Merge pull request #3062 from danh-arm/dh/drop-cla-2.7
[backport 2.7] Drop requirement for a CLA
diff --git a/programs/ssl/ssl_client2.c b/programs/ssl/ssl_client2.c
index c63c4f7..08b6c8e 100644
--- a/programs/ssl/ssl_client2.c
+++ b/programs/ssl/ssl_client2.c
@@ -108,6 +108,7 @@
#define DFL_FALLBACK -1
#define DFL_EXTENDED_MS -1
#define DFL_ETM -1
+#define DFL_SKIP_CLOSE_NOTIFY 0
#define GET_REQUEST "GET %s HTTP/1.0\r\nExtra-header: "
#define GET_REQUEST_END "\r\n\r\n"
@@ -256,6 +257,7 @@
" options: 1 (non-blocking), 2 (added delays)\n" \
" read_timeout=%%d default: 0 ms (no timeout)\n" \
" max_resend=%%d default: 0 (no resend on timeout)\n" \
+ " skip_close_notify=%%d default: 0 (send close_notify)\n" \
"\n" \
USAGE_DTLS \
"\n" \
@@ -344,6 +346,7 @@
int fallback; /* is this a fallback connection? */
int extended_ms; /* negotiate extended master secret? */
int etm; /* negotiate encrypt then mac? */
+ int skip_close_notify; /* skip sending the close_notify alert */
} opt;
static void my_debug( void *ctx, int level,
@@ -562,6 +565,7 @@
opt.fallback = DFL_FALLBACK;
opt.extended_ms = DFL_EXTENDED_MS;
opt.etm = DFL_ETM;
+ opt.skip_close_notify = DFL_SKIP_CLOSE_NOTIFY;
for( i = 1; i < argc; i++ )
{
@@ -864,6 +868,12 @@
if( opt.dhmlen < 0 )
goto usage;
}
+ else if( strcmp( p, "skip_close_notify" ) == 0 )
+ {
+ opt.skip_close_notify = atoi( q );
+ if( opt.skip_close_notify < 0 || opt.skip_close_notify > 1 )
+ goto usage;
+ }
else
goto usage;
}
@@ -1733,10 +1743,25 @@
mbedtls_printf( " . Closing the connection..." );
fflush( stdout );
- /* No error checking, the connection might be closed already */
- do ret = mbedtls_ssl_close_notify( &ssl );
- while( ret == MBEDTLS_ERR_SSL_WANT_WRITE );
- ret = 0;
+ /*
+ * Most of the time sending a close_notify before closing is the right
+ * thing to do. However, when the server already knows how many messages
+ * are expected and closes the connection by itself, this alert becomes
+ * redundant. Sometimes with DTLS this redundancy becomes a problem by
+ * leading to a race condition where the server might close the connection
+ * before seeing the alert, and since UDP is connection-less when the
+ * alert arrives it will be seen as a new connection, which will fail as
+ * the alert is clearly not a valid ClientHello. This may cause spurious
+ * failures in tests that use DTLS and resumption with ssl_server2 in
+ * ssl-opt.sh, avoided by enabling skip_close_notify client-side.
+ */
+ if( opt.skip_close_notify == 0 )
+ {
+ /* No error checking, the connection might be closed already */
+ do ret = mbedtls_ssl_close_notify( &ssl );
+ while( ret == MBEDTLS_ERR_SSL_WANT_WRITE );
+ ret = 0;
+ }
mbedtls_printf( " done\n" );
diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index 26ea124..9bb5bd8 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -1394,7 +1394,7 @@
run_test "Session resume using tickets, DTLS: basic" \
"$P_SRV debug_level=3 dtls=1 tickets=1" \
- "$P_CLI debug_level=3 dtls=1 tickets=1 reconnect=1" \
+ "$P_CLI debug_level=3 dtls=1 tickets=1 reconnect=1 skip_close_notify=1" \
0 \
-c "client hello, adding session ticket extension" \
-s "found session ticket extension" \
@@ -1408,7 +1408,7 @@
run_test "Session resume using tickets, DTLS: cache disabled" \
"$P_SRV debug_level=3 dtls=1 tickets=1 cache_max=0" \
- "$P_CLI debug_level=3 dtls=1 tickets=1 reconnect=1" \
+ "$P_CLI debug_level=3 dtls=1 tickets=1 reconnect=1 skip_close_notify=1" \
0 \
-c "client hello, adding session ticket extension" \
-s "found session ticket extension" \
@@ -1422,7 +1422,7 @@
run_test "Session resume using tickets, DTLS: timeout" \
"$P_SRV debug_level=3 dtls=1 tickets=1 cache_max=0 ticket_timeout=1" \
- "$P_CLI debug_level=3 dtls=1 tickets=1 reconnect=1 reco_delay=2" \
+ "$P_CLI debug_level=3 dtls=1 tickets=1 reconnect=1 skip_close_notify=1 reco_delay=2" \
0 \
-c "client hello, adding session ticket extension" \
-s "found session ticket extension" \
@@ -1554,7 +1554,7 @@
run_test "Session resume using cache, DTLS: tickets enabled on client" \
"$P_SRV dtls=1 debug_level=3 tickets=0" \
- "$P_CLI dtls=1 debug_level=3 tickets=1 reconnect=1" \
+ "$P_CLI dtls=1 debug_level=3 tickets=1 reconnect=1 skip_close_notify=1" \
0 \
-c "client hello, adding session ticket extension" \
-s "found session ticket extension" \
@@ -1568,7 +1568,7 @@
run_test "Session resume using cache, DTLS: tickets enabled on server" \
"$P_SRV dtls=1 debug_level=3 tickets=1" \
- "$P_CLI dtls=1 debug_level=3 tickets=0 reconnect=1" \
+ "$P_CLI dtls=1 debug_level=3 tickets=0 reconnect=1 skip_close_notify=1" \
0 \
-C "client hello, adding session ticket extension" \
-S "found session ticket extension" \
@@ -1582,7 +1582,7 @@
run_test "Session resume using cache, DTLS: cache_max=0" \
"$P_SRV dtls=1 debug_level=3 tickets=0 cache_max=0" \
- "$P_CLI dtls=1 debug_level=3 tickets=0 reconnect=1" \
+ "$P_CLI dtls=1 debug_level=3 tickets=0 reconnect=1 skip_close_notify=1" \
0 \
-S "session successfully restored from cache" \
-S "session successfully restored from ticket" \
@@ -1591,7 +1591,7 @@
run_test "Session resume using cache, DTLS: cache_max=1" \
"$P_SRV dtls=1 debug_level=3 tickets=0 cache_max=1" \
- "$P_CLI dtls=1 debug_level=3 tickets=0 reconnect=1" \
+ "$P_CLI dtls=1 debug_level=3 tickets=0 reconnect=1 skip_close_notify=1" \
0 \
-s "session successfully restored from cache" \
-S "session successfully restored from ticket" \
@@ -1600,7 +1600,7 @@
run_test "Session resume using cache, DTLS: timeout > delay" \
"$P_SRV dtls=1 debug_level=3 tickets=0" \
- "$P_CLI dtls=1 debug_level=3 tickets=0 reconnect=1 reco_delay=0" \
+ "$P_CLI dtls=1 debug_level=3 tickets=0 reconnect=1 skip_close_notify=1 reco_delay=0" \
0 \
-s "session successfully restored from cache" \
-S "session successfully restored from ticket" \
@@ -1609,7 +1609,7 @@
run_test "Session resume using cache, DTLS: timeout < delay" \
"$P_SRV dtls=1 debug_level=3 tickets=0 cache_timeout=1" \
- "$P_CLI dtls=1 debug_level=3 tickets=0 reconnect=1 reco_delay=2" \
+ "$P_CLI dtls=1 debug_level=3 tickets=0 reconnect=1 skip_close_notify=1 reco_delay=2" \
0 \
-S "session successfully restored from cache" \
-S "session successfully restored from ticket" \
@@ -1618,7 +1618,7 @@
run_test "Session resume using cache, DTLS: no timeout" \
"$P_SRV dtls=1 debug_level=3 tickets=0 cache_timeout=0" \
- "$P_CLI dtls=1 debug_level=3 tickets=0 reconnect=1 reco_delay=2" \
+ "$P_CLI dtls=1 debug_level=3 tickets=0 reconnect=1 skip_close_notify=1 reco_delay=2" \
0 \
-s "session successfully restored from cache" \
-S "session successfully restored from ticket" \
@@ -5239,9 +5239,9 @@
client_needs_more_time 2
run_test "DTLS proxy: 3d (drop, delay, duplicate), \"short\" PSK handshake" \
-p "$P_PXY drop=5 delay=5 duplicate=5" \
- "$P_SRV dtls=1 hs_timeout=250-10000 tickets=0 auth_mode=none \
+ "$P_SRV dtls=1 hs_timeout=500-10000 tickets=0 auth_mode=none \
psk=abc123" \
- "$P_CLI dtls=1 hs_timeout=250-10000 tickets=0 psk=abc123 \
+ "$P_CLI dtls=1 hs_timeout=500-10000 tickets=0 psk=abc123 \
force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
0 \
-s "Extra-header:" \
@@ -5250,8 +5250,8 @@
client_needs_more_time 2
run_test "DTLS proxy: 3d, \"short\" RSA handshake" \
-p "$P_PXY drop=5 delay=5 duplicate=5" \
- "$P_SRV dtls=1 hs_timeout=250-10000 tickets=0 auth_mode=none" \
- "$P_CLI dtls=1 hs_timeout=250-10000 tickets=0 \
+ "$P_SRV dtls=1 hs_timeout=500-10000 tickets=0 auth_mode=none" \
+ "$P_CLI dtls=1 hs_timeout=500-10000 tickets=0 \
force_ciphersuite=TLS-RSA-WITH-AES-128-CBC-SHA" \
0 \
-s "Extra-header:" \
@@ -5260,8 +5260,8 @@
client_needs_more_time 2
run_test "DTLS proxy: 3d, \"short\" (no ticket, no cli_auth) FS handshake" \
-p "$P_PXY drop=5 delay=5 duplicate=5" \
- "$P_SRV dtls=1 hs_timeout=250-10000 tickets=0 auth_mode=none" \
- "$P_CLI dtls=1 hs_timeout=250-10000 tickets=0" \
+ "$P_SRV dtls=1 hs_timeout=500-10000 tickets=0 auth_mode=none" \
+ "$P_CLI dtls=1 hs_timeout=500-10000 tickets=0" \
0 \
-s "Extra-header:" \
-c "HTTP/1.0 200 OK"
@@ -5269,8 +5269,8 @@
client_needs_more_time 2
run_test "DTLS proxy: 3d, FS, client auth" \
-p "$P_PXY drop=5 delay=5 duplicate=5" \
- "$P_SRV dtls=1 hs_timeout=250-10000 tickets=0 auth_mode=required" \
- "$P_CLI dtls=1 hs_timeout=250-10000 tickets=0" \
+ "$P_SRV dtls=1 hs_timeout=500-10000 tickets=0 auth_mode=required" \
+ "$P_CLI dtls=1 hs_timeout=500-10000 tickets=0" \
0 \
-s "Extra-header:" \
-c "HTTP/1.0 200 OK"
@@ -5278,8 +5278,8 @@
client_needs_more_time 2
run_test "DTLS proxy: 3d, FS, ticket" \
-p "$P_PXY drop=5 delay=5 duplicate=5" \
- "$P_SRV dtls=1 hs_timeout=250-10000 tickets=1 auth_mode=none" \
- "$P_CLI dtls=1 hs_timeout=250-10000 tickets=1" \
+ "$P_SRV dtls=1 hs_timeout=500-10000 tickets=1 auth_mode=none" \
+ "$P_CLI dtls=1 hs_timeout=500-10000 tickets=1" \
0 \
-s "Extra-header:" \
-c "HTTP/1.0 200 OK"
@@ -5287,8 +5287,8 @@
client_needs_more_time 2
run_test "DTLS proxy: 3d, max handshake (FS, ticket + client auth)" \
-p "$P_PXY drop=5 delay=5 duplicate=5" \
- "$P_SRV dtls=1 hs_timeout=250-10000 tickets=1 auth_mode=required" \
- "$P_CLI dtls=1 hs_timeout=250-10000 tickets=1" \
+ "$P_SRV dtls=1 hs_timeout=500-10000 tickets=1 auth_mode=required" \
+ "$P_CLI dtls=1 hs_timeout=500-10000 tickets=1" \
0 \
-s "Extra-header:" \
-c "HTTP/1.0 200 OK"
@@ -5296,9 +5296,9 @@
client_needs_more_time 2
run_test "DTLS proxy: 3d, max handshake, nbio" \
-p "$P_PXY drop=5 delay=5 duplicate=5" \
- "$P_SRV dtls=1 hs_timeout=250-10000 nbio=2 tickets=1 \
+ "$P_SRV dtls=1 hs_timeout=500-10000 nbio=2 tickets=1 \
auth_mode=required" \
- "$P_CLI dtls=1 hs_timeout=250-10000 nbio=2 tickets=1" \
+ "$P_CLI dtls=1 hs_timeout=500-10000 nbio=2 tickets=1" \
0 \
-s "Extra-header:" \
-c "HTTP/1.0 200 OK"
@@ -5306,10 +5306,10 @@
client_needs_more_time 4
run_test "DTLS proxy: 3d, min handshake, resumption" \
-p "$P_PXY drop=5 delay=5 duplicate=5" \
- "$P_SRV dtls=1 hs_timeout=250-10000 tickets=0 auth_mode=none \
+ "$P_SRV dtls=1 hs_timeout=500-10000 tickets=0 auth_mode=none \
psk=abc123 debug_level=3" \
- "$P_CLI dtls=1 hs_timeout=250-10000 tickets=0 psk=abc123 \
- debug_level=3 reconnect=1 read_timeout=1000 max_resend=10 \
+ "$P_CLI dtls=1 hs_timeout=500-10000 tickets=0 psk=abc123 \
+ debug_level=3 reconnect=1 skip_close_notify=1 read_timeout=1000 max_resend=10 \
force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
0 \
-s "a session has been resumed" \
@@ -5320,10 +5320,10 @@
client_needs_more_time 4
run_test "DTLS proxy: 3d, min handshake, resumption, nbio" \
-p "$P_PXY drop=5 delay=5 duplicate=5" \
- "$P_SRV dtls=1 hs_timeout=250-10000 tickets=0 auth_mode=none \
+ "$P_SRV dtls=1 hs_timeout=500-10000 tickets=0 auth_mode=none \
psk=abc123 debug_level=3 nbio=2" \
- "$P_CLI dtls=1 hs_timeout=250-10000 tickets=0 psk=abc123 \
- debug_level=3 reconnect=1 read_timeout=1000 max_resend=10 \
+ "$P_CLI dtls=1 hs_timeout=500-10000 tickets=0 psk=abc123 \
+ debug_level=3 reconnect=1 skip_close_notify=1 read_timeout=1000 max_resend=10 \
force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8 nbio=2" \
0 \
-s "a session has been resumed" \
@@ -5335,9 +5335,9 @@
requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
run_test "DTLS proxy: 3d, min handshake, client-initiated renego" \
-p "$P_PXY drop=5 delay=5 duplicate=5" \
- "$P_SRV dtls=1 hs_timeout=250-10000 tickets=0 auth_mode=none \
+ "$P_SRV dtls=1 hs_timeout=500-10000 tickets=0 auth_mode=none \
psk=abc123 renegotiation=1 debug_level=2" \
- "$P_CLI dtls=1 hs_timeout=250-10000 tickets=0 psk=abc123 \
+ "$P_CLI dtls=1 hs_timeout=500-10000 tickets=0 psk=abc123 \
renegotiate=1 debug_level=2 \
force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
0 \
@@ -5350,9 +5350,9 @@
requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
run_test "DTLS proxy: 3d, min handshake, client-initiated renego, nbio" \
-p "$P_PXY drop=5 delay=5 duplicate=5" \
- "$P_SRV dtls=1 hs_timeout=250-10000 tickets=0 auth_mode=none \
+ "$P_SRV dtls=1 hs_timeout=500-10000 tickets=0 auth_mode=none \
psk=abc123 renegotiation=1 debug_level=2" \
- "$P_CLI dtls=1 hs_timeout=250-10000 tickets=0 psk=abc123 \
+ "$P_CLI dtls=1 hs_timeout=500-10000 tickets=0 psk=abc123 \
renegotiate=1 debug_level=2 \
force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
0 \
@@ -5365,10 +5365,10 @@
requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
run_test "DTLS proxy: 3d, min handshake, server-initiated renego" \
-p "$P_PXY drop=5 delay=5 duplicate=5" \
- "$P_SRV dtls=1 hs_timeout=250-10000 tickets=0 auth_mode=none \
+ "$P_SRV dtls=1 hs_timeout=500-10000 tickets=0 auth_mode=none \
psk=abc123 renegotiate=1 renegotiation=1 exchanges=4 \
debug_level=2" \
- "$P_CLI dtls=1 hs_timeout=250-10000 tickets=0 psk=abc123 \
+ "$P_CLI dtls=1 hs_timeout=500-10000 tickets=0 psk=abc123 \
renegotiation=1 exchanges=4 debug_level=2 \
force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
0 \
@@ -5381,10 +5381,10 @@
requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
run_test "DTLS proxy: 3d, min handshake, server-initiated renego, nbio" \
-p "$P_PXY drop=5 delay=5 duplicate=5" \
- "$P_SRV dtls=1 hs_timeout=250-10000 tickets=0 auth_mode=none \
+ "$P_SRV dtls=1 hs_timeout=500-10000 tickets=0 auth_mode=none \
psk=abc123 renegotiate=1 renegotiation=1 exchanges=4 \
debug_level=2 nbio=2" \
- "$P_CLI dtls=1 hs_timeout=250-10000 tickets=0 psk=abc123 \
+ "$P_CLI dtls=1 hs_timeout=500-10000 tickets=0 psk=abc123 \
renegotiation=1 exchanges=4 debug_level=2 nbio=2 \
force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
0 \
@@ -5398,7 +5398,7 @@
run_test "DTLS proxy: 3d, openssl server" \
-p "$P_PXY drop=5 delay=5 duplicate=5 protect_hvr=1" \
"$O_SRV -dtls1 -mtu 2048" \
- "$P_CLI dtls=1 hs_timeout=250-60000 tickets=0" \
+ "$P_CLI dtls=1 hs_timeout=500-60000 tickets=0" \
0 \
-c "HTTP/1.0 200 OK"
@@ -5407,7 +5407,7 @@
run_test "DTLS proxy: 3d, openssl server, fragmentation" \
-p "$P_PXY drop=5 delay=5 duplicate=5 protect_hvr=1" \
"$O_SRV -dtls1 -mtu 768" \
- "$P_CLI dtls=1 hs_timeout=250-60000 tickets=0" \
+ "$P_CLI dtls=1 hs_timeout=500-60000 tickets=0" \
0 \
-c "HTTP/1.0 200 OK"
@@ -5416,7 +5416,7 @@
run_test "DTLS proxy: 3d, openssl server, fragmentation, nbio" \
-p "$P_PXY drop=5 delay=5 duplicate=5 protect_hvr=1" \
"$O_SRV -dtls1 -mtu 768" \
- "$P_CLI dtls=1 hs_timeout=250-60000 nbio=2 tickets=0" \
+ "$P_CLI dtls=1 hs_timeout=500-60000 nbio=2 tickets=0" \
0 \
-c "HTTP/1.0 200 OK"
@@ -5426,7 +5426,7 @@
run_test "DTLS proxy: 3d, gnutls server" \
-p "$P_PXY drop=5 delay=5 duplicate=5" \
"$G_SRV -u --mtu 2048 -a" \
- "$P_CLI dtls=1 hs_timeout=250-60000" \
+ "$P_CLI dtls=1 hs_timeout=500-60000" \
0 \
-s "Extra-header:" \
-c "Extra-header:"
@@ -5437,7 +5437,7 @@
run_test "DTLS proxy: 3d, gnutls server, fragmentation" \
-p "$P_PXY drop=5 delay=5 duplicate=5" \
"$G_SRV -u --mtu 512" \
- "$P_CLI dtls=1 hs_timeout=250-60000" \
+ "$P_CLI dtls=1 hs_timeout=500-60000" \
0 \
-s "Extra-header:" \
-c "Extra-header:"
@@ -5448,7 +5448,7 @@
run_test "DTLS proxy: 3d, gnutls server, fragmentation, nbio" \
-p "$P_PXY drop=5 delay=5 duplicate=5" \
"$G_SRV -u --mtu 512" \
- "$P_CLI dtls=1 hs_timeout=250-60000 nbio=2" \
+ "$P_CLI dtls=1 hs_timeout=500-60000 nbio=2" \
0 \
-s "Extra-header:" \
-c "Extra-header:"