CFNetwork secure connect issue.

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Created Jun ’21

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Does CFNetwork support TLS version 1.3 ?

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Answer 1

DTS Engineer OP

Apple

Jun ’21

That depends on what specific API you’re referring to:

If you’re using CFNetwork as a shortcut for the Foundation URL Loading System then, yes, it supports TLS 1.3.
If you’re referring to CFSocketStream, and anything layered on top of that, like NSStream and CFHTTPStream, then, no, these deprecated APIs don’t support TLS 1.3. Our advice in this case is that you move forward to Network framework.

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