node.js - In Socket.io, how to get the stored cookie information? -

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in node application using express, have stored cookie information. need stored cookie information in socket.io. how can this?

    app.use(function (req, res, next) {          res.cookie('cookiename','1', { maxage: 50000, httponly: true });     });      io.sockets.on('connection', function (socket) {       //here need access cookie.how can      });

finally found answer.the below code cookie information. 

     io.sockets.on('connection', function (socket) {            var cookie=socket.handshake.headers['cookie'];       });

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