Question about example

[sungam3r]

As I understand the last line always should fail because of context.Response.WriteAsync("Hello "); nothing to do with next() call here, right?

[davidfowl]

If previously executed middleware is buffering then it won't fail.

[sungam3r]

OK. I understand. My point is about accents in text. Comment says This may fail if next() already wrote to the response focusing reader on next() call but one line above we can see await context.Response.WriteAsync("Hello "); which indeed wrote response regardless any code inside next(). For me line await context.Response.WriteAsync("Hello "); seems confusing and I feel it can be changed to something else (neutral like logging call) or event deleted.