Any example code of tls Network.framework implementation

Are you trying to implement TLS over TCP? Or UDP? Or some other transport?

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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
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That is TCP based.

Cool. Network framework has excellent support for TLS over TCP. Are you working in Swift? Or a C-based language?

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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
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It is swift based one.

It is swift based one.

Wow, you’re making your life really easy (-: Network framework supports TCP and TLS-over-TCP in virtually the same way; all you need to do is change the NWParameters that you use to construct the connection:

Code Block  
let c1 = NWConnection(host: "example.com", port: 80, using: .tcp)
let c2 = NWConnection(host: "example.com", port: 443, using: .tls)

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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
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Thanks for the suggestion.
Is there any server side tcp tls usage example?

Is there any server side tcp tls usage example?

It’s largely the same except that you construct your listener with the TLS parameters rather than the connection, and the connections spawned by the listener then inherit that TLS configuration. See this post for info on how to set up TLS options.

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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
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Code Block 
let c1 = NWConnection(host: "example.com", port: 80, using: .tcp)let c2 = NWConnection(host: "example.com", port: 443, using: .tls)

How about the usage when I use NetworkExtension?
Thanks in advance.

How about the usage when I use Network Extension?

In general a Network Extension provider can use any TCP/IP it wants. The NWTCPConnection and NWUDPSession APIs are tailored for use within that environment but your provider can use any TCP/IP API it wants. This includes both BSD Sockets and the Network framework. For example, many NE VPN providers use BSD Sockets for their VPN transport.

However, the NE provider environment does how its own unique restrictions, mostly centred around the NE infrastructure that prevents VPN loops. I see you’ve opened multiple other threads with the NetworkExtension tag and I’ll let Matt respond to those in that context.

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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
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Thank you Eskimo.