%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1997-2011. 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(inet_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([family/0, mask/2, parse_address/1]).
-export([getserv/1, getaddr/1, getaddr/2, getaddrs/1, getaddrs/2]).
-include("inet_int.hrl").
%% my address family
family() -> inet.
%% Apply netmask on address
mask({M1,M2,M3,M4}, {IP1,IP2,IP3,IP4}) ->
{M1 band IP1,
M2 band IP2,
M3 band IP3,
M4 band IP4}.
%% Parse address string
parse_address(Host) ->
inet_parse:ipv4strict_address(Host).
%% inet_tcp port lookup
getserv(Port) when is_integer(Port) -> {ok, Port};
getserv(Name) when is_atom(Name) -> inet:getservbyname(Name,tcp).
%% inet_tcp address lookup
getaddr(Address) -> inet:getaddr(Address, inet).
getaddr(Address,Timer) -> inet:getaddr_tm(Address, inet, Timer).
%% inet_tcp address lookup
getaddrs(Address) -> inet:getaddrs(Address, inet).
getaddrs(Address,Timer) -> inet:getaddrs_tm(Address,inet,Timer).
%%
%% 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
%%
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({A,B,C,D}, Port, Opts, Time) when ?ip(A,B,C,D), ?port(Port) ->
case inet:connect_options(Opts, inet) of
{error, Reason} -> exit(Reason);
{ok, #connect_opts{fd=Fd,
ifaddr=BAddr={Ab,Bb,Cb,Db},
port=BPort,
opts=SockOpts}}
when ?ip(Ab,Bb,Cb,Db), ?port(BPort) ->
case inet:open(Fd,BAddr,BPort,SockOpts,tcp,inet,stream,?MODULE) of
{ok, S} ->
case prim_inet:connect(S, {A,B,C,D}, Port, Time) of
ok -> {ok,S};
Error -> prim_inet:close(S), Error
end;
Error -> Error
end;
{ok, _} -> exit(badarg)
end.
%%
%% Listen
%%
listen(Port, Opts) ->
case inet:listen_options([{port,Port} | Opts], inet) of
{error,Reason} -> exit(Reason);
{ok, #listen_opts{fd=Fd,
ifaddr=BAddr={A,B,C,D},
port=BPort,
opts=SockOpts}=R}
when ?ip(A,B,C,D), ?port(BPort) ->
case inet:open(Fd,BAddr,BPort,SockOpts,tcp,inet,stream,?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:fdopen(Fd, Opts, tcp, inet, stream, ?MODULE).
