Swift's Foundation on Linux is missing URLSession?

Using Swift
1

Maybe I'm going blind but I notice that when import Foundation on Linux, I don't seem to receive URLSession along with the rest of Foundation.

Wasn't the goal of adding Linux/Windows compatibility to allow some network programming etc., which would require URLSession?

2

On Linux the Foundation framework had the XML and network components split out due to large dependencies. You can get URLSession by importing FoundationNetworking.

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3

For using URLSession you’re suggested to add the following snippet:

#if canImport(FoundationNetworking)
import FoundationNetworking
#endif

This not only works on Windows/Linux, but also retains compatibility with the upcoming new Foundation.

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4

Note that all the async goodness is still missing on !Apple. There‘s an issue (among dozens of others) and a pull request for it in GitHub, but don‘t expect any progress.

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5

To my knowledge async/await does work on Linux (e.g. "modern" Vapor applications use it), and the according pull request to make it work on Windows (x86_64) for non-trivial cases is only two weeks old.

6

I'm referring to Foundation(Networking)'s URLSession, which got a number of async/await-enabled calls (like download, upload, etc.) at the time Swift 5.5 was released in September 2021. 17 months later they are still not present on !APPLE and the corresponding issues / pull requests are lingering.

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