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%%% Copyright 2010 © ProcessOne
%%% Author : Eric Cestari <>
%%% This program is free software; you can redistribute it and/or modify
%%% it under the terms of the GNU General Public License as published by
%%% the Free Software Foundation; either version 2 of the License, or
%%% (at your option) any later version.
%%% This program is distributed in the hope that it will be useful,
%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
%%% GNU General Public License for more details.
%%% You should have received a copy of the GNU General Public License
%%% along with this program; if not, write to the Free Software
%%% Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
%%% In addition, as a special exception, you have the permission to
%%% link the code of this program with any library released under
%%% the EPL license and distribute linked combinations including
%%% the two; the MPL (Mozilla Public License), which EPL (Erlang
%%% Public License) is based on, is included in this exception.
-export([ connect/4, send/3, close/1, set_opts/2, protocol_options/1, normalize_incomming_data/2 ]).
protocol_options(Proto=#proto_opts{ip_transparent = true }) ->
Opts= [{raw,0,19,<<1:32/native>>} ] ++ protocol_options(Proto#proto_opts{ip_transparent=false}),
?DebugF("TCP Real opts: ~p ~n", [Opts]),
protocol_options(#proto_opts{tcp_rcv_size = Rcv, tcp_snd_size = Snd,
tcp_reuseaddr = Reuseaddr}) ->
{active, once},
{reuseaddr, Reuseaddr},
{recbuf, Rcv},
{sndbuf, Snd},
{keepalive, true} %% FIXME: should be an option
%% -> {ok, Socket}
connect(Host, Port, Opts, ConnectTimeout) ->
gen_tcp:connect(Host, Port, opts_to_tcp_opts(Opts), ConnectTimeout).
opts_to_tcp_opts(Opts) -> Opts.
%% send/3 -> ok | {error, Reason}
send(Socket, Data, _Opts) ->
gen_tcp:send(Socket, Data).
close(none) -> ok;
close(Socket) ->
% set_opts/2 -> socket()
set_opts(none, _Opts) -> none;
set_opts(Socket, Opts) ->
inet:setopts(Socket, Opts),
normalize_incomming_data(Socket, {tcp, Socket, Data}) ->
{gen_ts_transport, Socket, Data};
normalize_incomming_data(Socket, {tcp_closed, Socket}) ->
{gen_ts_transport, Socket, closed};
normalize_incomming_data(Socket, {tcp_error, Socket, Error}) ->
{gen_ts_transport, Socket, error, Error};
normalize_incomming_data(_Socket, X) ->
X. %%Other, non gen_tcp packet.
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