Check if response has started before setting header and status code.

Resolve #20483

framework/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/ExceptionHandling/AbpExceptionFilter.cs

@@ -75,10 +75,18 @@ public class AbpExceptionFilter : IAsyncExceptionFilter, IAbpFilter, ITransientD
         }
         else
         {
-            context.HttpContext.Response.Headers.Add(AbpHttpConsts.AbpErrorFormat, "true");
-            context.HttpContext.Response.StatusCode = (int)context
-                .GetRequiredService<IHttpExceptionStatusCodeFinder>()
-                .GetStatusCode(context.HttpContext, context.Exception);
+            if (!context.HttpContext.Response.HasStarted)
+            {
+                context.HttpContext.Response.Headers.Add(AbpHttpConsts.AbpErrorFormat, "true");
+                context.HttpContext.Response.StatusCode = (int)context
+                    .GetRequiredService<IHttpExceptionStatusCodeFinder>()
+                    .GetStatusCode(context.HttpContext, context.Exception);
+            }
+            else
+            {
+                var logger = context.GetService<ILogger<AbpExceptionFilter>>(NullLogger<AbpExceptionFilter>.Instance)!;
+                logger.LogWarning("HTTP response has already started, cannot set headers and status code!");
+            }
 
             context.Result = new ObjectResult(new RemoteServiceErrorResponse(remoteServiceErrorInfo));
         }

framework/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/ExceptionHandling/AbpExceptionPageFilter.cs

@@ -103,10 +103,17 @@ public class AbpExceptionPageFilter : IAsyncPageFilter, IAbpFilter, ITransientDe
         }
         else
         {
-            context.HttpContext.Response.Headers.Add(AbpHttpConsts.AbpErrorFormat, "true");
-            context.HttpContext.Response.StatusCode = (int)context
-                .GetRequiredService<IHttpExceptionStatusCodeFinder>()
-                .GetStatusCode(context.HttpContext, context.Exception!);
+            if (!context.HttpContext.Response.HasStarted)
+            {
+                context.HttpContext.Response.Headers.Add(AbpHttpConsts.AbpErrorFormat, "true");
+                context.HttpContext.Response.StatusCode = (int)context
+                    .GetRequiredService<IHttpExceptionStatusCodeFinder>()
+                    .GetStatusCode(context.HttpContext, context.Exception!);
+            }
+            else
+            {
+                logger.LogWarning("HTTP response has already started, cannot set headers and status code!");
+            }
 
             context.Result = new ObjectResult(new RemoteServiceErrorResponse(remoteServiceErrorInfo));
         }