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authorAnders Svensson <[email protected]>2017-08-09 15:20:36 +0200
committerAnders Svensson <[email protected]>2017-08-09 15:20:36 +0200
commit0c4a4aa70c5bceb9c38ddc939cfa66f16e943550 (patch)
treece8eaaadb8a4c06130f13a72b40fb20b2a6409c3
parent7c8213e3a2da91eca40ae8fcbadae07dcbb9f4c8 (diff)
parentcfb3eeaf354d99d0e62e6cf939b1320c4bdb0840 (diff)
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Merge branch 'anders/diameter/message_cb/OTP-14486' into maint
* anders/diameter/message_cb/OTP-14486: Add simple message_cb to example server Fix inappropriate message callbacks
-rw-r--r--lib/diameter/examples/code/node.erl29
-rw-r--r--lib/diameter/src/base/diameter_peer_fsm.erl20
2 files changed, 41 insertions, 8 deletions
diff --git a/lib/diameter/examples/code/node.erl b/lib/diameter/examples/code/node.erl
index 246be4194b..fc5830f8e2 100644
--- a/lib/diameter/examples/code/node.erl
+++ b/lib/diameter/examples/code/node.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2010-2015. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2016. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
@@ -30,6 +30,8 @@
connect/2,
stop/1]).
+-export([message/3]).
+
-type protocol()
:: tcp | sctp.
@@ -128,6 +130,8 @@ stop(Name) ->
server_opts({T, Addr, Port}) ->
[{transport_module, tmod(T)},
{transport_config, [{reuseaddr, true},
+ {sender, true},
+ {message_cb, [fun ?MODULE:message/3, 0]},
{ip, addr(Addr)},
{port, Port}]}];
@@ -173,3 +177,26 @@ addr(loopback) ->
{127,0,0,1};
addr(A) ->
A.
+
+%% ---------------------------------------------------------------------------
+
+%% message/3
+%%
+%% Simple message callback that limits the number of concurrent
+%% requests on the peer connection in question.
+
+%% Incoming request.
+message(recv, <<_:32, 1:1, _/bits>> = Bin, N) ->
+ [Bin, N < 32, fun ?MODULE:message/3, N+1];
+
+%% Outgoing request.
+message(ack, <<_:32, 1:1, _/bits>>, _) ->
+ [];
+
+%% Incoming answer or request discarded.
+message(ack, _, N) ->
+ [N =< 32, fun ?MODULE:message/3, N-1];
+
+%% Outgoing message or incoming answer.
+message(_, Bin, _) ->
+ [Bin].
diff --git a/lib/diameter/src/base/diameter_peer_fsm.erl b/lib/diameter/src/base/diameter_peer_fsm.erl
index 1b0dc417e5..e43b3f54cf 100644
--- a/lib/diameter/src/base/diameter_peer_fsm.erl
+++ b/lib/diameter/src/base/diameter_peer_fsm.erl
@@ -542,11 +542,11 @@ put_route(Pid) ->
MRef = monitor(process, Pid),
put(Pid, MRef).
-%% get_route/2
+%% get_route/3
-%% incoming answer
-get_route(_, #diameter_packet{header = #diameter_header{is_request = false}}
- = Pkt) ->
+%% Incoming answer.
+get_route(_, _, #diameter_packet{header = #diameter_header{is_request = false}}
+ = Pkt) ->
Seqs = diameter_codec:sequence_numbers(Pkt),
case erase(Seqs) of
{Pid, Ref, MRef} ->
@@ -557,8 +557,14 @@ get_route(_, #diameter_packet{header = #diameter_header{is_request = false}}
false
end;
-%% incoming request
-get_route(Ack, _) ->
+%% Requests answered here ...
+get_route(_, N, _)
+ when N == 'CER';
+ N == 'DPR' ->
+ false;
+
+%% ... or not.
+get_route(Ack, _, _) ->
Ack.
%% erase_route/1
@@ -650,7 +656,7 @@ encode(Rec, Opts, Dict) ->
%% incoming/2
incoming({recv = T, Name, Pkt}, #state{parent = Pid, ack = Ack} = S) ->
- Pid ! {T, self(), get_route(Ack, Pkt), Name, Pkt},
+ Pid ! {T, self(), get_route(Ack, Name, Pkt), Name, Pkt},
rcv(Name, Pkt, S);
incoming(#diameter_header{is_request = R}, #state{transport = TPid,