POST cannot safely redirect like GET does, the body should be preserved.

ilonatommy · ilonatommy · commit 3521c8f36cdc · 2025-04-14T12:20:11.000+02:00
diff --git a/src/Components/Endpoints/src/Rendering/EndpointHtmlRenderer.EventDispatch.cs b/src/Components/Endpoints/src/Rendering/EndpointHtmlRenderer.EventDispatch.cs
@@ -89,7 +89,7 @@ private void SetNotFoundResponse(object? sender, EventArgs args)
 
     private async Task OnNavigateTo(string uri)
     {
-        if (_httpContext.Response.HasStarted)
+        if (_httpContext.Response.HasStarted || _httpContext.Request.Method == HttpMethods.Post)
         {
             var defaultBufferSize = 16 * 1024;
             await using var writer = new HttpResponseStreamWriter(_httpContext.Response.Body, Encoding.UTF8, defaultBufferSize, ArrayPool<byte>.Shared, ArrayPool<char>.Shared);

Original file line number	Diff line number	Diff line change
`@@ -89,7 +89,7 @@ private void SetNotFoundResponse(object? sender, EventArgs args)`
`89`	`89`
`90`	`90`	`private async Task OnNavigateTo(string uri)`
`91`	`91`	`{`
`92`		`- if (_httpContext.Response.HasStarted)`
	`92`	`+ if (_httpContext.Response.HasStarted \|\| _httpContext.Request.Method == HttpMethods.Post)`
`93`	`93`	`{`
`94`	`94`	`var defaultBufferSize = 16 * 1024;`
`95`	`95`	`await using var writer = new HttpResponseStreamWriter(_httpContext.Response.Body, Encoding.UTF8, defaultBufferSize, ArrayPool<byte>.Shared, ArrayPool<char>.Shared);`