Socket.io在Firefox和Chrome上不起作用，但在Safari上却完美

Question

我正在为小型多人游戏设置排行榜的网络套接字。

我尝试过io.configure（），但是最新版本中已经没有了。

var app = require('http').createServer(handler)
var io = require('socket.io')(app);
var fs = require('fs');

app.listen(process.env.PORT || 4000);

function handler (req, res) {
  fs.readFile(__dirname + '/index.html',
  function (err, data){
    if (err) {
      res.writeHead(500);
      return res.end('Error loading index.html');
    }

    res.writeHead(200);
    res.end(data);
  });
}

var resultsCache = {};
var clientCache = {};

io.on('connection', client => { 

    client.on('joinRoom', clientData => {
        const roomKey = clientData["key"];
        const name = clientData["name"];
        if (roomKey in resultsCache) {
            if ((name in resultsCache[roomKey])){
                client.emit("nameError", "Username already exists");
            }else {
                resultsCache[roomKey][name] = {}
                client.emit("done")
            }
        }else{
            resultsCache[roomKey] = {};
            resultsCache[roomKey][name] = {};
            clientCache[roomKey] = {}
            client.emit("done")
        }
        console.log(resultsCache);
    })


    // room - [{name:{game1:0, game2: 1}}, {name: {game2}}, {}]

    client.on("score", scoreData => {
        const roomKey = scoreData["key"];
        const name = scoreData["name"];
        const game = scoreData["game"]
        console.log(roomKey, name, game)
        console.log(resultsCache)

        resultsCache[roomKey][name][game] = scoreData["score"];
        console.log(resultsCache)

        if (game in clientCache[roomKey]){
            clientCache[roomKey][game].push(client)
        } else {
            clientCache[roomKey][game] = [client]
        }

        var results = {}
        for (var i in resultsCache[roomKey]){
            const scoreCard = resultsCache[roomKey][i]
            if (game in scoreCard){
                results[i] = scoreCard[game]
            }
        }
        console.log(results)
        var sortedArr = Object.keys(results).map(function(key) {
            return [key, results[key]];
        });

        // Sort the array based on the second element
        sortedArr.sort(function(first, second) {
            return second[1] - first[1];
        });

        var sortedDicts = []

        for (var i in sortedArr){
            var l = {}
            l['name'] = sortedArr[i][0]
            l['score'] = sortedArr[i][1]
            sortedDicts.push(l)
        }
        //Result
        console.log(sortedDicts);
        // client.emit("results", sortedDicts);
        for (var i in clientCache[roomKey][game]){
            var clientUpdate = clientCache[roomKey][game][i]
            clientUpdate.emit("results", sortedDicts)
        }
    })


    // deleting client data on exit
    client.on("exit", data=>{
        const roomKey = data["key"];
        const name = data["name"];
        console.log(resultsCache);
        console.log(clientCache);
        console.log(roomKey, name)
        delete resultsCache[roomKey][name];
        for (var i in clientCache[roomKey]){
            if (client in clientCache[roomKey][i]){
                var index = clientCache[roomKey][i].indexOf(client);
                delete clientCache[roomKey][i][index];
            }
        }
        console.log(resultsCache);
        console.log(clientCache);
    })
});

在safari上，它运行得很好，但在chrome和Firefox上却不能。 在chrome中，它只会崩溃，而在Firefox中，如果有多个用户，则只会处理一个用户。