Mercurial > hg > nginx-quic
annotate src/http/v2/ngx_http_v2_module.h @ 8759:56dec0d4e5b1 quic
QUIC: avoid excessive buffer allocations in stream output.
Previously, when a few bytes were send to a QUIC stream by the application, a
4K buffer was allocated for these bytes. Then a STREAM frame was created and
that entire buffer was used as data for that frame. The frame with the buffer
were in use up until the frame was acked by client. Meanwhile, when more
bytes were send to the stream, more buffers were allocated and assigned as
data to newer STREAM frames. In this scenario most buffer memory is unused.
Now the unused part of the stream output buffer is available for further
stream output while earlier parts of the buffer are waiting to be acked.
This is achieved by splitting the output buffer.
author | Roman Arutyunyan <arut@nginx.com> |
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date | Fri, 24 Dec 2021 18:13:51 +0300 |
parents | 827202ca1269 |
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rev | line source |
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The HTTP/2 implementation (RFC 7240, 7241).
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1 |
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2 /* |
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3 * Copyright (C) Nginx, Inc. |
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4 * Copyright (C) Valentin V. Bartenev |
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5 */ |
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6 |
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7 |
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8 #ifndef _NGX_HTTP_V2_MODULE_H_INCLUDED_ |
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9 #define _NGX_HTTP_V2_MODULE_H_INCLUDED_ |
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10 |
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12 #include <ngx_config.h> |
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13 #include <ngx_core.h> |
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14 #include <ngx_http.h> |
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15 |
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17 typedef struct { |
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18 size_t recv_buffer_size; |
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19 u_char *recv_buffer; |
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20 } ngx_http_v2_main_conf_t; |
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22 |
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23 typedef struct { |
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24 size_t pool_size; |
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25 ngx_uint_t concurrent_streams; |
7201 | 26 ngx_uint_t concurrent_pushes; |
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27 size_t preread_size; |
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28 ngx_uint_t streams_index_mask; |
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29 } ngx_http_v2_srv_conf_t; |
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31 |
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32 typedef struct { |
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33 size_t chunk_size; |
7201 | 34 |
35 ngx_flag_t push_preload; | |
36 | |
37 ngx_flag_t push; | |
38 ngx_array_t *pushes; | |
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39 } ngx_http_v2_loc_conf_t; |
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42 extern ngx_module_t ngx_http_v2_module; |
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43 |
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44 |
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45 #endif /* _NGX_HTTP_V2_MODULE_H_INCLUDED_ */ |