%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1997-2016. 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.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
-module(local_tcp).
%% Socket server for TCP/IP
-export([connect/3, connect/4, listen/2, accept/1, accept/2, close/1]).
-export([send/2, send/3, recv/2, recv/3, unrecv/2]).
-export([shutdown/2]).
-export([controlling_process/2]).
-export([fdopen/2]).
-export([getserv/1, getaddr/1, getaddr/2, getaddrs/1, getaddrs/2]).
-export([translate_ip/1]).
-include("inet_int.hrl").
-define(FAMILY, local).
-define(PROTO, tcp).
-define(TYPE, stream).
%% port lookup
getserv(0) -> {ok, 0}.
%% no address lookup
getaddr({?FAMILY, _} = Address) -> {ok, Address}.
getaddr({?FAMILY, _} = Address, _Timer) -> {ok, Address}.
%% no address lookup
getaddrs({?FAMILY, _} = Address) -> {ok, [Address]}.
getaddrs({?FAMILY, _} = Address, _Timer) -> {ok, [Address]}.
%% special this side addresses
translate_ip(IP) -> IP.
%%
%% Send data on a socket
%%
send(Socket, Packet, Opts) -> prim_inet:send(Socket, Packet, Opts).
send(Socket, Packet) -> prim_inet:send(Socket, Packet, []).
%%
%% Receive data from a socket (inactive only)
%%
recv(Socket, Length) -> prim_inet:recv(Socket, Length).
recv(Socket, Length, Timeout) -> prim_inet:recv(Socket, Length, Timeout).
unrecv(Socket, Data) -> prim_inet:unrecv(Socket, Data).
%%
%% Shutdown one end of a socket
%%
shutdown(Socket, How) ->
prim_inet:shutdown(Socket, How).
%%
%% Close a socket (async)
%%
close(Socket) ->
inet:tcp_close(Socket).
%%
%% Set controlling process
%% FIXME: move messages to new owner!!!
%%
controlling_process(Socket, NewOwner) ->
inet:tcp_controlling_process(Socket, NewOwner).
%%
%% Connect
%%
connect(Address, Port, Opts) ->
do_connect(Address, Port, Opts, infinity).
%%
connect(Address, Port, Opts, infinity) ->
do_connect(Address, Port, Opts, infinity);
connect(Address, Port, Opts, Timeout)
when is_integer(Timeout), Timeout >= 0 ->
do_connect(Address, Port, Opts, Timeout).
do_connect(Addr = {?FAMILY, _}, 0, Opts, Time) ->
case inet:connect_options(Opts, ?MODULE) of
{error, Reason} -> exit(Reason);
{ok,
#connect_opts{
fd = Fd,
ifaddr = BAddr,
port = 0,
opts = SockOpts}}
when tuple_size(BAddr) =:= 2, element(1, BAddr) =:= ?FAMILY;
BAddr =:= any ->
case inet:open(
Fd,
case BAddr of
any ->
undefined;
_ ->
BAddr
end,
0, SockOpts, ?PROTO, ?FAMILY, ?TYPE, ?MODULE) of
{ok, S} ->
case prim_inet:connect(S, Addr, 0, Time) of
ok -> {ok,S};
Error -> prim_inet:close(S), Error
end;
Error -> Error
end;
{ok, _} -> exit(badarg)
end.
%%
%% Listen
%%
listen(0, Opts) ->
case inet:listen_options([{port,0} | Opts], ?MODULE) of
{error, Reason} -> exit(Reason);
{ok,
#listen_opts{
fd = Fd,
ifaddr = BAddr,
port = 0,
opts = SockOpts} = R}
when tuple_size(BAddr) =:= 2, element(1, BAddr) =:= ?FAMILY;
BAddr =:= any ->
case inet:open(
Fd, BAddr, 0, SockOpts,
?PROTO, ?FAMILY, ?TYPE, ?MODULE) of
{ok, S} ->
case prim_inet:listen(S, R#listen_opts.backlog) of
ok -> {ok, S};
Error -> prim_inet:close(S), Error
end;
Error -> Error
end;
{ok, _} -> exit(badarg)
end.
%%
%% Accept
%%
accept(L) ->
case prim_inet:accept(L) of
{ok, S} ->
inet_db:register_socket(S, ?MODULE),
{ok,S};
Error -> Error
end.
%%
accept(L, Timeout) ->
case prim_inet:accept(L, Timeout) of
{ok, S} ->
inet_db:register_socket(S, ?MODULE),
{ok,S};
Error -> Error
end.
%%
%% Create a port/socket from a file descriptor
%%
fdopen(Fd, Opts) ->
inet:open(Fd, undefined, 0, Opts, ?PROTO, ?FAMILY, ?TYPE, ?MODULE).
