Я получил одну ошибку при запуске моего сервера gen, я хочу знать, как его отладить, спасибо!
Я запускаю "пример: add_listener (self ()," 127.0.0.1 ", 10999)."после start_link.
Ошибка:
=ERROR REPORT==== 11-May-2011::13:41:57 ===
** Generic server <0.37.0> terminating
** Last message in was {'EXIT',<0.35.0>,
{{timeout,
{gen_server,call,
[<0.35.0>,
{add_listener,"127.0.0.1",10999}]}},
[{gen_server,call,2},
{erl_eval,do_apply,5},
{shell,exprs,6},
{shell,eval_exprs,6},
{shell,eval_loop,3}]}}
** When Server state == {state,example,
{dict,0,16,16,8,80,48,
{[],[],[],[],[],[],[],[],[],[],[],[],[],
[],[],[]},
{{[],[],[],[],[],[],[],[],[],[],[],[],[],
[],[],[]}}},
{dict,0,16,16,8,80,48,
{[],[],[],[],[],[],[],[],[],[],[],[],[],
[],[],[]},
{{[],[],[],[],[],[],[],[],[],[],[],[],[],
[],[],[]}}},
[]}
** Reason for termination ==
** {{timeout,{gen_server,call,[<0.35.0>,{add_listener,"127.0.0.1",10999}]}},
[{gen_server,call,2},
{erl_eval,do_apply,5},
{shell,exprs,6},
{shell,eval_exprs,6},
{shell,eval_loop,3}]}
** exception exit: {timeout,{gen_server,call,
[<0.35.0>,{add_listener,"127.0.0.1",10999}]}}
in function gen_server:call/2
Мой код:
-module(test_ess_tcp).
-export([start_link/0,
add_listener/3,
remove_listener/3]).
-export([init/2, handle_call/3, handle_cast/2, handle_info/2]).
-export([terminate/2, sock_opts/0, new_connection/4]).
-behavior(ess_tcp).
start_link() ->
ess_tcp:start_link(?MODULE, []).
add_listener(Pid, IpAddr, Port) ->
gen_server:call(Pid, {add_listener, IpAddr, Port}).
remove_listener(Pid, IpAddr, Port) ->
gen_server:call(Pid, {remove_listener, IpAddr, Port}).
init([], State) ->
%% Example storing callback module specific state
%% This modifies the server state
{ok, ess_tcp:store_cb_state([], State)}.
handle_call({add_listener, IpAddr, Port}, _From, State) ->
%% Example of getting callback module state
io:format("Not used here, but just an example"),
[] = ess_tcp:get_cb_state(State),
case ess_tcp:add_listen_socket({IpAddr, Port}, State) of
{ok, State1} ->
{reply, ok, State1};
Error ->
{reply, Error, State}
end;
handle_call({remove_listener, IpAddr, Port}, _From, State) ->
case ess_tcp:remove_listen_socket({IpAddr, Port}, State) of
{ok, State1} ->
{reply, ok, State1};
Error ->
{reply, Error, State}
end;
handle_call(_Msg, _From, State) ->
{reply, ignored, State}.
handle_cast(_Msg, State) ->
{noreply, State}.
handle_info({tcp, Sock, Data}, State) ->
Me = self(),
P = spawn(fun() -> worker(Me, Sock, Data) end),
gen_tcp:controlling_process(Sock, P),
{noreply, State};
handle_info(_Msg, State) ->
{noreply, State}.
terminate(_Reason, _State) ->
ok.
sock_opts() ->
[binary, {active, once}, {packet, 0}].
new_connection(_IpAddr, _Port, Sock, State) ->
Me = self(),
P = spawn(fun() -> worker(Me, Sock) end),
gen_tcp:controlling_process(Sock, P),
{ok, State}.
worker(Owner, Sock) ->
gen_tcp:send(Sock, "Hello\n"),
inet:setopts(Sock, [{active, once}]),
gen_tcp:controlling_process(Sock, Owner).
worker(Owner, Sock, Data) ->
gen_tcp:send(Sock, Data),
inet:setopts(Sock, [{active, once}]),
gen_tcp:controlling_process(Sock, Owner).