1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2010-2015. 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%
%%
%%
%% A library module used by the example Diameter nodes. Does little
%% more than provide an alternate/simplified transport configuration.
%%
-module(node).
-export([start/2,
listen/2,
connect/2,
stop/1]).
-type protocol()
:: tcp | sctp.
-type ip_address()
:: default
| inet:ip_address().
-type server_transport()
:: protocol()
| {protocol(), ip_address(), non_neg_integer()}.
-type server_opts()
:: server_transport()
| {server_transport(), [diameter:transport_opt()]}
| [diameter:transport_opt()].
-type client_transport()
:: protocol() | any
| {protocol() | any, ip_address(), non_neg_integer()}
| {protocol() | any, ip_address(), ip_address(), non_neg_integer()}.
-type client_opts()
:: client_transport()
| {client_transport(), [diameter:transport_opt()]}
| [diameter:transport_opt()].
%% The server_transport() and client_transport() config is just
%% convenience: arbitrary options can be specifed as a
%% [diameter:transport_opt()].
-define(DEFAULT_PORT, 3868).
%% ---------------------------------------------------------------------------
%% Interface functions
%% ---------------------------------------------------------------------------
%% start/2
-spec start(diameter:service_name(), [diameter:service_opt()])
-> ok
| {error, term()}.
start(Name, Opts)
when is_atom(Name), is_list(Opts) ->
diameter:start_service(Name, Opts).
%% connect/2
-spec connect(diameter:service_name(), client_opts())
-> {ok, diameter:transport_ref()}
| {error, term()}.
connect(Name, Opts)
when is_list(Opts) ->
diameter:add_transport(Name, {connect, Opts});
connect(Name, {T, Opts}) ->
connect(Name, Opts ++ client_opts(T));
connect(Name, T) ->
connect(Name, [{connect_timer, 5000} | client_opts(T)]).
%% listen/2
-spec listen(diameter:service_name(), server_opts())
-> {ok, diameter:transport_ref()}
| {error, term()}.
listen(Name, Opts)
when is_list(Opts) ->
diameter:add_transport(Name, {listen, Opts});
listen(Name, {T, Opts}) ->
listen(Name, Opts ++ server_opts(T));
listen(Name, T) ->
listen(Name, server_opts(T)).
%% stop/1
-spec stop(diameter:service_name())
-> ok
| {error, term()}.
stop(Name) ->
diameter:stop_service(Name).
%% ---------------------------------------------------------------------------
%% Internal functions
%% ---------------------------------------------------------------------------
%% server_opts/1
%%
%% Return transport options for a listening transport.
server_opts({T, Addr, Port}) ->
[{transport_module, tmod(T)},
{transport_config, [{reuseaddr, true},
{ip, addr(Addr)},
{port, Port}]}];
server_opts(T) ->
server_opts({T, loopback, ?DEFAULT_PORT}).
%% client_opts/1
%%
%% Return transport options for a connecting transport.
client_opts({T, LA, RA, RP})
when T == all; %% backwards compatibility
T == any ->
[[S, {C,Os}], T] = [client_opts({P, LA, RA, RP}) || P <- [sctp,tcp]],
[S, {C,Os,2000} | T];
client_opts({T, LA, RA, RP}) ->
[{transport_module, tmod(T)},
{transport_config, [{raddr, addr(RA)},
{rport, RP},
{reuseaddr, true}
| ip(LA)]}];
client_opts({T, RA, RP}) ->
client_opts({T, default, RA, RP});
client_opts(T) ->
client_opts({T, loopback, loopback, ?DEFAULT_PORT}).
%% ---------------------------------------------------------------------------
tmod(tcp) -> diameter_tcp;
tmod(sctp) -> diameter_sctp.
ip(default) ->
[];
ip(loopback) ->
[{ip, {127,0,0,1}}];
ip(Addr) ->
[{ip, Addr}].
addr(loopback) ->
{127,0,0,1};
addr(A) ->
A.
|
