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-rw-r--r--lib/diameter/src/base/diameter_traffic.erl367
1 files changed, 165 insertions, 202 deletions
diff --git a/lib/diameter/src/base/diameter_traffic.erl b/lib/diameter/src/base/diameter_traffic.erl
index daba440586..42164c48c0 100644
--- a/lib/diameter/src/base/diameter_traffic.erl
+++ b/lib/diameter/src/base/diameter_traffic.erl
@@ -275,45 +275,40 @@ recv_request(Ack,
apps = Apps}
= RecvData) ->
Ack andalso (TPid ! {handler, self()}),
- send_A(recv_R(diameter_service:find_incoming_app(PeerT, TPid, Id, Apps),
- TPid,
- Pkt,
- Dict0,
- RecvData),
- TPid,
- Dict0,
- RecvData).
-
-%% recv_R/5
-
-recv_R({#diameter_app{id = Id, dictionary = AppDict} = App, Caps},
- TPid,
- Pkt0,
- Dict0,
- #recvdata{codec = Opts}
- = RecvData) ->
- incr(recv, Pkt0, TPid, AppDict),
- Pkt = errors(Id, diameter_codec:decode(Id, AppDict, Opts, Pkt0)),
- incr_error(recv, Pkt, TPid, AppDict),
- {Caps, Pkt, App, recv_R(App, TPid, Dict0, Caps, RecvData, Pkt)};
-%% Note that the decode is different depending on whether or not Id is
-%% ?APP_ID_RELAY.
-
-%% DIAMETER_APPLICATION_UNSUPPORTED 3007
-%% A request was sent for an application that is not supported.
-
-recv_R(#diameter_caps{}
- = Caps,
- _TPid,
- #diameter_packet{errors = Es}
- = Pkt,
- _Dict0,
- _RecvData) ->
- {Caps, Pkt#diameter_packet{avps = collect_avps(Pkt),
- errors = [3007 | Es]}};
+ case diameter_service:find_incoming_app(PeerT, TPid, Id, Apps) of
+ {#diameter_app{id = Aid, dictionary = AppDict} = App, Caps} ->
+ incr(recv, Pkt, TPid, AppDict),
+ DecPkt = decode(Aid, AppDict, RecvData, Pkt),
+ incr_error(recv, DecPkt, TPid, AppDict),
+ send_A(recv_R(App, TPid, Dict0, Caps, RecvData, DecPkt),
+ TPid,
+ App,
+ Dict0,
+ RecvData,
+ DecPkt,
+ Caps);
+ #diameter_caps{} = Caps ->
+ %% DIAMETER_APPLICATION_UNSUPPORTED 3007
+ %% A request was sent for an application that is not
+ %% supported.
+ RC = 3007,
+ Es = Pkt#diameter_packet.errors,
+ DecPkt = Pkt#diameter_packet{avps = collect_avps(Pkt),
+ errors = [RC | Es]},
+ send_answer(answer_message(RC, Dict0, Caps, DecPkt),
+ TPid,
+ Dict0,
+ Dict0,
+ Dict0,
+ RecvData,
+ DecPkt,
+ [[]]);
+ false = No -> %% transport has gone down
+ No
+ end.
-recv_R(false = No, _, _, _, _) -> %% transport has gone down
- No.
+decode(Id, Dict, #recvdata{codec = Opts}, Pkt) ->
+ errors(Id, diameter_codec:decode(Id, Dict, Opts, Pkt)).
collect_avps(Pkt) ->
case diameter_codec:collect_avps(Pkt) of
@@ -323,6 +318,14 @@ collect_avps(Pkt) ->
Avps
end.
+%% send_A/7
+
+send_A([T | Fs], TPid, App, Dict0, RecvData, DecPkt, Caps) ->
+ send_A(T, TPid, App, Dict0, RecvData, DecPkt, Caps, Fs);
+
+send_A(discard = No, _, _, _, _, _, _) ->
+ No.
+
%% recv_R/6
%% Answer errors ourselves ...
@@ -332,9 +335,9 @@ recv_R(#diameter_app{options = [_, {request_errors, E} | _]},
_Caps,
_RecvData,
#diameter_packet{errors = [RC|_]}) %% a detected 3xxx is hd
- when E == answer, (Dict0 /= ?BASE orelse 3 == RC div 1000);
+ when E == answer, Dict0 /= ?BASE orelse 3 == RC div 1000;
E == answer_3xxx, 3 == RC div 1000 ->
- {{answer_message, rc(RC)}, [], []};
+ [{answer_message, rc(RC)}, []];
%% ... or make a handle_request callback. Note that
%% Pkt#diameter_packet.msg = undefined in the 3001 case.
@@ -426,24 +429,24 @@ errors(_, Pkt) ->
%% command code in this case. It will also then ignore Dict and use
%% the base encoder.
request_cb({reply, _Ans} = T, _App, EvalPktFs, EvalFs) ->
- {T, EvalPktFs, EvalFs};
+ [T, EvalPktFs | EvalFs];
%% An 3xxx result code, for which the E-bit is set in the header.
request_cb({protocol_error, RC}, _App, EvalPktFs, EvalFs)
when 3 == RC div 1000 ->
- {{answer_message, RC}, EvalPktFs, EvalFs};
+ [{answer_message, RC}, EvalPktFs | EvalFs];
request_cb({answer_message, RC} = T, _App, EvalPktFs, EvalFs)
when 3 == RC div 1000;
5 == RC div 1000 ->
- {T, EvalPktFs, EvalFs};
+ [T, EvalPktFs | EvalFs];
%% RFC 3588 says we must reply 3001 to anything unrecognized or
%% unsupported. 'noreply' is undocumented (and inappropriately named)
%% backwards compatibility for this, protocol_error the documented
%% alternative.
request_cb(noreply, _App, EvalPktFs, EvalFs) ->
- {{answer_message, 3001}, EvalPktFs, EvalFs};
+ [{answer_message, 3001}, EvalPktFs | EvalFs];
%% Relay a request to another peer. This is equivalent to doing an
%% explicit call/4 with the message in question except that (1) a loop
@@ -464,7 +467,7 @@ request_cb({A, Opts}, #diameter_app{id = Id}, EvalPktFs, EvalFs)
when A == relay, Id == ?APP_ID_RELAY;
A == proxy, Id /= ?APP_ID_RELAY;
A == resend ->
- {{call, Opts}, EvalPktFs, EvalFs};
+ [{call, Opts}, EvalPktFs | EvalFs];
request_cb(discard = No, _, _, _) ->
No;
@@ -478,80 +481,95 @@ request_cb({eval, RC, F}, App, EvalPktFs, Fs) ->
request_cb(T, App, _, _) ->
?ERROR({invalid_return, T, handle_request, App}).
-%% send_A/4
-
-send_A({Caps, Pkt}, TPid, Dict0, RecvData) -> %% unsupported application
- #diameter_packet{errors = [RC|_]} = Pkt,
- send_A(answer_message(RC, Caps, Dict0, Pkt),
- TPid,
- {Dict0, Dict0},
- RecvData,
- Pkt,
- [],
- []);
-
-send_A({Caps, Pkt, App, {T, EvalPktFs, EvalFs}}, TPid, Dict0, RecvData) ->
- send_A(answer(T, Caps, Pkt, App, Dict0, RecvData),
- TPid,
- {App#diameter_app.dictionary, Dict0},
- RecvData,
- Pkt,
- EvalPktFs,
- EvalFs);
-
-send_A(_, _, _, _) ->
- ok.
+%% send_A/8
+
+send_A({reply, Ans}, TPid, App, Dict0, RecvData, Pkt, _Caps, Fs) ->
+ AppDict = App#diameter_app.dictionary,
+ MsgDict = msg_dict(AppDict, Dict0, Ans),
+ send_answer(Ans,
+ TPid,
+ MsgDict,
+ AppDict,
+ Dict0,
+ RecvData,
+ Pkt,
+ Fs);
+
+send_A({call, Opts}, TPid, App, Dict0, RecvData, Pkt, Caps, Fs) ->
+ AppDict = App#diameter_app.dictionary,
+ case resend(Opts, Caps, Pkt, App, Dict0, RecvData) of
+ #diameter_packet{bin = Bin} = Ans -> %% answer: reset hop by hop id
+ #diameter_packet{header = #diameter_header{hop_by_hop_id = Id},
+ transport_data = TD}
+ = Pkt,
+ Reset = diameter_codec:hop_by_hop_id(Id, Bin),
+ MsgDict = msg_dict(AppDict, Dict0, Ans),
+ send_answer(Ans#diameter_packet{bin = Reset,
+ transport_data = TD},
+ TPid,
+ MsgDict,
+ AppDict,
+ Dict0,
+ Fs);
+ RC ->
+ send_answer(answer_message(RC, Dict0, Caps, Pkt),
+ TPid,
+ Dict0,
+ AppDict,
+ Dict0,
+ RecvData,
+ Pkt,
+ Fs)
+ end;
-%% send_A/7
+%% RFC 3588 only allows 3xxx errors in an answer-message. RFC 6733
+%% added the possibility of setting 5xxx.
-send_A(T,
- TPid,
- {AppDict, Dict0}
- = DictT0,
- RecvData,
- ReqPkt,
- EvalPktFs,
- EvalFs) ->
- {MsgDict, Pkt} = reply(T, TPid, DictT0, RecvData, EvalPktFs, ReqPkt),
- incr(send, Pkt, TPid, AppDict),
- incr_rc(send, Pkt, TPid, {MsgDict, AppDict, Dict0}), %% count outgoing
- send(TPid, Pkt, _Route = self()),
- lists:foreach(fun diameter_lib:eval/1, EvalFs).
+send_A({answer_message, RC} = T, TPid, App, Dict0, RecvData, Pkt, Caps, Fs) ->
+ Dict0 /= ?BASE orelse 3 == RC div 1000
+ orelse ?ERROR({invalid_return, T, handle_request, App}),
+ send_answer(answer_message(RC, Dict0, Caps, Pkt),
+ TPid,
+ Dict0,
+ App#diameter_app.dictionary,
+ Dict0,
+ RecvData,
+ Pkt,
+ Fs).
-%% answer/6
+%% send_answer/8
-answer({reply, Ans}, _Caps, _Pkt, App, Dict0, _RecvData) ->
- {msg_dict(App#diameter_app.dictionary, Dict0, Ans), Ans};
+%% Skip the setting of Result-Code and Failed-AVP's below. This is
+%% undocumented and shouldn't be relied on.
+send_answer([Ans], TPid, MsgDict, AppDict, Dict0, RecvData, Pkt, Fs)
+ when [] == Pkt#diameter_packet.errors ->
+ send_answer(Ans, TPid, MsgDict, AppDict, Dict0, RecvData, Pkt, Fs);
+send_answer([Ans], TPid, MsgDict, AppDict, Dict0, RecvData, Pkt0, Fs) ->
+ Pkt = Pkt0#diameter_packet{errors = []},
+ send_answer(Ans, TPid, MsgDict, AppDict, Dict0, RecvData, Pkt, Fs);
+
+send_answer(Ans, TPid, MsgDict, AppDict, Dict0, RecvData, DecPkt, Fs) ->
+ Pkt = encode({MsgDict, AppDict},
+ TPid,
+ RecvData#recvdata.codec,
+ make_answer_packet(Ans, DecPkt, MsgDict, Dict0)),
+ send_answer(Pkt, TPid, MsgDict, AppDict, Dict0, Fs).
-answer({call, Opts}, Caps, Pkt, App, Dict0, RecvData) ->
- #diameter_caps{origin_host = {OH,_}}
- = Caps,
- #diameter_packet{avps = Avps}
- = Pkt,
- {Code, _Flags, Vid} = Dict0:avp_header('Route-Record'),
- resend(is_loop(Code, Vid, OH, Dict0, Avps),
- Opts,
- Caps,
- Pkt,
- App,
- Dict0,
- RecvData);
+%% send_answer/6
-%% RFC 3588 only allows 3xxx errors in an answer-message. RFC 6733
-%% added the possibility of setting 5xxx.
-answer({answer_message, RC} = T, Caps, Pkt, App, Dict0, _RecvData) ->
- Dict0 /= ?BASE orelse 3 == RC div 1000
- orelse ?ERROR({invalid_return, T, handle_request, App}),
- answer_message(RC, Caps, Dict0, Pkt).
+send_answer(Pkt, TPid, MsgDict, AppDict, Dict0, [EvalPktFs | EvalFs]) ->
+ eval_packet(Pkt, EvalPktFs),
+ incr(send, Pkt, TPid, AppDict),
+ incr_rc(send, Pkt, TPid, {MsgDict, AppDict, Dict0}), %% count outgoing
+ send(TPid, Pkt, _Route = self()),
+ lists:foreach(fun diameter_lib:eval/1, EvalFs).
%% msg_dict/3
%%
%% Return the dictionary defining the message grammar in question: the
%% application dictionary or the common dictionary.
-msg_dict(AppDict, Dict0, [Msg])
- when is_list(Msg);
- is_tuple(Msg) ->
+msg_dict(AppDict, Dict0, [Msg]) ->
msg_dict(AppDict, Dict0, Msg);
msg_dict(AppDict, Dict0, Msg) ->
@@ -582,14 +600,10 @@ is_answer_message(Rec, Dict) ->
error:_ -> false
end.
-%% answer_message/4
+%% resend/6
-answer_message(RC,
- #diameter_caps{origin_host = {OH,_},
- origin_realm = {OR,_}},
- Dict0,
- Pkt) ->
- {Dict0, answer_message(OH, OR, RC, Dict0, Pkt)}.
+resend(Opts, Caps, Pkt, App, Dict0, RecvData) ->
+ resend(is_loop(Dict0, Caps, Pkt), Opts, Caps, Pkt, App, Dict0, RecvData).
%% resend/7
@@ -599,8 +613,8 @@ answer_message(RC,
%% if one is available, but the peer reporting the error has
%% identified a configuration problem.
-resend(true, _Opts, Caps, Pkt, _App, Dict0, _RecvData) ->
- answer_message(3005, Caps, Dict0, Pkt);
+resend(true, _Opts, _Caps, _Pkt, _App, _Dict0, _RecvData) ->
+ 3005;
%% 6.1.8. Relaying and Proxying Requests
%%
@@ -610,11 +624,9 @@ resend(true, _Opts, Caps, Pkt, _App, Dict0, _RecvData) ->
resend(false,
Opts,
- #diameter_caps{origin_host = {_,OH}}
- = Caps,
+ #diameter_caps{origin_host = {_,OH}},
#diameter_packet{header = Hdr0,
- avps = Avps}
- = Pkt,
+ avps = Avps},
App,
Dict0,
#recvdata{service_name = SvcName,
@@ -623,7 +635,12 @@ resend(false,
Seq = diameter_session:sequence(Mask),
Hdr = Hdr0#diameter_header{hop_by_hop_id = Seq},
Msg = [Hdr, Route | Avps], %% reordered at encode
- resend(send_request(SvcName, App, Msg, Opts), Caps, Dict0, Pkt).
+ case send_request(SvcName, App, Msg, Opts) of
+ #diameter_packet{} = Ans ->
+ Ans;
+ _ ->
+ 3002 %% DIAMETER_UNABLE_TO_DELIVER.
+ end.
%% The incoming request is relayed with the addition of a
%% Route-Record. Note the requirement on the return from call/4 below,
%% which places a requirement on the value returned by the
@@ -640,85 +657,33 @@ resend(false,
%% RFC 6.3 says that a relay agent does not modify Origin-Host but
%% says nothing about a proxy. Assume it should behave the same way.
-%% resend/4
-%%
-%% Relay a reply to a relayed request.
-
-%% Answer from the peer: reset the hop by hop identifier.
-resend(#diameter_packet{bin = B}
- = Pkt,
- _Caps,
- _Dict0,
- #diameter_packet{header = #diameter_header{hop_by_hop_id = Id},
- transport_data = TD}) ->
- Pkt#diameter_packet{bin = diameter_codec:hop_by_hop_id(Id, B),
- transport_data = TD};
-%% TODO: counters
+%% is_loop/3
-%% Or not: DIAMETER_UNABLE_TO_DELIVER.
-resend(_, Caps, Dict0, Pkt) ->
- answer_message(3002, Caps, Dict0, Pkt).
+is_loop(Dict0,
+ #diameter_caps{origin_host = {OH,_}},
+ #diameter_packet{avps = Avps}) ->
+ {Code, _Flags, Vid} = Dict0:avp_header('Route-Record'),
+ is_loop(Code, Vid, OH, Avps).
-%% is_loop/5
+%% is_loop/4
%%
%% Is there a Route-Record AVP with our Origin-Host?
-is_loop(Code,
- Vid,
- Bin,
- _Dict0,
- [#diameter_avp{code = Code, vendor_id = Vid, data = Bin} | _]) ->
+is_loop(Code, Vid, Bin, [#diameter_avp{code = Code,
+ vendor_id = Vid,
+ data = Bin}
+ | _]) ->
true;
-is_loop(_, _, _, _, []) ->
+is_loop(_, _, _, []) ->
false;
-is_loop(Code, Vid, OH, Dict0, [_ | Avps])
+is_loop(Code, Vid, OH, [_ | Avps])
when is_binary(OH) ->
- is_loop(Code, Vid, OH, Dict0, Avps);
-
-is_loop(Code, Vid, OH, Dict0, Avps) ->
- is_loop(Code, Vid, list_to_binary(OH), Dict0, Avps).
+ is_loop(Code, Vid, OH, Avps);
-%% reply/6
-
-%% Local answer ...
-reply({MsgDict, Ans}, TPid, {AppDict, Dict0}, RecvData, Fs, ReqPkt) ->
- local(Ans, TPid, {MsgDict, AppDict, Dict0}, RecvData, Fs, ReqPkt);
-
-%% ... or relayed.
-reply(#diameter_packet{} = Pkt, _TPid, {AppDict, Dict0}, _, Fs, _ReqPkt) ->
- eval_packet(Pkt, Fs),
- {msg_dict(AppDict, Dict0, Pkt), Pkt}.
-
-%% local/6
-%%
-%% Send a locally originating reply.
-
-%% Skip the setting of Result-Code and Failed-AVP's below. This is
-%% undocumented and shouldn't be relied on.
-local([Msg], TPid, DictT, RecvData, Fs, ReqPkt)
- when is_list(Msg);
- is_tuple(Msg) ->
- local(Msg,
- TPid,
- DictT,
- RecvData,
- Fs,
- ReqPkt#diameter_packet{errors = []});
-
-local(Msg,
- TPid,
- {MsgDict, AppDict, Dict0},
- #recvdata{codec = Opts},
- Fs,
- ReqPkt) ->
- Pkt = encode({MsgDict, AppDict},
- TPid,
- make_answer_packet(Msg, ReqPkt, MsgDict, Dict0),
- Opts,
- Fs),
- {MsgDict, Pkt}.
+is_loop(Code, Vid, OH, Avps) ->
+ is_loop(Code, Vid, list_to_binary(OH), Avps).
%% select_error/3
%%
@@ -999,10 +964,14 @@ failed(Rec, FailedAvp, Dict) ->
%% Error-Message AVP is not intended to be useful in real-time, and
%% SHOULD NOT be expected to be parsed by network entities.
-%% answer_message/5
+%% answer_message/4
-answer_message(OH, OR, RC, Dict0, #diameter_packet{avps = Avps,
- errors = Es}) ->
+answer_message(RC,
+ Dict0,
+ #diameter_caps{origin_host = {OH,_},
+ origin_realm = {OR,_}},
+ #diameter_packet{avps = Avps,
+ errors = Es}) ->
{Code, _, Vid} = Dict0:avp_header('Session-Id'),
['answer-message', {'Origin-Host', OH},
{'Origin-Realm', OR},
@@ -1367,9 +1336,9 @@ send_request({{TPid, _Caps} = TC, App}
ReqPkt = make_request_packet(Msg, Pkt),
EncPkt = encode(App#diameter_app.dictionary,
TPid,
- ReqPkt,
SvcOpts,
- Fs),
+ ReqPkt),
+ eval_packet(EncPkt, Fs),
T = send_R(ReqPkt, EncPkt, Transport, CallOpts, Caller, SvcName),
Ans = recv_answer(SvcName, App, CallOpts, T),
handle_answer(SvcName, SvcOpts, App, Ans);
@@ -1648,7 +1617,8 @@ resend_request({{{TPid, _Caps} = TC, App}, SvcOpts},
of
[ReqPkt | Fs] ->
AppDict = App#diameter_app.dictionary,
- EncPkt = encode(AppDict, TPid, ReqPkt, SvcOpts, Fs),
+ EncPkt = encode(AppDict, TPid, SvcOpts, ReqPkt),
+ eval_packet(EncPkt, Fs),
Req = Req0#request{peer = TC,
packet = ReqPkt},
?LOG(retransmission, EncPkt#diameter_packet.header),
@@ -1698,13 +1668,6 @@ msg(#diameter_packet{msg = undefined, bin = Bin}) ->
msg(#diameter_packet{msg = Msg}) ->
Msg.
-%% encode/5
-
-encode(Dict, TPid, Pkt, Opts, Fs) ->
- P = encode(Dict, TPid, Opts, Pkt),
- eval_packet(P, Fs),
- P.
-
%% encode/4
%% Note that prepare_request can return a diameter_packet containing a
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-03 05:24:29 +0000