--- /dev/null
+#!/bin/sh
+
+# Copyright (C) 2025 Red Hat, Inc.
+#
+# Author: Daiki Ueno
+#
+# This file is part of GnuTLS.
+#
+# GnuTLS is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 3 of the License, or (at
+# your option) any later version.
+#
+# GnuTLS is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this program. If not, see <https://www.gnu.org/licenses/>
+#
+
+: ${srcdir=.}
+: ${SERV=../src/gnutls-serv${EXEEXT}}
+: ${CLI=../src/gnutls-cli${EXEEXT}}
+unset RETCODE
+
+if ! test -x "$SERV"; then
+ exit 77
+fi
+
+if ! test -x "$CLI"; then
+ exit 77
+fi
+
+if test "$WINDIR" != ""; then
+ exit 77
+fi
+
+if test -n "$VALGRIND"; then
+ VALGRIND="${LIBTOOL:-libtool} --mode=execute $VALGRIND --error-exitcode=1"
+fi
+
+SERV="$SERV -q"
+
+. "$srcdir/scripts/common.sh"
+
+: ${ac_cv_sizeof_time_t=8}
+if test "$ac_cv_sizeof_time_t" -ge 8; then
+ ATTIME_VALID="2038-10-12" # almost the pregenerated cert expiration
+else
+ ATTIME_VALID="2030-12-17" # end of epoch − 2590 days of validity
+fi
+
+testdir=`create_testdir earlydata`
+KEY="$srcdir/../doc/credentials/x509/key-ecc.pem"
+CERT="$srcdir/../doc/credentials/x509/cert-ecc.pem"
+CACERT="$srcdir/../doc/credentials/x509/ca.pem"
+
+eval "$GETPORT"
+launch_server --echo --x509keyfile "$KEY" --x509certfile "$CERT" --disable-client-cert --earlydata --maxearlydata 1000
+PID=$!
+wait_server "$PID"
+
+echo "This is a test message" > "$testdir/earlydata.txt"
+
+$VALGRIND "$CLI" --attime="$ATTIME_VALID" -p "$PORT" localhost --logfile="$testdir/cli.log" --priority="NORMAL:-VERS-ALL:+VERS-TLS1.3" --x509cafile "$CACERT" --resume --waitresumption --earlydata="$testdir/earlydata.txt" </dev/null >"$testdir/cli.out"
+if test $? -ne 0; then
+ cat "$testdir/cli.log"
+ fail "$PID" "failed to communicate with the server"
+fi
+
+if ! grep "This is a resumed session" "$testdir/cli.log" > /dev/null; then
+ fail "$PID" "session is not resumed"
+fi
+
+if ! cmp "$testdir/earlydata.txt" "$testdir/cli.out" > /dev/null; then
+ fail "$PID" "early data has not been sent back"
+fi
+
+kill "$PID"
+wait
+
+exit 0