Mercurial > hg > nginx
view auto/lib/pcre/makefile.owc @ 9007:2dc4203d812c quic
QUIC: fixed in-flight bytes accounting.
Initially, frames are genereated and stored in ctx->frames.
Next, ngx_quic_output() collects frames to be sent in in ctx->sending.
On failure, ngx_quic_revert_sned() returns frames into ctx->frames.
On success, the ngx_quic_commit_send() moves ack-eliciting frames into
ctx->sent and frees non-ack-eliciting frames.
This function also updates in-flight bytes counter, so only actually sent
frames are accounted.
The counter is decremented in the following cases:
- acknowledgment is received
- packet was declared lost
- we are discarding context completely
In each of this cases frame is removed from ctx->sent queue and in-flight
counter is accordingly decremented.
The patch fixes the case of discarding context - only removing frames
from ctx->sent must be followed by in-flight bytes counter decrement,
otherwise cg->in_flight could experience type underflow.
The issue appeared in b1676cd64dc9.
author | Vladimir Homutov <vl@nginx.com> |
---|---|
date | Wed, 09 Feb 2022 15:51:42 +0300 |
parents | 670ceaba03d8 |
children |
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# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. CFLAGS = -c -zq -bt=nt -ot -op -oi -oe -s -bm $(CPU_OPT) PCREFLAGS = -DHAVE_CONFIG_H -DPCRE_STATIC -DPOSIX_MALLOC_THRESHOLD=10 & -DSUPPORT_PCRE8 -DHAVE_MEMMOVE pcre.lib: cd $(PCRE) wcl386 $(CFLAGS) -i=. $(PCREFLAGS) pcre_*.c dir /b *.obj > pcre.lst wlib -n pcre.lib @pcre.lst pcre.h: cd $(PCRE) copy /y pcre.h.generic pcre.h copy /y config.h.generic config.h copy /y pcre_chartables.c.dist pcre_chartables.c