2
我建立了一个很幼稚的并行SSL受体。二郎SSL无阻塞平行受体
-module(multiserver).
-export([start/0,client/1]).
%% This is a dummy SSL Erlang server/client example
start() ->
spawn_link(fun() -> init([]) end).
init([]) ->
ssl:start(),
{ok, ListenSocket} = ssl:listen(9990, [{certfile, "cert.pem"}, {keyfile, "privkey.pem"} ,{reuseaddr, true},{active, true}, binary]),
Pid = self(),
spawn_link(fun() -> listener(ListenSocket, Pid, 1) end),
spawn_link(fun() -> listener(ListenSocket, Pid, 2) end),
loop().
loop() ->
receive
{new, _Pid} ->
%% Do stuff here
loop()
end.
listener(ListenSocket, Pid, Num) ->
{ok, ClientSocket} = ssl:transport_accept(ListenSocket),
ok = ssl:ssl_accept(ClientSocket),
io:format("listener ~p accepted ~n", [Num]),
ok = ssl:send(ClientSocket, "server"),
io:format("listener ~p sent~n", [Num]),
receive
X -> io:format("listener ~p: ~p ~n", [Num, X])
after 5000 ->
io:format("listener ~p timeout ~n", [Num]),
timeout
end,
ssl:close(ClientSocket),
listener(ListenSocket, Pid, Num).
client(Message) ->
ssl:start(),
{ok, Socket} = ssl:connect("localhost", 9990, [binary, {active,true}], infinity),
receive
X -> io:format("~p ~n", [X])
after 2000 ->
timeout
end,
ok = ssl:send(Socket, Message),
ssl:close(Socket),
io:format("client closed~n").
我有的问题是听众2似乎不能接收任何消息。该程序的运行示例如下:
1> multiserver:start().
<0.34.0>
然后我调用客户端/ 1三次从不同的外壳:
首先,我在外壳1 壳牌1启动服务器。 Shell 2:
2> multiserver:client("client").
{ssl,{sslsocket,new_ssl,<0.51.0>},<<"server">>}
client closed
ok
3> multiserver:client("client").
{ssl,{sslsocket,new_ssl,<0.54.0>},<<"server">>}
client closed
ok
4> multiserver:client("client").
{ssl,{sslsocket,new_ssl,<0.56.0>},<<"server">>}
client closed
ok
这是打印输出到服务器shell。 壳牌1:
listener 1 accepted
listener 1 sent
listener 1: {ssl,{sslsocket,new_ssl,<0.51.0>},<<"client">>}
listener 2 accepted
listener 2 sent
listener 1 accepted
listener 1 sent
listener 1: {ssl,{sslsocket,new_ssl,<0.54.0>},<<"client">>}
listener 2 timedout
2>
我花了一些时间与这一点,我无法理解为什么它是不可能的听众2接收任何数据。如果我编辑代码以使用gen_tcp,它按预期工作。 有什么我失踪? 可以用当前的ssl模块做到这一点吗?
看来,我运行到同样的问题...你有关于它的任何信息吗? – TheSquad 2012-04-10 09:35:52
不,解决方法是在不同的shell中运行客户端。但我想知道发生了什么,为什么使用SSL不可能,而gen_tcp没有问题。 – christofferp 2012-04-26 06:27:24