节点聊天服务器:只有第一台计算机可以看到所有人

Question

第一台计算机能够看到每个人进入房间的日志，但是新的计算机看不到之前发生了什么。

服务器

    var clientMessages = {};
socket.on("message", function (data) {
  var parsed = JSON.parse(data);
console.log("parsed id " + parsed.id);
    if (parsed.type === "join") {
        // A new client has joined.
        // First, send them all the changes for all the current synths that are in the chat.
         var jsonstringy = JSON.stringify({ type: "history", value: clientMessages});
         socket.send(jsonstringy);

        // Now create a new record to store all changes sent to this synth.
       clientMessages[parsed.id] = [parsed];
       console.log(clientMessages);
    } else if (parsed.type === "leave") {
        delete clientMessages[parsed.id];
    } else {
    clientMessages[parsed.id].push(parsed);
    }
});

表示push(parsed);有时会抛出错误并使服务器崩溃。

前端位于此处。

Answer 1

您只向接收消息的套接字发送数据;您需要对所有套接字进行广播，语法为:

var srv = require('http').createServer().listen(8080);
var io  = require('socket.io')(srv);
function sendToAll(topic, data) {
  io.sockets.in(topic).emit(topic, data); // <-- this sends the data to all sockets subscribed to the topic
}

当您收到消息时，请记住将套接字订阅到主题/消息:

socket.join(topic);