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This commit addresses TLSv1.3 servers that do not support session tickets by that support session resumption by ID, but only with TLSv1.2 or earlier.
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David Cooper 2019-10-01 16:25:51 -04:00 committed by GitHub
parent 0fe60e82a8
commit 644d7c839e
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1 changed files with 15 additions and 4 deletions
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testssl.sh
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@ -6068,10 +6068,21 @@ sub_session_resumption() {
fi
fi
"$CLIENT_AUTH" && return 3
protocol=${protocol/\./_}
protocol=${protocol/v/}
protocol="-$(tolower $protocol)"
"$HAS_NO_SSL2" && addcmd+=" -no_ssl2" || addcmd+=" $protocol"
if "$HAS_NO_SSL2"; then
addcmd+=" -no_ssl2"
else
protocol=${protocol/\./_}
protocol=${protocol/v/}
protocol="-$(tolower $protocol)"
# In some cases a server will not support session tickets, but will support session resumption
# by ID. In such a case, it may be more likely to support session resumption with TLSv1.2 than
# with TLSv1.3. So, if testing a server that does not support session tickets and that supports
# both TLSv1.3 and TLSv1.2 for session resumption by ID, then use a TLSv1.2 ClientHello. (Note that
# the line below assumes that if $protocol is -tls1_3, then the server either supports TLSv1.2 or
# is TLSv1.3-only.
! "$TLS_TICKETS" && "$byID" && [[ $(has_server_protocol "tls1_2") -eq 0 ]] && protocol="-tls1_2"
addcmd+=" $protocol"
fi
$OPENSSL s_client $(s_client_options "$STARTTLS $BUGS -connect $NODEIP:$PORT $PROXY $SNI $addcmd -sess_out $sess_data") </dev/null &>/dev/null
ret1=$?