mirror of
https://github.com/apple/container.git
synced 2026-09-13 03:05:42 +00:00
Danny Canter
bec1008f4d
I didn't like how we expose the asyncstream via a public connections field. We should have the type conform to AsyncSequence and then hide the underlying stream. This also stops listening on the stdio ports after we get the initial connection.
75 lines
2.2 KiB
Swift
75 lines
2.2 KiB
Swift
//===----------------------------------------------------------------------===//
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// Copyright © 2025 Apple Inc. and the Containerization project authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//===----------------------------------------------------------------------===//
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import Foundation
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#if os(macOS)
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import Virtualization
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#endif
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/// A stream of vsock connections.
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public final class VsockConnectionStream: NSObject, Sendable, AsyncSequence {
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public typealias Element = FileHandle
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/// A stream of connections dialed from the remote.
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private let connections: AsyncStream<FileHandle>
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/// The port the connections are for.
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public let port: UInt32
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private let cont: AsyncStream<FileHandle>.Continuation
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public init(port: UInt32) {
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self.port = port
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let (stream, continuation) = AsyncStream.makeStream(of: FileHandle.self)
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self.connections = stream
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self.cont = continuation
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}
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public func finish() {
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self.cont.finish()
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}
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public func makeAsyncIterator() -> AsyncStream<FileHandle>.AsyncIterator {
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connections.makeAsyncIterator()
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}
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}
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#if os(macOS)
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extension VsockConnectionStream: VZVirtioSocketListenerDelegate {
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public func listener(
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_: VZVirtioSocketListener, shouldAcceptNewConnection conn: VZVirtioSocketConnection,
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from _: VZVirtioSocketDevice
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) -> Bool {
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let fd = dup(conn.fileDescriptor)
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guard fd != -1 else {
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return false
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}
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conn.close()
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let fh = FileHandle(fileDescriptor: fd, closeOnDealloc: false)
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let result = cont.yield(fh)
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if case .terminated = result {
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try? fh.close()
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return false
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}
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return true
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}
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}
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#endif
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