Node.js中聊天服务器的Redis发布/订阅

Z时代
2024-01-10
分类：问答

我正在尝试使用Redis Cookbook示例：

var http = require('http'),
io = require('socket.io')
fs = require('fs'),
redis = require('redis'),
rc = redis.createClient(9189, "pike.redistogo.com");
rc.auth("passwd", function() {
    console.log("Connected! to redistogo!");});
rc.on("connect", function() {
    rc.subscribe("chat");
    console.log("rc connect event");
});

我在这里取得了成功，但从未得到“消息”。

rc.on("message", function (channel, message) {
 console.log("Sending: " + message);
 socketio.sockets.emit('message', message);
});
webpage = http.createServer(function(req, res){
console.log('webpage request starting...');
fs.readFile('./index.htm', function(error, content) {
    if (error) {
        res.writeHead(500);
        res.end();
    }
    else {
        res.writeHead(200, { 'Content-Type': 'text/html' });
        res.end(content, 'utf-8');
     }
 });
 });
 webpage.listen(7777);

我的客户端index.htm是这个

<!docttype html>
<html lang="en">
<head>
    <script src ="https://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js">     </script>
       <script src="http://www.heaphash.com:7777/socket.io/socket.io.js"></script>
       <script>
        var socket = io.connect('www.heaphash.com', { port: 7777});
            socket.on('message', function(data){
               var li = new Element('li').insert(data);
               $('messages').insert({top: li});
           }
        </script>
        <meta charset="utf-8">
        <title>Chat with Redis</title>
 </head>
 <body>
        <ul id="messages">
            <!-- chat messages go here -->
        </ul>
        <form id="chatform" action="">
         <input id="chattext" type="text" value="" />
         <input type="submit" value="Send" />
        </form>
        <script>
                $('#chatform').submit(function(){
                        socket.emit('message', $('chattext').val());
                        $('chattext').val(""); //cleanup the field
                        return false;
                });
        </script>
</body>
</html>