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-rw-r--r--lib/common_test/test/telnet_server.erl85
1 files changed, 58 insertions, 27 deletions
diff --git a/lib/common_test/test/telnet_server.erl b/lib/common_test/test/telnet_server.erl
index eb90f18320..3b0c3cbcb5 100644
--- a/lib/common_test/test/telnet_server.erl
+++ b/lib/common_test/test/telnet_server.erl
@@ -51,32 +51,51 @@ stop(Pid) ->
init(Opts) ->
Port = proplists:get_value(port,Opts),
Users = proplists:get_value(users,Opts,[]),
- {ok, LSock} = gen_tcp:listen(Port, [list, {packet, 0},
- {active, true}]),
+ {ok, LSock} = listen(5, Port, [list, {packet, 0},
+ {active, true},
+ {reuseaddr,true}]),
State = #state{listen=LSock,users=Users},
accept(State),
- ok = gen_tcp:close(LSock).
+ ok = gen_tcp:close(LSock),
+ dbg("telnet_server closed the listen socket ~p\n", [LSock]),
+ timer:sleep(1000),
+ ok.
+
+listen(0, _Port, _Opts) ->
+ {error,eaddrinuse};
+listen(Retries, Port, Opts) ->
+ case gen_tcp:listen(Port, Opts) of
+ {error,eaddrinuse} ->
+ dbg("Listen port not released, trying again..."),
+ timer:sleep(5000),
+ listen(Retries-1, Port, Opts);
+ Ok = {ok,_LSock} ->
+ Ok;
+ Error ->
+ exit(Error)
+ end.
accept(#state{listen=LSock}=State) ->
Server = self(),
Acceptor = spawn_link(fun() -> do_accept(LSock,Server) end),
receive
{Acceptor,Sock} when is_port(Sock) ->
+ dbg("Connected to client on socket ~p\n", [Sock]),
case init_client(State#state{client=Sock}) of
stopped ->
- io:format("[telnet_server] telnet_server stopped\n"),
+ dbg("telnet_server stopped\n"),
ok;
R ->
- io:format("[telnet_server] connection to client "
- "closed with reason ~p~n",[R]),
+ dbg("Connection to client "
+ "closed with reason ~p~n",[R]),
accept(State)
end;
{Acceptor,closed} ->
- io:format("[telnet_server] listen socket closed unexpectedly, "
- "terminating telnet_server\n"),
+ dbg("Listen socket closed unexpectedly, "
+ "terminating telnet_server\n"),
ok;
stop ->
- io:format("[telnet_server] telnet_server stopped\n"),
+ dbg("telnet_server stopped\n"),
ok
end.
@@ -109,7 +128,9 @@ loop(State, N) ->
{tcp,_,Data} ->
try handle_data(Data,State) of
{ok,State1} ->
- loop(State1, N)
+ loop(State1, N);
+ closed ->
+ closed
catch
throw:Error ->
Error
@@ -118,16 +139,13 @@ loop(State, N) ->
closed;
{tcp_error,_,Error} ->
{error,tcp,Error};
+ disconnect ->
+ Sock = State#state.client,
+ dbg("Server closing connection on socket ~p~n", [Sock]),
+ ok = gen_tcp:close(Sock),
+ closed;
stop ->
stopped
- after
- 500 ->
- Report = lists:flatten(
- io_lib:format("The CT Telnet Server says: "
- "Iteration no ~w\r\n", [N])),
- dbg("Server sending: ~s~n", [Report]),
- gen_tcp:send(State#state.client, Report),
- loop(State, N+1)
end.
handle_data([?IAC|Cmd],State) ->
@@ -138,10 +156,16 @@ handle_data(Data,State) ->
case get_line(Data,[]) of
{Line,Rest} ->
WholeLine = lists:flatten(lists:reverse(State#state.buffer,Line)),
- {ok,State1} = do_handle_data(WholeLine,State),
- case Rest of
- [] -> {ok,State1};
- _ -> handle_data(Rest,State1)
+ case do_handle_data(WholeLine,State) of
+ {ok,State1} ->
+ case Rest of
+ [] -> {ok,State1};
+ _ -> handle_data(Rest,State1)
+ end;
+ {close,State1} ->
+ dbg("Server closing connection~n",[]),
+ gen_tcp:close(State1#state.client),
+ closed
end;
false ->
{ok,State#state{buffer=[Data|State#state.buffer]}}
@@ -171,22 +195,29 @@ do_handle_data(Data,#state{authorized=false}=State) ->
check_user(Data,State);
do_handle_data(Data,#state{authorized={user,_}}=State) ->
check_pwd(Data,State);
-do_handle_data("echo "++ Data,State) ->
+do_handle_data("echo " ++ Data,State) ->
send(Data++"\r\n> ",State),
{ok,State};
-do_handle_data("echo_no_prompt "++ Data,State) ->
+do_handle_data("echo_no_prompt " ++ Data,State) ->
send(Data,State),
{ok,State};
-do_handle_data("echo_ml "++ Data,State) ->
+do_handle_data("echo_ml " ++ Data,State) ->
Lines = string:tokens(Data," "),
ReturnData = string:join(Lines,"\n"),
send(ReturnData++"\r\n> ",State),
{ok,State};
-do_handle_data("echo_ml_no_prompt "++ Data,State) ->
+do_handle_data("echo_ml_no_prompt " ++ Data,State) ->
Lines = string:tokens(Data," "),
ReturnData = string:join(Lines,"\n"),
send(ReturnData,State),
{ok,State};
+do_handle_data("disconnect_after " ++WaitStr,State) ->
+ Wait = list_to_integer(string:strip(WaitStr,right,$\n)),
+ dbg("Server will close connection in ~w ms...", [Wait]),
+ erlang:send_after(Wait,self(),disconnect),
+ {ok,State};
+do_handle_data("disconnect" ++_,State) ->
+ {close,State};
do_handle_data([],State) ->
send("> ",State),
{ok,State};
@@ -234,4 +265,4 @@ get_line([],_) ->
dbg(_F) ->
dbg(_F,[]).
dbg(_F,_A) ->
- io:format("[telnet_server] "++_F,_A).
+ io:format("[telnet_server] " ++ _F,_A).