Don't force default content-type if no content

jherven · jherven · commit 672cb95bc7ee · 2023-11-25T17:38:53.000+01:00
diff --git a/src/Microsoft.AspNetCore.SystemWebAdapters.CoreServices/SetDefaultResponseHeadersMiddleware.cs b/src/Microsoft.AspNetCore.SystemWebAdapters.CoreServices/SetDefaultResponseHeadersMiddleware.cs
@@ -32,7 +32,8 @@ public Task InvokeAsync(HttpContext context)
 
     private static void WriteDefaultContentType(HttpContext context)
     {
-        if (context.Response.Headers.ContentType.Count == 0)
+        bool hasContent = context.Response.ContentLength.HasValue;
+        if (hasContent && context.Response.Headers.ContentType.Count == 0)
         {
             context.Response.Headers.ContentType = "text/html";
         }

Original file line number	Diff line number	Diff line change
`@@ -32,7 +32,8 @@ public Task InvokeAsync(HttpContext context)`
`32`	`32`
`33`	`33`	`private static void WriteDefaultContentType(HttpContext context)`
`34`	`34`	`{`
`35`		`- if (context.Response.Headers.ContentType.Count == 0)`
	`35`	`+ bool hasContent = context.Response.ContentLength.HasValue;`
	`36`	`+ if (hasContent && context.Response.Headers.ContentType.Count == 0)`
`36`	`37`	`{`
`37`	`38`	`context.Response.Headers.ContentType = "text/html";`
`38`	`39`	`}`