[PATCH 2 of 4] HTTP/2: send SETTINGS ACK after applying all SETTINGS params

[Valentin V. Bartenev]

On Monday 24 April 2017 15:48:24 Piotr Sikora via nginx-devel wrote:
> # HG changeset patch
> # User Piotr Sikora <piotrsikora at google.com>
> # Date 1493073310 25200
> #      Mon Apr 24 15:35:10 2017 -0700
> # Node ID a8cfd4c454ff5433629bfd16444c6c71ee932fa1
> # Parent  07adf0a7009c3244de4b795c0c06927f4316a87f
> HTTP/2: send SETTINGS ACK after applying all SETTINGS params.
> 
> This avoids sending unnecessary SETTINGS ACK in case of PROTOCOL_ERROR.
> 
> Signed-off-by: Piotr Sikora <piotrsikora at google.com>
> 
> diff -r 07adf0a7009c -r a8cfd4c454ff src/http/v2/ngx_http_v2.c
> --- a/src/http/v2/ngx_http_v2.c
> +++ b/src/http/v2/ngx_http_v2.c
> @@ -1972,8 +1972,6 @@ ngx_http_v2_state_settings(ngx_http_v2_c
>          return ngx_http_v2_connection_error(h2c, NGX_HTTP_V2_SIZE_ERROR);
>      }
>  
> -    ngx_http_v2_send_settings(h2c, 1);
> -
>      return ngx_http_v2_state_settings_params(h2c, pos, end);
>  }
>  
> @@ -2037,6 +2035,8 @@ ngx_http_v2_state_settings_params(ngx_ht
>          pos += NGX_HTTP_V2_SETTINGS_PARAM_SIZE;
>      }
>  
> +    ngx_http_v2_send_settings(h2c, 1);
> +
>      if (adjustment) {
>          if (ngx_http_v2_adjust_windows(h2c, adjustment) != NGX_OK) {
>              return ngx_http_v2_connection_error(h2c,


Looks good.

  wbr, Valentin V. Bartenev