【发布时间】:2014-09-14 12:27:46
【问题描述】:
所以,每次我刷新页面时,sockjs 似乎都在创建一个新连接。
我在每个 channel.onmessage 上将每条消息保存到我的 mongodb,所以如果我刷新页面 7 次并发送一条消息,我会将相同内容的 7 条消息保存到我的 mongodb 中。
这是非常有问题的,因为当我进入聊天室时检索这些消息时,查看日志时,我会看到一堆重复的消息。
我想跟踪所有“活动”的连接,如果用户尝试建立另一个连接,我希望能够从服务器端强制关闭旧连接,因此只有 1 个连接一次收听每条消息
我该怎么做?
var connections = {};
//creating the sockjs server
var chat = sockjs.createServer();
//installing handlers for sockjs server instance, with the same url as client
chat.installHandlers(server, {prefix:'/chat/private'});
var multiplexer = new multiplexServer.MultiplexServer(chat);
var configChannel = function (channelId, userId, userName){
var channel = multiplexer.registerChannel(channelId);
channel.on('connection', function (conn) {
// console.log('connection');
console.log(connections);
connections[channelId] = connections[channelId] || {};
if (connections[channelId][userId]) {
//want to close the extra connection
} else {
connections[channelId][userId] = conn;
}
// }
// if (channels[channelId][userId]) {
// conn = channels[channelId][userId];
// } else {
// channels[channelId][userId] = conn;
// }
// console.log('accessing channel! ', channels[channelId]);
conn.on('new user', function (data, message) {
console.log('new user! ', data, message);
});
// var number = connections.length;
conn.on('data', function(message) {
var messageObj = JSON.parse(message);
handler.saveMessage(messageObj.channelId, messageObj.user, messageObj.message);
console.log('received the message, ', messageObj.message);
conn.write(JSON.stringify({channelId: messageObj.channelId, user: messageObj.user, message: messageObj.message }));
});
conn.on('close', function() {
conn.write(userName + ' has disconnected');
});
});
return channel;
};
【问题讨论】:
标签: javascript node.js websocket chat sockjs