Mercurial > hg > nginx
annotate auto/types/value @ 9179:ea1f29c2010c
HTTP/2: fixed buffer management with HTTP/2 auto-detection.
As part of normal HTTP/2 processing, incomplete frames are saved in the
control state using a fixed size memcpy of NGX_HTTP_V2_STATE_BUFFER_SIZE.
For this matter, two state buffers are reserved in the HTTP/2 recv buffer.
As part of HTTP/2 auto-detection on plain TCP connections, initial data
is first read into a buffer specified by the client_header_buffer_size
directive that doesn't have state reservation. Previously, this made it
possible to over-read the buffer as part of saving the state.
The fix is to read the available buffer size rather than a fixed size.
Although memcpy of a fixed size can produce a better optimized code,
handling of incomplete frames isn't a common execution path, so it was
sacrificed for the sake of simplicity of the fix.
author | Sergey Kandaurov <pluknet@nginx.com> |
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date | Sat, 21 Oct 2023 18:48:24 +0400 |
parents | d620f497c50f |
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rev | line source |
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1 |
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2 # Copyright (C) Igor Sysoev |
4412 | 3 # Copyright (C) Nginx, Inc. |
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6 cat << END >> $NGX_AUTO_CONFIG_H |
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8 #ifndef $ngx_param |
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9 #define $ngx_param $ngx_value |
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10 #endif |
473 | 11 |
12 END |