Add support for typed throws

Author: colemancda

Sources/Socket/System/NetworkInterface.swift

@@ -9,7 +9,7 @@ import SystemPackage
 import CSocket
 
 /// UNIX Network Interface
-public struct NetworkInterface <Address: SocketAddress>: Identifiable {
+public struct NetworkInterface <Address: SocketAddress>: Identifiable, Sendable {
 
     public typealias ID = NetworkInterfaceID
 
@@ -26,14 +26,18 @@ public struct NetworkInterface <Address: SocketAddress>: Identifiable {
     public let netmask: Address?
 }
 
+extension NetworkInterface: Equatable where Address: Equatable { }
+
+extension NetworkInterface: Hashable where Address: Hashable { }
+
 public extension NetworkInterface {
 
     static var interfaces: [Self] {
-        get throws {
+        get throws(Errno) {
             let interfaceIDs = try NetworkInterfaceID.interfaces
             var linkedList: UnsafeMutablePointer<CInterop.InterfaceLinkedList>? = nil
             guard system_getifaddrs(&linkedList) == 0 else {
-                return []
+                throw Errno.current
             }
             defer { system_freeifaddrs(linkedList) }
             var values = [Self]()
@@ -66,7 +70,7 @@ public extension NetworkInterface {
 
 // MARK: - Supporting Types
 
-public struct NetworkInterfaceID: Equatable, Hashable {
+public struct NetworkInterfaceID: Equatable, Hashable, Sendable {
 
     /// Interface index.
     public let index: UInt32

Sources/Socket/System/SocketAddress.swift

@@ -7,9 +7,9 @@ public protocol SocketAddress: Sendable {
     associatedtype ProtocolID: SocketProtocol
 
     /// Unsafe pointer closure
-    func withUnsafePointer<Result>(
-      _ body: (UnsafePointer<CInterop.SocketAddress>, UInt32) throws -> Result
-    ) rethrows -> Result
+    func withUnsafePointer<Result, Error>(
+      _ body: (UnsafePointer<CInterop.SocketAddress>, UInt32) throws(Error) -> Result
+    ) rethrows -> Result where Error: Swift.Error
 
     static func withUnsafePointer(
         _ pointer: UnsafeMutablePointer<CInterop.SocketAddress>

Sources/Socket/System/SocketAddress/IPv4SocketAddress.swift

@@ -31,9 +31,9 @@ public struct IPv4SocketAddress: SocketAddress, Equatable, Hashable {
         )
     }
 
-    public func withUnsafePointer<Result>(
-      _ body: (UnsafePointer<CInterop.SocketAddress>, UInt32) throws -> Result
-    ) rethrows -> Result {
+    public func withUnsafePointer<Result, Error>(
+      _ body: (UnsafePointer<CInterop.SocketAddress>, UInt32) throws(Error) -> Result
+    ) rethrows -> Result where Error: Swift.Error {
 
         var socketAddress = CInterop.IPv4SocketAddress()
         socketAddress.sin_family = numericCast(Self.family.rawValue)

Sources/Socket/System/SocketAddress/IPv6SocketAddress.swift

@@ -31,9 +31,9 @@ public struct IPv6SocketAddress: SocketAddress, Equatable, Hashable {
         )
     }
 
-    public func withUnsafePointer<Result>(
-      _ body: (UnsafePointer<CInterop.SocketAddress>, UInt32) throws -> Result
-    ) rethrows -> Result {
+    public func withUnsafePointer<Result, Error>(
+      _ body: (UnsafePointer<CInterop.SocketAddress>, UInt32) throws(Error) -> Result
+    ) rethrows -> Result where Error: Swift.Error {
 
         var socketAddress = CInterop.IPv6SocketAddress()
         socketAddress.sin6_family = numericCast(Self.family.rawValue)

Sources/Socket/System/SocketAddress/LinkLayerSocketAddress.swift

@@ -50,9 +50,9 @@ public struct LinkLayerSocketAddress: SocketAddress, Equatable, Hashable {
         self.address = address
     }
 
-    public func withUnsafePointer<Result>(
-        _ body: (UnsafePointer<CInterop.SocketAddress>, UInt32
-        ) throws -> Result) rethrows -> Result {
+    public func withUnsafePointer<Result, Error>(
+      _ body: (UnsafePointer<CInterop.SocketAddress>, UInt32) throws(Error) -> Result
+    ) rethrows -> Result where Error: Swift.Error {
 
         var socketAddress = CSocketAddressType()
         #if canImport(Darwin)

Sources/Socket/System/SocketAddress/UnixSocketAddress.swift

@@ -25,9 +25,9 @@ public struct UnixSocketAddress: SocketAddress, Equatable, Hashable {
         }
     }
 
-    public func withUnsafePointer<Result>(
-      _ body: (UnsafePointer<CInterop.SocketAddress>, UInt32) throws -> Result
-    ) rethrows -> Result {
+    public func withUnsafePointer<Result, Error>(
+      _ body: (UnsafePointer<CInterop.SocketAddress>, UInt32) throws(Error) -> Result
+    ) rethrows -> Result where Error: Swift.Error {
         return try path.withPlatformString { platformString in
             var socketAddress = CInterop.UnixSocketAddress()
             socketAddress.sun_family = numericCast(Self.family.rawValue)