small socket.io demo

REQUIREMENTS This is just a proof of concept, everything is harcoded. No database interaction, just message exchanges. You will have to program this on your own VM/Machine. It just need the ability to copy paste the JSON messages and click Send to send a message to the server, just like here: [login to view URL] LIBRARY: Server side - [login to view URL] Library: [login to view URL] Client side - Javascript SPECS: Server binds on port 80 Keep alive required Must use [login to view URL] Same credentials can be reused from another client No database interaction, all hardcoded Message reception by clients must be protected against code injection If anything goes wrong the server sends this message: ['type':'LOGIN','result':'ERR_INVMSG' ] Server calls a function that validates user/pwd, Implements three hard coded accounts for now: (111111 / 222222), (333333 / 444444) and (555555 / 666666) Account 111111 is treated as an admin Account 333333 and 444444 are treated as regular users Account 222222 and 333333 are in the <gameofthrones> group Client sends the following to login: ['type':'LOGIN','username':'333333','password':'444444'] Server responds with either: ['type':'LOGIN','result':'OK','group':'gameofthrones'] // Part of this group ['type':'LOGIN','result':'OK','group':'ADMIN'] // Part of admin group ['type':'LOGIN','result':'OK','group':'222222'] // Part of no group, group is own username ['type':'LOGIN','result':'ERR_INVCRED'] // Invalid credentials ['type':'LOGIN','result':'ERR_TOOMANY'] // If credentials are not good 10 times in a row A client loggedin as an admin can send messages to one client, a group of clients or all clients. (A client can only send to the group he is in) ['type':'SEND','user':'111111','message':'Hello, world!'] // User sending a message to another user ['type':'SEND','user':'ALL','message':'Hello, world!'] // Admin sending to everyone ['type':'SEND','user':'GROUP','msg':'Hello, world!'] // User sending to his own group Prior to exit and disconnect, client sends the following message: ['type':'LOGOUT'] Admins can send this message at any time to disconnect one or several clients: ['type':'LOGOUT','user':'GROUP','group':'gameofthrones'] ['type':'LOGOUT','user':'ALL'] ['type':'LOGOUT','user':'444444']