Express+socket.io 缺乏、安全感 2022-06-04 00:48 161阅读 0赞 服务器（app.js） var app = require('http').createServer(handler) var io = require('socket.io')(app); var fs = require('fs'); app.listen(80); 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); }); } io.on('connection', function (socket) { socket.emit('news', { hello: 'world' }); socket.on('my other event', function (data) { console.log(data); }); }); 客户端（index.html） <script src="/socket.io/socket.io.js"></script> <script> var socket = io('http://localhost'); socket.on('news', function (data) { console.log(data); socket.emit('my other event', { my: 'data' }); }); </script> ＃＃ function onConnect(socket){ // sending to the client 发送到客户端 socket.emit('hello', 'can you hear me?', 1, 2, 'abc'); // sending to all clients except sender发送给除发送方之外的所有客户端 socket.broadcast.emit('broadcast', 'hello friends!'); // sending to all clients in 'game' room except sender发送到“游戏”房间的所有客户端，除了发送者 socket.to('game').emit('nice game', "let's play a game"); // sending to all clients in 'game1' and/or in 'game2' room, except sender发送到“game1”和/或“游戏2”房间的所有客户端，除了发送者 socket.to('game1').to('game2').emit('nice game', "let's play a game (too)"); // sending to all clients in 'game' room, including sender发送到“游戏”房间的所有客户端，包括发送者 io.in('game').emit('big-announcement', 'the game will start soon'); // sending to all clients in namespace 'myNamespace', including sender发送到名称空间“myNamespace”的所有客户端，包括发送者 io.of('myNamespace').emit('bigger-announcement', 'the tournament will start soon'); // sending to individual socketid (private message)发送到单个的socketid(私有消息) socket.to(<socketid>).emit('hey', 'I just met you'); // sending with acknowledgement发送和确认 socket.emit('question', 'do you think so?', function (answer) {}); // sending without compression发送不压缩 socket.compress(false).emit('uncompressed', "that's rough"); // sending a message that might be dropped if the client is not ready to receive messages发送消息，如果客户端不准备接收消息，可能会被删除 socket.volatile.emit('maybe', 'do you really need it?'); // sending to all clients on this node (when using multiple nodes)发送到该节点上的所有客户机(使用多个节点) io.local.emit('hi', 'my lovely babies'); };
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