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AI-generatedInvalid handshake error when Socket.IO v4 server receives v3 client connection
Invalid handshake error When a Socket.IO server running major version 4 accepts a connection from a client using major version 3, the handshake process aborts and the server records an error commonly described as "Invalid handshake". The client side emits an error event and the socket disconnects. The precise goal is to determine which version‑compatibility
socketio