server = express()
  .use((req, res) => res.sendFile(INDEX) )
  .listen(PORT, () => console.log(`Listening on ${ PORT }`));

const io = socketIO(server);

io.on('connection', (socket) => {
  console.log('Client connected');
  socket.on('disconnect', () => console.log('Client disconnected'));
});


var app = express();
app.set('port', (process.env.PORT || 5000));

var bodyParser = require('body-parser')
app.use(bodyParser.json());

app.use(express.static(__dirname + '/public'))

app.post('/phpcallback', function(req, res) {
    var content = req.body;
    console.log('message received from php: ' + content.msg);
    //to-do: forward the message to the connected nodes.
    res.end(content.msg);
});

app.listen(app.get('port'), function() {
  console.log("Node app is running at localhost:" + app.get('port'))
});

应用程序需要侦听来自我的PHP服务器的POST请求，然后在js客户端向用户发出，代码在localhost上运行良好，但是当我提交并推送到heroku应用程序崩溃时。有谁知道这是什么问题？我是node.js和socket.io

的新手

Answer 1

尝试这样（改进的语法和一般用法）

var express = require('express');
var io = require('socket.io');
var path = require('path');
var PORT = process.env.PORT || 3000;
var INDEX = path.join(__dirname, 'index.html');
// Express & Middleware
var app = express();
var bodyParser = require('body-parser');
app.use(bodyParser.json());
// SocketIO
var server = require('http').createServer(app);
var io = require('socket.io')(server);
io.on('connection', function(){
  console.log('[socket]','client connected');
  socket.on('disconnect', () => console.log('[socket]','client disconnected'));
});
server.listen(PORT,function(){console.log("[SERVER] listening @ port:",PORT);});
//GET Routes
app.use(express.static(__dirname + '/public'))
app.get('/',function(req,res){res.sendFile(INDEX);});
//POST Routes
app.post('/phpcallback', function(req, res) {
  var content = req.body;
  if(content.msg){
    console.log('message received from php: ' + content.msg); //
    /*to-do: forward the message to the connected nodes.*/
    //io.sockets.on('forward',content.msg); //forward to ALL connected socket.io clients (requires client-side event)
    res.send(content.msg); //forward response with content.msg to the original request (only) of this route.
  }else{console.log('[/phpcallback] : missing message (content.msg)');}
});

如果您要将消息转发给所有连接的客户端socket.io：

，我看到了您的to-do

io.sockets.emit('your_event','your_message');

这可能会派上用场：SocketIO Emit CheatSheet

heroku节点js + socket.io listion来自php的POST

1 个答案: