Mercurial > hg > nginx
diff src/http/v2/ngx_http_v2.h @ 9165:cdda286c0f1b
HTTP/2: per-iteration stream handling limit.
To ensure that attempts to flood servers with many streams are detected
early, a limit of no more than 2 * max_concurrent_streams new streams per one
event loop iteration was introduced. This limit is applied even if
max_concurrent_streams is not yet reached - for example, if corresponding
streams are handled synchronously or reset.
Further, refused streams are now limited to maximum of max_concurrent_streams
and 100, similarly to priority_limit initial value, providing some tolerance
to clients trying to open several streams at the connection start, yet
low tolerance to flooding attempts.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Tue, 10 Oct 2023 15:13:39 +0300 |
parents | 262c01782566 |
children |
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--- a/src/http/v2/ngx_http_v2.h Fri Sep 22 19:23:57 2023 +0400 +++ b/src/http/v2/ngx_http_v2.h Tue Oct 10 15:13:39 2023 +0300 @@ -131,6 +131,8 @@ ngx_uint_t processing; ngx_uint_t frames; ngx_uint_t idle; + ngx_uint_t new_streams; + ngx_uint_t refused_streams; ngx_uint_t priority_limit; size_t send_window;