Mercurial > hg > nginx-quic
view auto/os/conf @ 7832:ad3a6f069498 quic
Added proper handling of connection close phases.
There are following flags in quic connection:
closing - true, when a connection close is initiated, for whatever reason
draining - true, when a CC frame is received from peer
The following state machine is used for closing:
+------------------+
| I/HS/AD |
+------------------+
| | |
| | V
| | immediate close initiated:
| | reasons: close by top-level protocol, fatal error
| | + sends CC (probably with app-level message)
| | + starts close_timer: 3 * PTO (current probe timeout)
| | |
| | V
| | +---------+ - Reply to input with CC (rate-limited)
| | | CLOSING | - Close/Reset all streams
| | +---------+
| | | |
| V V |
| receives CC |
| | |
idle | |
timer | |
| V |
| +----------+ | - MUST NOT send anything (MAY send a single CC)
| | DRAINING | | - if not already started, starts close_timer: 3 * PTO
| +----------+ | - if not already done, close all streams
| | |
| | |
| close_timer fires
| |
V V
+------------------------+
| CLOSED | - clean up all the resources, drop connection
+------------------------+ state completely
The ngx_quic_close_connection() function gets an "rc" argument, that signals
reason of connection closing:
NGX_OK - initiated by application (i.e. http/3), follow state machine
NGX_DONE - timedout (while idle or draining)
NGX_ERROR - fatal error, destroy connection immediately
The PTO calculations are not yet implemented, hardcoded value of 5s is used.
author | Vladimir Homutov <vl@nginx.com> |
---|---|
date | Thu, 23 Apr 2020 13:41:08 +0300 |
parents | e4c21e417277 |
children | 35afae4b3dff |
line wrap: on
line source
# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. echo "checking for $NGX_SYSTEM specific features" case "$NGX_PLATFORM" in FreeBSD:*) . auto/os/freebsd ;; Linux:*) . auto/os/linux ;; SunOS:*) . auto/os/solaris ;; Darwin:*) . auto/os/darwin ;; win32) . auto/os/win32 ;; DragonFly:*) have=NGX_FREEBSD . auto/have_headers CORE_INCS="$UNIX_INCS" CORE_DEPS="$UNIX_DEPS $FREEBSD_DEPS" CORE_SRCS="$UNIX_SRCS $FREEBSD_SRCS" echo " + sendfile() found" have=NGX_HAVE_SENDFILE . auto/have CORE_SRCS="$CORE_SRCS $FREEBSD_SENDFILE_SRCS" ngx_spacer=' ' ;; NetBSD:*) CORE_INCS="$UNIX_INCS" CORE_DEPS="$UNIX_DEPS $POSIX_DEPS" CORE_SRCS="$UNIX_SRCS" NGX_RPATH=YES ;; HP-UX:*) # HP/UX have=NGX_HPUX . auto/have_headers CORE_INCS="$UNIX_INCS" CORE_DEPS="$UNIX_DEPS $POSIX_DEPS" CORE_SRCS="$UNIX_SRCS" CC_AUX_FLAGS="$CC_AUX_FLAGS -D_XOPEN_SOURCE -D_XOPEN_SOURCE_EXTENDED=1" CC_AUX_FLAGS="$CC_AUX_FLAGS -D_HPUX_ALT_XOPEN_SOCKET_API" ;; OSF1:*) # Tru64 UNIX have=NGX_TRU64 . auto/have_headers have=NGX_HAVE_STRERROR_R . auto/nohave CORE_INCS="$UNIX_INCS" CORE_DEPS="$UNIX_DEPS $POSIX_DEPS" CORE_SRCS="$UNIX_SRCS" ;; GNU:*) # GNU Hurd have=NGX_GNU_HURD . auto/have_headers CORE_INCS="$UNIX_INCS" CORE_DEPS="$UNIX_DEPS $POSIX_DEPS" CORE_SRCS="$UNIX_SRCS" CC_AUX_FLAGS="$CC_AUX_FLAGS -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64" ;; *) CORE_INCS="$UNIX_INCS" CORE_DEPS="$UNIX_DEPS $POSIX_DEPS" CORE_SRCS="$UNIX_SRCS" ;; esac case "$NGX_MACHINE" in i386 | i686 | i86pc) have=NGX_HAVE_NONALIGNED . auto/have NGX_MACH_CACHE_LINE=32 ;; amd64 | x86_64) have=NGX_HAVE_NONALIGNED . auto/have NGX_MACH_CACHE_LINE=64 ;; sun4u | sun4v | sparc | sparc64) have=NGX_ALIGNMENT value=16 . auto/define # TODO NGX_MACH_CACHE_LINE=64 ;; ia64 ) have=NGX_ALIGNMENT value=16 . auto/define # TODO NGX_MACH_CACHE_LINE=64 ;; aarch64 ) have=NGX_ALIGNMENT value=16 . auto/define NGX_MACH_CACHE_LINE=64 ;; *) have=NGX_ALIGNMENT value=16 . auto/define NGX_MACH_CACHE_LINE=32 ;; esac if test -z "$NGX_CPU_CACHE_LINE"; then NGX_CPU_CACHE_LINE=$NGX_MACH_CACHE_LINE fi have=NGX_CPU_CACHE_LINE value=$NGX_CPU_CACHE_LINE . auto/define