Make nats.swift work cross platform.

[benbenbenbenbenben]

Hi,

I'm opening this for discussion as I'm currently experimenting with NATS on iOS & Linux. It requires minimal changes to make this repo build on Linux, but most of those changes are in dependencies:

Jarema/swift-nuid#1

nats-io/nkeys.swift#9

Each pull request, those above and this one include a devcontainer file to test the Linux build. It is minimal but I can appreciate if it is considered clutter. Nevertheless, the changes required are minimal.

[stalkermv]

Any updates here?

[robinhayward]

Need this please 🚀🚀🚀

[robinhayward]

Thanks @benbenbenbenbenben

[Jarema]

Will get back here shortly. Sorry for the delay!

[Jarema]

As both nuid and nkeys were updated, please update the PR to use those new releases instead @benbenbenbenbenben

[morenonicolelli]

Thank you @benbenbenbenbenben!! I was searching this solution!! I hope this PR will be integrated asap

[benbenbenbenbenben]

Sorry about that delay there @morenonicolelli - all dependencies restored to the original repos and we're good to go!

[Jarema]

Some small nits.

[benbenbenbenbenben]

Got em'

[avmwilliams]

Hi folks. I could really use this update (need to deploy server-side swift to container on linux), and wondering if there's a plan to merge the PR soon? Looks like it's almost good to go? Thanks to all for this great package.

[Copilot]

Pull Request Overview

This pull request adds cross-platform support to nats.swift, enabling it to build and run on Linux in addition to macOS and iOS. The changes are minimal and focused on platform-specific compatibility requirements.

• Adds conditional imports for FoundationNetworking (required for URLSession on Linux)
• Implements conditional crypto library imports (CryptoKit on Apple platforms, swift-crypto on Linux)
• Updates dependency versions to support cross-platform builds (nkeys.swift 0.2.0, swift-nuid 0.3.0)
• Adds swift-crypto as a Linux-specific dependency for JetStream
• Removes unused import Combine statement
• Includes devcontainer configuration for Linux build testing

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
Tests/NatsTests/Unit/JwtTests.swift	Adds conditional import of FoundationNetworking for Linux URLSession support
Sources/Nats/NatsConnection.swift	Adds conditional import of FoundationNetworking for Linux URLSession support
Sources/JetStream/JetStreamContext.swift	Removes unused Combine import
Sources/JetStream/Consumer.swift	Adds conditional crypto imports (CryptoKit for Apple platforms, Crypto for Linux)
Sources/BenchmarkPubSub/main.swift	Updates async iteration syntax, likely for Swift 6 concurrency requirements
Package.swift	Updates dependency versions and adds swift-crypto as Linux-conditional dependency for JetStream
.devcontainer/devcontainer.json	Adds devcontainer configuration with Swift 6.0 for Linux development and testing

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[avmwilliams]

Hi @Jarema - Many thanks for picking this up again and for posting the review. I'm really keen to use this change if we can make it stick.

Hi @benbenbenbenbenben - I appreciate this sits with you and it's been a while since you raised. If you're able to find time to action this one small review comment that would be absolutely amazng. If not, (which I totally get if you've moved on to other things!), let me know and if you're both happy, perhaps I can create a new PR/branch to take over the update and apply the changes so we can finalise?

Thank you both - totally love this package and to be able to use it on Linux would be a game changer for me. Happy to help, just let me know how to do that for the best.

Appreciate the efforts!

[Jarema]

@avmwilliams let's give @benbenbenbenbenben few days, and in case of lack of time, let's transfer the work to you on new PR. It is quite close to be done.
I really appreciate the initiative @avmwilliams !

[avmwilliams]

Of course, no pressure intended. Just an offer of help :)

[benbenbenbenbenben]

It's good to go as far as I'm concerned.