Created
January 18, 2011 06:44
-
-
Save onlyshk/784060 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
-module(server). | |
-behaviour(gen_server). | |
-export([start_link/0, stop/0]). | |
-export([init/1, handle_call/3, handle_cast/2, handle_info/2, | |
terminate/2, code_change/3]). | |
-export([accept/1]). | |
-export([receive_loop/1]). | |
-record(state, { | |
% listen socket | |
listener | |
}). | |
-define(SERVER, ?MODULE). | |
start_link() -> | |
gen_server:start_link({local, ?SERVER}, ?MODULE, [], []). | |
accept(Socket) -> | |
case gen_tcp:accept(Socket) of | |
{ok, Sock} -> | |
spawn(?MODULE, receive_loop, [Sock]), | |
accept(Socket); | |
{error, Reason} -> | |
Reason | |
end. | |
receive_loop(Socket) -> | |
case gen_tcp:recv(Socket, 0) of | |
{ok, Data} -> | |
case Data of | |
<<"q\r\n">> -> | |
gen_tcp:send(Socket, "quit \n"), | |
gen_tcp:close(Socket); | |
_ -> | |
receive_loop(Socket) | |
end; | |
{error, closed} -> | |
ok | |
end. | |
stop() -> | |
io:format("Server stop! \n "), | |
gen_server:cast(?MODULE, stop). | |
% | |
% Callback functions | |
% | |
init([]) -> | |
Port = 110, | |
Opts = [binary, {reuseaddr, true}, | |
{keepalive, false}, {ip,{0,0,0,0}}, {active, false}], | |
case gen_tcp:listen(Port, Opts) of | |
{ok, ListenSocket} -> | |
spawn(?MODULE, accept, [ListenSocket]), | |
{ok, #state{ listener = ListenSocket}}; | |
{error, Reason} -> | |
{stop, Reason} | |
end. | |
handle_call(_Request, _From, State) -> | |
Reply = ok, | |
{reply, Reply, State}. | |
handle_cast(stop, State) -> | |
{stop, normal, State}. | |
handle_info(_Info, State) -> | |
{noreply, State}. | |
% | |
% | |
% terminate server | |
% | |
terminate(_Reason, State) -> | |
gen_tcp:close(State#state.listener), | |
ok. | |
% | |
% Hot code change | |
% | |
code_change(_OldVsn, State, _Extra) -> | |
{ok, State}. | |
% |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment