Error occurs when both padding and continuation are enabled

[Valentin V. Bartenev]

On Tuesday 26 January 2016 16:00:08 Shengtuo Hu wrote:
> Hi,
> 
> Another error I met recently. It occurred when both padding and
> continuation are enabled.
> 
> A normal HEADERS frame was divided as follows:
> HEADERS ===> HEADERS(PADDED_FLAG) + CONTINUATION + CONTINUATION
> 
> After sending these frames, I got an error. In the debug log file, I found
> "client sent inappropriate frame while CONTINUATION was expected while
> processing HTTP/2 connection". Then I read the source code (v 1.9.9), and
> located the function "ngx_http_v2_handle_continuation" (ngx_http_v2.c, line
> 1749). It seems NGINX does not skip the "padding part", but tries to read
> "type" field in the next CONTINUATION frame directly.
> 
[..]

Yes, you're right.  It isn't able to skip padding between HEADERS and
CONTINUATION frames.

  wbr, Valentin V. Bartenev