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-rw-r--r--lib/ssl/src/ssl_handshake.erl36
1 files changed, 34 insertions, 2 deletions
diff --git a/lib/ssl/src/ssl_handshake.erl b/lib/ssl/src/ssl_handshake.erl
index bca341c8bc..47af1f861c 100644
--- a/lib/ssl/src/ssl_handshake.erl
+++ b/lib/ssl/src/ssl_handshake.erl
@@ -1305,8 +1305,40 @@ handle_server_hello_extensions(RecordCB, Random, CipherSuite, Compression,
end.
select_version(RecordCB, ClientVersion, Versions) ->
- ServerVersion = RecordCB:highest_protocol_version(Versions),
- RecordCB:lowest_protocol_version(ClientVersion, ServerVersion).
+ do_select_version(RecordCB, ClientVersion, Versions).
+
+do_select_version(_, ClientVersion, []) ->
+ ClientVersion;
+do_select_version(RecordCB, ClientVersion, [Version | Versions]) ->
+ case RecordCB:is_higher(Version, ClientVersion) of
+ true ->
+ %% Version too high for client - keep looking
+ do_select_version(RecordCB, ClientVersion, Versions);
+ false ->
+ %% Version ok for client - look for a higher
+ do_select_version(RecordCB, ClientVersion, Versions, Version)
+ end.
+%%
+do_select_version(_, _, [], GoodVersion) ->
+ GoodVersion;
+do_select_version(
+ RecordCB, ClientVersion, [Version | Versions], GoodVersion) ->
+ BetterVersion =
+ case RecordCB:is_higher(Version, ClientVersion) of
+ true ->
+ %% Version too high for client
+ GoodVersion;
+ false ->
+ %% Version ok for client
+ case RecordCB:is_higher(Version, GoodVersion) of
+ true ->
+ %% Use higher version
+ Version;
+ false ->
+ GoodVersion
+ end
+ end,
+ do_select_version(RecordCB, ClientVersion, Versions, BetterVersion).
renegotiation_info(_, client, _, false) ->
#renegotiation_info{renegotiated_connection = undefined};