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authorAnders Svensson <[email protected]>2011-09-22 19:49:47 +0200
committerAnders Svensson <[email protected]>2011-09-26 17:11:07 +0200
commitf1cfc008d1c10e778fa974521754c59b6dcd8d19 (patch)
treef096a0c72e76c686dc5c4249ada7db2f52addc47 /lib/diameter/test/diameter_traffic_SUITE.erl
parentcfda2e2834bcb766d8f85777ac61e7cc25e25f4d (diff)
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Add traffic suite
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+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2010-2011. 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%
+%%
+
+%%
+%% Tests of traffic between two Diameter nodes, one client, one server.
+%%
+
+-module(diameter_traffic_SUITE).
+
+-export([suite/0,
+ all/0,
+ groups/0,
+ init_per_suite/1,
+ end_per_suite/1,
+ init_per_group/2,
+ end_per_group/2,
+ init_per_testcase/2,
+ end_per_testcase/2]).
+
+%% testcases
+-export([result_codes/1,
+ send_ok/1,
+ send_arbitrary/1,
+ send_unknown/1,
+ send_unknown_mandatory/1,
+ send_noreply/1,
+ send_unsupported/1,
+ send_unsupported_app/1,
+ send_error_bit/1,
+ send_unsupported_version/1,
+ send_long/1,
+ send_nopeer/1,
+ send_noapp/1,
+ send_discard/1,
+ send_any/1,
+ send_all/1,
+ send_timeout/1,
+ send_error/1,
+ send_detach/1,
+ send_encode_error/1,
+ remove_transports/1,
+ stop_services/1]).
+
+%% diameter callbacks
+-export([peer_up/3,
+ peer_down/3,
+ pick_peer/5, pick_peer/6,
+ prepare_request/4, prepare_request/5,
+ prepare_retransmit/4,
+ handle_answer/5, handle_answer/6,
+ handle_error/5,
+ handle_request/3]).
+
+-ifdef(DIAMETER_CT).
+-include("diameter_gen_base_rfc3588.hrl").
+-else.
+-include_lib("diameter/include/diameter_gen_base_rfc3588.hrl").
+-endif.
+
+-include_lib("diameter/include/diameter.hrl").
+-include("diameter_ct.hrl").
+
+%% ===========================================================================
+
+-define(ADDR, {127,0,0,1}).
+-define(LISTEN_PORT, 3868).
+
+-define(CLIENT, "CLIENT").
+-define(SERVER, "SERVER").
+
+-define(APP_ALIAS, base).
+-define(EXTRA, an_extra_argument).
+-define(ENCODINGS, [list, record]).
+
+-define(DICT, ?DIAMETER_DICT_COMMON).
+-define(APP_ID, ?DIAMETER_APP_ID_COMMON).
+
+%% Config for diameter:start_service/2.
+-define(SERVICE(Name),
+ [{'Origin-Host', Name ++ ".erlang.org"},
+ {'Origin-Realm', "erlang.org"},
+ {'Host-IP-Address', [?ADDR]},
+ {'Vendor-Id', 12345},
+ {'Product-Name', "OTP/diameter"},
+ {'Acct-Application-Id', [?DIAMETER_APP_ID_COMMON]},
+ {application, [{alias, ?APP_ALIAS},
+ {dictionary, ?DIAMETER_DICT_COMMON},
+ {module, ?MODULE},
+ {answer_errors, callback}]}]).
+
+%% Config for diameter:add_transport/2. In the listening case, listen
+%% on a free port that we then lookup using the implementation detail
+%% that diameter_tcp registers the port with diameter_reg.
+-define(CONNECT(PortNr),
+ {connect, [{transport_module, diameter_tcp},
+ {transport_config, [{raddr, ?ADDR},
+ {rport, PortNr},
+ {ip, ?ADDR},
+ {port, 0}]},
+ {watchdog_timer, 6000},
+ {reconnect_timer, 1000}]}).
+-define(LISTEN,
+ {listen, [{transport_module, diameter_tcp},
+ {transport_config, [{ip, ?ADDR}, {port, 0}]},
+ {watchdog_timer, 6000},
+ {reconnect_timer, 1000}]}).
+
+-define(SUCCESS,
+ ?'DIAMETER_BASE_RESULT-CODE_DIAMETER_SUCCESS').
+-define(COMMAND_UNSUPPORTED,
+ ?'DIAMETER_BASE_RESULT-CODE_DIAMETER_COMMAND_UNSUPPORTED').
+-define(TOO_BUSY,
+ ?'DIAMETER_BASE_RESULT-CODE_DIAMETER_TOO_BUSY').
+-define(APPLICATION_UNSUPPORTED,
+ ?'DIAMETER_BASE_RESULT-CODE_DIAMETER_APPLICATION_UNSUPPORTED').
+-define(INVALID_HDR_BITS,
+ ?'DIAMETER_BASE_RESULT-CODE_DIAMETER_INVALID_HDR_BITS').
+-define(AVP_UNSUPPORTED,
+ ?'DIAMETER_BASE_RESULT-CODE_DIAMETER_AVP_UNSUPPORTED').
+-define(UNSUPPORTED_VERSION,
+ ?'DIAMETER_BASE_RESULT-CODE_DIAMETER_UNSUPPORTED_VERSION').
+
+-define(EVENT_RECORD,
+ ?'DIAMETER_BASE_ACCOUNTING-RECORD-TYPE_EVENT_RECORD').
+-define(AUTHORIZE_ONLY,
+ ?'DIAMETER_BASE_RE-AUTH-REQUEST-TYPE_AUTHORIZE_ONLY').
+-define(AUTHORIZE_AUTHENTICATE,
+ ?'DIAMETER_BASE_RE-AUTH-REQUEST-TYPE_AUTHORIZE_AUTHENTICATE').
+
+-define(LOGOUT,
+ ?'DIAMETER_BASE_TERMINATION-CAUSE_DIAMETER_LOGOUT').
+-define(BAD_ANSWER,
+ ?'DIAMETER_BASE_TERMINATION-CAUSE_DIAMETER_BAD_ANSWER').
+
+-define(A, list_to_atom).
+-define(L, atom_to_list).
+-define(P(N), ?A("p_" ++ ?L(N))).
+
+%% ===========================================================================
+
+suite() ->
+ [{timetrap, {seconds, 10}}].
+
+all() ->
+ [result_codes | [{group, N} || {N, _, _} <- groups()]]
+ ++ [remove_transports, stop_services].
+
+groups() ->
+ Ts = tc(),
+ [{E, [], Ts} || E <- ?ENCODINGS]
+ ++ [{?P(E), [parallel], Ts} || E <- ?ENCODINGS].
+
+init_per_suite(Config) ->
+ ok = diameter:start(),
+ ok = diameter:start_service(?SERVER, ?SERVICE(?SERVER)),
+ ok = diameter:start_service(?CLIENT, ?SERVICE(?CLIENT)),
+ {ok, LRef} = diameter:add_transport(?SERVER, ?LISTEN),
+ true = diameter:subscribe(?CLIENT),
+ {ok, CRef} = diameter:add_transport(?CLIENT, ?CONNECT(portnr())),
+ #diameter_event{service = ?CLIENT,
+ info = {up, CRef, _Peer, _Config, #diameter_packet{}}}
+ = receive #diameter_event{service = ?CLIENT} = E -> E
+ after 2000 -> false
+ end,
+ true = diameter:unsubscribe(?CLIENT),
+ [{transports, {LRef, CRef}} | Config].
+
+end_per_suite(_Config) ->
+ ok = diameter:stop().
+
+init_per_group(Name, Config) ->
+ E = case ?L(Name) of
+ "p_" ++ Rest ->
+ ?A(Rest);
+ _ ->
+ Name
+ end,
+ [{encode, E} | Config].
+
+end_per_group(_, _) ->
+ ok.
+
+init_per_testcase(Name, Config) ->
+ [{testcase, Name} | Config].
+
+end_per_testcase(_, _) ->
+ ok.
+
+%% Testcases to run when services are started and connections
+%% established.
+tc() ->
+ [send_ok,
+ send_arbitrary,
+ send_unknown,
+ send_unknown_mandatory,
+ send_noreply,
+ send_unsupported,
+ send_unsupported_app,
+ send_error_bit,
+ send_unsupported_version,
+ send_long,
+ send_nopeer,
+ send_noapp,
+ send_discard,
+ send_any,
+ send_all,
+ send_timeout,
+ send_error,
+ send_detach,
+ send_encode_error].
+
+portnr() ->
+ portnr(10).
+
+portnr(N)
+ when 0 < N ->
+ case diameter_reg:match({diameter_tcp, listener, '_'}) of
+ [{T, _Pid}] ->
+ {_, _, {_LRef, {_Addr, LSock}}} = T,
+ {ok, PortNr} = inet:port(LSock),
+ PortNr;
+ [] ->
+ receive after 50 -> ok end,
+ portnr(N-1)
+ end.
+
+%% ===========================================================================
+
+%% Ensure that result codes have the expected values.
+result_codes(_Config) ->
+ {2001, 3001, 3004, 3007, 3008, 5001, 5011}
+ = {?SUCCESS,
+ ?COMMAND_UNSUPPORTED,
+ ?TOO_BUSY,
+ ?APPLICATION_UNSUPPORTED,
+ ?INVALID_HDR_BITS,
+ ?AVP_UNSUPPORTED,
+ ?UNSUPPORTED_VERSION}.
+
+%% Send an ACR and expect success.
+send_ok(Config) ->
+ Req = ['ACR', {'Accounting-Record-Type', ?EVENT_RECORD},
+ {'Accounting-Record-Number', 1}],
+ #diameter_base_ACA{'Result-Code' = ?SUCCESS}
+ = call(Config, Req).
+
+%% Send an ASR with an arbitrary AVP and expect success and the same
+%% AVP in the reply.
+send_arbitrary(Config) ->
+ Req = ['ASR', {'AVP', [#diameter_avp{name = 'Class', value = "XXX"}]}],
+ #diameter_base_ASA{'Result-Code' = ?SUCCESS,
+ 'AVP' = Avps}
+ = call(Config, Req),
+ [#diameter_avp{name = 'Class',
+ value = "XXX"}]
+ = Avps.
+
+%% Send an unknown AVP (to some client) and check that it comes back.
+send_unknown(Config) ->
+ Req = ['ASR', {'AVP', [#diameter_avp{code = 999,
+ is_mandatory = false,
+ data = <<17>>}]}],
+ #diameter_base_ASA{'Result-Code' = ?SUCCESS,
+ 'AVP' = Avps}
+ = call(Config, Req),
+ [#diameter_avp{code = 999,
+ is_mandatory = false,
+ data = <<17>>}]
+ = Avps.
+
+%% Ditto but set the M flag.
+send_unknown_mandatory(Config) ->
+ Req = ['ASR', {'AVP', [#diameter_avp{code = 999,
+ is_mandatory = true,
+ data = <<17>>}]}],
+ #diameter_base_ASA{'Result-Code' = ?AVP_UNSUPPORTED,
+ 'Failed-AVP' = Failed}
+ = call(Config, Req),
+ [#'diameter_base_Failed-AVP'{'AVP' = Avps}] = Failed,
+ [#diameter_avp{code = 999,
+ is_mandatory = true,
+ data = <<17>>}]
+ = Avps.
+
+%% Send an STR that the server ignores.
+send_noreply(Config) ->
+ Req = ['STR', {'Termination-Cause', ?BAD_ANSWER}],
+ {error, timeout} = call(Config, Req).
+
+%% Send an unsupported command and expect 3001.
+send_unsupported(Config) ->
+ Req = ['STR', {'Termination-Cause', ?BAD_ANSWER}],
+ #'diameter_base_answer-message'{'Result-Code' = ?COMMAND_UNSUPPORTED}
+ = call(Config, Req).
+
+%% Send an unsupported command and expect 3007.
+send_unsupported_app(Config) ->
+ Req = ['STR', {'Termination-Cause', ?BAD_ANSWER}],
+ #'diameter_base_answer-message'{'Result-Code' = ?APPLICATION_UNSUPPORTED}
+ = call(Config, Req).
+
+%% Send a request with the E bit set and expect 3008.
+send_error_bit(Config) ->
+ Req = ['STR', {'Termination-Cause', ?BAD_ANSWER}],
+ #'diameter_base_answer-message'{'Result-Code' = ?INVALID_HDR_BITS}
+ = call(Config, Req).
+
+%% Send a bad version and check that we get 5011.
+send_unsupported_version(Config) ->
+ Req = ['STR', {'Termination-Cause', ?LOGOUT}],
+ #diameter_base_STA{'Result-Code' = ?UNSUPPORTED_VERSION}
+ = call(Config, Req).
+
+%% Send something long that will be fragmented by TCP.
+send_long(Config) ->
+ Req = ['STR', {'Termination-Cause', ?LOGOUT},
+ {'User-Name', [lists:duplicate(1 bsl 20, $X)]}],
+ #diameter_base_STA{'Result-Code' = ?SUCCESS}
+ = call(Config, Req).
+
+%% Send something for which pick_peer finds no suitable peer.
+send_nopeer(Config) ->
+ Req = ['STR', {'Termination-Cause', ?LOGOUT}],
+ {error, no_connection} = call(Config, Req, [{extra, [?EXTRA]}]).
+
+%% Send something on an unconfigured application.
+send_noapp(_Config) ->
+ Req = ['STR', {'Termination-Cause', ?LOGOUT}],
+ {error, no_connection} = diameter:call(?CLIENT, unknown_alias, Req).
+
+%% Send something that's discarded by prepare_request.
+send_discard(Config) ->
+ Req = ['STR', {'Termination-Cause', ?LOGOUT}],
+ {error, unprepared} = call(Config, Req).
+
+%% Send something using a filter that doesn't match any peer.
+send_any(Config) ->
+ Req = ['STR', {'Termination-Cause', ?LOGOUT}],
+ {error, no_connection} = call(Config, Req, [{filter, {any, []}}]).
+
+%% Success with a non-trivial filter.
+send_all(Config) ->
+ Req = ['STR', {'Termination-Cause', ?LOGOUT}],
+ #diameter_base_STA{'Result-Code' = ?SUCCESS}
+ = call(Config, Req, [{filter, {all, []}}]).
+
+%% Timeout before the server manages an answer.
+send_timeout(Config) ->
+ Req = ['RAR', {'Re-Auth-Request-Type', ?AUTHORIZE_ONLY}],
+ {error, timeout} = call(Config, Req, [{timeout, 1000}]).
+
+%% Explicitly answer with an answer-message and ensure that we
+%% received the Session-Id.
+send_error(Config) ->
+ Req = ['RAR', {'Re-Auth-Request-Type', ?AUTHORIZE_AUTHENTICATE}],
+ #'diameter_base_answer-message'{'Result-Code' = ?TOO_BUSY,
+ 'Session-Id' = SId}
+ = call(Config, Req),
+ undefined /= SId.
+
+%% Send a request with the detached option and receive it as a message
+%% from handle_answer instead.
+send_detach(Config) ->
+ Req = ['STR', {'Termination-Cause', ?LOGOUT}],
+ Ref = make_ref(),
+ ok = call(Config, Req, [{extra, [{self(), Ref}]}, detach]),
+ #diameter_packet{msg = Rec, errors = []}
+ = receive {Ref, T} -> T after 2000 -> false end,
+ #diameter_base_STA{'Result-Code' = ?SUCCESS}
+ = Rec.
+
+%% Send a request which can't be encoded and expect {error, encode}.
+send_encode_error(Config) ->
+ {error, encode} = call(Config, ['STR']). %% No Termination-Cause
+
+remove_transports(Config) ->
+ {LRef, CRef} = proplists:get_value(transports, Config),
+ true = diameter:subscribe(?SERVER),
+ ok = diameter:remove_transport(?CLIENT, CRef),
+ {down, LRef, _, _}
+ = receive #diameter_event{service = ?SERVER, info = I} -> I
+ after 5000 -> false
+ end.
+
+stop_services(_Config) ->
+ {ok, ok} = {diameter:stop_service(?CLIENT), diameter:stop_service(?SERVER)}.
+
+%% ===========================================================================
+
+call(Config, Req) ->
+ call(Config, Req, []).
+
+call(Config, Req, Opts) ->
+ Name = proplists:get_value(testcase, Config),
+ Enc = proplists:get_value(encode, Config),
+ diameter:call(?CLIENT,
+ ?APP_ALIAS,
+ msg(Req, Enc),
+ [{extra, [Name]} | Opts]).
+
+msg(L, list) ->
+ L;
+msg([H|T], record) ->
+ ?DICT:'#new-'(?DICT:msg2rec(H), T).
+
+set(L, Vs)
+ when is_list(L) ->
+ L ++ Vs;
+set(Rec, Vs) ->
+ ?DICT:'#set-'(Vs, Rec).
+
+%% ===========================================================================
+%% diameter callbacks
+
+%% peer_up/3
+
+peer_up(_SvcName, _Peer, State) ->
+ State.
+
+%% peer_down/3
+
+peer_down(_SvcName, _Peer, State) ->
+ State.
+
+%% pick_peer/5/6
+
+pick_peer([Peer], _, ?CLIENT, _State, Name)
+ when Name /= send_detach ->
+ {ok, Peer}.
+
+pick_peer([_Peer], _, ?CLIENT, _State, send_nopeer, ?EXTRA) ->
+ false;
+
+pick_peer([Peer], _, ?CLIENT, _State, send_detach, {_,_}) ->
+ {ok, Peer}.
+
+%% prepare_request/4/5
+
+prepare_request(Pkt, ?CLIENT, {_Ref, Caps}, Name) ->
+ prepare(Pkt, Caps, Name).
+
+prepare_request(Pkt, ?CLIENT, {_Ref, Caps}, send_detach, _) ->
+ {send, prepare(Pkt, Caps)}.
+
+prepare(Pkt, Caps, send_unsupported) ->
+ Req = prepare(Pkt, Caps),
+ #diameter_packet{bin = <<H:5/binary, _CmdCode:3/binary, T/binary>>}
+ = E
+ = diameter_codec:encode(?DICT, Pkt#diameter_packet{msg = Req}),
+ {send, E#diameter_packet{bin = <<H/binary, 42:24/integer, T/binary>>}};
+
+prepare(Pkt, Caps, send_unsupported_app) ->
+ Req = prepare(Pkt, Caps),
+ #diameter_packet{bin = <<H:8/binary, _ApplId:4/binary, T/binary>>}
+ = E
+ = diameter_codec:encode(?DICT, Pkt#diameter_packet{msg = Req}),
+ {send, E#diameter_packet{bin = <<H/binary, 42:32/integer, T/binary>>}};
+
+prepare(Pkg, Caps, send_error_bit) ->
+ #diameter_packet{header = Hdr} = Pkg,
+ {send, Pkg#diameter_packet{header = Hdr#diameter_header{is_error = true},
+ msg = prepare(Pkg, Caps)}};
+
+prepare(Pkg, Caps, send_unsupported_version) ->
+ #diameter_packet{header = Hdr} = Pkg,
+ {send, Pkg#diameter_packet{header = Hdr#diameter_header{version = 42},
+ msg = prepare(Pkg, Caps)}};
+
+prepare(_Pkg, _Caps, send_discard) ->
+ {discard, unprepared};
+
+prepare(Pkg, Caps, _Name) ->
+ {send, prepare(Pkg, Caps)}.
+
+prepare(#diameter_packet{msg = Req}, Caps)
+ when is_record(Req, diameter_base_ACR);
+ 'ACR' == hd(Req) ->
+ #diameter_caps{origin_host = {OH, _},
+ origin_realm = {OR, DR}}
+ = Caps,
+
+ set(Req, [{'Session-Id', diameter:session_id(OH)},
+ {'Origin-Host', OH},
+ {'Origin-Realm', OR},
+ {'Destination-Realm', DR}]);
+
+prepare(#diameter_packet{msg = Req}, Caps)
+ when is_record(Req, diameter_base_ASR);
+ 'ASR' == hd(Req) ->
+ #diameter_caps{origin_host = {OH, DH},
+ origin_realm = {OR, DR}}
+ = Caps,
+ set(Req, [{'Session-Id', diameter:session_id(OH)},
+ {'Origin-Host', OH},
+ {'Origin-Realm', OR},
+ {'Destination-Host', DH},
+ {'Destination-Realm', DR},
+ {'Auth-Application-Id', ?APP_ID}]);
+
+prepare(#diameter_packet{msg = Req}, Caps)
+ when is_record(Req, diameter_base_STR);
+ 'STR' == hd(Req) ->
+ #diameter_caps{origin_host = {OH, _},
+ origin_realm = {OR, DR}}
+ = Caps,
+ set(Req, [{'Session-Id', diameter:session_id(OH)},
+ {'Origin-Host', OH},
+ {'Origin-Realm', OR},
+ {'Destination-Realm', DR},
+ {'Auth-Application-Id', ?APP_ID}]);
+
+prepare(#diameter_packet{msg = Req}, Caps)
+ when is_record(Req, diameter_base_RAR);
+ 'RAR' == hd(Req) ->
+ #diameter_caps{origin_host = {OH, DH},
+ origin_realm = {OR, DR}}
+ = Caps,
+ set(Req, [{'Session-Id', diameter:session_id(OH)},
+ {'Origin-Host', OH},
+ {'Origin-Realm', OR},
+ {'Destination-Host', DH},
+ {'Destination-Realm', DR},
+ {'Auth-Application-Id', ?APP_ID}]).
+
+%% prepare_retransmit/4
+
+prepare_retransmit(_Pkt, false, _Peer, _Name) ->
+ discard.
+
+%% handle_answer/5/6
+
+handle_answer(Pkt, Req, ?CLIENT, Peer, Name) ->
+ answer(Pkt, Req, Peer, Name).
+
+handle_answer(Pkt, _Req, ?CLIENT, _Peer, send_detach, {Pid, Ref}) ->
+ Pid ! {Ref, Pkt}.
+
+answer(#diameter_packet{msg = Rec, errors = []}, _Req, _Peer, _) ->
+ Rec.
+
+%% handle_error/5
+
+handle_error(Reason, _Req, ?CLIENT, _Peer, _Name) ->
+ {error, Reason}.
+
+%% handle_request/3
+
+%% Note that diameter will set Result-Code and Failed-AVPs if
+%% #diameter_packet.errors is non-null.
+
+handle_request(Pkt, ?SERVER, {_Ref, Caps}) ->
+ request(Pkt, Caps).
+
+request(#diameter_packet{msg
+ = #diameter_base_ACR{'Session-Id' = SId,
+ 'Accounting-Record-Type' = RT,
+ 'Accounting-Record-Number' = RN}},
+ #diameter_caps{origin_host = {OH, _},
+ origin_realm = {OR, _}}) ->
+ {reply, ['ACA', {'Result-Code', ?SUCCESS},
+ {'Session-Id', SId},
+ {'Origin-Host', OH},
+ {'Origin-Realm', OR},
+ {'Accounting-Record-Type', RT},
+ {'Accounting-Record-Number', RN}]};
+
+request(#diameter_packet{msg = #diameter_base_ASR{'Session-Id' = SId,
+ 'AVP' = Avps}},
+ #diameter_caps{origin_host = {OH, _},
+ origin_realm = {OR, _}}) ->
+ {reply, #diameter_base_ASA{'Result-Code' = ?SUCCESS,
+ 'Session-Id' = SId,
+ 'Origin-Host' = OH,
+ 'Origin-Realm' = OR,
+ 'AVP' = Avps}};
+
+request(#diameter_packet{msg = #diameter_base_STR{'Termination-Cause' = ?LOGOUT,
+ 'Session-Id' = SId}},
+ #diameter_caps{origin_host = {OH, _},
+ origin_realm = {OR, _}}) ->
+ {reply, #diameter_base_STA{'Result-Code' = ?SUCCESS,
+ 'Session-Id' = SId,
+ 'Origin-Host' = OH,
+ 'Origin-Realm' = OR}};
+
+request(#diameter_packet{msg = #diameter_base_STR{}}, _Caps) ->
+ discard;
+
+request(#diameter_packet{msg = #diameter_base_RAR{}}, _Caps) ->
+ receive after 2000 -> ok end,
+ {protocol_error, ?TOO_BUSY}.