问题已解决

Question

你假设我们有两个注册用户，分别是User1和User2，两者都登录到系统，现在User1想要向User2发送消息，发送消息给他后，我的nodejs服务器说User2没有连接，当User2想要发送消息给User1我得到这个通知哪个User1没有连接，但是他们两个用户都已连接，

现在

User1只能向自己发送消息
User2只能向自己发送消息

但他们无法向其他用户发送消息

var socket      = require('socket.io'),
    express     = require('express'),
    app         = express(),
    server      = require('http').createServer(app),
    io          = socket.listen(server),
    port        = process.env.PORT || 3000,
    redis       = require("redis"),
    redisClient = redis.createClient();

var io_redis    = require('socket.io-redis');
io.adapter(io_redis({host: 'localhost', port: 6379}));

require('sticky-socket-cluster/replace-console')();

var options = {
    workers     : require('os').cpus().length,
    first_port  : 8000,
    proxy_port  : 3000,
    session_hash: function (req, res) {
        return req.connection.remoteAddress;
    },

    no_sockets: false
};

require('sticky-socket-cluster')(options, start);

function start(port) {

    io.sockets.on('connection', function (socket) {
        socket.on('login', function (data) {
            console.log(data.username);
            login(data.username, data.password, function (success, value) {
                if (success) {
                    redisClient.exists(data.username, function (err, doesExist) {
                        if (err) return;

                        if (!doesExist) {
                            redisClient.set(data.username, socket.id, function (err, res) {
                                redisClient.set(data.username, socket.id);
                            });
                        }
                        else {
                            redisClient.del(data.username);
                            redisClient.set(data.username, socket.id, function (err, res) {
                                redisClient.set(data.username, socket.id);
                            });
                        }

                    });
                    socket.emit('login', {result: true, id: value});
                } else {
                    socket.emit('login', {result: false});
                }
            });
        });

        socket.on('requestMoney', function (data) {

            redisClient.get(data.fromUsername, function (err, socketId) {
                if (io.sockets.connected[socketId]) {
                    log.info('message to '+ data.fromUsername + ' sent');
                    io.sockets.connected[socketId].emit('message', {message: 'Hey !!'});
                } else {
                    log.info(data.fromUsername + ' NOT Login');
                }
            });

        });
    });

    server.listen(port, function () {
        console.log('Express and socket.io listening on port ' + port);
    });
}

Answer 1

问题已解决

而不是

io.sockets.connected[socketId].emit(''));

我使用此代码：

socket.broadcast.to(socketId).emit(''));

现在我可以向特定用户发送消息，从web到Android登录用户，从android设备发送到Web登录用户

我的Html测试代码给任何想要了解更多内容的人

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>
        Document
    </title>
    </meta>
    <script src="https://cdn.socket.io/socket.io-1.4.5.js"></script>
    <script src="http://code.jquery.com/jquery-latest.min.js"></script>
    <script type="text/javascript">
        $(document).ready(function () {
            $('#login').click(function () {
                socket.emit('login', {username: 'mahdi', password: 'a'});
            });

            $('#mesage').click(function () {
                socket.emit('requestMoney', {fromUsername: 'a'});
            });
        });
    </script>
    <script>
        var socket = new io.connect('http://192.168.1.35:3000', {
            transports: ['websocket']
        });
        socket.on('connect', function () {
            console.log('connected!');
        });
        socket.on('message', function (message) {
            console.log("hello ::::::::" + message);
        });
        socket.on('success', function (data) {
            console.log(data);
        });
    </script>
</head>
<body>
<h3 id="login">login</h3>

<h3 id="mesage">mesage</h3>
</body>
</html>

Nodejs只能向所有者邮件发件人发送邮件

1 个答案:

问题已解决