Even more, I added authentication for higher proof of socket, to make the application more secure. io connections. Thus, only authenticated users can make a WebSocket connection to the server, making it impossible for unauthorized users to join the chat groups.
I integrated JWT tokens with NextAuth. js, which sends the token from the client to the server at the time of the WebSocket connection handshake. The token is verified on the server side which confirms if a user is actually authenticated and the request is valid and based on that user can connect to the respective chat group(s). If the token is missing or invalid, then refuse the connection.
By introducing background verification to users accessing chat rooms, only those who have successfully passed verification will be allowed in, safeguarding private conversations and details. This not only strengthens the security of the chat application but also helps protect user anonymity and information.
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