Socket IO using express session - socket.request.res undefined
sessionMiddleware() function proposed in many sources worked fine for me:
io.use(function(socket, next) { sessionMiddleware(socket.request, socket.request.res, next);});with web socket.io-client <=> socket.io node.js server until I added socket.io-client-cpp application to the chain - server crashed on socket.io-client-cpp connection with above error:
TypeError: argument res is requiredin sessionMiddleware() function. People suggest to remove socket.request.res from the middleware completely:
- https://stackoverflow.com/a/29448630/630169
- https://github.com/socketio/socket.io/issues/2971#issuecomment-326084664
and replace with {}. However think it could be changed to slightly better variant in case somebody still need and use socket.request.res:
io.use(function(socket, next) { sessionMiddleware(socket.request, socket.request.res || {}, next);});This works fine for me!