Release/4.0

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version:5.5
+// swift-tools-version:5.9
 //
 //  Package.swift
 //
@@ -30,10 +30,12 @@ import PackageDescription
 let package = Package(
     name: "DBNetworkStack",
     platforms: [
-        .iOS(.v9),
-        .tvOS(.v9),
-        .watchOS(.v2),
-        .macOS(.v10_10)
+        .iOS(.v13),
+        .tvOS(.v13),
+        .watchOS(.v6),
+        .macOS(.v10_15),
+        .visionOS(.v1),
+        .macCatalyst(.v14)
     ],
     products: [
         .library(
@@ -44,7 +46,11 @@ let package = Package(
         .target(
             name: "DBNetworkStack",
             dependencies: [],
-            path: "Source"),
+            path: "Source",
+            swiftSettings: [
+                .enableExperimentalFeature("StrictConcurrency")
+            ]
+        ),
         .testTarget(
             name: "DBNetworkStackTests",
             dependencies: ["DBNetworkStack"],

Source/HTTPMethod.swift

@@ -29,7 +29,7 @@ import Foundation
 
  See [IETF document](https://tools.ietf.org/html/rfc7231#section-4.3)
  */
-public enum HTTPMethod: String {
+public enum HTTPMethod: String, Sendable {
     case GET
     case POST
     case PUT

Source/NetworkAccess.swift

@@ -24,14 +24,14 @@
 import Foundation
 
 /// `NetworkAccess` provides access to the network.
-public protocol NetworkAccess {
+public protocol NetworkAccess: Sendable {
 
     /// Fetches a request asynchrony from remote location.
     ///
     /// - Parameters:
     ///   - request: The request one wants to fetch.
     ///   - callback: Callback which gets called when the request finishes.
     /// - Returns: the running network task
-    func load(request: URLRequest, callback: @escaping (Data?, HTTPURLResponse?, Error?) -> Void) -> NetworkTask
+    func load(request: URLRequest) async throws -> (Data, URLResponse)
 
 }

Source/NetworkError.swift

@@ -24,7 +24,7 @@
 import Foundation
 
 /// `NetworkError` provides a collection of error types which can occur during execution.
-public enum NetworkError: Error {
+public enum NetworkError: Error, Sendable {
     /// The error is unkonw
     case unknownError
     /// The request was cancelled before it finished
@@ -36,15 +36,11 @@ public enum NetworkError: Error {
     /// Error on the server (HTTP Error 500...511)
     case serverError(response: HTTPURLResponse?, data: Data?)
     /// Parsing the body into expected type failed.
-    case serializationError(error: Error, data: Data?)
+    case serializationError(error: Error, response: HTTPURLResponse, data: Data?)
     /// Complete request failed.
     case requestError(error: Error)
 
-    public init?(response: HTTPURLResponse?, data: Data?) {
-        guard let response = response else {
-            return nil
-        }
-
+    public init?(response: HTTPURLResponse, data: Data) {
         switch response.statusCode {
         case 200..<300: return nil
         case 401:
@@ -79,22 +75,30 @@ extension NetworkError: CustomDebugStringConvertible {
         case .cancelled:
             return "Request cancelled"
         case .unauthorized(let response, let data):
-            return "Authorization error: \(response), response: ".appendingContentsOf(data: data)
+            return "Authorization error, response headers: \(response), response body: ".appendingContentsOf(data: data)
         case .clientError(let response, let data):
             if let response = response {
-                return "Client error: \((response)), response: ".appendingContentsOf(data: data)
+                return "Client error, response headers: \((response)), response body: ".appendingContentsOf(data: data)
             }
-            return "Client error, response: ".appendingContentsOf(data: data)
-        case .serializationError(let description, let data):
-            return "Serialization error: \(description), response: ".appendingContentsOf(data: data)
+            return "Client error, response headers: nil, response body: ".appendingContentsOf(data: data)
+        case .serializationError(let error, let response, let data):
+            return "Serialization error: \(error), response headers: \(response), response body: ".appendingContentsOf(data: data)
         case .requestError(let error):
             return "Request error: \(error)"
         case .serverError(let response, let data):
-            if let response = response {
-                return "Server error: \(String(describing: response)), response: ".appendingContentsOf(data: data)
+            if let response {
+                return "Server error, response headers: \(String(describing: response)), response body: ".appendingContentsOf(data: data)
             } else {
-                return "Server error: nil, response: ".appendingContentsOf(data: data)
+                return "Server error: nil, response body: ".appendingContentsOf(data: data)
             }
         }
     }
 }
+
+extension NetworkError: NetworkErrorConvertible {
+
+    public init(networkError: NetworkError) {
+        self = networkError
+    }
+
+}

Source/NetworkErrorConvertible.swift

@@ -0,0 +1,14 @@
+//
+//  File.swift
+//  
+//
+//  Created by Lukas Schmidt on 13.10.23.
+//
+
+import Foundation
+
+public protocol NetworkErrorConvertible: Error {
+
+    init(networkError: NetworkError)
+
+}