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I am trying to set up a secure local websocket server on a mac using swift. I think I am able to get a non-secure server running (still untested). But I am unable to find any documentation that points to how to set up a secure connection (say uses TLS 1.2) if I have an ssl cert, an intermediate cert (both pem files) and the private key for that cert. Any insight would be great. Any code samples that show setting up a local secure websocket server that makes use of certificates and private keys would be even better.