Make HTTPMethod Sendable

[bestwnh]

Goals ⚽

Just like the #3816 but for HTTPMethod.

[jshier]

Thanks. I'll audit the other simple types.

[bestwnh]

@jshier Maybe it's time to begin the process to fully support concurrency? 👀

[jshier]

Full support is impossible until Apple's frameworks themselves fully support it, but Alamofire is generally thread-safe, even if it can't always provide Sendable conformances. For the most part I can add Sendable support to Alamofire's simple types, and I already declare such support as @unchecked for the Request types (which are manually thread-safe through locks and controlled queue usage), but complex types like AFError can't truly be Sendable until the various system types it captures are themselves Sendable. In the meantime, an audit of the simple public types should be possible.

[bestwnh]

Thanks for your explanation. I used to think that only UIKit is lack of concurrency support. Alamofire only use Foundation so I though it would be easier. I believe Alamofire is thread-safe. But I still want to kill all warning.

[jshier]

Sure. Feel free to report any others but remember, you can use @preconcurrency import Alamofire to silence them in general.