Makes sense and good to know, but for diag output is there any way to turn 
it off?

On Friday 13 September 2024 at 14:25:19 UTC+1 Eli Lindsey wrote:

> Those are sizes from chunked encoding. 
>
> -eli 
>
> On Sep 13, 2024, at 9:10 AM, Peter Galbavy <pe...@wonderland.org> wrote:
>
> I am trying to add some low level tracing to a client app to validate the 
> responses coming from a SaaS platform.
>
>
> When I use either http's resp.Write(os.Stderr) or 
> httputil.DumpResponse(resp, true) I see a hex content length immediately 
> before the body and a literal "0" on a line after,
>
> i.e. using a local copy of the doc example for DumpResponse() but with a 
> real URL and outputting "string(dump)" instead of quotes bytes) to a local 
> server I get (HTML between open/close removed for brevity):
>
> ---
> HTTP/1.1 200 OK
> Transfer-Encoding: chunked
> Connection: keep-alive
> Content-Type: text/html
> Date: Fri, 13 Sep 2024 13:05:33 GMT
> Etag: W/"62136b7a-d2"
> Last-Modified: Mon, 21 Feb 2022 10:37:46 GMT
> Server: nginx/1.27.0
>
> d2
> <!DOCTYPE HTML>
> <html>
> ...
> </html>
>
> 0
> ---
>
> The "d2" is the content length and the "0" is extra. Compared against 
> Postman and curl on the command line, to be sure.
>
> Is this expected by undocumented or have I missed something please?
>
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