diff --git a/asio/include/asio/detail/impl/posix_thread.ipp b/asio/include/asio/detail/impl/posix_thread.ipp
index 7602377336..d1c1333c3f 100644
--- a/asio/include/asio/detail/impl/posix_thread.ipp
+++ b/asio/include/asio/detail/impl/posix_thread.ipp
@@ -3,6 +3,7 @@
 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 //
 // Copyright (c) 2003-2024 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+// Copyright (c) 2024, BlackBerry Limited. Pavlo Kleymonov (pkleymonov at blackberry com)
 //
 // Distributed under the Boost Software License, Version 1.0. (See accompanying
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
@@ -47,6 +48,11 @@ std::size_t posix_thread::hardware_concurrency()
 {
 #if defined(_SC_NPROCESSORS_ONLN)
   long result = sysconf(_SC_NPROCESSORS_ONLN);
+
+#if defined(__QNX__)
+  result &= 0xFFFFFFFF;
+#endif //defined(__QNX__)
+
   if (result > 0)
     return result;
 #endif // defined(_SC_NPROCESSORS_ONLN)
diff --git a/asio/include/asio/detail/socket_types.hpp b/asio/include/asio/detail/socket_types.hpp
index cf4f746a44..2c1e0354bd 100644
--- a/asio/include/asio/detail/socket_types.hpp
+++ b/asio/include/asio/detail/socket_types.hpp
@@ -3,6 +3,7 @@
 // ~~~~~~~~~~~~~~~~~~~~~~~
 //
 // Copyright (c) 2003-2024 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+// Copyright (c) 2024, BlackBerry Limited. Pavlo Kleymonov (pkleymonov at blackberry com)
 //
 // Distributed under the Boost Software License, Version 1.0. (See accompanying
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
@@ -411,7 +412,13 @@ const int max_iov_len = IOV_MAX;
 // POSIX platforms are not required to define IOV_MAX.
 const int max_iov_len = 16;
 # endif
-# define ASIO_OS_DEF_SA_RESTART SA_RESTART
+// Note: QNX does not support SA_RESTART
+// Therefore they are specifically excluded here.
+# if defined(__QNX__)
+#  define ASIO_OS_DEF_SA_RESTART 0
+# else
+#  define ASIO_OS_DEF_SA_RESTART SA_RESTART
+# endif
 # define ASIO_OS_DEF_SA_NOCLDSTOP SA_NOCLDSTOP
 # define ASIO_OS_DEF_SA_NOCLDWAIT SA_NOCLDWAIT
 #endif
diff --git a/asio/qnx/.gitignore b/asio/qnx/.gitignore
new file mode 100644
index 0000000000..7f50d71955
--- /dev/null
+++ b/asio/qnx/.gitignore
@@ -0,0 +1,6 @@
+# QNX Build Files
+build/nto-aarch64-le/*
+build/nto-x86_64-o/*
+!build/Makefile
+!build/nto-aarch64-le/GNUmakefile
+!build/nto-x86_64-o/GNUmakefile
diff --git a/asio/qnx/README.md b/asio/qnx/README.md
new file mode 100644
index 0000000000..63c6210d4f
--- /dev/null
+++ b/asio/qnx/README.md
@@ -0,0 +1,30 @@
+# Compile the port for QNX
+
+**NOTE**: QNX ports are only supported from a **Linux host** operating system
+
+### Install dependencies
+
+`sudo apt install automake`
+
+`sudo apt install pkg-config`
+
+### Switch to asio main folder
+
+`cd asio`
+
+### Generate GNU build tool ./configure and all needed Makefiles
+
+`./autogen.sh`
+
+### Setup QNX SDP environment
+
+`source <path-to-sdp>/qnxsdp-env.sh`
+
+### Build examples and install asio headers into SDP
+
+`JLEVEL=$(nproc) make -C qnx/build install`
+
+
+**All asio headers have to be installed to SDP**
+* $QNX_TARGET/usr/include/asio/
+* $QNX_TARGET/usr/include/asio.hpp
diff --git a/asio/qnx/build/Makefile b/asio/qnx/build/Makefile
new file mode 100644
index 0000000000..1a7ac1e0fe
--- /dev/null
+++ b/asio/qnx/build/Makefile
@@ -0,0 +1,3 @@
+LIST=OS CPU VARIANT
+MAKEFILE=GNUmakefile
+include recurse.mk
diff --git a/asio/qnx/build/build-hooks b/asio/qnx/build/build-hooks
new file mode 100644
index 0000000000..7dda99a0d8
--- /dev/null
+++ b/asio/qnx/build/build-hooks
@@ -0,0 +1,160 @@
+#!/bin/sh
+
+#
+#	QNX specific build configuration nested level
+#
+NESTED_LEVEL="../../.."
+
+#
+#	Setup of essential configuration parameters
+#
+function hook_preconfigure {
+#
+# QNX specific changes are covered by prediefined '__QNX__'
+#       For examples: "fd_passing_stream_server" and "fd_passing_stream_client"
+#       For the testsuites:  unit/ip/multicast
+#
+	CXXFLAGS="$CXXFLAGS -DASIO_HAS_PTHREADS -DASIO_HAS_STD_STRING_VIEW -DASIO_HAS_CONSTEXPR -DASIO_HAS_STD_FUTURE_CLASS"
+
+#
+#	Add socket library
+#
+	LDFLAGS="$LDFLAGS -lsocket"
+
+#
+#	Distributive directory
+#
+	DIST_BASE="${PWD}/${NESTED_LEVEL}"
+
+#
+#	Setup correct pathes for install and build make commands
+#
+	configure_opts="--srcdir=${DIST_BASE}"
+	configure_opts="${configure_opts} --prefix=${INSTALL_ROOT_nto}/usr"
+	configure_opts="${configure_opts} --exec-prefix=${INSTALL_ROOT_nto}/${cpudir}/usr"
+}
+
+#
+#	Adjust relative path to ./configure tool
+#
+function hook_configure {
+    ${NESTED_LEVEL}/configure \
+        ${ac_host:+"--host=${ac_host}"} \
+        ${ac_build:+"--build=${ac_build}"} \
+        ${configure_opts} \
+        ${ac_params:+${CC:+"CC=${CC}"}} \
+        ${ac_params:+${CFLAGS:+"CFLAGS=-O2 ${CFLAGS}"}} \
+        ${ac_params:+${CPPFLAGS:+"CPPFLAGS=${CPPFLAGS}"}} \
+        ${ac_params:+${LDFLAGS:+"LDFLAGS=${LDFLAGS}"}} \
+        ${ac_params:+${CXX:+"CXX=${CXX}"}} \
+        ${ac_params:+${CXXFLAGS:+"CXXFLAGS=-O2 ${CXXFLAGS}"}} \
+        ${ac_params:+${ac_autotools:+${ac_autotools}}} \
+        || Error "configure failed";
+}
+
+function hook_premake {
+	if [ "${make_cmds}" == "check" ] && [ "${TARGET_SYSNAME}" == "nto" ]; then
+		echo "For target nto suppress tests execution."
+		echo "All tests have to be run on target system."
+		make_opts="${make_opts} TESTS=''"
+	fi
+}
+
+function hook_postmake {
+	red="\033[0;31m"
+	grn="\033[0;32m"
+	yel="\033[1;33m"
+	blu="\033[1;34m"
+	cls="\033[0m"
+	base_build=$PWD
+	base_testsuite="src/tests"
+	base_script="run_testsuites.sh"
+	testsuite_log="test-suite.log"
+	testsuite_script=$base_testsuite/$base_script
+	testsuite_sdp_bin=${INSTALL_ROOT_nto}/${cpudir}/usr/bin/asio_tests
+
+	#
+	# uninstall all asio test from SDP
+	#
+	if [ "${make_cmds}" == "uninstall" ] && [ -d ${testsuite_sdp_bin} ]; then
+		echo "we have to uninstall all asio tests"
+		(set -x; rm -rf ${testsuite_sdp_bin})
+	fi
+
+	#
+	# build and install all asio tests
+	#
+	if [ "${make_cmds}" == "check" ] && [ "${TARGET_SYSNAME}" == "nto" ] && [ "${SYSNAME}" == "linux" ]; then
+		if [ -d ${base_testsuite} ]; then
+
+			echo "${blu}=========================================================================${cls}"
+			echo "${blu}Generate script to run testsuites for the ${cpu}${cls}"
+			echo "${blu}=========================================================================${cls}"
+
+			echo "Remove old testsuite script ..."
+			#(set -x; <command> - print each command before executing )
+			(set -x; rm -f "$testsuite_script")
+
+			echo "Looking for tests executables..."
+			testsuite_list=$(find . -type f -executable | sed -n "s/^\.\/src\/tests\/\(\S*\)$/\1/p")
+
+			pkg_str=$(grep 'PACKAGE_STRING' Makefile | grep -oP '\d+\.\d+\.\d+' | head -1)
+
+			echo "Creating testsuites script..."
+			echo "#!/bin/sh"       > $testsuite_script || Error "Unexpected error during $testsuite_script initialization";
+			echo "_pass=0"        >> $testsuite_script || Error "Unexpected error during $testsuite_script initialization";
+			echo "_fail=0"        >> $testsuite_script || Error "Unexpected error during $testsuite_script initialization";
+			echo "echo \"### Testsuites log file ###\" > $testsuite_log" >> $testsuite_script || Error "Unexpected error during $testsuite_script initialization";
+
+
+			echo "Adding testsuites to the script:'$testsuite_script'..."
+			testsuite_number=0
+			for v in ${testsuite_list}; do
+				testsuite_number=$((testsuite_number+1));
+				echo "### Suite number: $testsuite_number" >> $testsuite_script || Error "Unexpected error during $testsuite_script update by testsuite:'$v'";
+				echo "result=\$($v 2>&1)"                  >> $testsuite_script || Error "Unexpected error during $testsuite_script update by testsuite:'$v'";
+				echo "if [ 0 -eq \$? ]; then"              >> $testsuite_script || Error "Unexpected error during $testsuite_script update by testsuite:'$v'";
+				echo "   _pass=\$((_pass+1))"              >> $testsuite_script || Error "Unexpected error during $testsuite_script update by testsuite:'$v'";
+				echo "   echo \"${grn}PASS${cls}:$v\""     >> $testsuite_script || Error "Unexpected error during $testsuite_script update by testsuite:'$v'";
+				echo "else"                                >> $testsuite_script || Error "Unexpected error during $testsuite_script update by testsuite:'$v'";
+				echo "   _fail=\$((_fail+1))"              >> $testsuite_script || Error "Unexpected error during $testsuite_script update by testsuite:'$v'";
+				echo "   echo \"${red}FAIL${cls}:$v\""     >> $testsuite_script || Error "Unexpected error during $testsuite_script update by testsuite:'$v'";
+				echo "fi"                                  >> $testsuite_script || Error "Unexpected error during $testsuite_script update by testsuite:'$v'";
+				echo "echo \"### Testsuite:$v ###\" >> $testsuite_log" >> $testsuite_script || Error "Unexpected error during $testsuite_script update by testsuite:'$v'";
+				echo "echo \"\${result}\" >> $testsuite_log"           >> $testsuite_script || Error "Unexpected error during $testsuite_script update by testsuite:'$v'";
+				echo "${blu}ADDED${cls}:$v";
+				#
+				# install testsuite into SDP
+				#
+				_dest_folder="${testsuite_sdp_bin}/$(dirname $v)"
+				_source_test="src/tests/$v"
+				[ -d "${_dest_folder}" ] || (set -x; mkdir -p ${_dest_folder})
+				(set -x; cp -f $_source_test $_dest_folder)
+			done
+
+			echo "echo \"${grn}=========================================================================${cls}\"" >> $testsuite_script || Error "Unexpected error during $testsuite_script update";
+			echo "echo \"${grn}Testsuite summary for asio ${pkg_str}${cls}\"" >> $testsuite_script || Error "Unexpected error during $testsuite_script update";
+			echo "echo \"${grn}=========================================================================${cls}\"" >> $testsuite_script || Error "Unexpected error during $testsuite_script update";
+			echo "echo \"# TOTAL: ${testsuite_number}\""  >> $testsuite_script || Error "Unexpected error during $testsuite_script update";
+			echo "echo \"# ${grn}PASS${cls}: \${_pass}\"" >> $testsuite_script || Error "Unexpected error during $testsuite_script update";
+			echo "echo \"# ${red}FAIL${cls}: \${_fail}\"" >> $testsuite_script || Error "Unexpected error during $testsuite_script update";
+			echo "if [ 0 -eq \${_fail} ]; then"           >> $testsuite_script || Error "Unexpected error during $testsuite_script update";
+			echo "echo \"${grn}=========================================================================${cls}\"" >> $testsuite_script || Error "Unexpected error during $testsuite_script update";
+			echo "else"                                   >> $testsuite_script || Error "Unexpected error during $testsuite_script update";
+			echo "echo \"${red}\${_fail} fails see test log:$testsuite_log ${cls}\"" >> $testsuite_script || Error "Unexpected error during $testsuite_script update";
+			echo "fi"                                     >> $testsuite_script || Error "Unexpected error during $testsuite_script update";
+
+			chmod +x $testsuite_script
+
+			#(set -x; <command> - print each command before executing )
+			(set -x; cp -f $testsuite_script $testsuite_sdp_bin)
+
+			echo "${blu}For asio ${pkg_str} total ${testsuite_number} testsuites were added into script:${testsuite_script}${cls}";
+			echo "${blu}All testsuites were installed into '${testsuite_sdp_bin}'${cls}";
+			echo "${blu}To run all tests please copy '${testsuite_sdp_bin}' to the target system and run test script '${testsuite_script}'${cls}";
+		else
+			echo "${red}Error - base testsuite:'${base_build}/${base_testsuite}' for asio ${pkg_str} was not found!${cls}";
+			exit 1;
+		fi
+	fi
+}
diff --git a/asio/qnx/build/nto-aarch64-le/GNUmakefile b/asio/qnx/build/nto-aarch64-le/GNUmakefile
new file mode 100644
index 0000000000..d5e18a78d1
--- /dev/null
+++ b/asio/qnx/build/nto-aarch64-le/GNUmakefile
@@ -0,0 +1,6 @@
+ifndef QCONFIG
+QCONFIG=qconfig.mk
+endif
+include $(QCONFIG)
+
+include $(MKFILES_ROOT)/qmake-cfg.mk
diff --git a/asio/qnx/build/nto-x86_64-o/GNUmakefile b/asio/qnx/build/nto-x86_64-o/GNUmakefile
new file mode 100644
index 0000000000..d5e18a78d1
--- /dev/null
+++ b/asio/qnx/build/nto-x86_64-o/GNUmakefile
@@ -0,0 +1,6 @@
+ifndef QCONFIG
+QCONFIG=qconfig.mk
+endif
+include $(QCONFIG)
+
+include $(MKFILES_ROOT)/qmake-cfg.mk
diff --git a/asio/qnx/test/README.md b/asio/qnx/test/README.md
new file mode 100644
index 0000000000..85d65f4dfa
--- /dev/null
+++ b/asio/qnx/test/README.md
@@ -0,0 +1,60 @@
+# Testing asio lib on QNX
+
+**NOTE**: QNX ports are only supported from a **Linux host** operating system
+
+asio lib normally wants to be tested on the same machine it was built on. This obviously doesn't work when cross-compiling for QNX. The gist is to build, then copy the whole asio lib source tree on a target. This will include all the relevant files and directory structure which asio lib expects when running its test suite.
+
+# Running the Test Suite
+
+### Install dependencies
+
+`sudo apt install automake`
+
+`sudo apt install pkg-config`
+
+### Switch to asio main folder
+
+`cd asio`
+
+### Generate GNU build tool ./configure and all needed Makefiles
+
+`./autogen.sh`
+
+### Setup QNX SDP environment
+
+`source <path-to-sdp>/qnxsdp-env.sh`
+
+### Build and install all asio tests into SDP
+
+`JLEVEL=$(nproc) CPULIST=x86_64 make -C qnx/build check`
+
+### Then build your QNX image using mkqnximage and the following options:
+
+`export ASIO_ROOT=$PWD`
+
+`mkdir test_image && cd test_image`
+
+`mkqnximage --extra-dirs=$ASIO_ROOT/qnx/test/mkqnximage --clean --run --force --test-asio=$QNX_TARGET/x86_64/usr/bin/asio_tests`
+
+### Once the target has booted, the asio tests will be located in /data/asio:
+
+`cd /data/asio`
+
+`./run_testsuites.sh`
+
+### Test execution summary
+`...`
+
+`=========================================================================`
+
+`Testsuite summary for asio 1.29.0`
+
+`=========================================================================`
+
+`# TOTAL: 346`
+
+`# PASS: 346`
+
+`# FAIL: 0`
+
+`=========================================================================`
\ No newline at end of file
diff --git a/asio/qnx/test/mkqnximage/opt_scripts/opt_test_asio b/asio/qnx/test/mkqnximage/opt_scripts/opt_test_asio
new file mode 100755
index 0000000000..1804524247
--- /dev/null
+++ b/asio/qnx/test/mkqnximage/opt_scripts/opt_test_asio
@@ -0,0 +1,79 @@
+#!/bin/bash
+
+. ${TOOL_DIR}/functions
+
+function brief()
+{
+    echo "--test-asio=[no|<path>]"
+}
+
+function help()
+{
+    brief
+    cat <<EOF
+    If this option is given with a <path> to the compiled asio tests tree, the full tree will be imported
+    on the target under /data/asio from which you can execute the asio test suite using:
+
+    cd /data/asio/
+    ./run_testsuites.sh
+
+    NOTE: You must compile the asio source tree of the desired target before building
+    the vm image.
+
+    The default is no.
+EOF
+}
+
+function validate() {
+
+	if [ ${OPT_TEST_ASIO} != "no" ]; then
+		if [ ! -d "${OPT_TEST_ASIO}" ]; then
+			echo "Invalid asio source tree '${OPT_TEST_ASIO}'"
+			exit 1;
+		fi
+	else
+		exit 0;
+	fi
+}
+
+function configure()
+{
+	rm -f output/option_files/*.opt_test_asio
+	if [ "$OPT_TEST_ASIO" != no ]; then
+		if [ "${OPT_VERBOSE}" == "yes" ]; then
+			echo "Building asio file list from ${OPT_TEST_ASIO}"
+		fi
+
+		for f in $(find ${OPT_TEST_ASIO} -type f); do
+			echo "[perms=0755] asio/${f#${OPT_TEST_ASIO}/}=${f}" >> output/option_files/data_files.opt_test_asio
+		done;
+
+		case ${OPT_ARCH} in
+		x86*)
+			ASIO_TEST_PREFIX="nto-${OPT_ARCH}-o";
+			;;
+		*aarch64*)
+			ASIO_TEST_PREFIX="nto-aarch64-le";
+			;;
+		esac
+
+		# export asio options"
+		echo "ASIO_TEST_PREFIX=${ASIO_TEST_PREFIX}" >> output/option_files/ifs_env.opt_test_asio
+
+	fi
+
+	exit 0
+}
+
+case "$1" in
+	brief)
+		brief;;
+	help)
+		help;;
+	validate)
+		validate;;
+	configure)
+		configure;;
+	default)
+		echo no;;
+esac
diff --git a/asio/src/examples/cpp11/local/fd_passing_stream_client.cpp b/asio/src/examples/cpp11/local/fd_passing_stream_client.cpp
index 229509f1c1..cc56b76303 100644
--- a/asio/src/examples/cpp11/local/fd_passing_stream_client.cpp
+++ b/asio/src/examples/cpp11/local/fd_passing_stream_client.cpp
@@ -4,6 +4,7 @@
 //
 // Copyright (c) 2003-2024 Christopher M. Kohlhoff (chris at kohlhoff dot com)
 // Copyright (c) 2021 Heiko Hund (heiko at openvpn dot net)
+// Copyright (c) 2024, BlackBerry Limited. Pavlo Kleymonov (pkleymonov at blackberry com)
 //
 // Distributed under the Boost Software License, Version 1.0. (See accompanying
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
@@ -23,6 +24,14 @@
 #include <sys/types.h>
 #include <sys/socket.h>
 
+#if defined(__QNX__)
+   #undef CMSG_ALIGN
+   #define CMSG_ALIGN(len) (((len) + sizeof (size_t) - 1) & (size_t) ~(sizeof (size_t) - 1))
+
+   #undef CMSG_SPACE
+   #define CMSG_SPACE(len) (CMSG_ALIGN (len) + CMSG_ALIGN (sizeof (struct cmsghdr)))
+#endif //defined(__QNX__)
+
 using asio::local::stream_protocol;
 
 constexpr std::size_t max_length = 1024;
diff --git a/asio/src/examples/cpp11/local/fd_passing_stream_server.cpp b/asio/src/examples/cpp11/local/fd_passing_stream_server.cpp
index 5082185e75..9611db5b5f 100644
--- a/asio/src/examples/cpp11/local/fd_passing_stream_server.cpp
+++ b/asio/src/examples/cpp11/local/fd_passing_stream_server.cpp
@@ -4,6 +4,7 @@
 //
 // Copyright (c) 2003-2024 Christopher M. Kohlhoff (chris at kohlhoff dot com)
 // Copyright (c) 2021 Heiko Hund (heiko at openvpn dot net)
+// Copyright (c) 2024, BlackBerry Limited. Pavlo Kleymonov (pkleymonov at blackberry com)
 //
 // Distributed under the Boost Software License, Version 1.0. (See accompanying
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
@@ -22,6 +23,14 @@
 
 #if defined(ASIO_HAS_LOCAL_SOCKETS)
 
+#if defined(__QNX__)
+   #undef CMSG_ALIGN
+   #define CMSG_ALIGN(len) (((len) + sizeof (size_t) - 1) & (size_t) ~(sizeof (size_t) - 1))
+
+   #undef CMSG_SPACE
+   #define CMSG_SPACE(len) (CMSG_ALIGN (len) + CMSG_ALIGN (sizeof (struct cmsghdr)))
+#endif //defined(__QNX__)
+
 using asio::local::stream_protocol;
 
 class session
diff --git a/asio/src/tests/unit/ip/multicast.cpp b/asio/src/tests/unit/ip/multicast.cpp
index 4f0b3f45e1..c70c7d06b0 100644
--- a/asio/src/tests/unit/ip/multicast.cpp
+++ b/asio/src/tests/unit/ip/multicast.cpp
@@ -3,6 +3,7 @@
 // ~~~~~~~~~~~~~
 //
 // Copyright (c) 2003-2024 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+// Copyright (c) 2024, BlackBerry Limited. Pavlo Kleymonov (pkleymonov at blackberry com)
 //
 // Distributed under the Boost Software License, Version 1.0. (See accompanying
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
@@ -146,17 +147,20 @@ void test()
 #if (defined(__MACH__) && defined(__APPLE__)) \
   || defined(__FreeBSD__) \
   || defined(__NetBSD__) \
-  || defined(__OpenBSD__)
+  || defined(__OpenBSD__) \
+  || defined(__QNX__)
   const ip::address multicast_address_v6 = ip::make_address("ff02::1%lo0", ec);
 #else // (defined(__MACH__) && defined(__APPLE__))
       //   || defined(__FreeBSD__)
       //   || defined(__NetBSD__)
       //   || defined(__OpenBSD__)
+      //   || defined(__QNX__)
   const ip::address multicast_address_v6 = ip::make_address("ff01::1", ec);
 #endif // (defined(__MACH__) && defined(__APPLE__))
        //   || defined(__FreeBSD__)
        //   || defined(__NetBSD__)
        //   || defined(__OpenBSD__)
+       //   || defined(__QNX__)
   ASIO_CHECK(!have_v6 || !ec);
 
   // join_group class.
@@ -207,11 +211,11 @@ void test()
 
   if (have_v6)
   {
-#if defined(__hpux)
+#if defined(__hpux) || defined(__QNX__)
     ip::multicast::outbound_interface outbound_interface(if_nametoindex("lo0"));
 #else
     ip::multicast::outbound_interface outbound_interface(1);
-#endif
+#endif // defined(__hpux) || defined(__QNX__)
     sock_v6.set_option(outbound_interface, ec);
     ASIO_CHECK_MESSAGE(!ec, ec.value() << ", " << ec.message());
   }