How to get user session data manually for socket.io?

Hello, I'm using socket.io and koa-session. How can I get user session information (same as ctx.state.user in koa middleware) in socket context, where I have only cookie session id?

No repository file or test is named. Start by reviewing the session middleware's documented context behavior and how the socket.io integration is expected to access it; done requires a clear, supported answer for retrieving user session data from the socket context when only the session cookie is available.

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