Node.js express routes中socket.io服务器端和客户端对象的作用域
在我的app.js中,我有Node.js express routes中socket.io服务器端和客户端对象的作用域,node.js,express,socket.io,Node.js,Express,Socket.io,在我的app.js中,我有 var app = express(); var serv = http.createServer(app); var io = require('socket.io').listen(serv); io.sockets.on('connection', function(socket) { //some code here } var SessionSockets = require('session.socket.io'), sessionSock
var app = express();
var serv = http.createServer(app);
var io = require('socket.io').listen(serv);
io.sockets.on('connection', function(socket) {
//some code here
}
var SessionSockets = require('session.socket.io'),
sessionSockets = new SessionSockets(io, express_store, cookieParser);
sessionSockets.on('connection', function (err, socket, session) {
//set up some socket handlers here for the specific client that are
//only called when a client does a socket.emit.
//These handlers have access to io, sessionSockets, socket, session objects.
}
express routes如何在处理post/get后访问特定客户端的套接字引用,该post/get不是由客户端
socket.emit触发的,而是由客户端post/get触发的。查看路由中的socket.io服务器(io/sessionSockets)/客户端(socket)
对象的最佳方法是什么,这样我就可以轻松地获取此客户端的套接字引用 最好的方法是使用socket.io
授权设置,尽管模块session.socket.io
是专门为此目的创建的。每次套接字建立连接时,都会存储握手数据(尽管我听说FlashSocket不会传递浏览器cookies)。这就是它的外观(类似地写在您使用的模块中):
您可以在这里解析cookie,然后根据cookie名称存储对该套接字的引用。因此,您可以将其添加到授权设置中:
var data = handshakeData;
if (data.headers.cookie) {
//note that this is done differently if using signed cookies
data.cookie = parseCookie(data.headers.cookie);
data.sessionID = data.cookie['express.sid'];
}
然后,在侦听连接时,按会话标识符存储客户端:
var clients = {};
io.sockets.on('connection', function(socket) {
//store the reference based on session ID
clients[socket.handshake.sessionID] = socket;
});
当您在Express中收到HTTP请求时,可以按如下方式获取该请求:
app.get('/', function(req, res) {
//I've currently forgotten how to get session ID from request,
//will go find after returning from school
var socket = clients[sessionID];
});
这三个步骤帮助我解决了这个问题。这也唯一地标识了选项卡,因为这是我的需求之一
连接时,使用socket.id
加入,然后使用将socket.id
发送回客户端
io.sockets.on('connection', function(socket) {
socket.join(socket.id);
socket.emit('server_socket_id', {socket_id : socket.id});
}
socket.on('server_socket_id', function(data){
//assign some global here which can be sent back to the server whenever required.
server_socket_id = data.socket_id;
});
客户端使用接收发出事件
io.sockets.on('connection', function(socket) {
socket.join(socket.id);
socket.emit('server_socket_id', {socket_id : socket.id});
}
socket.on('server_socket_id', function(data){
//assign some global here which can be sent back to the server whenever required.
server_socket_id = data.socket_id;
});
在app.js
中,我像这样获取相应的套接字并将其传递给路由
app.post('/update', function(req, res){
var socket_id = req.body.socket_id;
route.update(req, res, io.sockets.in(socket_id).sockets[socket_id]);
});
这需要手动维护客户端hashmap。这里提到了更多细节手动管理客户机有什么问题?您愿意迭代客户端列表并单独匹配cookies吗?谢谢您的输入。使用socket.join(socket.handshake.sessionID)
创建特定于会话的命名空间将在客户端打开/关闭浏览器时自动维护哈希映射。但是,我想以一种独特的方式标识多个选项卡。会话ID在选项卡中不是唯一的。