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+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2010-2011. 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%
+%%
+
+%%
+%% Types for function specifications, primarily in diameter.erl. This
+%% has nothing specifically to do with diameter_types.erl.
+%%
+
+-type evaluable()
+ :: {module(), atom(), list()}
+ | fun()
+ | nonempty_improper_list(evaluable(), list()). %% [evaluable() | Args]
+
+-type app_alias()
+ :: any().
+
+-type service_name()
+ :: any().
+
+%% Diameter basic types
+
+-type 'OctetString'() :: iolist().
+-type 'Integer32'() :: -2147483647..2147483647.
+-type 'Integer64'() :: -9223372036854775807..9223372036854775807.
+-type 'Unsigned32'() :: 0..4294967295.
+-type 'Unsigned64'() :: 0..18446744073709551615.
+-type 'Float32'() :: '-infinity' | float() | infinity.
+-type 'Float64'() :: '-infinity' | float() | infinity.
+-type 'Grouped'() :: list() | tuple().
+
+%% Diameter derived types
+
+-type 'Address'()
+ :: inet:ip_address()
+ | string().
+
+-type 'Time'() :: {{integer(), 1..12, 1..31},
+ {0..23, 0..59, 0..59}}.
+-type 'UTF8String'() :: iolist().
+-type 'DiameterIdentity'() :: 'OctetString'().
+-type 'DiameterURI'() :: 'OctetString'().
+-type 'Enumerated'() :: 'Integer32'().
+-type 'IPFilterRule'() :: 'OctetString'().
+-type 'QoSFilterRule'() :: 'OctetString'().
+
+%% Capabilities options/avps on start_service/2 and/or add_transport/2
+
+-type capability()
+ :: {'Origin-Host', 'DiameterIdentity'()}
+ | {'Origin-Realm', 'DiameterIdentity'()}
+ | {'Host-IP-Address', ['Address'()]}
+ | {'Vendor-Id', 'Unsigned32'()}
+ | {'Product-Name', 'UTF8String'()}
+ | {'Supported-Vendor-Id', ['Unsigned32'()]}
+ | {'Auth-Application-Id', ['Unsigned32'()]}
+ | {'Vendor-Specific-Application-Id', ['Grouped'()]}
+ | {'Firmware-Revision', 'Unsigned32'()}.
+
+%% Filters for call/4
+
+-type peer_filter()
+ :: none
+ | host
+ | realm
+ | {host, any|'DiameterIdentity'()}
+ | {realm, any|'DiameterIdentity'()}
+ | {eval, evaluable()}
+ | {neg, peer_filter()}
+ | {all, [peer_filter()]}
+ | {any, [peer_filter()]}.
+
+%% Options passed to start_service/2
+
+-type service_opt()
+ :: capability()
+ | {application, [application_opt()]}.
+
+-type application_opt()
+ :: {alias, app_alias()}
+ | {dictionary, module()}
+ | {module, app_module()}
+ | {state, any()}
+ | {call_mutates_state, boolean()}
+ | {answer_errors, callback|report|discard}.
+
+-type app_module()
+ :: module()
+ | nonempty_improper_list(module(), list()). %% list with module() head
+
+%% Identifier returned by add_transport/2
+
+-type transport_ref()
+ :: reference().
+
+%% Options passed to add_transport/2
+
+-type transport_opt()
+ :: {transport_module, atom()}
+ | {transport_config, any()}
+ | {applications, [app_alias()]}
+ | {capabilities, [capability()]}
+ | {watchdog_timer, 'Unsigned32'() | {module(), atom(), list()}}
+ | {reconnect_timer, 'Unsigned32'()}
+ | {private, any()}.
+
+%% Predicate passed to remove_transport/2
+
+-type transport_pred()
+ :: fun((reference(), connect|listen, list()) -> boolean())
+ | fun((reference(), list()) -> boolean())
+ | fun((list()) -> boolean())
+ | reference()
+ | list()
+ | {connect|listen, transport_pred()}
+ | {atom(), atom(), list()}.
+
+%% Options passed to call/4
+
+-type call_opt()
+ :: {extra, list()}
+ | {filter, peer_filter()}
+ | {timeout, 'Unsigned32'()}
+ | detach.