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-rw-r--r--lib/diameter/src/base/diameter_traffic.erl18
1 files changed, 7 insertions, 11 deletions
diff --git a/lib/diameter/src/base/diameter_traffic.erl b/lib/diameter/src/base/diameter_traffic.erl
index 9a9f7a3197..ffd2c0afa2 100644
--- a/lib/diameter/src/base/diameter_traffic.erl
+++ b/lib/diameter/src/base/diameter_traffic.erl
@@ -1106,19 +1106,15 @@ msg_id(#diameter_packet{header = H}, Dict) ->
%% there are 2^32 (application ids) * 2^24 (command codes) = 2^56
%% pairs for an attacker to choose from.
msg_id(Hdr, Dict) ->
- {_ApplId, Code, R} = Id = diameter_codec:msg_id(Hdr),
- case Dict:msg_name(Code, 0 == R) of
- '' ->
- unknown(Dict:id(), R);
- _ ->
- Id
+ {Aid, Code, R} = Id = diameter_codec:msg_id(Hdr),
+ if Aid == ?APP_ID_RELAY ->
+ {relay, R};
+ true ->
+ choose(Aid /= Dict:id() orelse '' == Dict:msg_name(Code, 0 == R),
+ unknown,
+ Id)
end.
-unknown(?APP_ID_RELAY, R) ->
- {relay, R};
-unknown(_, _) ->
- unknown.
-
%% No E-bit: can't be 3xxx.
is_result(RC, false, _Dict0) ->
RC < 3000 orelse 4000 =< RC;