Upgrade grpc-swift-nio-transport to 2.9.0 and remove HTTP2ConnectBuff…

[adityabagchi24]

Upgrade grpc-swift-nio-transport to 2.9.0 and remove HTTP2ConnectBufferingHandler workaround

Release 2.9.0 of grpc-swift-nio-transport fixes the HTTP/2 initialization race that required a HTTP2ConnectBufferingHandler for the vminitd API. This upgrades the dependency and eliminates the workaround.

Fixes #776

Changes

Package.swift

• Upgraded grpc-swift-nio-transport from 2.4.4 to 2.9.0

Vminitd.swift

• Replaced the ClientBootstrap + HTTP2ConnectBufferingHandler workaround with the new HTTP2ClientTransport.WrappedChannel.wrapping(config:serviceConfig:) API using withCheckedThrowingContinuation
• Changed init from throws to async throws
• Updated imports: GRPCNIOTransportHTTP2 and NIO instead of GRPCNIOTransportCore + NIOCore + NIOPosix

VZVirtualMachineInstance.swift

• Updated two Vminitd(…) call sites to use try await

ContainerTests.swift

• Updated Vminitd(…) call site to use try await

Removed

• HTTP2ConnectBufferingHandler.swift — no longer needed

[jglogan]

@adityabagchi24 I think you need to run swift package resolve down in the vminitd directory and push the change:

error: an out-of-date resolved file was detected at /Users/runner/actions-runner/_work/containerization/containerization/vminitd/Package.resolved, which is not allowed when automatic dependency resolution is disabled; please make sure to update the file to reflect the changes in dependencies. Running resolver because requirements have changed.

[adityabagchi24]

@jglogan I ran swift package resolve in the vminitd/ directory and pushed the updated Package.resolved. The vminitd sub-package now pins grpc-swift-nio-transport at 2.9.0, matching the root package.

[jglogan]

Ready to go. We're going to defer approve/merge until after container 1.1.0.

[adityabagchi24]

@jglogan Thank you for the update! Sounds good to me. I completely understand deferring the approval and merge until after container 1.1.0. I appreciate your time and consideration throughout this process, and I’m looking forward to the merge after the release. Please let me know if I can help with anything in the meantime.