%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2008-2010. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved online at http://www.erlang.org/.
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and limitations
%% under the License.
%%
%% %CopyrightEnd%
%%
%%
-module(ssl_test_lib).
-include("test_server.hrl").
-include("test_server_line.hrl").
%% Note: This directive should only be used in test suites.
-compile(export_all).
-record(sslsocket, { fd = nil, pid = nil}).
timetrap(Time) ->
Mul = try
test_server:timetrap_scale_factor()
catch _:_ -> 1 end,
test_server:timetrap(1000+Time*Mul).
%% For now always run locally
run_where(_) ->
ClientNode = node(),
ServerNode = node(),
{ok, Host} = rpc:call(ServerNode, inet, gethostname, []),
{ClientNode, ServerNode, Host}.
run_where(_, ipv6) ->
ClientNode = node(),
ServerNode = node(),
{ok, Host} = rpc:call(ServerNode, inet, gethostname, []),
{ClientNode, ServerNode, Host}.
node_to_hostip(Node) ->
[_ , Host] = string:tokens(atom_to_list(Node), "@"),
{ok, Address} = inet:getaddr(Host, inet),
Address.
start_server(Args) ->
Result = spawn_link(?MODULE, run_server, [Args]),
receive
{listen, up} ->
Result
end.
run_server(Opts) ->
Node = proplists:get_value(node, Opts),
Port = proplists:get_value(port, Opts),
Options = proplists:get_value(options, Opts),
Pid = proplists:get_value(from, Opts),
test_server:format("ssl:listen(~p, ~p)~n", [Port, Options]),
{ok, ListenSocket} = rpc:call(Node, ssl, listen, [Port, Options]),
Pid ! {listen, up},
send_selected_port(Pid, Port, ListenSocket),
run_server(ListenSocket, Opts).
run_server(ListenSocket, Opts) ->
AcceptSocket = connect(ListenSocket, Opts),
Node = proplists:get_value(node, Opts),
Pid = proplists:get_value(from, Opts),
{Module, Function, Args} = proplists:get_value(mfa, Opts),
test_server:format("Server: apply(~p,~p,~p)~n",
[Module, Function, [AcceptSocket | Args]]),
case rpc:call(Node, Module, Function, [AcceptSocket | Args]) of
no_result_msg ->
ok;
Msg ->
test_server:format("Server Msg: ~p ~n", [Msg]),
Pid ! {self(), Msg}
end,
receive
listen ->
run_server(ListenSocket, Opts);
{listen, MFA} ->
run_server(ListenSocket, [MFA | proplists:delete(mfa, Opts)]);
close ->
test_server:format("Server closing ~p ~n", [self()]),
Result = rpc:call(Node, ssl, close, [AcceptSocket], 500),
test_server:format("Result ~p ~n", [Result]);
{ssl_closed, _} ->
ok
end.
%%% To enable to test with s_client -reconnect
connect(ListenSocket, Opts) ->
Node = proplists:get_value(node, Opts),
ReconnectTimes = proplists:get_value(reconnect_times, Opts, 0),
AcceptSocket = connect(ListenSocket, Node, 1 + ReconnectTimes, dummy),
case ReconnectTimes of
0 ->
AcceptSocket;
_ ->
remove_close_msg(ReconnectTimes),
AcceptSocket
end.
connect(_, _, 0, AcceptSocket) ->
AcceptSocket;
connect(ListenSocket, Node, N, _) ->
test_server:format("ssl:transport_accept(~p)~n", [ListenSocket]),
{ok, AcceptSocket} = rpc:call(Node, ssl, transport_accept,
[ListenSocket]),
test_server:format("ssl:ssl_accept(~p)~n", [AcceptSocket]),
ok = rpc:call(Node, ssl, ssl_accept, [AcceptSocket]),
connect(ListenSocket, Node, N-1, AcceptSocket).
remove_close_msg(0) ->
ok;
remove_close_msg(ReconnectTimes) ->
receive
{ssl_closed, _} ->
remove_close_msg(ReconnectTimes -1)
end.
start_client(Args) ->
Result = spawn_link(?MODULE, run_client, [lists:delete(return_socket, Args)]),
receive
{ connected, Socket } ->
case lists:member(return_socket, Args) of
true -> { Result, Socket };
false -> Result
end
end.
run_client(Opts) ->
Node = proplists:get_value(node, Opts),
Host = proplists:get_value(host, Opts),
Port = proplists:get_value(port, Opts),
Pid = proplists:get_value(from, Opts),
Options = proplists:get_value(options, Opts),
test_server:format("ssl:connect(~p, ~p, ~p)~n", [Host, Port, Options]),
case rpc:call(Node, ssl, connect, [Host, Port, Options]) of
{ok, Socket} ->
Pid ! { connected, Socket },
test_server:format("Client: connected~n", []),
%% In specail cases we want to know the client port, it will
%% be indicated by sending {port, 0} in options list!
send_selected_port(Pid, proplists:get_value(port, Options), Socket),
{Module, Function, Args} = proplists:get_value(mfa, Opts),
test_server:format("Client: apply(~p,~p,~p)~n",
[Module, Function, [Socket | Args]]),
case rpc:call(Node, Module, Function, [Socket | Args]) of
no_result_msg ->
ok;
Msg ->
test_server:format("Client Msg: ~p ~n", [Msg]),
Pid ! {self(), Msg}
end,
receive
close ->
test_server:format("Client closing~n", []),
rpc:call(Node, ssl, close, [Socket]);
{ssl_closed, Socket} ->
ok
end;
{error, Reason} ->
test_server:format("Client: connection failed: ~p ~n", [Reason]),
Pid ! {self(), {error, Reason}}
end.
close(Pid) ->
test_server:format("Close ~p ~n", [Pid]),
Monitor = erlang:monitor(process, Pid),
Pid ! close,
receive
{'DOWN', Monitor, process, Pid, Reason} ->
erlang:demonitor(Monitor),
test_server:format("Pid: ~p down due to:~p ~n", [Pid, Reason])
end.
check_result(Server, ServerMsg, Client, ClientMsg) ->
receive
{Server, ServerMsg} ->
receive
{Client, ClientMsg} ->
ok;
Unexpected ->
Reason = {{expected, {Client, ClientMsg}},
{got, Unexpected}},
test_server:fail(Reason)
end;
{Client, ClientMsg} ->
receive
{Server, ServerMsg} ->
ok;
Unexpected ->
Reason = {{expected, {Server, ClientMsg}},
{got, Unexpected}},
test_server:fail(Reason)
end;
{Port, {data,Debug}} when is_port(Port) ->
io:format("openssl ~s~n",[Debug]),
check_result(Server, ServerMsg, Client, ClientMsg);
Unexpected ->
Reason = {{expected, {Client, ClientMsg}},
{expected, {Server, ServerMsg}}, {got, Unexpected}},
test_server:fail(Reason)
end.
check_result(Pid, Msg) ->
receive
{Pid, Msg} ->
ok;
{Port, {data,Debug}} when is_port(Port) ->
io:format("openssl ~s~n",[Debug]),
check_result(Pid,Msg);
Unexpected ->
Reason = {{expected, {Pid, Msg}},
{got, Unexpected}},
test_server:fail(Reason)
end.
wait_for_result(Server, ServerMsg, Client, ClientMsg) ->
receive
{Server, ServerMsg} ->
receive
{Client, ClientMsg} ->
ok
%% Unexpected ->
%% Unexpected
end;
{Client, ClientMsg} ->
receive
{Server, ServerMsg} ->
ok
%% Unexpected ->
%% Unexpected
end;
{Port, {data,Debug}} when is_port(Port) ->
io:format("openssl ~s~n",[Debug]),
wait_for_result(Server, ServerMsg, Client, ClientMsg)
%% Unexpected ->
%% Unexpected
end.
wait_for_result(Pid, Msg) ->
receive
{Pid, Msg} ->
ok;
{Port, {data,Debug}} when is_port(Port) ->
io:format("openssl ~s~n",[Debug]),
wait_for_result(Pid,Msg)
%% Unexpected ->
%% Unexpected
end.
cert_options(Config) ->
ClientCaCertFile = filename:join([?config(priv_dir, Config),
"client", "cacerts.pem"]),
ClientCertFile = filename:join([?config(priv_dir, Config),
"client", "cert.pem"]),
ClientCertFileDigitalSignatureOnly = filename:join([?config(priv_dir, Config),
"client", "digital_signature_only_cert.pem"]),
ServerCaCertFile = filename:join([?config(priv_dir, Config),
"server", "cacerts.pem"]),
ServerCertFile = filename:join([?config(priv_dir, Config),
"server", "cert.pem"]),
ServerKeyFile = filename:join([?config(priv_dir, Config),
"server", "key.pem"]),
ClientKeyFile = filename:join([?config(priv_dir, Config),
"client", "key.pem"]),
ServerKeyCertFile = filename:join([?config(priv_dir, Config),
"server", "keycert.pem"]),
ClientKeyCertFile = filename:join([?config(priv_dir, Config),
"client", "keycert.pem"]),
BadCaCertFile = filename:join([?config(priv_dir, Config),
"badcacert.pem"]),
BadCertFile = filename:join([?config(priv_dir, Config),
"badcert.pem"]),
BadKeyFile = filename:join([?config(priv_dir, Config),
"badkey.pem"]),
[{client_opts, [{ssl_imp, new},{reuseaddr, true}]},
{client_verification_opts, [{cacertfile, ClientCaCertFile},
{certfile, ClientCertFile},
{keyfile, ClientKeyFile},
{ssl_imp, new}]},
{client_verification_opts_digital_signature_only, [{cacertfile, ClientCaCertFile},
{certfile, ClientCertFileDigitalSignatureOnly},
{keyfile, ClientKeyFile},
{ssl_imp, new}]},
{server_opts, [{ssl_imp, new},{reuseaddr, true},
{certfile, ServerCertFile}, {keyfile, ServerKeyFile}]},
{server_anon, [{ssl_imp, new},{reuseaddr, true}, {ciphers, anonymous_suites()}]},
{server_verification_opts, [{ssl_imp, new},{reuseaddr, true},
{cacertfile, ServerCaCertFile},
{certfile, ServerCertFile}, {keyfile, ServerKeyFile}]},
{client_kc_opts, [{certfile, ClientKeyCertFile}, {ssl_imp, new}]},
{server_kc_opts, [{ssl_imp, new},{reuseaddr, true},
{certfile, ServerKeyCertFile}]},
{client_bad_ca, [{cacertfile, BadCaCertFile},
{certfile, ClientCertFile},
{keyfile, ClientKeyFile},
{ssl_imp, new}]},
{client_bad_cert, [{cacertfile, ClientCaCertFile},
{certfile, BadCertFile},
{keyfile, ClientKeyFile},
{ssl_imp, new}]},
{server_bad_ca, [{ssl_imp, new},{cacertfile, BadCaCertFile},
{certfile, ServerCertFile},
{keyfile, ServerKeyFile}]},
{server_bad_cert, [{ssl_imp, new},{cacertfile, ServerCaCertFile},
{certfile, BadCertFile}, {keyfile, ServerKeyFile}]},
{server_bad_key, [{ssl_imp, new},{cacertfile, ServerCaCertFile},
{certfile, ServerCertFile}, {keyfile, BadKeyFile}]}
| Config].
make_dsa_cert(Config) ->
{ServerCaCertFile, ServerCertFile, ServerKeyFile} = make_cert_files("server", Config, dsa, dsa, ""),
{ClientCaCertFile, ClientCertFile, ClientKeyFile} = make_cert_files("client", Config, dsa, dsa, ""),
[{server_dsa_opts, [{ssl_imp, new},{reuseaddr, true},
{cacertfile, ServerCaCertFile},
{certfile, ServerCertFile}, {keyfile, ServerKeyFile}]},
{server_dsa_verify_opts, [{ssl_imp, new},{reuseaddr, true},
{cacertfile, ClientCaCertFile},
{certfile, ServerCertFile}, {keyfile, ServerKeyFile},
{verify, verify_peer}]},
{client_dsa_opts, [{ssl_imp, new},{reuseaddr, true},
{cacertfile, ClientCaCertFile},
{certfile, ClientCertFile}, {keyfile, ClientKeyFile}]}
| Config].
make_mix_cert(Config) ->
{ServerCaCertFile, ServerCertFile, ServerKeyFile} = make_cert_files("server", Config, dsa,
rsa, "mix"),
{ClientCaCertFile, ClientCertFile, ClientKeyFile} = make_cert_files("client", Config, dsa,
rsa, "mix"),
[{server_mix_opts, [{ssl_imp, new},{reuseaddr, true},
{cacertfile, ServerCaCertFile},
{certfile, ServerCertFile}, {keyfile, ServerKeyFile}]},
{server_mix_verify_opts, [{ssl_imp, new},{reuseaddr, true},
{cacertfile, ClientCaCertFile},
{certfile, ServerCertFile}, {keyfile, ServerKeyFile},
{verify, verify_peer}]},
{client_mix_opts, [{ssl_imp, new},{reuseaddr, true},
{cacertfile, ClientCaCertFile},
{certfile, ClientCertFile}, {keyfile, ClientKeyFile}]}
| Config].
make_cert_files(RoleStr, Config, Alg1, Alg2, Prefix) ->
Alg1Str = atom_to_list(Alg1),
Alg2Str = atom_to_list(Alg2),
CaInfo = {CaCert, _} = erl_make_certs:make_cert([{key, Alg1}]),
{Cert, CertKey} = erl_make_certs:make_cert([{key, Alg2}, {issuer, CaInfo}]),
CaCertFile = filename:join([?config(priv_dir, Config),
RoleStr, Prefix ++ Alg1Str ++ "_cacerts.pem"]),
CertFile = filename:join([?config(priv_dir, Config),
RoleStr, Prefix ++ Alg2Str ++ "_cert.pem"]),
KeyFile = filename:join([?config(priv_dir, Config),
RoleStr, Prefix ++ Alg2Str ++ "_key.pem"]),
der_to_pem(CaCertFile, [{'Certificate', CaCert, not_encrypted}]),
der_to_pem(CertFile, [{'Certificate', Cert, not_encrypted}]),
der_to_pem(KeyFile, [CertKey]),
{CaCertFile, CertFile, KeyFile}.
start_upgrade_server(Args) ->
Result = spawn_link(?MODULE, run_upgrade_server, [Args]),
receive
{listen, up} ->
Result
end.
run_upgrade_server(Opts) ->
Node = proplists:get_value(node, Opts),
Port = proplists:get_value(port, Opts),
TimeOut = proplists:get_value(timeout, Opts, infinity),
TcpOptions = proplists:get_value(tcp_options, Opts),
SslOptions = proplists:get_value(ssl_options, Opts),
Pid = proplists:get_value(from, Opts),
test_server:format("gen_tcp:listen(~p, ~p)~n", [Port, TcpOptions]),
{ok, ListenSocket} = rpc:call(Node, gen_tcp, listen, [Port, TcpOptions]),
Pid ! {listen, up},
send_selected_port(Pid, Port, ListenSocket),
test_server:format("gen_tcp:accept(~p)~n", [ListenSocket]),
{ok, AcceptSocket} = rpc:call(Node, gen_tcp, accept, [ListenSocket]),
try
{ok, SslAcceptSocket} = case TimeOut of
infinity ->
test_server:format("ssl:ssl_accept(~p, ~p)~n",
[AcceptSocket, SslOptions]),
rpc:call(Node, ssl, ssl_accept,
[AcceptSocket, SslOptions]);
_ ->
test_server:format("ssl:ssl_accept(~p, ~p, ~p)~n",
[AcceptSocket, SslOptions, TimeOut]),
rpc:call(Node, ssl, ssl_accept,
[AcceptSocket, SslOptions, TimeOut])
end,
{Module, Function, Args} = proplists:get_value(mfa, Opts),
Msg = rpc:call(Node, Module, Function, [SslAcceptSocket | Args]),
test_server:format("Upgrade Server Msg: ~p ~n", [Msg]),
Pid ! {self(), Msg},
receive
close ->
test_server:format("Upgrade Server closing~n", []),
rpc:call(Node, ssl, close, [SslAcceptSocket])
end
catch error:{badmatch, Error} ->
Pid ! {self(), Error}
end.
start_upgrade_client(Args) ->
spawn_link(?MODULE, run_upgrade_client, [Args]).
run_upgrade_client(Opts) ->
Node = proplists:get_value(node, Opts),
Host = proplists:get_value(host, Opts),
Port = proplists:get_value(port, Opts),
Pid = proplists:get_value(from, Opts),
TcpOptions = proplists:get_value(tcp_options, Opts),
SslOptions = proplists:get_value(ssl_options, Opts),
test_server:format("gen_tcp:connect(~p, ~p, ~p)~n",
[Host, Port, TcpOptions]),
{ok, Socket} = rpc:call(Node, gen_tcp, connect, [Host, Port, TcpOptions]),
send_selected_port(Pid, Port, Socket),
test_server:format("ssl:connect(~p, ~p)~n", [Socket, SslOptions]),
{ok, SslSocket} = rpc:call(Node, ssl, connect, [Socket, SslOptions]),
{Module, Function, Args} = proplists:get_value(mfa, Opts),
test_server:format("apply(~p, ~p, ~p)~n",
[Module, Function, [SslSocket | Args]]),
Msg = rpc:call(Node, Module, Function, [SslSocket | Args]),
test_server:format("Upgrade Client Msg: ~p ~n", [Msg]),
Pid ! {self(), Msg},
receive
close ->
test_server:format("Upgrade Client closing~n", []),
rpc:call(Node, ssl, close, [SslSocket])
end.
start_upgrade_server_error(Args) ->
Result = spawn_link(?MODULE, run_upgrade_server_error, [Args]),
receive
{listen, up} ->
Result
end.
run_upgrade_server_error(Opts) ->
Node = proplists:get_value(node, Opts),
Port = proplists:get_value(port, Opts),
TimeOut = proplists:get_value(timeout, Opts, infinity),
TcpOptions = proplists:get_value(tcp_options, Opts),
SslOptions = proplists:get_value(ssl_options, Opts),
Pid = proplists:get_value(from, Opts),
test_server:format("gen_tcp:listen(~p, ~p)~n", [Port, TcpOptions]),
{ok, ListenSocket} = rpc:call(Node, gen_tcp, listen, [Port, TcpOptions]),
Pid ! {listen, up},
send_selected_port(Pid, Port, ListenSocket),
test_server:format("gen_tcp:accept(~p)~n", [ListenSocket]),
{ok, AcceptSocket} = rpc:call(Node, gen_tcp, accept, [ListenSocket]),
Error = case TimeOut of
infinity ->
test_server:format("ssl:ssl_accept(~p, ~p)~n",
[AcceptSocket, SslOptions]),
rpc:call(Node, ssl, ssl_accept,
[AcceptSocket, SslOptions]);
_ ->
test_server:format("ssl:ssl_accept(~p, ~p, ~p)~n",
[AcceptSocket, SslOptions, TimeOut]),
rpc:call(Node, ssl, ssl_accept,
[AcceptSocket, SslOptions, TimeOut])
end,
Pid ! {self(), Error}.
start_server_error(Args) ->
Result = spawn_link(?MODULE, run_server_error, [Args]),
receive
{listen, up} ->
Result
end.
run_server_error(Opts) ->
Node = proplists:get_value(node, Opts),
Port = proplists:get_value(port, Opts),
Options = proplists:get_value(options, Opts),
Pid = proplists:get_value(from, Opts),
test_server:format("ssl:listen(~p, ~p)~n", [Port, Options]),
case rpc:call(Node, ssl, listen, [Port, Options]) of
{ok, ListenSocket} ->
%% To make sure error_client will
%% get {error, closed} and not {error, connection_refused}
Pid ! {listen, up},
send_selected_port(Pid, Port, ListenSocket),
test_server:format("ssl:transport_accept(~p)~n", [ListenSocket]),
case rpc:call(Node, ssl, transport_accept, [ListenSocket]) of
{error, _} = Error ->
Pid ! {self(), Error};
{ok, AcceptSocket} ->
test_server:format("ssl:ssl_accept(~p)~n", [AcceptSocket]),
Error = rpc:call(Node, ssl, ssl_accept, [AcceptSocket]),
Pid ! {self(), Error}
end;
Error ->
%% Not really true but as this is an error test
%% this is what we want.
Pid ! {listen, up},
Pid ! {self(), Error}
end.
start_client_error(Args) ->
spawn_link(?MODULE, run_client_error, [Args]).
run_client_error(Opts) ->
Node = proplists:get_value(node, Opts),
Host = proplists:get_value(host, Opts),
Port = proplists:get_value(port, Opts),
Pid = proplists:get_value(from, Opts),
Options = proplists:get_value(options, Opts),
test_server:format("ssl:connect(~p, ~p, ~p)~n", [Host, Port, Options]),
Error = rpc:call(Node, ssl, connect, [Host, Port, Options]),
Pid ! {self(), Error}.
inet_port(Pid) when is_pid(Pid)->
receive
{Pid, {port, Port}} ->
Port
end;
inet_port(Node) ->
{Port, Socket} = do_inet_port(Node),
rpc:call(Node, gen_tcp, close, [Socket]),
Port.
do_inet_port(Node) ->
{ok, Socket} = rpc:call(Node, gen_tcp, listen, [0, [{reuseaddr, true}]]),
{ok, Port} = rpc:call(Node, inet, port, [Socket]),
{Port, Socket}.
no_result(_) ->
no_result_msg.
trigger_renegotiate(Socket, [ErlData, N]) ->
[{session_id, Id} | _ ] = ssl:session_info(Socket),
trigger_renegotiate(Socket, ErlData, N, Id).
trigger_renegotiate(Socket, _, 0, Id) ->
test_server:sleep(1000),
case ssl:session_info(Socket) of
[{session_id, Id} | _ ] ->
fail_session_not_renegotiated;
%% Tests that uses this function will not reuse
%% sessions so if we get a new session id the
%% renegotiation has succeeded.
[{session_id, _} | _ ] ->
ok;
{error, closed} ->
fail_session_fatal_alert_during_renegotiation;
{error, timeout} ->
fail_timeout
end;
trigger_renegotiate(Socket, ErlData, N, Id) ->
ssl:send(Socket, ErlData),
trigger_renegotiate(Socket, ErlData, N-1, Id).
send_selected_port(Pid, 0, #sslsocket{} = Socket) ->
{ok, {_, NewPort}} = ssl:sockname(Socket),
Pid ! {self(), {port, NewPort}};
send_selected_port(Pid, 0, Socket) ->
{ok, {_, NewPort}} = inet:sockname(Socket),
Pid ! {self(), {port, NewPort}};
send_selected_port(_,_,_) ->
ok.
rsa_suites() ->
lists:filter(fun({dhe_dss, _, _}) ->
false;
(_) ->
true
end,
ssl:cipher_suites()).
rsa_non_signed_suites() ->
lists:filter(fun({rsa, _, _}) ->
true;
(_) ->
false
end,
ssl:cipher_suites()).
dsa_suites() ->
lists:filter(fun({dhe_dss, _, _}) ->
true;
(_) ->
false
end,
ssl:cipher_suites()).
openssl_rsa_suites() ->
Ciphers = ssl:cipher_suites(openssl),
lists:filter(fun(Str) ->
case re:run(Str,"DSS",[]) of
nomatch ->
true;
_ ->
false
end
end, Ciphers).
openssl_dsa_suites() ->
Ciphers = ssl:cipher_suites(openssl),
lists:filter(fun(Str) ->
case re:run(Str,"DSS",[]) of
nomatch ->
false;
_ ->
true
end
end, Ciphers).
anonymous_suites() ->
[{dh_anon, rc4_128, md5},
{dh_anon, des_cbc, sha},
{dh_anon, '3des_ede_cbc', sha},
{dh_anon, aes_128_cbc, sha},
{dh_anon, aes_256_cbc, sha}].
pem_to_der(File) ->
{ok, PemBin} = file:read_file(File),
public_key:pem_decode(PemBin).
der_to_pem(File, Entries) ->
PemBin = public_key:pem_encode(Entries),
file:write_file(File, PemBin).
cipher_result(Socket, Result) ->
Result = ssl:connection_info(Socket),
test_server:format("Successfull connect: ~p~n", [Result]),
%% Importante to send two packets here
%% to properly test "cipher state" handling
ssl:send(Socket, "Hello\n"),
receive
{ssl, Socket, "Hello\n"} ->
ssl:send(Socket, " world\n"),
receive
{ssl, Socket, " world\n"} ->
ok
end;
Other ->
{unexpected, Other}
end.
