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Diffstat (limited to 'lib/kernel/src/local_tcp.erl')
| -rw-r--r-- | lib/kernel/src/local_tcp.erl | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/lib/kernel/src/local_tcp.erl b/lib/kernel/src/local_tcp.erl new file mode 100644 index 0000000000..90e0fa2162 --- /dev/null +++ b/lib/kernel/src/local_tcp.erl @@ -0,0 +1,178 @@ +%% +%% %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). |