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authorAnders Svensson <[email protected]>2017-08-18 11:00:37 +0200
committerAnders Svensson <[email protected]>2017-08-18 11:00:37 +0200
commitf392006644991074d2c4d5055773409c5e0503d7 (patch)
treea066b805a6419f0cc3d0384437a9729a5fe1cf4a /lib/diameter/src/base
parent196bf1ada0be5f5f2927a2028ef38a7547ec3db6 (diff)
parentd8d3c2a36045bcbe2ae5fd8f08b30a5d103f7bac (diff)
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Merge branch 'anders/diameter/performance/OTP-14521' into maint
* anders/diameter/performance/OTP-14521: Work around unexpected common_test behaviour Randomly skip groups in traffic suite Randomly disable traffic counters in traffic suite Add service_opt() traffic_counters Fix type spec Split AVPs at decode Avoid unnecessary copying of binaries in diameter_tcp Don't update diameter_tcp state unnecessarily Don't update diameter_tcp state unnecessarily Simplify extraction of incoming Diameter messages in diameter_tcp Restructure/simplify message reception in diameter_peer_fsm Sleep randomly at the start of (parallel) traffic testcases Fix ct return value in traffic suite Fix type spec Optimize sub-binaries Optimize sub-binaries Count AVPs in #diameter_avp.index Don't extract options unnecessarily at encode Redo message decode as a single pass
Diffstat (limited to 'lib/diameter/src/base')
-rw-r--r--lib/diameter/src/base/diameter.erl1
-rw-r--r--lib/diameter/src/base/diameter_codec.erl182
-rw-r--r--lib/diameter/src/base/diameter_config.erl3
-rw-r--r--lib/diameter/src/base/diameter_gen.erl758
-rw-r--r--lib/diameter/src/base/diameter_peer_fsm.erl153
-rw-r--r--lib/diameter/src/base/diameter_service.erl1
-rw-r--r--lib/diameter/src/base/diameter_traffic.erl313
-rw-r--r--lib/diameter/src/base/diameter_watchdog.erl2
8 files changed, 675 insertions, 738 deletions
diff --git a/lib/diameter/src/base/diameter.erl b/lib/diameter/src/base/diameter.erl
index c919ff4c93..2e18a1d903 100644
--- a/lib/diameter/src/base/diameter.erl
+++ b/lib/diameter/src/base/diameter.erl
@@ -353,6 +353,7 @@ call(SvcName, App, Message) ->
| {sequence, sequence() | evaluable()}
| {share_peers, remotes()}
| {decode_format, decode_format()}
+ | {traffic_counters, boolean()}
| {string_decode, boolean()}
| {strict_arities, true | strict_arities()}
| {strict_mbit, boolean()}
diff --git a/lib/diameter/src/base/diameter_codec.erl b/lib/diameter/src/base/diameter_codec.erl
index 9b21bf4141..63e39b12d1 100644
--- a/lib/diameter/src/base/diameter_codec.erl
+++ b/lib/diameter/src/base/diameter_codec.erl
@@ -110,7 +110,7 @@ encode(Mod, Opts, Msg) ->
enc(_, Opts, #diameter_packet{msg = [#diameter_header{} = Hdr | As]}
= Pkt) ->
- try encode_avps(reorder(As), Opts) of
+ try encode_avps(As, Opts) of
Avps ->
Bin = list_to_binary(Avps),
Len = 20 + size(Bin),
@@ -206,51 +206,12 @@ values(Avps) ->
%% Message as a list of #diameter_avp{} ...
encode_avps(_, _, [#diameter_avp{} | _] = Avps, Opts) ->
- encode_avps(reorder(Avps), Opts);
+ encode_avps(Avps, Opts);
%% ... or as a tuple list or record.
encode_avps(Mod, MsgName, Values, Opts) ->
Mod:encode_avps(MsgName, Values, Opts).
-%% reorder/1
-%%
-%% Reorder AVPs for the relay case using the index field of
-%% diameter_avp records. Decode populates this field in collect_avps
-%% and presents AVPs in reverse order. A relay then sends the reversed
-%% list with a Route-Record AVP prepended. The goal here is just to do
-%% lists:reverse/1 in Grouped AVPs and the outer list, but only in the
-%% case there are indexed AVPs at all, so as not to reverse lists that
-%% have been explicilty sent (unindexed, in the desired order) as a
-%% diameter_avp list. The effect is the same as lists:keysort/2, but
-%% only on the cases we expect, not a general sort.
-
-reorder(Avps) ->
- case reorder(Avps, []) of
- false ->
- Avps;
- Sorted ->
- Sorted
- end.
-
-%% reorder/3
-
-%% In case someone has reversed the list already. (Not likely.)
-reorder([#diameter_avp{index = 0} | _] = Avps, Acc) ->
- Avps ++ Acc;
-
-%% Assume indexed AVPs are in reverse order.
-reorder([#diameter_avp{index = N} = A | Avps], Acc)
- when is_integer(N) ->
- lists:reverse(Avps, [A | Acc]);
-
-%% An unindexed AVP.
-reorder([H | T], Acc) ->
- reorder(T, [H | Acc]);
-
-%% No indexed members.
-reorder([], _) ->
- false.
-
%% encode_avps/2
encode_avps(Avps, Opts) ->
@@ -327,13 +288,7 @@ decode(Mod, AppMod, Opts, Pkt) ->
%% Relay application: just extract the avp's without any decoding of
%% their data since we don't know the application in question.
decode(?APP_ID_RELAY, _, _, _, #diameter_packet{} = Pkt) ->
- case collect_avps(Pkt) of
- {E, As} ->
- Pkt#diameter_packet{avps = As,
- errors = [E]};
- As ->
- Pkt#diameter_packet{avps = As}
- end;
+ collect_avps(Pkt);
%% Otherwise decode using the dictionary.
decode(_, Mod, AppMod, Opts, #diameter_packet{header = Hdr} = Pkt) ->
@@ -342,35 +297,31 @@ decode(_, Mod, AppMod, Opts, #diameter_packet{header = Hdr} = Pkt) ->
is_error = IsError}
= Hdr,
- MsgName = if IsError andalso not IsRequest ->
+ MsgName = if IsError, not IsRequest ->
'answer-message';
true ->
Mod:msg_name(CmdCode, IsRequest)
end,
- decode_avps(MsgName, Mod, AppMod, Opts, Pkt, collect_avps(Pkt));
+ decode_avps(MsgName, Mod, AppMod, Opts, Pkt);
decode(Id, Mod, AppMod, Opts, Bin)
when is_binary(Bin) ->
decode(Id, Mod, AppMod, Opts, #diameter_packet{header = decode_header(Bin),
bin = Bin}).
-%% decode_avps/6
+%% decode_avps/5
-decode_avps(MsgName, Mod, AppMod, Opts, Pkt, {E, Avps}) ->
- ?LOG(invalid_avp_length, Pkt#diameter_packet.header),
- #diameter_packet{errors = Failed}
- = P
- = decode_avps(MsgName, Mod, AppMod, Opts, Pkt, Avps),
- P#diameter_packet{errors = [E | Failed]};
-
-decode_avps('', _, _, _, Pkt, Avps) -> %% unknown message ...
- ?LOG(unknown_message, Pkt#diameter_packet.header),
- Pkt#diameter_packet{avps = lists:reverse(Avps),
- errors = [3001]}; %% DIAMETER_COMMAND_UNSUPPORTED
+decode_avps('', _, _, _, #diameter_packet{header = H, %% unknown message
+ bin = Bin}
+ = Pkt) ->
+ ?LOG(unknown_message, H),
+ Pkt#diameter_packet{avps = collect_avps(Bin),
+ errors = [3001]}; %% DIAMETER_COMMAND_UNSUPPORTED
%% msg = undefined identifies this case.
-decode_avps(MsgName, Mod, AppMod, Opts, Pkt, Avps) -> %% ... or not
+decode_avps(MsgName, Mod, AppMod, Opts, #diameter_packet{bin = Bin} = Pkt) ->
+ {_, Avps} = split_binary(Bin, 20),
{Rec, As, Errors} = Mod:decode_avps(MsgName,
Avps,
Opts#{dictionary => AppMod,
@@ -380,6 +331,8 @@ decode_avps(MsgName, Mod, AppMod, Opts, Pkt, Avps) -> %% ... or not
errors = Errors,
avps = As}.
+%% reformat/3
+
reformat(MsgName, Avps, #{decode_format := T})
when T == map;
T == list ->
@@ -524,24 +477,21 @@ msg_id(<<_:32, Rbit:1, _:7, CmdCode:24, ApplId:32, _/binary>>) ->
%%% # collect_avps/1
%%% ---------------------------------------------------------------------------
-%% Note that the returned list of AVP's is reversed relative to their
-%% order in the binary. Note also that grouped avp's aren't unraveled,
-%% only those at the top level.
+%% This is only used for the relay decode. Note that grouped avp's
+%% aren't unraveled, only those at the top level.
--spec collect_avps(#diameter_packet{} | binary())
- -> [Avp]
- | {Error, [Avp]}
- when Avp :: #diameter_avp{},
- Error :: {5014, #diameter_avp{}}.
+-spec collect_avps(#diameter_packet{})
+ -> #diameter_packet{};
+ (binary())
+ -> [#diameter_avp{}].
-collect_avps(#diameter_packet{bin = <<_:20/binary, Avps/binary>>}) ->
- collect_avps(Avps, 0, []);
+collect_avps(#diameter_packet{bin = Bin} = Pkt) ->
+ Pkt#diameter_packet{avps = collect_avps(Bin)};
-collect_avps(Bin)
- when is_binary(Bin) ->
- collect_avps(Bin, 0, []).
+collect_avps(<<_:20/binary, Avps/binary>>) ->
+ collect(Avps).
-%% collect_avps/3
+%% collect/1
%% 0 1 2 3
%% 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
@@ -555,66 +505,48 @@ collect_avps(Bin)
%% | Data ...
%% +-+-+-+-+-+-+-+-+
-collect_avps(<<Code:32, V:1, M:1, P:1, _:5, Len:24, I:V/unit:32, Rest/binary>>,
- N,
- Acc) ->
- collect_avps(Code,
- if 1 == V -> I; 0 == V -> undefined end,
- 1 == M,
- 1 == P,
- Len - 8 - V*4, %% Might be negative, which ensures
- ?PAD(Len), %% failure of the Data match below.
- Rest,
- N,
- Acc);
-
-collect_avps(<<>>, _, Acc) ->
- Acc;
+collect(<<Code:32, V:1, M:1, P:1, _:5, Len:24, I:V/unit:32, Rest/binary>>) ->
+ collect(Rest,
+ Code,
+ if 1 == V -> I; 0 == V -> undefined end,
+ Len - 8 - V*4, %% Might be negative, which ensures
+ ?PAD(Len), %% failure of the match below.
+ 1 == M,
+ 1 == P);
+
+collect(<<>>) ->
+ [];
%% Header is truncated. pack_avp/1 will pad this at encode if sent in
%% a Failed-AVP.
-collect_avps(Bin, _, Acc) ->
- {{5014, #diameter_avp{data = Bin}}, Acc}.
-
-%% collect_avps/9
+collect(Bin) ->
+ [#diameter_avp{data = {5014, Bin}}].
-%% Duplicate the diameter_avp creation in each branch below to avoid
-%% modifying the record, which profiling has shown to be a relatively
-%% costly part of building the list.
+%% collect/7
-collect_avps(Code, VendorId, M, P, Len, Pad, Rest, N, Acc) ->
- case Rest of
- <<Data:Len/binary, _:Pad/binary, T/binary>> ->
+collect(Bin, Code, Vid, DataLen, Pad, M, P) ->
+ case Bin of
+ <<Data:DataLen/binary, _:Pad/binary, Rest/binary>> ->
Avp = #diameter_avp{code = Code,
- vendor_id = VendorId,
+ vendor_id = Vid,
is_mandatory = M,
need_encryption = P,
- data = Data,
- index = N},
- collect_avps(T, N+1, [Avp | Acc]);
+ data = Data},
+ [Avp | collect(Rest)];
_ ->
%% Length in header points past the end of the message, or
- %% doesn't span the header. As stated in the 6733 text
- %% above, it's sufficient to return a zero-filled minimal
- %% payload if this is a request. Do this (in cases that we
- %% know the type) by inducing a decode failure and letting
- %% the dictionary's decode (in diameter_gen) deal with it.
- %%
- %% Note that the extra bit can only occur in the trailing
- %% AVP of a message or Grouped AVP, since a faulty AVP
- %% Length is otherwise indistinguishable from a correct
- %% one here, as we don't know the types of the AVPs being
- %% extracted.
- Avp = #diameter_avp{code = Code,
- vendor_id = VendorId,
- is_mandatory = M,
- need_encryption = P,
- data = {5014, Rest},
- index = N},
- [Avp | Acc]
+ %% doesn't span the header. Note that an length error can
+ %% only occur in the trailing AVP of a message or Grouped
+ %% AVP, since a faulty AVP Length is otherwise
+ %% indistinguishable from a correct one here, as we don't
+ %% know the types of the AVPs being extracted.
+ [#diameter_avp{code = Code,
+ vendor_id = Vid,
+ is_mandatory = M,
+ need_encryption = P,
+ data = {5014, Bin}}]
end.
-
%% 3588:
%%
%% DIAMETER_INVALID_AVP_LENGTH 5014
diff --git a/lib/diameter/src/base/diameter_config.erl b/lib/diameter/src/base/diameter_config.erl
index 2b069f40cc..f1b6e56782 100644
--- a/lib/diameter/src/base/diameter_config.erl
+++ b/lib/diameter/src/base/diameter_config.erl
@@ -715,6 +715,7 @@ make_config(SvcName, Opts) ->
{true, strict_arities},
{true, strict_mbit},
{record, decode_format},
+ {true, traffic_counters},
{true, string_decode},
{[], spawn_opt}]),
@@ -760,6 +761,7 @@ opt(K, false = B)
K == strict_arities;
K == strict_mbit;
K == decode_format;
+ K == traffic_counters;
K == string_decode ->
B;
@@ -768,6 +770,7 @@ opt(K, true = B)
K == use_shared_peers;
K == strict_arities;
K == strict_mbit;
+ K == traffic_counters;
K == string_decode ->
B;
diff --git a/lib/diameter/src/base/diameter_gen.erl b/lib/diameter/src/base/diameter_gen.erl
index 3d0612c294..7a1a46ec52 100644
--- a/lib/diameter/src/base/diameter_gen.erl
+++ b/lib/diameter/src/base/diameter_gen.erl
@@ -26,6 +26,14 @@
-module(diameter_gen).
+-compile({inline, [incr/8,
+ incr/4,
+ field/1,
+ setopts/4,
+ avp_arity/5,
+ set_failed/2,
+ set_strict/3]}).
+
-export([encode_avps/3,
decode_avps/3,
grouped_avp/4,
@@ -60,8 +68,9 @@
| no_return().
encode_avps(Name, Vals, #{module := Mod} = Opts) ->
+ Strict = mget(strict_arities, Opts, encode),
try
- encode(Name, Vals, Opts, Mod)
+ encode(Name, Vals, Opts, Strict, Mod)
catch
throw: {?MODULE, Reason} ->
diameter_lib:log({encode, error},
@@ -78,87 +87,88 @@ encode_avps(Name, Vals, #{module := Mod} = Opts) ->
erlang:error({encode_failure, Reason, Name, Stack})
end.
-%% encode/4
-
-encode(Name, Vals, #{ordered_encode := false} = Opts, Mod)
- when is_list(Vals) ->
- lists:map(fun({F,V}) -> encode(Name, F, V, Opts, Mod) end, Vals);
+%% encode/5
-encode(Name, Vals, Opts, Mod)
+encode(Name, Vals, Opts, Strict, Mod)
when is_list(Vals) ->
- encode(Name, Mod:'#set-'(Vals, newrec(Mod, Name)), Opts, Mod);
+ case Opts of
+ #{ordered_encode := false} ->
+ lists:map(fun({F,V}) -> encode(Name, F, V, Opts, Strict, Mod) end,
+ Vals);
+ _ ->
+ Rec = Mod:'#set-'(Vals, newrec(Mod, Name)),
+ encode(Name, Rec, Opts, Strict, Mod)
+ end;
-encode(Name, Map, Opts, Mod)
+encode(Name, Map, Opts, Strict, Mod)
when is_map(Map) ->
- [enc(Name, F, A, V, Opts, Mod) || {F,A} <- Mod:avp_arity(Name),
- V <- [maps:get(F, Map, undefined)]];
+ [enc(Name, F, A, V, Opts, Strict, Mod) || {F,A} <- Mod:avp_arity(Name),
+ V <- [mget(F, Map, undefined)]];
-encode(Name, Rec, Opts, Mod) ->
- [encode(Name, F, V, Opts, Mod) || {F,V} <- Mod:'#get-'(Rec)].
+encode(Name, Rec, Opts, Strict, Mod) ->
+ [encode(Name, F, V, Opts, Strict, Mod) || {F,V} <- Mod:'#get-'(Rec)].
-%% encode/5
+%% encode/6
-encode(Name, AvpName, Values, #{strict_arities := T} = Opts, Mod)
- when T /= encode ->
- enc(Name, AvpName, ?ANY, Values, Opts, Mod);
+encode(Name, AvpName, Values, Opts, Strict, Mod)
+ when Strict /= encode ->
+ enc(Name, AvpName, ?ANY, Values, Opts, Strict, Mod);
-encode(Name, AvpName, Values, Opts, Mod) ->
- enc(Name, AvpName, Mod:avp_arity(Name, AvpName), Values, Opts, Mod).
+encode(Name, AvpName, Values, Opts, Strict, Mod) ->
+ Arity = Mod:avp_arity(Name, AvpName),
+ enc(Name, AvpName, Arity, Values, Opts, Strict, Mod).
-%% enc/6
+%% enc/7
-enc(Name, AvpName, Arity, Values, #{strict_arities := T} = Opts, Mod)
- when T /= encode, Arity /= ?ANY ->
- enc(Name, AvpName, ?ANY, Values, Opts, Mod);
+enc(Name, AvpName, Arity, Values, Opts, Strict, Mod)
+ when Strict /= encode, Arity /= ?ANY ->
+ enc(Name, AvpName, ?ANY, Values, Opts, Strict, Mod);
-enc(_, AvpName, 1, undefined, _, _) ->
+enc(_, AvpName, 1, undefined, _, _, _) ->
?THROW([mandatory_avp_missing, AvpName]);
-enc(Name, AvpName, 1, Value, Opts, Mod) ->
+enc(Name, AvpName, 1, Value, Opts, _, Mod) ->
H = avp_header(AvpName, Mod),
enc1(Name, AvpName, H, Value, Opts, Mod);
-enc(_, _, {0,_}, [], _, _) ->
+enc(_, _, {0,_}, [], _, _, _) ->
[];
-enc(_, _, _, undefined, _, _) ->
+enc(_, _, _, undefined, _, _, _) ->
[];
%% Be forgiving when a list of values is expected. If the value itself
%% is a list then the user has to wrap it to avoid each member from
%% being interpreted as an individual AVP value.
-enc(Name, AvpName, Arity, V, Opts, Mod)
+enc(Name, AvpName, Arity, V, Opts, Strict, Mod)
when not is_list(V) ->
- enc(Name, AvpName, Arity, [V], Opts, Mod);
+ enc(Name, AvpName, Arity, [V], Opts, Strict, Mod);
-enc(Name, AvpName, {Min, Max}, Values, Opts, Mod) ->
+enc(Name, AvpName, {Min, Max}, Values, Opts, Strict, Mod) ->
H = avp_header(AvpName, Mod),
- enc(Name, AvpName, H, Min, 0, Max, Values, Opts, Mod).
-
-%% enc/9
+ enc(Name, AvpName, H, Min, 0, Max, Values, Opts, Strict, Mod).
-enc(Name, AvpName, H, Min, N, '*', Vs, Opts, Mod)
- when Min =< N ->
- [enc1(Name, AvpName, H, V, Opts, Mod) || V <- Vs];
+%% enc/10
-enc(Name, AvpName, H, _, _, _, Vs, #{strict_arities := T} = Opts, Mod)
- when T /= encode ->
+enc(Name, AvpName, H, Min, N, Max, Vs, Opts, Strict, Mod)
+ when Strict /= encode;
+ Max == '*', Min =< N ->
[enc1(Name, AvpName, H, V, Opts, Mod) || V <- Vs];
-enc(_, AvpName, _, Min, N, _, [], _, _)
+enc(_, AvpName, _, Min, N, _, [], _, _, _)
when N < Min ->
?THROW([repeated_avp_insufficient_arity, AvpName, Min, N]);
-enc(_, _, _, _, _, _, [], _, _) ->
+enc(_, _, _, _, _, _, [], _, _, _) ->
[];
-enc(_, AvpName, _, _, N, Max, _, _, _)
+enc(_, AvpName, _, _, N, Max, _, _, _, _)
when Max =< N ->
?THROW([repeated_avp_excessive_arity, AvpName, Max]);
-enc(Name, AvpName, H, Min, N, Max, [V|Vs], Opts, Mod) ->
+enc(Name, AvpName, H, Min, N, Max, [V|Vs], Opts, Strict, Mod) ->
[enc1(Name, AvpName, H, V, Opts, Mod)
- | enc(Name, AvpName, H, Min, N+1, Max, Vs, Opts, Mod)].
+ | enc(Name, AvpName, H, Min, N+1, Max, Vs, Opts, Strict, Mod)].
%% avp_header/2
@@ -221,115 +231,186 @@ enc(AvpName, Value, Opts, Mod) ->
%% # decode_avps/3
%% ---------------------------------------------------------------------------
--spec decode_avps(parent_name(), [#diameter_avp{}], map())
+-spec decode_avps(parent_name(), binary(), map())
-> {parent_record(), [avp()], Failed}
when Failed :: [{5000..5999, #diameter_avp{}}].
-decode_avps(Name, Recs, #{module := Mod, decode_format := Fmt} = Opts) ->
- {Avps, {Rec, AM, Failed}}
- = mapfoldl(fun(T,A) -> decode(Name, Opts, Mod, T, A) end,
- {newrec(Fmt, Mod, Name, Opts), #{}, []},
- Recs),
- %% AM counts the number of top-level AVPs, which arities/5 then
- %% uses when adding 500[59] errors.
- Arities = Mod:avp_arity(Name),
- {reformat(Name, Rec, Arities, Mod, Opts, Fmt),
+decode_avps(Name, Bin, #{module := Mod, decode_format := Fmt} = Opts) ->
+ Strict = mget(strict_arities, Opts, decode),
+ [AM, Avps, Failed | Rec]
+ = decode(Bin, Name, Mod, Fmt, Strict, Opts, #{}),
+ %% AM counts the number of top-level AVPs, which missing/5 then
+ %% uses when appending 5005 errors.
+ {reformat(Name, Rec, Strict, Mod, Fmt),
Avps,
- Failed ++ arities(Arities, Opts, Mod, AM, Avps)}.
+ Failed ++ missing(Name, Strict, Mod, Opts, AM)}.
%% Append arity errors so that errors are reported in the order
%% encountered. Failed-AVP should typically contain the first
%% error encountered.
-%% mapfoldl/3
-%%
-%% Like lists:mapfoldl/3, but don't reverse the list.
+%% decode/7
-mapfoldl(F, Acc, List) ->
- mapfoldl(F, Acc, List, []).
+decode(<<Code:32, V:1, M:1, P:1, _:5, Len:24, I:V/unit:32, Rest/binary>>,
+ Name,
+ Mod,
+ Fmt,
+ Strict,
+ Opts,
+ AM) ->
+ decode(Rest,
+ Code,
+ if 1 == V -> I; true -> undefined end,
+ Len - 8 - 4*V, %% possibly negative, causing case match to fail
+ (4 - (Len rem 4)) rem 4,
+ 1 == M,
+ 1 == P,
+ Name,
+ Mod,
+ Fmt,
+ Strict,
+ Opts,
+ AM);
+
+decode(<<>>, Name, Mod, Fmt, Strict, _, AM) ->
+ [AM, [], [] | newrec(Fmt, Mod, Name, Strict)];
+
+decode(Bin, Name, Mod, Fmt, Strict, _, AM) ->
+ Avp = #diameter_avp{data = Bin},
+ [AM, [Avp], [{5014, Avp}] | newrec(Fmt, Mod, Name, Strict)].
+
+%% decode/13
+
+decode(Bin, Code, Vid, DataLen, Pad, M, P, Name, Mod, Fmt, Strict, Opts0, AM0) ->
+ case Bin of
+ <<Data:DataLen/binary, _:Pad/binary, T/binary>> ->
+ {NameT, AvpName, Arity, {Idx, AM}}
+ = incr(Name, Code, Vid, M, Mod, Strict, Opts0, AM0),
+
+ Opts = setopts(NameT, Name, M, Opts0),
+ %% Not AvpName or else a failed Failed-AVP
+ %% decode is packed into 'AVP'.
+
+ Avp = #diameter_avp{code = Code,
+ vendor_id = Vid,
+ is_mandatory = M,
+ need_encryption = P,
+ data = Data,
+ name = name(NameT),
+ type = type(NameT),
+ index = Idx},
+
+ Dec = decode(Data, Name, NameT, Mod, Opts, Avp), %% decode
+ Acc = decode(T, Name, Mod, Fmt, Strict, Opts, AM), %% recurse
+ acc(Acc, Dec, Name, AvpName, Arity, Strict, Mod, Opts);
+ _ ->
+ {NameT, _AvpName, _Arity, {Idx, AM}}
+ = incr(Name, Code, Vid, M, Mod, Strict, Opts0, AM0),
+
+ Avp = #diameter_avp{code = Code,
+ vendor_id = Vid,
+ is_mandatory = M,
+ need_encryption = P,
+ data = Bin,
+ name = name(NameT),
+ type = type(NameT),
+ index = Idx},
+
+ [AM, [Avp], [{5014, Avp}] | newrec(Fmt, Mod, Name, Strict)]
+ end.
-mapfoldl(F, Acc0, [T|Rest], List) ->
- {B, Acc} = F(T, Acc0),
- mapfoldl(F, Acc, Rest, [B|List]);
-mapfoldl(_, Acc, [], List) ->
- {List, Acc}.
+%% incr/8
-%% 3588/6733:
-%%
-%% DIAMETER_MISSING_AVP 5005
-%% The request did not contain an AVP that is required by the Command
-%% Code definition. If this value is sent in the Result-Code AVP, a
-%% Failed-AVP AVP SHOULD be included in the message. The Failed-AVP
-%% AVP MUST contain an example of the missing AVP complete with the
-%% Vendor-Id if applicable. The value field of the missing AVP
-%% should be of correct minimum length and contain zeros.
+incr(Name, Code, Vid, M, Mod, Strict, Opts, AM0) ->
+ NameT = Mod:avp_name(Code, Vid), %% {AvpName, Type} | 'AVP'
+ AvpName = field(NameT),
+ Arity = avp_arity(Name, AvpName, Mod, Opts, M),
+ {NameT, AvpName, Arity, incr(AvpName, Arity, Strict, AM0)}.
+
+%% Data is a truncated header if command_code = undefined, otherwise
+%% payload bytes. The former is padded to the length of a header if
+%% the AVP reaches an outgoing encode.
%%
-%% DIAMETER_AVP_OCCURS_TOO_MANY_TIMES 5009
-%% A message was received that included an AVP that appeared more
-%% often than permitted in the message definition. The Failed-AVP
-%% AVP MUST be included and contain a copy of the first instance of
-%% the offending AVP that exceeded the maximum number of occurrences
+%% RFC 6733 says that an AVP returned with 5014 can contain a minimal
+%% payload for the AVP's type, but don't always know the type.
-%% arities/5
+setopts('AVP', _, _, Opts) ->
+ Opts;
-arities(_, #{strict_arities := T}, _, _, _)
- when T /= decode ->
- [];
+setopts({_, Type}, Name, M, Opts) ->
+ set_failed(Name, set_strict(Type, M, Opts)).
-arities(Arities, Opts, Mod, AM, Avps) ->
- [Count, Map | More]
- = lists:foldl(fun({N,T}, A) -> more(N, T, Opts, Mod, AM, A) end,
- [0, #{}],
- Arities),
- less(Count, Map, Avps) ++ lists:reverse(More).
+%% incr/4
-%% more/6
+incr(F, A, SA, AM)
+ when F == 'AVP';
+ A == ?ANY;
+ A == 0;
+ SA /= decode ->
+ {undefined, AM};
-more(_Name, ?ANY, _Opts, _Mod, _AM, Acc) ->
- Acc;
+incr(AvpName, _, _, AM) ->
+ case AM of
+ #{AvpName := N} ->
+ {N, AM#{AvpName => N+1}};
+ _ ->
+ {0, AM#{AvpName => 1}}
+ end.
-more(Name, {Mn, Mx}, Opts, Mod, AM, Acc) ->
- more(Name, Mn, Mx, Opts, Mod, AM, Acc);
+%% mget/3
+%%
+%% Measurably faster than maps:get/3.
-more(Name, 1, Opts, Mod, AM, Acc) ->
- more(Name, 1, 1, Opts, Mod, AM, Acc).
+mget(Key, Map, Def) ->
+ case Map of
+ #{Key := V} ->
+ V;
+ _ ->
+ Def
+ end.
-%% more/7
+%% name/1
-more(Name, Mn, Mx, Opts, Mod, AM, Acc) ->
- macc(Name, Mn, maps:get(Name, AM, 0), Mx, Opts, Mod, Acc).
+name({Name, _}) ->
+ Name;
+name(_) ->
+ undefined.
-%% macc/7
+%% type/1
-macc(Name, Mn, N, _, Opts, Mod, [M, Map | T])
- when N < Mn ->
- [M, Map, {5005, empty_avp(Name, Opts, Mod)} | T];
+type({_, Type}) ->
+ Type;
+type(_) ->
+ undefined.
-macc(Name, _, N, Mx, _Opts, _Mod, [M, Map | T])
- when Mx < N ->
- K = N - Mx,
- [M + K, maps:put(Name, K, Map) | T];
+%% missing/5
-macc(_Name, _, _, _, _Opts, _Mod, Acc) ->
- Acc.
+missing(Name, decode, Mod, Opts, AM) ->
+ [{5005, empty_avp(N, Opts, Mod)} || {N,A} <- Mod:avp_arity(Name),
+ N /= 'AVP',
+ Mn <- [min_arity(A)],
+ 0 < Mn,
+ mget(N, AM, 0) < Mn];
-%% less/3
+missing(_, _, _, _, _) ->
+ [].
-less(0, _, _) ->
- [];
+%% 3588/6733:
+%%
+%% DIAMETER_MISSING_AVP 5005
+%% The request did not contain an AVP that is required by the Command
+%% Code definition. If this value is sent in the Result-Code AVP, a
+%% Failed-AVP AVP SHOULD be included in the message. The Failed-AVP
+%% AVP MUST contain an example of the missing AVP complete with the
+%% Vendor-Id if applicable. The value field of the missing AVP
+%% should be of correct minimum length and contain zeros.
-less(N, Map, [#diameter_avp{name = undefined} | Avps]) ->
- less(N, Map, Avps);
+%% min_arity/1
-less(N, Map, [#diameter_avp{name = Name} = Avp | Avps]) ->
- case Map of
- #{Name := 0} ->
- [{5009, Avp} | less(N-1, Map, Avps)];
- #{Name := M} ->
- less(N, maps:put(Name, M-1, Map), Avps);
- _ ->
- less(N, Map, Avps)
- end.
+min_arity(1) ->
+ 1;
+min_arity({Mn,_}) ->
+ Mn.
%% empty_avp/3
@@ -356,55 +437,18 @@ empty_avp(Name, Opts, Mod) ->
%% specific errors that can be described by this AVP are described in
%% the following section.
-%% decode/5
-
-decode(Name, Opts, Mod, Avp, Acc) ->
- #diameter_avp{code = Code, vendor_id = Vid}
- = Avp,
- N = Mod:avp_name(Code, Vid),
- case Opts of
- #{strict_arities := T} when T /= decode ->
- decode(Name, Opts, Mod, N, ?ANY, Avp, Acc);
- _ ->
- {Rec, AM, Failed} = Acc,
- F = field(N),
- A = Mod:avp_arity(Name, F),
- decode(Name, Opts, Mod, N, A, Avp, {Rec,
- incr(field(F, A), AM),
- Failed})
- end.
-
%% field/1
field({AvpName, _}) ->
AvpName;
-
field(_) ->
'AVP'.
-%% field/2
-
-field(_, 0) ->
- 'AVP';
-
-field(F, _) ->
- F.
-
-%% incr/2
-
-incr(Key, Map) ->
- maps:update_with(Key, fun incr/1, 1, Map).
-
-%% incr/1
-
-incr(N) ->
- N + 1.
-
-%% decode/7
+%% decode/6
%% AVP not in dictionary.
-decode(Name, Opts, Mod, 'AVP', Arity, Avp, Acc) ->
- decode_AVP(Name, Arity, Avp, Opts, Mod, Acc);
+decode(_Data, _Name, 'AVP', _Mod, _Opts, Avp) ->
+ Avp;
%% 6733, 4.4:
%%
@@ -453,20 +497,9 @@ decode(Name, Opts, Mod, 'AVP', Arity, Avp, Acc) ->
%% defined the RFC's "unrecognized", which is slightly stronger than
%% "not defined".)
-decode(Name, Opts0, Mod, {AvpName, Type}, Arity, Avp, Acc) ->
- #diameter_avp{data = Data, is_mandatory = M}
- = Avp,
-
- %% Whether or not to ignore an M-bit on an encapsulated AVP, or on
- %% all AVPs with the service_opt() strict_mbit.
- Opts1 = set_strict(Type, M, Opts0),
-
- %% Whether or not we're decoding within Failed-AVP and should
- %% ignore decode errors.
+decode(Data, Name, {AvpName, Type}, Mod, Opts, Avp) ->
#{dictionary := AppMod, failed_avp := Failed}
- = Opts
- = set_failed(Name, Opts1), %% Not AvpName or else a failed Failed-AVP
- %% decode is packed into 'AVP'.
+ = Opts,
%% Reset the dictionary for best-effort decode of Failed-AVP.
DecMod = if Failed -> AppMod;
@@ -479,103 +512,55 @@ decode(Name, Opts0, Mod, {AvpName, Type}, Arity, Avp, Acc) ->
try avp_decode(Data, AvpName, Opts, DecMod, Mod) of
{Rec, As} when Type == 'Grouped' ->
- A = Avp#diameter_avp{name = AvpName,
- value = Rec,
- type = Type},
- {[A|As], pack_avp(Name, Arity, A, Opts, Mod, Acc)};
-
+ A = Avp#diameter_avp{value = Rec},
+ [A | As];
V when Type /= 'Grouped' ->
- A = Avp#diameter_avp{name = AvpName,
- value = V,
- type = Type},
- {A, pack_avp(Name, Arity, A, Opts, Mod, Acc)}
+ Avp#diameter_avp{value = V}
catch
- throw: {?MODULE, {grouped, Error, ComponentAvps}} ->
- decode_error(Name,
- Error,
- ComponentAvps,
- Opts,
- Mod,
- Avp#diameter_avp{name = AvpName,
- data = trim(Avp#diameter_avp.data),
- type = Type},
- Acc);
-
+ throw: {?MODULE, T} ->
+ decode_error(Failed, T, Avp);
error: Reason ->
- decode_error(Name,
- Reason,
- Opts,
- Mod,
- Avp#diameter_avp{name = AvpName,
- data = trim(Avp#diameter_avp.data),
- type = Type},
- Acc)
+ decode_error(Failed, Reason, Name, Mod, Opts, Avp)
end.
-%% avp_decode/5
-
-avp_decode(Data, AvpName, Opts, Mod, Mod) ->
- Mod:avp(decode, Data, AvpName, Opts);
-
-avp_decode(Data, AvpName, Opts, Mod, _) ->
- Mod:avp(decode, Data, AvpName, Opts, Mod).
-
-%% trim/1
+%% decode_error/3
%%
-%% Remove any extra bit that was added in diameter_codec to induce a
-%% 5014 error.
-
-trim(#diameter_avp{data = Data} = Avp) ->
- Avp#diameter_avp{data = trim(Data)};
-
-trim({5014, Bin}) ->
- Bin;
-
-trim(Avps)
- when is_list(Avps) ->
- lists:map(fun trim/1, Avps);
+%% Error when decoding a grouped AVP.
-trim(Avp) ->
- Avp.
+decode_error(true, {Rec, _, _}, Avp) ->
+ Avp#diameter_avp{value = Rec};
-%% decode_error/7
-
-decode_error(Name, [_|Rec], _, #{failed_avp := true} = Opts, Mod, Avp, Acc) ->
- decode_AVP(Name, Avp#diameter_avp{value = Rec}, Opts, Mod, Acc);
-
-decode_error(Name, _, _, #{failed_avp := true} = Opts, Mod, Avp, Acc) ->
- decode_AVP(Name, Avp, Opts, Mod, Acc);
-
-decode_error(_, [Error | _], ComponentAvps, _, _, Avp, Acc) ->
- decode_error(Error, Avp, Acc, ComponentAvps);
-
-decode_error(_, Error, ComponentAvps, _, _, Avp, Acc) ->
- decode_error(Error, Avp, Acc, ComponentAvps).
+decode_error(false, {_, ComponentAvps, [{RC,A} | _]}, Avp) ->
+ {RC, [Avp | ComponentAvps], Avp#diameter_avp{data = [A]}}.
%% decode_error/6
+%%
+%% Error when decoding a non-grouped AVP.
-decode_error(Name, _Reason, #{failed_avp := true} = Opts, Mod, Avp, Acc) ->
- decode_AVP(Name, Avp, Opts, Mod, Acc);
+decode_error(true, _, _, _, _, Avp) ->
+ Avp;
-decode_error(Name, Reason, Opts, Mod, Avp, {Rec, AM, Failed}) ->
+decode_error(false, Reason, Name, Mod, Opts, Avp) ->
Stack = diameter_lib:get_stacktrace(),
- AvpName = Avp#diameter_avp.name,
diameter_lib:log(decode_error,
?MODULE,
?LINE,
- {Reason, Name, AvpName, Mod, Stack}),
- {Avp, {Rec, AM, [rc(Reason, Avp, Opts, Mod) | Failed]}}.
+ {Reason, Name, Avp#diameter_avp.name, Mod, Stack}),
+ rc(Reason, Avp, Opts, Mod).
-%% decode_error/4
+%% avp_decode/5
-decode_error({RC, ErrorData}, Avp, {Rec, AM, Failed}, ComponentAvps) ->
- E = Avp#diameter_avp{data = [ErrorData]},
- {[Avp | trim(ComponentAvps)], {Rec, AM, [{RC, E} | Failed]}}.
+avp_decode(Data, AvpName, Opts, Mod, Mod) ->
+ Mod:avp(decode, Data, AvpName, Opts);
-%% set_strict/3
+avp_decode(Data, AvpName, Opts, Mod, _) ->
+ Mod:avp(decode, Data, AvpName, Opts, Mod).
+%% set_strict/3
+%%
%% Set false as soon as we see a Grouped AVP that doesn't set the
%% M-bit, to ignore the M-bit on an encapsulated AVP.
+
set_strict('Grouped', false = M, #{strict_mbit := true} = Opts) ->
Opts#{strict_mbit := M};
set_strict(_, _, Opts) ->
@@ -592,86 +577,82 @@ set_failed('Failed-AVP', #{failed_avp := false} = Opts) ->
set_failed(_, Opts) ->
Opts.
-%% decode_AVP/5
-%%
-%% Don't know this AVP: see if it can be packed in an 'AVP' field
-%% undecoded. Note that the type field is 'undefined' in this case.
-
-decode_AVP(Name, Avp, #{strict_arities := T} = Opts, Mod, Acc)
- when T /= decode ->
- decode_AVP(Name, ?ANY, Avp, Opts, Mod, Acc);
-
-decode_AVP(Name, Avp, Opts, Mod, Acc) ->
- decode_AVP(Name, Mod:avp_arity(Name, 'AVP'), Avp, Opts, Mod, Acc).
-
-%% decode_AVP/6
-
-decode_AVP(Name, Arity, Avp, Opts, Mod, Acc) ->
- {trim(Avp), pack_AVP(Name, Arity, Avp, Opts, Mod, Acc)}.
-
-%% rc/2
-
-%% diameter_types will raise an error of this form to communicate
-%% DIAMETER_INVALID_AVP_LENGTH (5014). A module specified to a
-%% @custom_types tag in a dictionary file can also raise an error of
-%% this form.
-rc({'DIAMETER', 5014 = RC, _}, #diameter_avp{name = AvpName} = A, Opts, Mod) ->
- {RC, A#diameter_avp{data = Mod:empty_value(AvpName, Opts)}};
+%% acc/8
+
+acc([AM | Acc], As, Name, AvpName, Arity, Strict, Mod, Opts) ->
+ [AM | acc1(Acc, As, Name, AvpName, Arity, Strict, Mod, Opts)].
+
+%% acc1/8
+
+%% Faulty AVP, not grouped.
+acc1(Acc, {_RC, Avp} = E, _, _, _, _, _, _) ->
+ [Avps, Failed | Rec] = Acc,
+ [[Avp | Avps], [E | Failed] | Rec];
+
+%% Faulty component in grouped AVP.
+acc1(Acc, {RC, As, Avp}, _, _, _, _, _, _) ->
+ [Avps, Failed | Rec] = Acc,
+ [[As | Avps], [{RC, Avp} | Failed] | Rec];
+
+%% Grouped AVP ...
+acc1([Avps | Acc], [Avp|_] = As, Name, AvpName, Arity, Strict, Mod, Opts) ->
+ [[As|Avps] | acc2(Acc, Avp, Name, AvpName, Arity, Strict, Mod, Opts)];
+
+%% ... or not.
+acc1([Avps | Acc], Avp, Name, AvpName, Arity, Strict, Mod, Opts) ->
+ [[Avp|Avps] | acc2(Acc, Avp, Name, AvpName, Arity, Strict, Mod, Opts)].
+
+%% acc2/8
+
+%% No errors, but nowhere to pack.
+acc2(Acc, Avp, _, 'AVP', 0, _, _, _) ->
+ [Failed | Rec] = Acc,
+ [[{rc(Avp), Avp} | Failed] | Rec];
+
+%% No AVP of this name: try to pack as 'AVP'.
+acc2(Acc, Avp, Name, AvpName, 0, Strict, Mod, Opts) ->
+ M = Avp#diameter_avp.is_mandatory,
+ Arity = pack_arity(Name, AvpName, Opts, Mod, M),
+ acc2(Acc, Avp, Name, 'AVP', Arity, Strict, Mod, Opts);
+
+%% Relaxed arities.
+acc2(Acc, Avp, _, AvpName, Arity, Strict, Mod, _)
+ when Strict /= decode ->
+ pack(Arity, AvpName, Avp, Mod, Acc);
+
+%% No maximum arity.
+acc2(Acc, Avp, _, AvpName, {_,'*'} = Arity, _, Mod, _) ->
+ pack(Arity, AvpName, Avp, Mod, Acc);
+
+%% Or check.
+acc2(Acc, Avp, _, AvpName, Arity, _, Mod, _) ->
+ Mx = max_arity(Arity),
+ if Mx =< Avp#diameter_avp.index ->
+ [Failed | Rec] = Acc,
+ [[{5009, Avp} | Failed] | Rec];
+ true ->
+ pack(Arity, AvpName, Avp, Mod, Acc)
+ end.
-%% 3588:
+%% 3588/6733:
%%
-%% DIAMETER_INVALID_AVP_VALUE 5004
-%% The request contained an AVP with an invalid value in its data
-%% portion. A Diameter message indicating this error MUST include
-%% the offending AVPs within a Failed-AVP AVP.
-rc(_, Avp, _, _) ->
- {5004, Avp}.
-
-%% pack_avp/6
-
-pack_avp(Name, 0, Avp, Opts, Mod, Acc) ->
- pack_AVP(Name, Avp, Opts, Mod, Acc);
-
-pack_avp(_, Arity, #diameter_avp{name = AvpName} = Avp, _Opts, Mod, Acc) ->
- pack(Arity, AvpName, Avp, Mod, Acc).
-
-%% pack_AVP/5
+%% DIAMETER_AVP_OCCURS_TOO_MANY_TIMES 5009
+%% A message was received that included an AVP that appeared more
+%% often than permitted in the message definition. The Failed-AVP
+%% AVP MUST be included and contain a copy of the first instance of
+%% the offending AVP that exceeded the maximum number of occurrences
-pack_AVP(Name, Avp, #{strict_arities := T} = Opts, Mod, Acc)
- when T /= decode ->
- pack_AVP(Name, ?ANY, Avp, Opts, Mod, Acc);
+%% max_arity/1
-pack_AVP(Name, Avp, Opts, Mod, Acc) ->
- pack_AVP(Name, Mod:avp_arity(Name, 'AVP'), Avp, Opts, Mod, Acc).
+max_arity(1) ->
+ 1;
+max_arity({_,Mx}) ->
+ Mx.
-%% pack_AVP/6
+%% rc/1
-%% Length failure was induced because of a header/payload length
-%% mismatch. The AVP Length is reset to match the received data if
-%% this AVP is encoded in an answer message, since the length is
-%% computed.
-%%
-%% Data is a truncated header if command_code = undefined, otherwise
-%% payload bytes. The former is padded to the length of a header if
-%% the AVP reaches an outgoing encode in diameter_codec.
-%%
-%% RFC 6733 says that an AVP returned with 5014 can contain a minimal
-%% payload for the AVP's type, but in this case we don't know the
-%% type.
-
-pack_AVP(_, _, #diameter_avp{data = {5014 = RC, Data}} = Avp, _, _, Acc) ->
- {Rec, AM, Failed} = Acc,
- {Rec, AM, [{RC, Avp#diameter_avp{data = Data}} | Failed]};
-
-pack_AVP(Name, Arity, Avp, Opts, Mod, Acc) ->
- case pack_AVP(Name, Opts, Arity, Avp) of
- false ->
- M = Avp#diameter_avp.is_mandatory,
- {Rec, AM, Failed} = Acc,
- {Rec, AM, [{if M -> 5001; true -> 5008 end, Avp} | Failed]};
- true ->
- pack(Arity, 'AVP', Avp, Mod, Acc)
- end.
+rc(#diameter_avp{is_mandatory = M}) ->
+ if M -> 5001; true -> 5008 end.
%% 3588:
%%
@@ -686,42 +667,59 @@ pack_AVP(Name, Arity, Avp, Opts, Mod, Acc) ->
%% Failed-AVP AVP MUST be included and contain a copy of the
%% offending AVP.
-%% pack_AVP/4
+%% pack_arity/5
%% Give Failed-AVP special treatment since (1) it'll contain any
%% unrecognized mandatory AVP's and (2) the RFC 3588 grammar failed to
%% allow for Failed-AVP in an answer-message.
-pack_AVP(_, #{strict_arities := T}, _, _)
- when T /= decode ->
- true;
+pack_arity(Name, AvpName, _, Mod, M)
+ when Name == 'Failed-AVP';
+ Name == 'answer-message', AvpName == 'Failed-AVP';
+ not M ->
+ Mod:avp_arity(Name, 'AVP');
+%% Not testing just Name /= 'Failed-AVP' means we're changing the
+%% packing of AVPs nested within Failed-AVP, but the point of
+%% ignoring errors within Failed-AVP is to decode as much as
+%% possible, and failing because a mandatory AVP couldn't be
+%% packed into a dedicated field defeats that point.
-pack_AVP(_, _, 0, _) ->
- false;
+pack_arity(Name, _, #{strict_mbit := Strict, failed_avp := Failed}, Mod, _)
+ when not Strict;
+ Failed ->
+ Mod:avp_arity(Name, 'AVP');
-pack_AVP(Name,
- #{strict_mbit := Strict,
- failed_avp := Failed},
- _,
- #diameter_avp{is_mandatory = M,
- name = AvpName}) ->
-
- %% Not testing just Name /= 'Failed-AVP' means we're changing the
- %% packing of AVPs nested within Failed-AVP, but the point of
- %% ignoring errors within Failed-AVP is to decode as much as
- %% possible, and failing because a mandatory AVP couldn't be
- %% packed into a dedicated field defeats that point.
-
- Failed == true
- orelse Name == 'Failed-AVP'
- orelse (Name == 'answer-message' andalso AvpName == 'Failed-AVP')
- orelse not M
- orelse not Strict.
+pack_arity(_, _, _, _, _) ->
+ 0.
+
+%% avp_arity/5
+
+avp_arity(Name, 'AVP' = AvpName, Mod, Opts, M) ->
+ pack_arity(Name, AvpName, Opts, Mod, M);
+
+avp_arity(Name, AvpName, Mod, _, _) ->
+ Mod:avp_arity(Name, AvpName).
+
+%% rc/4
+
+%% Length error communicated from diameter_types or a
+%% @custom_types/@codecs module.
+rc({'DIAMETER', 5014 = RC, _}, #diameter_avp{name = AvpName} = A, Opts, Mod) ->
+ {RC, A#diameter_avp{data = Mod:empty_value(AvpName, Opts)}};
+
+%% 3588:
+%%
+%% DIAMETER_INVALID_AVP_VALUE 5004
+%% The request contained an AVP with an invalid value in its data
+%% portion. A Diameter message indicating this error MUST include
+%% the offending AVPs within a Failed-AVP AVP.
+rc(_, Avp, _, _) ->
+ {5004, Avp}.
%% pack/5
-pack(Arity, F, Avp, Mod, {Rec, AM, Failed}) ->
- {set(Arity, F, value(F, Avp), Mod, Rec), AM, Failed}.
+pack(Arity, F, Avp, Mod, [Failed | Rec]) ->
+ [Failed | set(Arity, F, value(F, Avp), Mod, Rec)].
%% set/5
@@ -730,7 +728,7 @@ set(_, _, _, _, false = No) ->
set(1, F, Value, _, Map)
when is_map(Map) ->
- maps:put(F, Value, Map);
+ Map#{F => Value};
set(_, F, V, _, Map)
when is_map(Map) ->
@@ -755,36 +753,28 @@ value(_, #diameter_avp{value = V}) ->
%% # grouped_avp/3
%% ---------------------------------------------------------------------------
--spec grouped_avp(decode, avp_name(), binary() | {5014, binary()}, term())
+%% Note that Grouped is the only AVP type that doesn't just return a
+%% decoded value, also returning the list of component diameter_avp
+%% records.
+
+-spec grouped_avp(decode, avp_name(), binary(), term())
-> {avp_record(), [avp()]};
(encode, avp_name(), avp_record() | avp_values(), term())
-> iolist()
| no_return().
-%% Length error induced by diameter_codec:collect_avps/1: the AVP
-%% length in the header was too short (insufficient for the extracted
-%% header) or too long (past the end of the message). An empty payload
-%% is sufficient according to the RFC text for 5014.
-grouped_avp(decode, _Name, {5014 = RC, _Bin}, _) ->
- ?THROW({grouped, {RC, []}, []});
-
-grouped_avp(decode, Name, Data, Opts) ->
- grouped_decode(Name, diameter_codec:collect_avps(Data), Opts);
+%% An error in decoding a component AVP throws the first faulty
+%% component, which a catch wraps in the Grouped AVP in question. A
+%% partially decoded record is only used when ignoring errors in
+%% Failed-AVP.
+grouped_avp(decode, Name, Bin, Opts) ->
+ {Rec, Avps, Es} = T = decode_avps(Name, Bin, Opts),
+ [] == Es orelse ?THROW(T),
+ {Rec, Avps};
grouped_avp(encode, Name, Data, Opts) ->
encode_avps(Name, Data, Opts).
-%% grouped_decode/2
-%%
-%% Note that Grouped is the only AVP type that doesn't just return a
-%% decoded value, also returning the list of component diameter_avp
-%% records.
-
-%% Length error in trailing component AVP.
-grouped_decode(_Name, {Error, Acc}, _) ->
- {5014, Avp} = Error,
- ?THROW({grouped, Error, [Avp | Acc]});
-
%% 7.5. Failed-AVP AVP
%% In the case where the offending AVP is embedded within a Grouped AVP,
@@ -795,15 +785,6 @@ grouped_decode(_Name, {Error, Acc}, _) ->
%% to the single offending AVP. This enables the recipient to detect
%% the location of the offending AVP when embedded in a group.
-%% An error in decoding a component AVP throws the first faulty
-%% component, which the catch in d/3 wraps in the Grouped AVP in
-%% question. A partially decoded record is only used when ignoring
-%% errors in Failed-AVP.
-grouped_decode(Name, ComponentAvps, Opts) ->
- {Rec, Avps, Es} = decode_avps(Name, ComponentAvps, Opts),
- [] == Es orelse ?THROW({grouped, [{_,_} = hd(Es) | Rec], Avps}),
- {Rec, Avps}.
-
%% ---------------------------------------------------------------------------
%% # empty_group/2
%% ---------------------------------------------------------------------------
@@ -840,7 +821,7 @@ empty(Name, #{module := Mod} = Opts) ->
newrec(false = No, _, _, _) ->
No;
-newrec(record, Mod, Name, #{strict_arities := T})
+newrec(record, Mod, Name, T)
when T /= decode ->
RecName = Mod:name2rec(Name),
Sz = Mod:'#info-'(RecName, size),
@@ -859,16 +840,15 @@ newrec(Mod, Name) ->
%% reformat/5
-reformat(_, Map, Arities, _Mod, _Opts, list) ->
- [{F,V} || {F,_} <- Arities, #{F := V} <- [Map]];
+reformat(Name, Map, _Strict, Mod, list) ->
+ [{F,V} || {F,_} <- Mod:avp_arity(Name), #{F := V} <- [Map]];
-reformat(Name, Map, Arities, Mod, Opts, record_from_map) ->
- SA = maps:get(strict_arities, Opts, decode),
+reformat(Name, Map, Strict, Mod, record_from_map) ->
RecName = Mod:name2rec(Name),
- list_to_tuple([RecName | [maps:get(F, Map, def(A, SA))
- || {F,A} <- Arities]]);
+ list_to_tuple([RecName | [mget(F, Map, def(A, Strict))
+ || {F,A} <- Mod:avp_arity(Name)]]);
-reformat(_, Rec, _, _, _, _) ->
+reformat(_, Rec, _, _, _) ->
Rec.
%% def/2
diff --git a/lib/diameter/src/base/diameter_peer_fsm.erl b/lib/diameter/src/base/diameter_peer_fsm.erl
index c340c8b21a..9115630eb5 100644
--- a/lib/diameter/src/base/diameter_peer_fsm.erl
+++ b/lib/diameter/src/base/diameter_peer_fsm.erl
@@ -659,10 +659,6 @@ encode(Rec, Opts, Dict) ->
%% incoming/2
-incoming({recv = T, Name, Pkt}, #state{parent = Pid, ack = Ack} = S) ->
- Pid ! {T, self(), get_route(Ack, Name, Pkt), Name, Pkt},
- rcv(Name, Pkt, S);
-
incoming(#diameter_header{is_request = R}, #state{transport = TPid,
ack = Ack}) ->
R andalso Ack andalso send(TPid, false),
@@ -680,98 +676,97 @@ incoming(T, _) ->
%% recv/2
-recv(#diameter_packet{header = #diameter_header{} = Hdr}
- = Pkt,
- #state{dictionary = Dict0}
- = S) ->
- recv1(diameter_codec:msg_name(Dict0, Hdr), Pkt, S);
-
-recv(#diameter_packet{header = undefined,
- bin = Bin}
- = Pkt,
- S) ->
- recv(diameter_codec:decode_header(Bin), Pkt, S);
+recv(#diameter_packet{bin = Bin} = Pkt, S) ->
+ recv(Bin, Pkt, S);
recv(Bin, S) ->
- recv(#diameter_packet{bin = Bin}, S).
+ recv(Bin, Bin, S).
+
+%% recv/3
+
+recv(Bin, Msg, S) ->
+ recv(diameter_codec:decode_header(Bin), Bin, Msg, S).
+
+%% recv/4
-%% recv1/3
+recv(false, Bin, _, #state{length_errors = E}) ->
+ invalid(E, truncated_header, Bin),
+ Bin;
+
+recv(#diameter_header{length = Len} = H, Bin, Msg, #state{length_errors = E,
+ incoming_maxlen = M,
+ dictionary = Dict0}
+ = S)
+ when E == handle;
+ 0 == Len rem 4, bit_size(Bin) == 8*Len, size(Bin) =< M ->
+ recv1(diameter_codec:msg_name(Dict0, H), H, Msg, S);
-recv1(_,
- #diameter_packet{header = H, bin = Bin},
- #state{incoming_maxlen = M})
+recv(H, Bin, _, #state{incoming_maxlen = M})
when M < size(Bin) ->
invalid(false, incoming_maxlen_exceeded, {size(Bin), H}),
H;
+recv(H, Bin, _, #state{length_errors = E}) ->
+ T = {size(Bin), bit_size(Bin) rem 8, H},
+ invalid(E, message_length_mismatch, T),
+ H.
+
+%% recv1/4
+
%% Ignore anything but an expected CER/CEA if so configured. This is
%% non-standard behaviour.
-recv1(Name, #diameter_packet{header = H}, #state{state = {'Wait-CEA', _, _},
- strict = false})
+recv1(Name, H, _, #state{state = {'Wait-CEA', _, _},
+ strict = false})
when Name /= 'CEA' ->
H;
-recv1(Name, #diameter_packet{header = H}, #state{state = recv_CER,
- strict = false})
+recv1(Name, H, _, #state{state = recv_CER,
+ strict = false})
when Name /= 'CER' ->
H;
%% Incoming request after outgoing DPR: discard. Don't discard DPR, so
%% both ends don't do so when sending simultaneously.
-recv1(Name,
- #diameter_packet{header = #diameter_header{is_request = true} = H},
- #state{dpr = {_,_,_}})
+recv1(Name, #diameter_header{is_request = true} = H, _, #state{dpr = {_,_,_}})
when Name /= 'DPR' ->
invalid(false, recv_after_outgoing_dpr, H),
H;
%% Incoming request after incoming DPR: discard.
-recv1(_,
- #diameter_packet{header = #diameter_header{is_request = true} = H},
- #state{dpr = true}) ->
+recv1(_, #diameter_header{is_request = true} = H, _, #state{dpr = true}) ->
invalid(false, recv_after_incoming_dpr, H),
H;
%% DPA with identifier mismatch, or in response to a DPR initiated by
%% the service.
-recv1('DPA' = N,
- #diameter_packet{header = #diameter_header{hop_by_hop_id = Hid,
- end_to_end_id = Eid}}
- = Pkt,
- #state{dpr = {X,H,E}}
+recv1('DPA' = Name,
+ #diameter_header{hop_by_hop_id = Hid, end_to_end_id = Eid}
+ = H,
+ Msg,
+ #state{dpr = {X,HI,EI}}
= S)
- when H /= Hid;
- E /= Eid;
+ when HI /= Hid;
+ EI /= Eid;
not X ->
- rcv(N, Pkt, S);
+ Pkt = pkt(H, Msg),
+ handle(Name, Pkt, S);
-%% Any other message with a header and no length errors: send to the
-%% parent.
-recv1(Name, Pkt, #state{}) ->
- {recv, Name, Pkt}.
+%% Any other message with a header and no length errors.
+recv1(Name, H, Msg, #state{parent = Pid, ack = Ack} = S) ->
+ Pkt = pkt(H, Msg),
+ Pid ! {recv, self(), get_route(Ack, Name, Pkt), Name, Pkt},
+ handle(Name, Pkt, S).
-%% recv/3
+%% pkt/2
-recv(#diameter_header{length = Len}
- = H,
- #diameter_packet{bin = Bin}
- = Pkt,
- #state{length_errors = E}
- = S)
- when E == handle;
- 0 == Len rem 4, bit_size(Bin) == 8*Len ->
- recv(Pkt#diameter_packet{header = H}, S);
+pkt(H, Bin)
+ when is_binary(Bin) ->
+ #diameter_packet{header = H,
+ bin = Bin};
-recv(#diameter_header{}
- = H,
- #diameter_packet{bin = Bin},
- #state{length_errors = E}) ->
- T = {size(Bin), bit_size(Bin) rem 8, H},
- invalid(E, message_length_mismatch, T),
- Bin;
+pkt(H, Pkt) ->
+ Pkt#diameter_packet{header = H}.
-recv(false, #diameter_packet{bin = Bin}, #state{length_errors = E}) ->
- invalid(E, truncated_header, Bin),
- Bin.
+%% invalid/3
%% Note that counters here only count discarded messages.
invalid(E, Reason, T) ->
@@ -780,39 +775,39 @@ invalid(E, Reason, T) ->
?LOG(Reason, T),
ok.
-%% rcv/3
+%% handle/3
%% Incoming CEA.
-rcv('CEA' = N,
- #diameter_packet{header = #diameter_header{end_to_end_id = Eid,
- hop_by_hop_id = Hid}}
- = Pkt,
- #state{state = {'Wait-CEA', Hid, Eid}}
- = S) ->
+handle('CEA' = N,
+ #diameter_packet{header = #diameter_header{end_to_end_id = Eid,
+ hop_by_hop_id = Hid}}
+ = Pkt,
+ #state{state = {'Wait-CEA', Hid, Eid}}
+ = S) ->
?LOG(recv, N),
handle_CEA(Pkt, S);
%% Incoming CER
-rcv('CER' = N, Pkt, #state{state = recv_CER} = S) ->
+handle('CER' = N, Pkt, #state{state = recv_CER} = S) ->
handle_request(N, Pkt, S);
%% Anything but CER/CEA in a non-Open state is an error, as is
%% CER/CEA in anything but recv_CER/Wait-CEA.
-rcv(Name, _, #state{state = PS})
+handle(Name, _, #state{state = PS})
when PS /= 'Open';
Name == 'CER';
Name == 'CEA' ->
{stop, {Name, PS}};
-rcv('DPR' = N, Pkt, S) ->
+handle('DPR' = N, Pkt, S) ->
handle_request(N, Pkt, S);
%% DPA in response to DPR, with the expected identifiers.
-rcv('DPA' = N,
- #diameter_packet{header = #diameter_header{end_to_end_id = Eid,
- hop_by_hop_id = Hid}
- = H}
- = Pkt,
+handle('DPA' = N,
+ #diameter_packet{header = #diameter_header{end_to_end_id = Eid,
+ hop_by_hop_id = Hid}
+ = H}
+ = Pkt,
#state{dictionary = Dict0,
transport = TPid,
dpr = {X, Hid, Eid},
@@ -831,13 +826,13 @@ rcv('DPA' = N,
%% Ignore an unsolicited DPA in particular. Note that dpa_timeout
%% deals with the case in which the peer sends the wrong identifiers
%% in DPA.
-rcv('DPA' = N, #diameter_packet{header = H}, _) ->
+handle('DPA' = N, #diameter_packet{header = H}, _) ->
?LOG(ignored, N),
%% Note that these aren't counted in the normal recv counter.
diameter_stats:incr({diameter_codec:msg_id(H), recv, ignored}),
ok;
-rcv(_, _, _) ->
+handle(_, _, _) ->
ok.
%% incr/3
diff --git a/lib/diameter/src/base/diameter_service.erl b/lib/diameter/src/base/diameter_service.erl
index 3d3b25c8ad..208e2e8cb8 100644
--- a/lib/diameter/src/base/diameter_service.erl
+++ b/lib/diameter/src/base/diameter_service.erl
@@ -115,6 +115,7 @@
strict_arities => diameter:strict_arities(),
strict_mbit := boolean(),
decode_format := diameter:decode_format(),
+ traffic_counters := boolean(),
string_decode := boolean(),
spawn_opt := list() | {module(), atom(), list()}}}).
diff --git a/lib/diameter/src/base/diameter_traffic.erl b/lib/diameter/src/base/diameter_traffic.erl
index 3463a93568..27a41d6eb0 100644
--- a/lib/diameter/src/base/diameter_traffic.erl
+++ b/lib/diameter/src/base/diameter_traffic.erl
@@ -70,12 +70,13 @@
timeout = 5000 :: 0..16#FFFFFFFF, %% for outgoing requests
detach = false :: boolean()}).
-%% Term passed back to receive_message/6 with every incoming message.
+%% Term passed back to receive_message/5 with every incoming message.
-record(recvdata,
{peerT :: ets:tid(),
service_name :: diameter:service_name(),
apps :: [#diameter_app{}],
sequence :: diameter:sequence(),
+ counters :: boolean(),
codec :: #{decode_format := diameter:decode_format(),
string_decode := boolean(),
strict_arities => diameter:strict_arities(),
@@ -98,12 +99,13 @@
%% ---------------------------------------------------------------------------
make_recvdata([SvcName, PeerT, Apps, SvcOpts | _]) ->
- #{sequence := {_,_} = Mask, spawn_opt := Opts}
+ #{sequence := {_,_} = Mask, spawn_opt := Opts, traffic_counters := B}
= SvcOpts,
{Opts, #recvdata{service_name = SvcName,
peerT = PeerT,
apps = Apps,
sequence = Mask,
+ counters = B,
codec = maps:with([decode_format,
string_decode,
strict_arities,
@@ -186,7 +188,7 @@ incr_error(Dir, Id, TPid) ->
%% ---------------------------------------------------------------------------
-spec incr_rc(send|recv, Pkt, TPid, DictT)
- -> {Counter, non_neg_integer()}
+ -> Counter
| Reason
when Pkt :: #diameter_packet{},
TPid :: pid(),
@@ -197,18 +199,26 @@ incr_error(Dir, Id, TPid) ->
| {'Experimental-Result', integer(), integer()},
Reason :: atom().
-incr_rc(Dir, Pkt, TPid, {_, AppDict, _} = DictT) ->
- try
- incr_result(Dir, Pkt, TPid, DictT)
+incr_rc(Dir, Pkt, TPid, {MsgDict, AppDict, Dict0}) ->
+ incr_rc(Dir, Pkt, TPid, MsgDict, AppDict, Dict0);
+
+incr_rc(Dir, Pkt, TPid, Dict0) ->
+ incr_rc(Dir, Pkt, TPid, Dict0, Dict0, Dict0).
+
+%% incr_rc/6
+
+incr_rc(Dir, Pkt, TPid, MsgDict, AppDict, Dict0) ->
+ try get_result(Dir, MsgDict, Dict0, Pkt) of
+ false ->
+ unknown;
+ Avp ->
+ incr_result(Dir, Avp, Pkt, TPid, AppDict)
catch
exit: {E,_} when E == no_result_code;
E == invalid_error_bit ->
incr(TPid, {msg_id(Pkt#diameter_packet.header, AppDict), Dir, E}),
E
- end;
-
-incr_rc(Dir, Pkt, TPid, Dict0) ->
- incr_rc(Dir, Pkt, TPid, {Dict0, Dict0, Dict0}).
+ end.
%% ---------------------------------------------------------------------------
%% receive_message/5
@@ -220,13 +230,13 @@ incr_rc(Dir, Pkt, TPid, Dict0) ->
-> pid() %% request handler
| boolean() %% answer, known request or not
| discard %% request discarded by MFA
- when Route :: {Handler, RequestRef, Seqs}
+ when Route :: {Handler, RequestRef, TPid}
| Ack,
RecvData :: {[SpawnOpt], #recvdata{}},
SpawnOpt :: term(),
Handler :: pid(),
RequestRef :: reference(),
- Seqs :: {0..16#FFFFFFFF, 0..16#FFFFFFFF},
+ TPid :: pid(),
Ack :: boolean().
receive_message(TPid, Route, Pkt, Dict0, RecvData) ->
@@ -307,14 +317,15 @@ recv_request(Ack,
= Pkt,
Dict0,
#recvdata{peerT = PeerT,
- apps = Apps}
+ apps = Apps,
+ counters = Count}
= RecvData) ->
Ack andalso (TPid ! {handler, self()}),
case diameter_service:find_incoming_app(PeerT, TPid, Id, Apps) of
{#diameter_app{id = Aid, dictionary = AppDict} = App, Caps} ->
- incr(recv, Pkt, TPid, AppDict),
+ Count andalso incr(recv, Pkt, TPid, AppDict),
DecPkt = decode(Aid, AppDict, RecvData, Pkt),
- incr_error(recv, DecPkt, TPid, AppDict),
+ Count andalso incr_error(recv, DecPkt, TPid, AppDict),
send_A(recv_R(App, TPid, Dict0, Caps, RecvData, DecPkt),
TPid,
App,
@@ -327,9 +338,7 @@ recv_request(Ack,
%% 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]},
+ DecPkt = diameter_codec:collect_avps(Pkt),
send_answer(answer_message(RC, Dict0, Caps, DecPkt),
TPid,
Dict0,
@@ -345,14 +354,6 @@ recv_request(Ack,
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
- {_Error, Avps} ->
- Avps;
- Avps ->
- Avps
- end.
-
%% send_A/7
send_A([T | Fs], TPid, App, Dict0, RecvData, DecPkt, Caps) ->
@@ -545,6 +546,7 @@ send_A({call, Opts}, TPid, App, Dict0, RecvData, Pkt, Caps, Fs) ->
MsgDict,
AppDict,
Dict0,
+ RecvData#recvdata.counters,
Fs);
RC ->
send_answer(answer_message(RC, Dict0, Caps, Pkt),
@@ -588,14 +590,22 @@ send_answer(Ans, TPid, MsgDict, AppDict, Dict0, RecvData, DecPkt, Fs) ->
TPid,
RecvData#recvdata.codec,
make_answer_packet(Ans, DecPkt, MsgDict, Dict0)),
- send_answer(Pkt, TPid, MsgDict, AppDict, Dict0, Fs).
+ send_answer(Pkt,
+ TPid,
+ MsgDict,
+ AppDict,
+ Dict0,
+ RecvData#recvdata.counters,
+ Fs).
-%% send_answer/6
+%% send_answer/7
-send_answer(Pkt, TPid, MsgDict, AppDict, Dict0, [EvalPktFs | EvalFs]) ->
+send_answer(Pkt, TPid, MsgDict, AppDict, Dict0, Count, [EvalPktFs | EvalFs]) ->
eval_packet(Pkt, EvalPktFs),
- incr(send, Pkt, TPid, AppDict),
- incr_rc(send, Pkt, TPid, {MsgDict, AppDict, Dict0}), %% count outgoing
+ Count andalso begin
+ incr(send, Pkt, TPid, AppDict),
+ incr_rc(send, Pkt, TPid, MsgDict, AppDict, Dict0)
+ end,
send(TPid, z(Pkt), _Route = self()),
lists:foreach(fun diameter_lib:eval/1, EvalFs).
@@ -1120,48 +1130,31 @@ find_avp(Code, VId, [_ | Avps]) ->
%% Message sent as a header/avps list.
incr_result(send = Dir,
- #diameter_packet{msg = [#diameter_header{} = H | _]}
- = Pkt,
+ Avp,
+ #diameter_packet{msg = [#diameter_header{} = H | _]},
TPid,
- DictT) ->
- incr_res(Dir, Pkt#diameter_packet{header = H}, TPid, DictT);
-
-%% Outgoing message as binary: don't count. (Sending binaries is only
-%% partially supported.)
-incr_result(send, #diameter_packet{header = undefined = No}, _, _) ->
- No;
+ AppDict) ->
+ incr_result(Dir, Avp, H, [], TPid, AppDict);
%% Incoming or outgoing. Outgoing with encode errors never gets here
%% since encode fails.
-incr_result(Dir, Pkt, TPid, DictT) ->
- incr_res(Dir, Pkt, TPid, DictT).
-
-incr_res(Dir,
- #diameter_packet{header = #diameter_header{is_error = E}
- = Hdr,
- errors = Es}
- = Pkt,
- TPid,
- DictT) ->
- {MsgDict, AppDict, Dict0} = DictT,
+incr_result(Dir, Avp, Pkt, TPid, AppDict) ->
+ #diameter_packet{header = H, errors = Es}
+ = Pkt,
+ incr_result(Dir, Avp, H, Es, TPid, AppDict).
+
+%% incr_result/6
+incr_result(Dir, Avp, Hdr, Es, TPid, AppDict) ->
Id = msg_id(Hdr, AppDict),
%% Could be {relay, 0}, in which case the R-bit is redundant since
%% only answers are being counted. Let it be however, so that the
%% same tuple is in both send/recv and result code counters.
%% Count incoming decode errors.
- recv /= Dir orelse [] == Es orelse incr_error(Dir, Id, TPid, AppDict),
-
- %% Exit on a missing result code.
- T = rc_counter(MsgDict, Dir, Pkt),
- T == false andalso ?LOGX(no_result_code, {MsgDict, Dir, Hdr}),
- {Ctr, RC, Avp} = T,
-
- %% Or on an inappropriate value.
- is_result(RC, E, Dict0)
- orelse ?LOGX(invalid_error_bit, {MsgDict, Dir, Hdr, Avp}),
+ send == Dir orelse [] == Es orelse incr_error(Dir, Id, TPid, AppDict),
+ Ctr = rcc(Avp),
incr(TPid, {Id, Dir, Ctr}),
Ctr.
@@ -1206,7 +1199,50 @@ is_result(RC, true, _) ->
incr(TPid, Counter) ->
diameter_stats:incr(Counter, TPid, 1).
-%% rc_counter/3
+%% rcc/1
+
+rcc(#diameter_avp{name = 'Result-Code' = Name, value = V}) ->
+ {Name, head(V)};
+
+rcc(#diameter_avp{name = 'Experimental-Result', value = V}) ->
+ head(V).
+
+%% head/1
+
+head([V|_]) ->
+ V;
+head(V) ->
+ V.
+
+%% rcv/1
+
+rcv(#diameter_avp{name = N, value = V}) ->
+ rcv(N, head(V)).
+
+%% rcv/2
+
+rcv('Experimental-Result', {_,_,N}) ->
+ N;
+
+rcv('Result-Code', N) ->
+ N.
+
+%% get_result/4
+
+%% Message sent as binary: no checks or counting.
+get_result(_, _, _, #diameter_packet{header = undefined}) ->
+ false;
+
+get_result(Dir, MsgDict, Dict0, Pkt) ->
+ Avp = get_result(MsgDict, msg(Dir, Pkt)),
+ Hdr = Pkt#diameter_packet.header,
+ %% Exit on a missing result code or inappropriate value.
+ Avp == false
+ andalso ?LOGX(no_result_code, {MsgDict, Dir, Hdr}),
+ E = Hdr#diameter_header.is_error,
+ is_result(rcv(Avp), E, Dict0)
+ orelse ?LOGX(invalid_error_bit, {MsgDict, Dir, Hdr, Avp}),
+ Avp.
%% RFC 3588, 7.6:
%%
@@ -1214,46 +1250,29 @@ incr(TPid, Counter) ->
%% applications MUST include either one Result-Code AVP or one
%% Experimental-Result AVP.
-rc_counter(Dict, Dir, #diameter_packet{header = H,
- avps = As,
- msg = Msg})
+%% msg/2
+
+msg(Dir, #diameter_packet{header = H,
+ avps = As,
+ msg = Msg})
when Dir == recv; %% decoded incoming
Msg == undefined -> %% relayed outgoing
- rc_counter(Dict, [H|As]);
-
-rc_counter(Dict, _, #diameter_packet{msg = Msg}) ->
- rc_counter(Dict, Msg).
-
-rc_counter(Dict, Msg) ->
- rcc(get_result(Dict, Msg)).
-
-rcc(#diameter_avp{name = 'Result-Code' = Name, value = N} = A)
- when is_integer(N) ->
- {{Name, N}, N, A};
+ [H|As];
-rcc(#diameter_avp{name = 'Result-Code' = Name, value = [N|_]} = A)
- when is_integer(N) ->
- {{Name, N}, N, A};
-
-rcc(#diameter_avp{name = 'Experimental-Result', value = {_,_,N} = T} = A)
- when is_integer(N) ->
- {T, N, A};
-
-rcc(#diameter_avp{name = 'Experimental-Result', value = [{_,_,N} = T|_]} = A)
- when is_integer(N) ->
- {T, N, A};
-
-rcc(_) ->
- false.
+msg(_, #diameter_packet{msg = Msg}) ->
+ Msg.
%% get_result/2
get_result(Dict, Msg) ->
try
[throw(A) || N <- ['Result-Code', 'Experimental-Result'],
- #diameter_avp{} = A <- [get_avp(Dict, N, Msg)]]
+ #diameter_avp{} = A <- [get_avp(Dict, N, Msg)],
+ is_integer(catch rcv(A))],
+ false
catch
- #diameter_avp{} = A -> A
+ #diameter_avp{} = A ->
+ A
end.
x(T) ->
@@ -1377,7 +1396,7 @@ make_opts([T | _], _, _, _, _, _) ->
send_request({{TPid, _Caps} = TC, App}
= Transport,
- #{sequence := Mask}
+ #{sequence := Mask, traffic_counters := Count}
= SvcOpts,
Msg0,
CallOpts,
@@ -1393,9 +1412,15 @@ send_request({{TPid, _Caps} = TC, App}
SvcOpts,
ReqPkt),
eval_packet(EncPkt, Fs),
- T = send_R(ReqPkt, EncPkt, Transport, CallOpts, Caller, SvcName),
+ T = send_R(ReqPkt,
+ EncPkt,
+ Transport,
+ CallOpts,
+ Caller,
+ Count,
+ SvcName),
Ans = recv_answer(SvcName, App, CallOpts, T),
- handle_answer(SvcName, SvcOpts, App, Ans);
+ handle_answer(SvcName, Count, SvcOpts, App, Ans);
{discard, Reason} ->
{error, Reason};
discard ->
@@ -1538,6 +1563,7 @@ send_R(ReqPkt,
{{TPid, _Caps} = TC, #diameter_app{dictionary = AppDict}},
#options{timeout = Timeout},
{Pid, Ref},
+ Count,
SvcName) ->
Req = #request{ref = Ref,
caller = Pid,
@@ -1545,7 +1571,7 @@ send_R(ReqPkt,
peer = TC,
packet = ReqPkt},
- incr(send, EncPkt, TPid, AppDict),
+ Count andalso incr(send, EncPkt, TPid, AppDict),
{TRef, MRef} = zend_requezt(TPid, EncPkt, Req, SvcName, Timeout),
Pid ! Ref, %% tell caller a send has been attempted
{TRef, MRef, Req}.
@@ -1577,15 +1603,16 @@ failover(SvcName, App, Req, CallOpts) ->
CallOpts,
SvcName).
-%% handle_answer/4
+%% handle_answer/5
-handle_answer(SvcName, _, App, {error, Req, Reason}) ->
+handle_answer(SvcName, _, _, App, {error, Req, Reason}) ->
#request{packet = Pkt,
peer = {_TPid, _Caps} = TC}
= Req,
cb(App, handle_error, [Reason, msg(Pkt), SvcName, TC]);
handle_answer(SvcName,
+ Count,
SvcOpts,
#diameter_app{id = Id,
dictionary = AppDict,
@@ -1599,43 +1626,50 @@ handle_answer(SvcName,
#request{peer = {TPid, _}}
= Req,
- incr(recv, DecPkt, TPid, AppDict),
-
- AnsPkt = try
- incr_result(recv, DecPkt, TPid, {MsgDict, AppDict, Dict0})
- of
- _ -> DecPkt
- catch
- exit: {no_result_code, _} ->
- %% RFC 6733 requires one of Result-Code or
- %% Experimental-Result, but the decode will have
- %% detected a missing AVP. If both are optional in
- %% the dictionary then this isn't a decode error:
- %% just continue on.
- DecPkt;
- exit: {invalid_error_bit, {_, _, _, Avp}} ->
- #diameter_packet{errors = Es}
- = DecPkt,
- E = {5004, Avp},
- DecPkt#diameter_packet{errors = [E|Es]}
- end,
-
- handle_answer(AnsPkt, SvcName, App, AE, Req).
+ answer(answer(DecPkt, TPid, MsgDict, AppDict, Dict0, Count),
+ SvcName,
+ App,
+ AE,
+ Req).
+
+%% answer/6
+
+answer(DecPkt, TPid, MsgDict, AppDict, Dict0, Count) ->
+ Count andalso incr(recv, DecPkt, TPid, AppDict),
+ try get_result(recv, MsgDict, Dict0, DecPkt) of
+ Avp ->
+ Count andalso false /= Avp
+ andalso incr_result(recv, Avp, DecPkt, TPid, AppDict),
+ DecPkt
+ catch
+ exit: {no_result_code, _} ->
+ %% RFC 6733 requires one of Result-Code or
+ %% Experimental-Result, but the decode will have
+ %% detected a missing AVP. If both are optional in
+ %% the dictionary then this isn't a decode error:
+ %% just continue on.
+ DecPkt;
+ exit: {invalid_error_bit, {_, _, _, Avp}} ->
+ #diameter_packet{errors = Es}
+ = DecPkt,
+ E = {5004, Avp},
+ DecPkt#diameter_packet{errors = [E|Es]}
+ end.
-%% handle_answer/5
+%% answer/5
-handle_answer(#diameter_packet{errors = Es}
- = Pkt,
- SvcName,
- App,
- AE,
- #request{peer = {_TPid, _Caps} = TC,
- packet = P})
+answer(#diameter_packet{errors = Es}
+ = Pkt,
+ SvcName,
+ App,
+ AE,
+ #request{peer = {_TPid, _Caps} = TC,
+ packet = P})
when callback == AE;
[] == Es ->
cb(App, handle_answer, [Pkt, msg(P), SvcName, TC]);
-handle_answer(#diameter_packet{header = H}, SvcName, _, AE, _) ->
+answer(#diameter_packet{header = H}, SvcName, _, AE, _) ->
handle_error(H, SvcName, AE).
%% handle_error/3
@@ -1848,10 +1882,8 @@ get_destination(Dict, Msg) ->
[str(get_avp_value(Dict, D, Msg)) || D <- ['Destination-Realm',
'Destination-Host']].
-%% This is not entirely correct. The avp could have an arity 1, in
-%% which case an empty list is a DiameterIdentity of length 0 rather
-%% than the list of no values we treat it as by mapping to undefined.
-%% This behaviour is documented.
+%% A DiameterIdentity has length at least one, so an empty list is not
+%% a Realm/Host.
str([]) ->
undefined;
str(T) ->
@@ -1881,10 +1913,8 @@ get_avp(?RELAY, Name, Msg) ->
get_avp(Dict, Name, [#diameter_header{} | Avps]) ->
try
{Code, _, VId} = Dict:avp_header(Name),
- find_avp(Code, VId, Avps)
- of
- A ->
- (avp_decode(Dict, Name, ungroup(A)))#diameter_avp{name = Name}
+ A = find_avp(Code, VId, Avps),
+ (avp_decode(Dict, Name, ungroup(A)))#diameter_avp{name = Name}
catch
error: _ ->
undefined
@@ -1941,13 +1971,8 @@ avp_decode(Dict, Name, #diameter_avp{value = undefined,
data = Bin}
= Avp)
when is_binary(Bin) ->
- try Dict:avp(decode, Bin, Name, decode_opts(Dict)) of
- V ->
- Avp#diameter_avp{value = V}
- catch
- error:_ ->
- Avp
- end;
+ V = Dict:avp(decode, Bin, Name, decode_opts(Dict)),
+ Avp#diameter_avp{value = V};
avp_decode(_, _, #diameter_avp{} = Avp) ->
Avp.
diff --git a/lib/diameter/src/base/diameter_watchdog.erl b/lib/diameter/src/base/diameter_watchdog.erl
index 294325751e..b2172356ee 100644
--- a/lib/diameter/src/base/diameter_watchdog.erl
+++ b/lib/diameter/src/base/diameter_watchdog.erl
@@ -154,7 +154,7 @@ i({Ack, T, Pid, {Opts,
receive_data = RecvData,
dictionary = Dict0,
config =
- maps:without(CodecKeys,
+ maps:without([traffic_counters | CodecKeys],
config(SvcOpts#{restrict => restrict(Nodes),
suspect => 1,
okay => 3},