isolate swift 5 workaround

Author: swhitty

FlyingFox/XCTests/SocketAddress+Glibc.swift

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+//
+//  SocketAddress+Glibc.swift
+//  FlyingFox
+//
+//  Created by Simon Whitty on 15/03/2022.
+//  Copyright © 2022 Simon Whitty. All rights reserved.
+//
+//  Distributed under the permissive MIT license
+//  Get the latest version from here:
+//
+//  https://github.com/swhitty/FlyingFox
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+#if canImport(Glibc)
+// swift 5 on linux fails to import comformance for these Glibc types 🤷🏻‍♂️:
+import Glibc
+import FlyingSocks
+
+extension sockaddr_in: SocketAddress {
+    public static let family = sa_family_t(AF_INET)
+}
+
+extension sockaddr_in6: SocketAddress {
+    public static let family = sa_family_t(AF_INET6)
+}
+
+extension sockaddr_un: SocketAddress {
+    public static let family = sa_family_t(AF_UNIX)
+}
+
+#endif