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| author | Sergey Kandaurov <pluknet@nginx.com> | 2023-06-08 16:56:46 +0400 |
|---|---|---|
| committer | Sergey Kandaurov <pluknet@nginx.com> | 2023-06-08 16:56:46 +0400 |
| commit | 6915d2fb2e88e0c339fe37b37ce14f5fe446c1c6 (patch) | |
| tree | 7abd9b350b80b07a2c96583025621151dffe1ba5 /src/http/v2/ngx_http_v2.h | |
| parent | d32f66f1e8dc81a0edbadbacf74191684a653d09 (diff) | |
| download | nginx-6915d2fb2e88e0c339fe37b37ce14f5fe446c1c6.tar.gz nginx-6915d2fb2e88e0c339fe37b37ce14f5fe446c1c6.tar.bz2 | |
HTTP/2: removed server push (ticket #2432).
Although it has better implementation status than HTTP/3 server push,
it remains of limited use, with adoption numbers seen as negligible.
Per IETF 102 materials, server push was used only in 0.04% of sessions.
It was considered to be "difficult to use effectively" in RFC 9113.
Its use is further limited by badly matching to fetch/cache/connection
models in browsers, see related discussions linked from [1].
Server push was disabled in Chrome 106 [2].
The http2_push, http2_push_preload, and http2_max_concurrent_pushes
directives are made obsolete. In particular, this essentially reverts
7201:641306096f5b and 7207:3d2b0b02bd3d.
[1] https://jakearchibald.com/2017/h2-push-tougher-than-i-thought/
[2] https://chromestatus.com/feature/6302414934114304
Diffstat (limited to 'src/http/v2/ngx_http_v2.h')
| -rw-r--r-- | src/http/v2/ngx_http_v2.h | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/src/http/v2/ngx_http_v2.h b/src/http/v2/ngx_http_v2.h index cb7a313e0..cb9014ccf 100644 --- a/src/http/v2/ngx_http_v2.h +++ b/src/http/v2/ngx_http_v2.h @@ -24,8 +24,6 @@ #define NGX_HTTP_V2_MAX_FIELD \ (127 + (1 << (NGX_HTTP_V2_INT_OCTETS - 1) * 7) - 1) -#define NGX_HTTP_V2_STREAM_ID_SIZE 4 - #define NGX_HTTP_V2_FRAME_HEADER_SIZE 9 /* frame types */ @@ -67,7 +65,6 @@ typedef struct { ngx_flag_t enable; size_t pool_size; ngx_uint_t concurrent_streams; - ngx_uint_t concurrent_pushes; size_t preread_size; ngx_uint_t streams_index_mask; } ngx_http_v2_srv_conf_t; @@ -136,9 +133,6 @@ struct ngx_http_v2_connection_s { ngx_uint_t idle; ngx_uint_t priority_limit; - ngx_uint_t pushing; - ngx_uint_t concurrent_pushes; - size_t send_window; size_t recv_window; size_t init_window; @@ -165,7 +159,6 @@ struct ngx_http_v2_connection_s { ngx_uint_t closed_nodes; ngx_uint_t last_sid; - ngx_uint_t last_push; time_t lingering_time; @@ -173,7 +166,6 @@ struct ngx_http_v2_connection_s { unsigned table_update:1; unsigned blocked:1; unsigned goaway:1; - unsigned push_disabled:1; }; @@ -303,9 +295,6 @@ void ngx_http_v2_init(ngx_event_t *rev); ngx_int_t ngx_http_v2_read_request_body(ngx_http_request_t *r); ngx_int_t ngx_http_v2_read_unbuffered_request_body(ngx_http_request_t *r); -ngx_http_v2_stream_t *ngx_http_v2_push_stream(ngx_http_v2_stream_t *parent, - ngx_str_t *path); - void ngx_http_v2_close_stream(ngx_http_v2_stream_t *stream, ngx_int_t rc); ngx_int_t ngx_http_v2_send_output_queue(ngx_http_v2_connection_t *h2c); @@ -407,15 +396,12 @@ ngx_int_t ngx_http_v2_table_size(ngx_http_v2_connection_t *h2c, size_t size); #define NGX_HTTP_V2_STATUS_404_INDEX 13 #define NGX_HTTP_V2_STATUS_500_INDEX 14 -#define NGX_HTTP_V2_ACCEPT_ENCODING_INDEX 16 -#define NGX_HTTP_V2_ACCEPT_LANGUAGE_INDEX 17 #define NGX_HTTP_V2_CONTENT_LENGTH_INDEX 28 #define NGX_HTTP_V2_CONTENT_TYPE_INDEX 31 #define NGX_HTTP_V2_DATE_INDEX 33 #define NGX_HTTP_V2_LAST_MODIFIED_INDEX 44 #define NGX_HTTP_V2_LOCATION_INDEX 46 #define NGX_HTTP_V2_SERVER_INDEX 54 -#define NGX_HTTP_V2_USER_AGENT_INDEX 58 #define NGX_HTTP_V2_VARY_INDEX 59 #define NGX_HTTP_V2_PREFACE_START "PRI * HTTP/2.0\r\n" |