Server
-module(server).
-behaviour(gen_server).
%% API
-export([
start_link/0,
stop/0
]).
%% gen_server callbacks
-export([init/1, handle_call/3, handle_cast/2, handle_info/2,
terminate/2, code_change/3]).
-define(PORT, 1234).
-define(HOST, {127,0,0,1}).
-record(state, {port, sock, count=0}).
%%%===================================================================
%%% Maintenance API
%%%===================================================================
start_link([Port]) ->
gen_server:start_link({local, ?MODULE}, ?MODULE, [Port], []).
start_link() ->
start_link([?PORT]).
stop() ->
io:format("Stop"),
gen_server:cast(?MODULE, stop).
%%%===================================================================
%%% Services API
%%%===================================================================
%%%===================================================================
%%% gen_server callbacks
%%%===================================================================
init([Port]) ->
{ok, Listen} = gen_tcp:listen(Port, [binary, {active, true}]),
{ok, #state{port = Port, sock = Listen}, 0}.
handle_call(Msg, _Form, State) ->
io:format("~p~n",[Msg]),
{reply, State}.
handle_cast(stop, State) ->
{stop, normal, State}.
handle_info({tcp, Socket, RawData}, State) ->
Term = binary_to_term(RawData),
case Term of
stop ->
gen_tcp:send(Socket, <<"Stop">>),
stop();
_ ->
io:format("~p~n", [Term]),
gen_tcp:send(Socket, <<"Success">>)
end,
{noreply, State};
handle_info(timeout, State) ->
io:format("timeout"),
{ok, _Sock} = gen_tcp:accept(State#state.sock),
{noreply, State}.
terminate(_Reason, _State) ->
ok.
code_change(_OldVsn, State, _Extra) ->
{ok, State}.
Client
-module(server).
-behaviour(gen_server).
%% API
-export([
start_link/0,
stop/0
]).
%% gen_server callbacks
-export([init/1, handle_call/3, handle_cast/2, handle_info/2,
terminate/2, code_change/3]).
-define(PORT, 1234).
-define(HOST, {127,0,0,1}).
-record(state, {port, sock, count=0}).
%%%===================================================================
%%% Maintenance API
%%%===================================================================
start_link([Port]) ->
gen_server:start_link({local, ?MODULE}, ?MODULE, [Port], []).
start_link() ->
start_link([?PORT]).
stop() ->
io:format("Stop"),
gen_server:cast(?MODULE, stop).
%%%===================================================================
%%% Services API
%%%===================================================================
%%%===================================================================
%%% gen_server callbacks
%%%===================================================================
init([Port]) ->
{ok, Listen} = gen_tcp:listen(Port, [binary, {active, true}]),
{ok, #state{port = Port, sock = Listen}, 0}.
handle_call(Msg, _Form, State) ->
io:format("~p~n",[Msg]),
{reply, State}.
handle_cast(stop, State) ->
{stop, normal, State}.
handle_info({tcp, Socket, RawData}, State) ->
Term = binary_to_term(RawData),
case Term of
stop ->
gen_tcp:send(Socket, <<"Stop">>),
stop();
_ ->
io:format("~p~n", [Term]),
gen_tcp:send(Socket, <<"Success">>)
end,
{noreply, State};
handle_info(timeout, State) ->
io:format("timeout"),
{ok, _Sock} = gen_tcp:accept(State#state.sock),
{noreply, State}.
terminate(_Reason, _State) ->
ok.
code_change(_OldVsn, State, _Extra) ->
{ok, State}.
