Is this a game server node.js?
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Socket.io. The nuiser will take its parameters from the base and check the xash, further with the base work only in exceptional cases, such as changing the parameters of the important ones, but the main parameters (mode coordinates) will be taken from the variable node.js on the server and only recorded in the base when the connection breaks. Is that a server? The only thing that checks Hash is when it's connected? Can't we replace the laser through the straw?
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If you were making a bank application, I'd say it's not safe. Because theoretically, intercepting TCP into some intermediate routers is possible. But I don't think anyone's gonna be so excited about the toys.
Something tells me that you're on the base and you're checking with a ready-made hanger sent by a client. If it is not based on a pre-referencing to the customer of an accidental number and a hexa generation based on the user ' s and this number, problems will be greater with him than with interception of sessions.
If you're all so doubtful, you'll have to make a protocol once in N minutes to ask a client for a new hesh.