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view auto/lib/libatomic/make @ 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> |
---|---|
date | Sat, 21 Oct 2023 18:48:24 +0400 |
parents | 9b3bbaddb1ef |
children |
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# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. cat << END >> $NGX_MAKEFILE $NGX_LIBATOMIC/src/libatomic_ops.a: $NGX_LIBATOMIC/Makefile cd $NGX_LIBATOMIC && \$(MAKE) $NGX_LIBATOMIC/Makefile: $NGX_MAKEFILE cd $NGX_LIBATOMIC \\ && if [ -f Makefile ]; then \$(MAKE) distclean; fi \\ && ./configure END