Merge pull request #1568 from riganti/fix-resource-content-length

Set the Content-Length header in resource middleware

Author: exyi

src/Framework/Framework/Hosting/Middlewares/DotvvmLocalResourceMiddleware.cs

@@ -33,6 +33,9 @@ public async Task<bool> Handle(IDotvvmRequestContext request)
                     request.HttpContext.Response.Headers.Add("Cache-Control", new[] { "no-cache, no-store, must-revalidate" });
                 using (var body = resource.LoadResource(request))
                 {
+                    if (body.CanSeek)
+                        request.HttpContext.Response.Headers["Content-Length"] = body.Length.ToString();
+
                     await body.CopyToAsync(request.HttpContext.Response.Body);
                 }
                 return true;

src/Framework/Framework/Hosting/Middlewares/DotvvmReturnedFileMiddleware.cs

@@ -76,6 +76,9 @@ private async Task RenderReturnedFile(IHttpContext context, IReturnedFileStorage
                     }
                 }
 
+                if (stream.CanSeek)
+                    context.Response.Headers["Content-Length"] = stream.Length.ToString();
+
                 context.Response.StatusCode = (int)HttpStatusCode.OK;
                 await stream.CopyToAsync(context.Response.Body);
             }

src/Framework/Hosting.AspNetCore/Hosting/DotvvmHttpContext.cs

@@ -37,4 +37,4 @@ public IEnumerable<Tuple<string, IEnumerable<KeyValuePair<string, object>>>> Get
                 .Select(k => new KeyValuePair<string, object>(k.Key.ToString(), k.Value)));
         }
     }
-}
+}

src/Framework/Hosting.AspNetCore/Hosting/DotvvmHttpResponse.cs

@@ -64,4 +64,4 @@ public Task WriteAsync(string text, CancellationToken token)
             return OriginalResponse.WriteAsync(text, token);
         }
     }
-}
+}