OpenAPITools · wing328 · Apr 6, 2025 · Apr 5, 2025
diff --git a/...enapi-generator/src/main/java/org/openapitools/codegen/languages/CSharpClientCodegen.java b/...enapi-generator/src/main/java/org/openapitools/codegen/languages/CSharpClientCodegen.java
@@ -924,6 +924,7 @@ public void processOpts() {
                 addSupportingFiles(clientPackageDir, packageFolder, excludeTests, testPackageFolder, testPackageName, modelPackageDir, authPackageDir);
                 supportingFiles.add(new SupportingFile("ConnectionException.mustache", clientPackageDir, "ConnectionException.cs"));
                 supportingFiles.add(new SupportingFile("UnexpectedResponseException.mustache", clientPackageDir, "UnexpectedResponseException.cs"));
+                supportingFiles.add(new SupportingFile("UnityWebRequestAwaiterExtension.mustache", clientPackageDir, "UnityWebRequestAwaiterExtension.cs"));
                 break;
             default: // generichost
                 addGenericHostSupportingFiles(clientPackageDir, packageFolder, excludeTests, testPackageFolder, testPackageName, modelPackageDir);

diff --git a/.../openapi-generator/src/main/resources/csharp/libraries/unityWebRequest/ApiClient.mustache b/.../openapi-generator/src/main/resources/csharp/libraries/unityWebRequest/ApiClient.mustache
@@ -377,10 +377,18 @@ namespace {{packageName}}.Client
 
             using (request)
             {
+                {{#useIntForTimeout}}
                 if (configuration.Timeout > 0)
                 {
-                    request.timeout = (int)Math.Ceiling(configuration.Timeout / 1000.0f);
+                    request.timeout = configuration.Timeout;
                 }
+                {{/useIntForTimeout}}
+                {{^useIntForTimeout}}
+                if (configuration.Timeout > TimeSpan.Zero)
+                {
+                    request.timeout = (int)Math.Ceiling(configuration.Timeout.TotalSeconds);
+                }
+                {{/useIntForTimeout}}
 
                 if (configuration.Proxy != null)
                 {
@@ -400,21 +408,34 @@ namespace {{packageName}}.Client
 
                 InterceptRequest(request, path, options, configuration);
 
+        #if UNITY_2020_2_OR_NEWER
+                // For Unity 2020.2 and newer, use UnityWebRequest.Result.
                 var asyncOp = request.SendWebRequest();
-
-                TaskCompletionSource<UnityWebRequest.Result> tsc = new TaskCompletionSource<UnityWebRequest.Result>();
-                asyncOp.completed += (_) => tsc.TrySetResult(request.result);
-
+                TaskCompletionSource<UnityWebRequest.Result> tcs = new TaskCompletionSource<UnityWebRequest.Result>();
+                asyncOp.completed += (_) => tcs.TrySetResult(request.result);
                 using (var tokenRegistration = cancellationToken.Register(request.Abort, true))
                 {
-                    await tsc.Task;
+                    await tcs.Task;
                 }
-                
+
                 if (request.result == UnityWebRequest.Result.ConnectionError ||
                     request.result == UnityWebRequest.Result.DataProcessingError)
                 {
                     throw new ConnectionException(request);
                 }
+        #else
+                // For Unity 2019 and earlier, await the operation directly.
+                var asyncOp = request.SendWebRequest();
+                using (var tokenRegistration = cancellationToken.Register(request.Abort, true))
+                {
+                    await asyncOp;
+                }
+
+                if (request.isNetworkError || request.isHttpError)
+                {
+                    throw new ConnectionException(request);
+                }
+        #endif
 
                 object responseData = deserializer.Deserialize<T>(request);
 
@@ -636,4 +657,4 @@ namespace {{packageName}}.Client
         }
         #endregion ISynchronousClient
     }
-}
+}
diff --git a/...enerator/src/main/resources/csharp/libraries/unityWebRequest/ConnectionException.mustache b/...enerator/src/main/resources/csharp/libraries/unityWebRequest/ConnectionException.mustache
@@ -5,6 +5,7 @@ using UnityEngine.Networking;
 
 namespace {{packageName}}.Client
 {
+#if UNITY_2020_1_OR_NEWER
     public class ConnectionException : Exception
     {
         public UnityWebRequest.Result Result { get; private set; }
@@ -18,4 +19,39 @@ namespace {{packageName}}.Client
             Error = request.error ?? "";
         }
     }
+#else
+    // For Unity 2019, define a custom enum that roughly simulates UnityWebRequest.Result.
+    public enum UnityWebRequestResultLegacy
+    {
+        Success,
+        ConnectionError,
+        ProtocolError,
+        DataProcessingError
+    }
+
+    public class ConnectionException : Exception
+    {
+        public UnityWebRequestResultLegacy Result { get; private set; }
+        public string Error { get; private set; }
+
+        public ConnectionException(UnityWebRequest request)
+            : base($"Error: {request.error}")
+        {
+            if (request.isNetworkError)
+            {
+                Result = UnityWebRequestResultLegacy.ConnectionError;
+            }
+            else if (request.isHttpError)
+            {
+                Result = UnityWebRequestResultLegacy.ProtocolError;
+            }
+            else
+            {
+                Result = UnityWebRequestResultLegacy.Success;
+            }
+
+            Error = request.error ?? "";
+        }
+    }
+#endif
 }
diff --git a/...les/openapi-generator/src/main/resources/csharp/libraries/unityWebRequest/README.mustache b/...les/openapi-generator/src/main/resources/csharp/libraries/unityWebRequest/README.mustache
@@ -20,7 +20,7 @@ This C# SDK is automatically generated by the [OpenAPI Generator](https://openap
 <a id="version-support"></a>
 ## Version support
 This generator should support all current LTS versions of Unity
-- Unity 2020.3 (LTS) and up
+- Unity 2019.4 (LTS) and up
 - .NET Standard 2.1 / .NET Framework
 
 <a id="dependencies"></a>

diff --git a/.../main/resources/csharp/libraries/unityWebRequest/UnityWebRequestAwaiterExtension.mustache b/.../main/resources/csharp/libraries/unityWebRequest/UnityWebRequestAwaiterExtension.mustache
@@ -0,0 +1,23 @@
+{{>partial_header}}
+
+using System.Runtime.CompilerServices;
+using System.Threading.Tasks;
+using UnityEngine.Networking;
+
+namespace {{packageName}}.Client
+{
+    /// <summary>
+    /// Provides an awaiter for UnityWebRequestAsyncOperation to allow `await request.SendWebRequest()`
+    /// in Unity async methods. Unity's AsyncOperation types are not awaitable by default, so this
+    /// extension bridges that gap by converting the operation into a Task.
+    /// </summary>
+    public static class UnityWebRequestAwaiterExtensions
+    {
+        public static TaskAwaiter<UnityWebRequestAsyncOperation> GetAwaiter(this UnityWebRequestAsyncOperation asyncOp)
+        {
+            var tcs = new TaskCompletionSource<UnityWebRequestAsyncOperation>();
+            asyncOp.completed += _ => tcs.SetResult(asyncOp);
+            return tcs.Task.GetAwaiter();
+        }
+    }
+}
diff --git a/samples/client/petstore/csharp/unityWebRequest/net9/Petstore/.openapi-generator/FILES b/samples/client/petstore/csharp/unityWebRequest/net9/Petstore/.openapi-generator/FILES
@@ -137,6 +137,7 @@ src/Org.OpenAPITools/Client/Multimap.cs
 src/Org.OpenAPITools/Client/OpenAPIDateConverter.cs
 src/Org.OpenAPITools/Client/RequestOptions.cs
 src/Org.OpenAPITools/Client/UnexpectedResponseException.cs
+src/Org.OpenAPITools/Client/UnityWebRequestAwaiterExtension.cs
 src/Org.OpenAPITools/Client/WebRequestPathBuilder.cs
 src/Org.OpenAPITools/Model/AbstractOpenAPISchema.cs
 src/Org.OpenAPITools/Model/Activity.cs

diff --git a/samples/client/petstore/csharp/unityWebRequest/net9/Petstore/README.md b/samples/client/petstore/csharp/unityWebRequest/net9/Petstore/README.md
@@ -12,7 +12,7 @@ This C# SDK is automatically generated by the [OpenAPI Generator](https://openap
 <a id="version-support"></a>
 ## Version support
 This generator should support all current LTS versions of Unity
-- Unity 2020.3 (LTS) and up
+- Unity 2019.4 (LTS) and up
 - .NET Standard 2.1 / .NET Framework
 
 <a id="dependencies"></a>

diff --git a/...nt/petstore/csharp/unityWebRequest/net9/Petstore/src/Org.OpenAPITools/Client/ApiClient.cs b/...nt/petstore/csharp/unityWebRequest/net9/Petstore/src/Org.OpenAPITools/Client/ApiClient.cs
@@ -385,9 +385,9 @@ private async Task<ApiResponse<T>> ExecAsync<T>(
 
             using (request)
             {
-                if (configuration.Timeout > 0)
+                if (configuration.Timeout > TimeSpan.Zero)
                 {
-                    request.timeout = (int)Math.Ceiling(configuration.Timeout / 1000.0f);
+                    request.timeout = (int)Math.Ceiling(configuration.Timeout.TotalSeconds);
                 }
 
                 if (configuration.Proxy != null)
@@ -408,21 +408,34 @@ private async Task<ApiResponse<T>> ExecAsync<T>(
 
                 InterceptRequest(request, path, options, configuration);
 
+        #if UNITY_2020_2_OR_NEWER
+                // For Unity 2020.2 and newer, use UnityWebRequest.Result.
                 var asyncOp = request.SendWebRequest();
-
-                TaskCompletionSource<UnityWebRequest.Result> tsc = new TaskCompletionSource<UnityWebRequest.Result>();
-                asyncOp.completed += (_) => tsc.TrySetResult(request.result);
-
+                TaskCompletionSource<UnityWebRequest.Result> tcs = new TaskCompletionSource<UnityWebRequest.Result>();
+                asyncOp.completed += (_) => tcs.TrySetResult(request.result);
                 using (var tokenRegistration = cancellationToken.Register(request.Abort, true))
                 {
-                    await tsc.Task;
+                    await tcs.Task;
                 }
-                
+
                 if (request.result == UnityWebRequest.Result.ConnectionError ||
                     request.result == UnityWebRequest.Result.DataProcessingError)
                 {
                     throw new ConnectionException(request);
                 }
+        #else
+                // For Unity 2019 and earlier, await the operation directly.
+                var asyncOp = request.SendWebRequest();
+                using (var tokenRegistration = cancellationToken.Register(request.Abort, true))
+                {
+                    await asyncOp;
+                }
+
+                if (request.isNetworkError || request.isHttpError)
+                {
+                    throw new ConnectionException(request);
+                }
+        #endif
 
                 object responseData = deserializer.Deserialize<T>(request);
 
@@ -642,4 +655,4 @@ public ApiResponse<T> Patch<T>(string path, RequestOptions options, IReadableCon
         }
         #endregion ISynchronousClient
     }
-}
+}
diff --git a/...e/csharp/unityWebRequest/net9/Petstore/src/Org.OpenAPITools/Client/ConnectionException.cs b/...e/csharp/unityWebRequest/net9/Petstore/src/Org.OpenAPITools/Client/ConnectionException.cs
@@ -13,6 +13,7 @@
 
 namespace Org.OpenAPITools.Client
 {
+#if UNITY_2020_1_OR_NEWER
     public class ConnectionException : Exception
     {
         public UnityWebRequest.Result Result { get; private set; }
@@ -26,4 +27,39 @@ public ConnectionException(UnityWebRequest request)
             Error = request.error ?? "";
         }
     }
+#else
+    // For Unity 2019, define a custom enum that roughly simulates UnityWebRequest.Result.
+    public enum UnityWebRequestResultLegacy
+    {
+        Success,
+        ConnectionError,
+        ProtocolError,
+        DataProcessingError
+    }
+
+    public class ConnectionException : Exception
+    {
+        public UnityWebRequestResultLegacy Result { get; private set; }
+        public string Error { get; private set; }
+
+        public ConnectionException(UnityWebRequest request)
+            : base($"Error: {request.error}")
+        {
+            if (request.isNetworkError)
+            {
+                Result = UnityWebRequestResultLegacy.ConnectionError;
+            }
+            else if (request.isHttpError)
+            {
+                Result = UnityWebRequestResultLegacy.ProtocolError;
+            }
+            else
+            {
+                Result = UnityWebRequestResultLegacy.Success;
+            }
+
+            Error = request.error ?? "";
+        }
+    }
+#endif
 }
diff --git a/...tyWebRequest/net9/Petstore/src/Org.OpenAPITools/Client/UnityWebRequestAwaiterExtension.cs b/...tyWebRequest/net9/Petstore/src/Org.OpenAPITools/Client/UnityWebRequestAwaiterExtension.cs
@@ -0,0 +1,31 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * Generated by: https://github.com/openapitools/openapi-generator.git
+ */
+
+
+using System.Runtime.CompilerServices;
+using System.Threading.Tasks;
+using UnityEngine.Networking;
+
+namespace Org.OpenAPITools.Client
+{
+    /// <summary>
+    /// Provides an awaiter for UnityWebRequestAsyncOperation to allow `await request.SendWebRequest()`
+    /// in Unity async methods. Unity's AsyncOperation types are not awaitable by default, so this
+    /// extension bridges that gap by converting the operation into a Task.
+    /// </summary>
+    public static class UnityWebRequestAwaiterExtensions
+    {
+        public static TaskAwaiter<UnityWebRequestAsyncOperation> GetAwaiter(this UnityWebRequestAsyncOperation asyncOp)
+        {
+            var tcs = new TaskCompletionSource<UnityWebRequestAsyncOperation>();
+            asyncOp.completed += _ => tcs.SetResult(asyncOp);
+            return tcs.Task.GetAwaiter();
+        }
+    }
+}
diff --git a/samples/client/petstore/csharp/unityWebRequest/standard2.0/Petstore/.openapi-generator/FILES b/samples/client/petstore/csharp/unityWebRequest/standard2.0/Petstore/.openapi-generator/FILES
@@ -137,6 +137,7 @@ src/Org.OpenAPITools/Client/Multimap.cs
 src/Org.OpenAPITools/Client/OpenAPIDateConverter.cs
 src/Org.OpenAPITools/Client/RequestOptions.cs
 src/Org.OpenAPITools/Client/UnexpectedResponseException.cs
+src/Org.OpenAPITools/Client/UnityWebRequestAwaiterExtension.cs
 src/Org.OpenAPITools/Client/WebRequestPathBuilder.cs
 src/Org.OpenAPITools/Model/AbstractOpenAPISchema.cs
 src/Org.OpenAPITools/Model/Activity.cs

diff --git a/samples/client/petstore/csharp/unityWebRequest/standard2.0/Petstore/README.md b/samples/client/petstore/csharp/unityWebRequest/standard2.0/Petstore/README.md
@@ -12,7 +12,7 @@ This C# SDK is automatically generated by the [OpenAPI Generator](https://openap
 <a id="version-support"></a>
 ## Version support
 This generator should support all current LTS versions of Unity
-- Unity 2020.3 (LTS) and up
+- Unity 2019.4 (LTS) and up
 - .NET Standard 2.1 / .NET Framework
 
 <a id="dependencies"></a>

diff --git a/...tore/csharp/unityWebRequest/standard2.0/Petstore/src/Org.OpenAPITools/Client/ApiClient.cs b/...tore/csharp/unityWebRequest/standard2.0/Petstore/src/Org.OpenAPITools/Client/ApiClient.cs
@@ -385,9 +385,9 @@ private async Task<ApiResponse<T>> ExecAsync<T>(
 
             using (request)
             {
-                if (configuration.Timeout > 0)
+                if (configuration.Timeout > TimeSpan.Zero)
                 {
-                    request.timeout = (int)Math.Ceiling(configuration.Timeout / 1000.0f);
+                    request.timeout = (int)Math.Ceiling(configuration.Timeout.TotalSeconds);
                 }
 
                 if (configuration.Proxy != null)
@@ -408,21 +408,34 @@ private async Task<ApiResponse<T>> ExecAsync<T>(
 
                 InterceptRequest(request, path, options, configuration);
 
+        #if UNITY_2020_2_OR_NEWER
+                // For Unity 2020.2 and newer, use UnityWebRequest.Result.
                 var asyncOp = request.SendWebRequest();
-
-                TaskCompletionSource<UnityWebRequest.Result> tsc = new TaskCompletionSource<UnityWebRequest.Result>();
-                asyncOp.completed += (_) => tsc.TrySetResult(request.result);
-
+                TaskCompletionSource<UnityWebRequest.Result> tcs = new TaskCompletionSource<UnityWebRequest.Result>();
+                asyncOp.completed += (_) => tcs.TrySetResult(request.result);
                 using (var tokenRegistration = cancellationToken.Register(request.Abort, true))
                 {
-                    await tsc.Task;
+                    await tcs.Task;
                 }
-                
+
                 if (request.result == UnityWebRequest.Result.ConnectionError ||
                     request.result == UnityWebRequest.Result.DataProcessingError)
                 {
                     throw new ConnectionException(request);
                 }
+        #else
+                // For Unity 2019 and earlier, await the operation directly.
+                var asyncOp = request.SendWebRequest();
+                using (var tokenRegistration = cancellationToken.Register(request.Abort, true))
+                {
+                    await asyncOp;
+                }
+
+                if (request.isNetworkError || request.isHttpError)
+                {
+                    throw new ConnectionException(request);
+                }
+        #endif
 
                 object responseData = deserializer.Deserialize<T>(request);
 
@@ -642,4 +655,4 @@ public ApiResponse<T> Patch<T>(string path, RequestOptions options, IReadableCon
         }
         #endregion ISynchronousClient
     }
-}
+}