How to access session in express, outside of the req?

Question

I know that I can use

function(req, res) {     req.session } 

using express. However I need to access the session outside of the response function. How would I go about doing that?

I'm using socket.io to pass information for adding posts and comments. So when I receive the socket.io message on the server-side, I need to verify the person posting the information by using the session. However since this is being done via socket.io there is no req/res.

Answer 1

I think I have a different answer.

code:

var MongoStore = require('connect-mongo')(session); var mongoStore = new MongoStore({     db:settings.db,            //these options values may different     port:settings.port,     host:settings.host }) app.use(session({     store : mongoStore     //here may be more options,but store must be mongoStore above defined })); 

then you should define a session key at req,just like :

code:

req.session.userEmail; 

finally,you can get it this way:

code:

var cookie = require("cookie"); //it may be defined at the top of the file io.on("connection",function(connection){   var tS = cookie.parse(connection.handshake.headers.cookie)['connect.sid'];  var sessionID = tS.split(".")[0].split(":")[1];  mongoStore.get(sessionID,function(err,session){       console.log(session.userEmail);  }); } 

I had test it yesterday, it worked well.

Answer 2

Using socket.io, I've done this in a simple way. I assume you have an object for your application let's say MrBojangle, for mine it's called Shished:

/**  * Shished singleton.   *  * @api public  */ function Shished() { };   Shished.prototype.getHandshakeValue = function( socket, key, handshake ) {                               if( !handshake ) {         handshake = socket.manager.handshaken[ socket.id ];                                              }     return handshake.shished[ key ];                                                                 };                                                                                                    Shished.prototype.setHandshakeValue = function( socket, key, value, handshake ) {                        if( !handshake ) {         handshake = socket.manager.handshaken[ socket.id ];                                              }     if( !handshake.shished ) {         handshake.shished = {};                                                                          }     handshake.shished[ key ] = value;                                                                }; 

Then on your authorization method, I'm using MongoDB for session storage:

io.set('authorization', function(handshake, callback) {     self.setHandshakeValue( null, 'userId', null, handshake );     if (handshake.headers.cookie) {         var cookie = connect.utils.parseCookie(handshake.headers.cookie);         self.mongoStore()         .getStore()         .get(cookie['connect.sid'], function(err, session) {             if(!err && session && session.auth && session.auth.loggedIn ) {                 self.setHandshakeValue( null,                             'userId',                             session.auth.userId,                             handshake );             }         });     } 

Then before saving a record in the model, you can do:

model._author = shished.getHandshakeValue( socket, 'userId' );