moved retry logic into multi instead of the connection itself

Update tests/data/Makefile.am

Co-authored-by: Viktor Szakats <vszakats@users.noreply.github.com>

Apply suggestions from code review

whitespace stuff

Co-authored-by: Viktor Szakats <vszakats@users.noreply.github.com>

more whitspace fixes

more docs changed

pull request fixes

(note that CI requires that symbols-in-versions be something that it should not be)

moving to new curl version

better documentation

try and see maybe  async is destroyed properly now?

removed whitespace

Co-authored-by: Viktor Szakats <vszakats@users.noreply.github.com>

Update docs/libcurl/opts/CURLOPT_ALTSVC_CTRL.md

"-" uses insteadvof space

Co-authored-by: Viktor Szakats <vszakats@users.noreply.github.com>

better handeling of the recovering and checking whether or not to recover
This commit is contained in:
User 2025-05-01 09:33:25 +03:00 committed by nevakrien
parent bf25e678cf
commit ed1f181013
11 changed files with 94 additions and 252 deletions

View file

@ -55,7 +55,12 @@ Setting any bit enables the alt-svc engine.
If the connection fails when trying to connect to an alternative host,
the hostname from the URL is attempted instead.
Failed connection problems that trigger this fallback include: ...
Failed connection problems that trigger this fallback:
1. bad addresses such as .onion
2. non-responsive servers
3. bad SSL
4. unsupported protocols
5. response appears to be the wrong protocol
## CURLALTSVC_READONLYFILE

View file

@ -199,7 +199,7 @@ CURLALTSVC_H1 7.64.1
CURLALTSVC_H2 7.64.1
CURLALTSVC_H3 7.64.1
CURLALTSVC_READONLYFILE 7.64.1
CURLALTSVC_NO_RETRY 8.14.0
CURLALTSVC_NO_RETRY 8.15.0
CURLAUTH_ANY 7.10.6
CURLAUTH_ANYSAFE 7.10.6
CURLAUTH_AWS_SIGV4 7.75.0

View file

@ -303,8 +303,6 @@ struct altsvcinfo *Curl_altsvc_init(void)
return NULL;
Curl_llist_init(&asi->list, NULL);
asi->used = FALSE;
/* set default behavior */
asi->flags = CURLALTSVC_H1
#ifdef USE_HTTP2

View file

@ -49,6 +49,7 @@ struct altsvcinfo {
struct Curl_llist list; /* list of entries */
long flags; /* the publicly set bitmask */
BIT(errored);
BIT(used);
};

View file

@ -58,6 +58,7 @@
#include "curl_printf.h"
#include "curl_memory.h"
#include "memdebug.h"
#include "altsvc.h"
/* initial multi->xfers table size for a full multi */
#define CURL_XFER_TABLE_SIZE 512
@ -2327,6 +2328,33 @@ static CURLMcode state_connect(struct Curl_multi *multi,
return rc;
}
#ifndef CURL_DISABLE_ALTSVC
static bool is_altsvc_error(CURLcode rc)
{
switch(rc) {
case CURLE_URL_MALFORMAT:
case CURLE_COULDNT_RESOLVE_PROXY:
case CURLE_COULDNT_RESOLVE_HOST:
case CURLE_COULDNT_CONNECT:
case CURLE_HTTP2:
case CURLE_HTTP2_STREAM:
case CURLE_HTTP3:
case CURLE_QUIC_CONNECT_ERROR:
case CURLE_SSL_CONNECT_ERROR:
case CURLE_GOT_NOTHING:
case CURLE_SEND_ERROR:
case CURLE_RECV_ERROR:
case CURLE_PROXY:
case CURLE_ECH_REQUIRED:
case CURLE_BAD_CONTENT_ENCODING:
return true;
default:
return false;
}
}
#endif
static CURLMcode multi_runsingle(struct Curl_multi *multi,
struct curltime *nowp,
struct Curl_easy *data)
@ -2412,6 +2440,10 @@ static CURLMcode multi_runsingle(struct Curl_multi *multi,
FALLTHROUGH();
case MSTATE_CONNECT:
#ifndef CURL_DISABLE_ALTSVC
do_connect:
#endif
rc = state_connect(multi, data, nowp, &result);
break;
@ -2642,6 +2674,35 @@ static CURLMcode multi_runsingle(struct Curl_multi *multi,
}
statemachine_end:
/* maybe retry if altsvc is breaking */
#ifndef CURL_DISABLE_ALTSVC
if(
result &&
data->asi && data->asi->used && !data->asi->errored
) {
data->asi->errored = is_altsvc_error(result);
if(data->asi->errored &&
!(data->asi->flags & CURLALTSVC_NO_RETRY) &&
data->mstate <= MSTATE_PROTOCONNECTING &&
data->mstate >= MSTATE_CONNECT) {
infof(data, "Alt-Svc connection failed(%d). "
"Retrying with original target", result);
if(data->conn && stream_error) {
bool dead_connection = result == CURLE_OPERATION_TIMEDOUT;
struct connectdata *conn = data->conn;
Curl_detach_connection(data);
Curl_conn_terminate(data, conn, dead_connection);
}
stream_error = FALSE;
multistate(data, MSTATE_CONNECT);
goto do_connect;
}
}
#endif
if(data->mstate < MSTATE_COMPLETED) {
if(result) {

View file

@ -3113,7 +3113,8 @@ static CURLcode parse_connect_to_slist(struct Curl_easy *data,
}
#ifndef CURL_DISABLE_ALTSVC
if(data->asi && !host && (port == -1) &&
/* only use altsvc if its the first time we tried it */
if(data->asi && !host && (port == -1) && !data->asi->errored &&
((conn->handler->protocol == CURLPROTO_HTTPS) ||
#ifdef DEBUGBUILD
/* allow debug builds to circumvent the HTTPS restriction */
@ -3177,6 +3178,9 @@ static CURLcode parse_connect_to_slist(struct Curl_easy *data,
char *hostd = strdup((char *)as->dst.host);
if(!hostd)
return CURLE_OUT_OF_MEMORY;
data->asi->used = TRUE;
conn->conn_to_host.rawalloc = hostd;
conn->conn_to_host.name = hostd;
conn->bits.conn_to_host = TRUE;
@ -3426,8 +3430,7 @@ static void conn_meta_freeentry(void *p)
static CURLcode create_conn(struct Curl_easy *data,
struct connectdata **in_connect,
bool *reusedp,
bool *use_slist)
bool *reusedp)
{
CURLcode result = CURLE_OK;
struct connectdata *conn;
@ -3538,13 +3541,9 @@ static CURLcode create_conn(struct Curl_easy *data,
* Process the "connect to" linked list of hostname/port mappings.
* Do this after the remote port number has been fixed in the URL.
*************************************************************/
if(!data->asi || !data->asi->used) {
result = parse_connect_to_slist(data, conn, data->set.connect_to);
if(data->asi)
data->asi->used = TRUE;
if(result)
goto out;
}
result = parse_connect_to_slist(data, conn, data->set.connect_to);
if(result)
goto out;
/*************************************************************
* IDN-convert the proxy hostnames
@ -3839,6 +3838,12 @@ CURLcode Curl_setup_conn(struct Curl_easy *data,
DEBUGASSERT(dns);
Curl_pgrsTime(data, TIMER_NAMELOOKUP);
if(conn->handler->flags & PROTOPT_NONETWORK) {
/* nothing to setup when not using a network */
*protocol_done = TRUE;
return result;
}
if(!conn->bits.reuse)
result = Curl_conn_setup(data, conn, FIRSTSOCKET, dns,
CURL_CF_SSL_DEFAULT);
@ -3857,7 +3862,6 @@ CURLcode Curl_connect(struct Curl_easy *data,
CURLcode result;
struct connectdata *conn;
bool reused = FALSE;
bool use_slist = TRUE; /* start by attempting to use the slist */
#ifndef CURL_DISABLE_ALTSVC
if(data->asi)
@ -3877,27 +3881,6 @@ CURLcode Curl_connect(struct Curl_easy *data,
DEBUGASSERT(!conn);
return result;
}
result = create_conn(data, &conn, asyncp, &use_slist);
#ifndef CURL_DISABLE_ALTSVC
/* if we failed because of the avc cache retry */
if(result && data-> asi
&& data->asi->used
&& !(data-> asi-> flags & CURLALTSVC_NO_RETRY)
) {
infof(data, "Alt-Svc connection failed, retrying with original target");
if(conn && result != CURLE_NO_CONNECTION_AVAILABLE) {
Curl_detach_connection(data);
Curl_conn_terminate(data, conn, TRUE);
}
Curl_req_hard_reset(&data->req, data);
result = create_conn(data, &conn, asyncp);
}
#endif
if(!result) {
DEBUGASSERT(conn);

View file

@ -281,8 +281,7 @@ test3200 test3201 test3202 test3203 test3204 test3205 test3207 test3208 \
test3209 test3210 test3211 test3212 test3213 test3214 test3215 \
test3209 test3210 test3211 test3212 test3213 test3214 \
\
test3300 test3301 test3302 test3303\
\
test3300 test3301 test3302 test3303 \
test4000 test4001
EXTRA_DIST = $(TESTCASES) DISABLED

View file

@ -68,6 +68,12 @@ Content-Length: 6
-foo-
</stdout>
<protocol>
CONNECT %HOSTIP:%NOLISTENPORT HTTP/1.1
Host: %HOSTIP:%NOLISTENPORT
User-Agent: curl/%VERSION
Proxy-Connection: Keep-Alive
[DISCONNECT]
GET http://test.remote.haxx.se.%TESTNUMBER:8990/ HTTP/1.1
Host: test.remote.haxx.se.%TESTNUMBER:8990
User-Agent: curl/%VERSION

View file

@ -107,4 +107,4 @@ TESTS_C = \
lib3010.c lib3025.c lib3026.c lib3027.c lib3033.c lib3034.c \
lib3100.c lib3101.c lib3102.c lib3103.c lib3104.c lib3105.c \
lib3207.c lib3208.c \
lib3303.c
lib3303.c

View file

@ -1,210 +0,0 @@
#! /bin/bash
# lib3303 - temporary wrapper script for .libs/lib3303
# Generated by libtool (GNU libtool) 2.4.7 Debian-2.4.7-7build1
#
# The lib3303 program cannot be directly executed until all the libtool
# libraries that it depends on are installed.
#
# This wrapper script should never be moved out of the build directory.
# If it is, it will not operate correctly.
# Sed substitution that helps us do robust quoting. It backslashifies
# metacharacters that are still active within double-quoted strings.
sed_quote_subst='s|\([`"$\\]\)|\\\1|g'
# Be Bourne compatible
if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
emulate sh
NULLCMD=:
# Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which
# is contrary to our usage. Disable this feature.
alias -g '${1+"$@"}'='"$@"'
setopt NO_GLOB_SUBST
else
case `(set -o) 2>/dev/null` in *posix*) set -o posix;; esac
fi
BIN_SH=xpg4; export BIN_SH # for Tru64
DUALCASE=1; export DUALCASE # for MKS sh
# The HP-UX ksh and POSIX shell print the target directory to stdout
# if CDPATH is set.
(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
relink_command=""
# This environment variable determines our operation mode.
if test "$libtool_install_magic" = "%%%MAGIC variable%%%"; then
# install mode needs the following variables:
generated_by_libtool_version='2.4.7'
notinst_deplibs=' ../../lib/libcurl.la'
else
# When we are sourced in execute mode, $file and $ECHO are already set.
if test "$libtool_execute_magic" != "%%%MAGIC variable%%%"; then
file="$0"
# A function that is used when there is no print builtin or printf.
func_fallback_echo ()
{
eval 'cat <<_LTECHO_EOF
$1
_LTECHO_EOF'
}
ECHO="printf %s\\n"
fi
# Very basic option parsing. These options are (a) specific to
# the libtool wrapper, (b) are identical between the wrapper
# /script/ and the wrapper /executable/ that is used only on
# windows platforms, and (c) all begin with the string --lt-
# (application programs are unlikely to have options that match
# this pattern).
#
# There are only two supported options: --lt-debug and
# --lt-dump-script. There is, deliberately, no --lt-help.
#
# The first argument to this parsing function should be the
# script's ../../libtool value, followed by no.
lt_option_debug=
func_parse_lt_options ()
{
lt_script_arg0=$0
shift
for lt_opt
do
case "$lt_opt" in
--lt-debug) lt_option_debug=1 ;;
--lt-dump-script)
lt_dump_D=`$ECHO "X$lt_script_arg0" | /usr/bin/sed -e 's/^X//' -e 's%/[^/]*$%%'`
test "X$lt_dump_D" = "X$lt_script_arg0" && lt_dump_D=.
lt_dump_F=`$ECHO "X$lt_script_arg0" | /usr/bin/sed -e 's/^X//' -e 's%^.*/%%'`
cat "$lt_dump_D/$lt_dump_F"
exit 0
;;
--lt-*)
$ECHO "Unrecognized --lt- option: '$lt_opt'" 1>&2
exit 1
;;
esac
done
# Print the debug banner immediately:
if test -n "$lt_option_debug"; then
echo "lib3303:lib3303:$LINENO: libtool wrapper (GNU libtool) 2.4.7 Debian-2.4.7-7build1" 1>&2
fi
}
# Used when --lt-debug. Prints its arguments to stdout
# (redirection is the responsibility of the caller)
func_lt_dump_args ()
{
lt_dump_args_N=1;
for lt_arg
do
$ECHO "lib3303:lib3303:$LINENO: newargv[$lt_dump_args_N]: $lt_arg"
lt_dump_args_N=`expr $lt_dump_args_N + 1`
done
}
# Core function for launching the target application
func_exec_program_core ()
{
if test -n "$lt_option_debug"; then
$ECHO "lib3303:lib3303:$LINENO: newargv[0]: $progdir/$program" 1>&2
func_lt_dump_args ${1+"$@"} 1>&2
fi
exec "$progdir/$program" ${1+"$@"}
$ECHO "$0: cannot exec $program $*" 1>&2
exit 1
}
# A function to encapsulate launching the target application
# Strips options in the --lt-* namespace from $@ and
# launches target application with the remaining arguments.
func_exec_program ()
{
case " $* " in
*\ --lt-*)
for lt_wr_arg
do
case $lt_wr_arg in
--lt-*) ;;
*) set x "$@" "$lt_wr_arg"; shift;;
esac
shift
done ;;
esac
func_exec_program_core ${1+"$@"}
}
# Parse options
func_parse_lt_options "$0" ${1+"$@"}
# Find the directory that this script lives in.
thisdir=`$ECHO "$file" | /usr/bin/sed 's%/[^/]*$%%'`
test "x$thisdir" = "x$file" && thisdir=.
# Follow symbolic links until we get to the real thisdir.
file=`ls -ld "$file" | /usr/bin/sed -n 's/.*-> //p'`
while test -n "$file"; do
destdir=`$ECHO "$file" | /usr/bin/sed 's%/[^/]*$%%'`
# If there was a directory component, then change thisdir.
if test "x$destdir" != "x$file"; then
case "$destdir" in
[\\/]* | [A-Za-z]:[\\/]*) thisdir="$destdir" ;;
*) thisdir="$thisdir/$destdir" ;;
esac
fi
file=`$ECHO "$file" | /usr/bin/sed 's%^.*/%%'`
file=`ls -ld "$thisdir/$file" | /usr/bin/sed -n 's/.*-> //p'`
done
# Usually 'no', except on cygwin/mingw when embedded into
# the cwrapper.
WRAPPER_SCRIPT_BELONGS_IN_OBJDIR=no
if test "$WRAPPER_SCRIPT_BELONGS_IN_OBJDIR" = "yes"; then
# special case for '.'
if test "$thisdir" = "."; then
thisdir=`pwd`
fi
# remove .libs from thisdir
case "$thisdir" in
*[\\/].libs ) thisdir=`$ECHO "$thisdir" | /usr/bin/sed 's%[\\/][^\\/]*$%%'` ;;
.libs ) thisdir=. ;;
esac
fi
# Try to get the absolute directory name.
absdir=`cd "$thisdir" && pwd`
test -n "$absdir" && thisdir="$absdir"
program='lib3303'
progdir="$thisdir/.libs"
if test -f "$progdir/$program"; then
# Add our own library path to LD_LIBRARY_PATH
LD_LIBRARY_PATH="/home/user/Desktop/open_source_work/curl/lib/.libs:$LD_LIBRARY_PATH"
# Some systems cannot cope with colon-terminated LD_LIBRARY_PATH
# The second colon is a workaround for a bug in BeOS R4 sed
LD_LIBRARY_PATH=`$ECHO "$LD_LIBRARY_PATH" | /usr/bin/sed 's/::*$//'`
export LD_LIBRARY_PATH
if test "$libtool_execute_magic" != "%%%MAGIC variable%%%"; then
# Run the actual program with our arguments.
func_exec_program ${1+"$@"}
fi
else
# The program doesn't exist.
$ECHO "$0: error: '$progdir/$program' does not exist" 1>&2
$ECHO "This script is just a wrapper for $program." 1>&2
$ECHO "See the libtool documentation for more information." 1>&2
exit 1
fi
fi

View file

@ -21,13 +21,12 @@
* SPDX-License-Identifier: curl
*
***************************************************************************/
/* testing the CURLALTSVC_NO_RETRY flag */
#include "first.h"
#include "memdebug.h"
/* testing the CURLALTSVC_NO_RETRY flag */
static CURLcode test_lib3303(char *URL)
{
CURL *curl;