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-rw-r--r--lib/ssl/src/ssl_handshake.erl3
-rw-r--r--lib/ssl/test/ssl_handshake_SUITE.erl8
2 files changed, 11 insertions, 0 deletions
diff --git a/lib/ssl/src/ssl_handshake.erl b/lib/ssl/src/ssl_handshake.erl
index 0c9022b85d..07535e79b4 100644
--- a/lib/ssl/src/ssl_handshake.erl
+++ b/lib/ssl/src/ssl_handshake.erl
@@ -1733,6 +1733,9 @@ dec_hello_extensions(<<?UINT16(?EC_POINT_FORMATS_EXT), ?UINT16(Len),
#ec_point_formats{ec_point_format_list =
ECPointFormats}});
+dec_hello_extensions(<<?UINT16(?SNI_EXT), ?UINT16(Len), Rest/binary>>, Acc) when Len == 0 ->
+ dec_hello_extensions(Rest, Acc#hello_extensions{sni = ""}); %% Server may send an empy SNI
+
dec_hello_extensions(<<?UINT16(?SNI_EXT), ?UINT16(Len),
ExtData:Len/binary, Rest/binary>>, Acc) ->
<<?UINT16(_), NameList/binary>> = ExtData,
diff --git a/lib/ssl/test/ssl_handshake_SUITE.erl b/lib/ssl/test/ssl_handshake_SUITE.erl
index e5e942ce1b..8dca733526 100644
--- a/lib/ssl/test/ssl_handshake_SUITE.erl
+++ b/lib/ssl/test/ssl_handshake_SUITE.erl
@@ -39,6 +39,7 @@ all() -> [decode_hello_handshake,
decode_unknown_hello_extension_correctly,
encode_single_hello_sni_extension_correctly,
decode_single_hello_sni_extension_correctly,
+ decode_empty_server_sni_correctly,
select_proper_tls_1_2_rsa_default_hashsign].
%%--------------------------------------------------------------------
@@ -106,6 +107,13 @@ decode_single_hello_sni_extension_correctly(_Config) ->
Decoded = ssl_handshake:decode_hello_extensions(SNI),
Exts = Decoded.
+decode_empty_server_sni_correctly(_Config) ->
+ Exts = #hello_extensions{sni = ""},
+ SNI = <<?UINT16(?SNI_EXT),?UINT16(0)>>,
+ Decoded = ssl_handshake:decode_hello_extensions(SNI),
+ Exts = Decoded.
+
+
select_proper_tls_1_2_rsa_default_hashsign(_Config) ->
% RFC 5246 section 7.4.1.4.1 tells to use {sha1,rsa} as default signature_algorithm for RSA key exchanges
{sha, rsa} = ssl_handshake:select_hashsign_algs(undefined, ?rsaEncryption, {3,3}),