%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2010-2012. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved online at http://www.erlang.org/.
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and limitations
%% under the License.
%%
%% %CopyrightEnd%
%%
-module(client_cb).
-include_lib("diameter/include/diameter.hrl").
-include_lib("diameter/include/diameter_gen_base_rfc3588.hrl").
%% diameter callbacks
-export([peer_up/3,
peer_down/3,
pick_peer/4,
prepare_request/3,
prepare_retransmit/3,
handle_answer/4,
handle_error/4,
handle_request/3]).
%% peer_up/3
peer_up(_SvcName, _Peer, State) ->
State.
%% peer_down/3
peer_down(_SvcName, _Peer, State) ->
State.
%% pick_peer/4
pick_peer([Peer | _], _, _SvcName, _State) ->
{ok, Peer}.
%% prepare_request/3
prepare_request(#diameter_packet{msg = ['RAR' = T | Avps]}, _, {_, Caps}) ->
#diameter_caps{origin_host = {OH, DH},
origin_realm = {OR, DR}}
= Caps,
{send, [T, {'Origin-Host', OH},
{'Origin-Realm', OR},
{'Destination-Host', DH},
{'Destination-Realm', DR}
| Avps]};
prepare_request(#diameter_packet{msg = Rec}, _, {_, Caps}) ->
#diameter_caps{origin_host = {OH, DH},
origin_realm = {OR, DR}}
= Caps,
{send, Rec#diameter_base_RAR{'Origin-Host' = OH,
'Origin-Realm' = OR,
'Destination-Host' = DH,
'Destination-Realm' = DR}}.
%% prepare_retransmit/3
prepare_retransmit(Packet, SvcName, Peer) ->
prepare_request(Packet, SvcName, Peer).
%% handle_answer/4
%% Since client.erl has detached the call when using the list
%% encoding and not otherwise, output to the terminal in the
%% the former case, return in the latter.
handle_answer(#diameter_packet{msg = Msg}, Request, _SvcName, _Peer)
when is_list(Request) ->
io:format("answer: ~p~n", [Msg]);
handle_answer(#diameter_packet{msg = Msg}, _Request, _SvcName, _Peer) ->
{ok, Msg}.
%% handle_error/4
handle_error(Reason, Request, _SvcName, _Peer)
when is_list(Request) ->
io:format("error: ~p~n", [Reason]);
handle_error(Reason, _Request, _SvcName, _Peer) ->
{error, Reason}.
%% handle_request/3
handle_request(_Packet, _SvcName, _Peer) ->
erlang:error({unexpected, ?MODULE, ?LINE}).
