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-rw-r--r--lib/diameter/examples/code/node.erl29
1 files changed, 28 insertions, 1 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].