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-rw-r--r--lib/diameter/src/base/diameter_traffic.erl18
1 files changed, 14 insertions, 4 deletions
diff --git a/lib/diameter/src/base/diameter_traffic.erl b/lib/diameter/src/base/diameter_traffic.erl
index 33062e928c..f3c4e63afc 100644
--- a/lib/diameter/src/base/diameter_traffic.erl
+++ b/lib/diameter/src/base/diameter_traffic.erl
@@ -1074,12 +1074,22 @@ incr_rc(Dir, Pkt, Dict, TPid, Dict0) ->
incr(TPid, {Id, Dir, Ctr}),
Ctr.
-%% Only count on known keeps so as not to be vulnerable to attack:
-%% there are 2^32 (application ids) * 2^24 (command codes) * 2 (R-bits)
-%% = 2^57 Ids for an attacker to choose from.
+%% Only count on known keys so as not to be vulnerable to attack:
+%% 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),
- choose('' == Dict:msg_name(Code, 0 == R), unknown, Id).
+ case Dict:msg_name(Code, 0 == R) of
+ '' ->
+ unknown(Dict:id(), R);
+ _ ->
+ Id
+ end.
+
+unknown(?APP_ID_RELAY, R) ->
+ {relay, R};
+unknown(_, _) ->
+ unknown.
%% No E-bit: can't be 3xxx.
is_result(RC, false, _Dict0) ->