socket.io：客户端发出的回调永远不会触发

看来您已经改变了一些逻辑，请尝试…

var io = require('socket.io').listen(80);io.sockets.on('connection', function (socket) {    socket.emit("getSomeData",{data: "some random data"});});

和客户…

<script src="http://localhost/socket.io/socket.io.js"></script><script>  var socket = io.connect('http://localhost');  socket.on("getSomeData", function(data) {      console.log(data);  });</script>

编辑：

var io = require('socket.io').listen(80);io.sockets.on('connection', function (socket) {    socket.on("getSomeData", function(name,fn) {        fn({data: "some random data"});    });});

客户

<script src="http://localhost/socket.io/socket.io.js"></script><script>  var socket = io.connect('http://localhost');  socket.emit("getSomeData", function(data) {      console.log(data);  });</script>