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.

# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


have=NGX_SOLARIS . auto/have_headers

CORE_INCS="$UNIX_INCS"
CORE_DEPS="$UNIX_DEPS $SOLARIS_DEPS"
CORE_SRCS="$UNIX_SRCS $SOLARIS_SRCS "
CORE_LIBS="$CORE_LIBS -lsocket -lnsl"

NGX_RPATH=YES

# Solaris's make does not support a blank line between target and rules
ngx_spacer=

CC_AUX_FLAGS="$CC_AUX_FLAGS -D_FILE_OFFSET_BITS=64 -lsocket -lnsl"


if [ $ZLIB_ASM != NO ]; then
    echo "$0: error: the --with-zlib-asm=CPU option is not supported"
    echo "on that platform"
    echo

    exit 1
fi


ngx_feature="sendfilev()"
ngx_feature_name="NGX_HAVE_SENDFILE"
ngx_feature_run=no
ngx_feature_incs="#include <sys/sendfile.h>"
ngx_feature_path=
ngx_feature_libs="-lsendfile"
ngx_feature_test="int fd = 1; sendfilevec_t vec[1];
                  size_t sent; ssize_t n;
                  n = sendfilev(fd, vec, 1, &sent);
                  if (n == -1) return 1"
. auto/feature


if [ $ngx_found = yes ]; then
    CORE_SRCS="$CORE_SRCS $SOLARIS_SENDFILEV_SRCS"
    CORE_LIBS="$CORE_LIBS -lsendfile"
fi


ngx_feature="event ports"
ngx_feature_name="NGX_HAVE_EVENTPORT"
ngx_feature_run=no
ngx_feature_incs="#include <port.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="(void) port_create()"
. auto/feature

if [ $ngx_found = yes ]; then
    CORE_SRCS="$CORE_SRCS $EVENTPORT_SRCS"
    EVENT_MODULES="$EVENT_MODULES $EVENTPORT_MODULE"
fi