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-rw-r--r--lib/diameter/src/base/diameter_service.erl49
1 files changed, 30 insertions, 19 deletions
diff --git a/lib/diameter/src/base/diameter_service.erl b/lib/diameter/src/base/diameter_service.erl
index 0a0fd6ded1..467bb585cd 100644
--- a/lib/diameter/src/base/diameter_service.erl
+++ b/lib/diameter/src/base/diameter_service.erl
@@ -2175,15 +2175,13 @@ reply([Msg], Dict, TPid, Fs, Pkt)
reply(Msg, Dict, TPid, Fs, Pkt#diameter_packet{errors = []});
%% No errors or a diameter_header/avp list.
-reply(Msg, Dict, TPid, Fs, #diameter_packet{errors = Es,
- transport_data = TD}
- = ReqPkt)
+reply(Msg, Dict, TPid, Fs, #diameter_packet{errors = Es} = ReqPkt)
when [] == Es;
is_record(hd(Msg), diameter_header) ->
Pkt = diameter_codec:encode(Dict, make_answer_packet(Msg, ReqPkt)),
eval_packet(Pkt, Fs),
incr(send, Pkt, Dict, TPid), %% count result codes in sent answers
- send(TPid, Pkt#diameter_packet{transport_data = TD});
+ send(TPid, Pkt);
%% Or not: set Result-Code and Failed-AVP AVP's.
reply(Msg, Dict, TPid, Fs, #diameter_packet{errors = [H|_] = Es} = Pkt) ->
@@ -2198,23 +2196,36 @@ eval_packet(Pkt, Fs) ->
%% make_answer_packet/2
+%% A reply message clears the R and T flags and retains the P flag.
+%% The E flag will be set at encode. 6.2 of 3588 requires the same P
+%% flag on an answer as on the request. A #diameter_packet{} returned
+%% from a handle_request callback can circumvent this by setting its
+%% own header values.
+make_answer_packet(#diameter_packet{header = Hdr,
+ msg = Msg,
+ transport_data = TD},
+ #diameter_packet{header = ReqHdr}) ->
+ Hdr0 = ReqHdr#diameter_header{version = ?DIAMETER_VERSION,
+ is_request = false,
+ is_error = undefined,
+ is_retransmitted = false},
+ #diameter_packet{header = fold_record(Hdr0, Hdr),
+ msg = Msg,
+ transport_data = TD};
+
%% Binaries and header/avp lists are sent as-is.
-make_answer_packet(Bin, _)
+make_answer_packet(Bin, #diameter_packet{transport_data = TD})
when is_binary(Bin) ->
- #diameter_packet{bin = Bin};
-make_answer_packet([#diameter_header{} | _] = Msg, _) ->
- #diameter_packet{msg = Msg};
-
-%% Otherwise a reply message clears the R and T flags and retains the
-%% P flag. The E flag will be set at encode. 6.2 of 3588 requires the
-%% same P flag on an answer as on the request.
-make_answer_packet(Msg, #diameter_packet{header = ReqHdr}) ->
- Hdr = ReqHdr#diameter_header{version = ?DIAMETER_VERSION,
- is_request = false,
- is_error = undefined,
- is_retransmitted = false},
- #diameter_packet{header = Hdr,
- msg = Msg}.
+ #diameter_packet{bin = Bin,
+ transport_data = TD};
+make_answer_packet([#diameter_header{} | _] = Msg,
+ #diameter_packet{transport_data = TD}) ->
+ #diameter_packet{msg = Msg,
+ transport_data = TD};
+
+%% Otherwise, preserve transport_data.
+make_answer_packet(Msg, #diameter_packet{transport_data = TD} = Pkt) ->
+ make_answer_packet(#diameter_packet{msg = Msg, transport_data = TD}, Pkt).
%% rc/1