Mercurial > hg > nginx
comparison 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> |
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date | Tue, 10 Oct 2023 15:13:39 +0300 |
parents | 262c01782566 |
children |
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9164:3db945fda515 | 9165:cdda286c0f1b |
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129 off_t payload_bytes; | 129 off_t payload_bytes; |
130 | 130 |
131 ngx_uint_t processing; | 131 ngx_uint_t processing; |
132 ngx_uint_t frames; | 132 ngx_uint_t frames; |
133 ngx_uint_t idle; | 133 ngx_uint_t idle; |
134 ngx_uint_t new_streams; | |
135 ngx_uint_t refused_streams; | |
134 ngx_uint_t priority_limit; | 136 ngx_uint_t priority_limit; |
135 | 137 |
136 size_t send_window; | 138 size_t send_window; |
137 size_t recv_window; | 139 size_t recv_window; |
138 size_t init_window; | 140 size_t init_window; |