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authorKirilll Zaborsky <[email protected]>2014-10-08 15:31:13 +0400
committerIngela Anderton Andin <[email protected]>2014-12-01 16:51:42 +0100
commitd7142993ed372c7f51ba381d5166ec7707951670 (patch)
tree41ea35c3ca5ad3918db0a8166811703286ef4264
parent3651fbc0ff9b87c3ffe765ad1583e025f31d2259 (diff)
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inets: stop httpc_handler on 'connection closed' send error
httpc_handler should be stopped when sending requests returns error because of a closed connection and `tcp_closed` message could not be catched (see http://erlang.org/pipermail/erlang-bugs/2007-May/000346.html ) otherwise it will lead to process leak.
-rw-r--r--lib/inets/src/http_client/httpc_handler.erl19
-rw-r--r--lib/inets/test/httpc_SUITE.erl29
2 files changed, 39 insertions, 9 deletions
diff --git a/lib/inets/src/http_client/httpc_handler.erl b/lib/inets/src/http_client/httpc_handler.erl
index 0a42e7210c..7f7328f1d9 100644
--- a/lib/inets/src/http_client/httpc_handler.erl
+++ b/lib/inets/src/http_client/httpc_handler.erl
@@ -316,8 +316,9 @@ handle_call(#request{address = Addr} = Request, _,
{reply, ok, State}
end;
{error, Reason} ->
- ?hcri("failed sending request", [{reason, Reason}]),
- {reply, {pipeline_failed, Reason}, State0}
+ ?hcri("failed sending request", [{reason, Reason}]),
+ NewPipeline = queue:in(Request, State0#state.pipeline),
+ {stop, shutdown, {pipeline_failed, Reason}, State0#state{pipeline = NewPipeline}}
end;
handle_call(#request{address = Addr} = Request, _,
@@ -355,25 +356,25 @@ handle_call(#request{address = Addr} = Request, _,
?hcrd("no current request", []),
cancel_timer(Timers#timers.queue_timer,
timeout_queue),
+ NewTimers = Timers#timers{queue_timer = undefined},
+ State1 = State0#state{timers = NewTimers},
Address = handle_proxy(Addr, Proxy),
case httpc_request:send(Address, Session, Request) of
ok ->
?hcrd("request sent", []),
%% Activate the request time out for the new request
- State1 =
- activate_request_timeout(State0#state{request = Request}),
- NewTimers = State1#state.timers,
+ State2 =
+ activate_request_timeout(State1#state{request = Request}),
NewSession =
Session#session{queue_length = 1,
client_close = ClientClose},
insert_session(NewSession, ProfileName),
- State = init_wait_for_response_state(Request, State1#state{session = NewSession,
- timers = NewTimers}),
+ State = init_wait_for_response_state(Request, State2#state{session = NewSession}),
{reply, ok, State};
{error, Reason} ->
?hcri("failed sending request", [{reason, Reason}]),
- {reply, {request_failed, Reason}, State0}
+ {stop, shutdown, {keepalive_failed, Reason}, State1}
end
end;
@@ -1329,7 +1330,7 @@ handle_keep_alive_queue(#state{status = keep_alive,
Session, <<>>,
State#state{keep_alive = KeepAlive});
{error, Reason} ->
- {reply, {keep_alive_failed, Reason}, State}
+ {stop, shutdown, {keepalive_failed, Reason}, State}
end
end
end.
diff --git a/lib/inets/test/httpc_SUITE.erl b/lib/inets/test/httpc_SUITE.erl
index c535d59b9f..78d7ecbf61 100644
--- a/lib/inets/test/httpc_SUITE.erl
+++ b/lib/inets/test/httpc_SUITE.erl
@@ -28,6 +28,7 @@
-include_lib("common_test/include/ct.hrl").
-include("inets_test_lib.hrl").
-include("http_internal.hrl").
+-include("httpc_internal.hrl").
%% Note: This directive should only be used in test suites.
-compile(export_all).
@@ -105,6 +106,7 @@ only_simulated() ->
empty_response_header,
remote_socket_close,
remote_socket_close_async,
+ process_leak_on_keepalive%,
transfer_encoding,
transfer_encoding_identity,
redirect_loop,
@@ -900,6 +902,33 @@ remote_socket_close_async(Config) when is_list(Config) ->
%%-------------------------------------------------------------------------
+process_leak_on_keepalive(Config) ->
+ {ok, ClosedSocket} = gen_tcp:listen(6666, [{active, false}]),
+ ok = gen_tcp:close(ClosedSocket),
+ Request = {url(group_name(Config), "/dummy.html", Config), []},
+ HttpcHandlers0 = supervisor:which_children(httpc_handler_sup),
+ {ok, {{_, 200, _}, _, Body}} = httpc:request(get, Request, [], []),
+ HttpcHandlers1 = supervisor:which_children(httpc_handler_sup),
+ ChildrenCount = supervisor:count_children(httpc_handler_sup),
+ %% Assuming that the new handler will be selected for keep_alive
+ %% which could not be the case if other handlers existed
+ [{undefined, Pid, worker, [httpc_handler]}] =
+ ordsets:to_list(
+ ordsets:subtract(ordsets:from_list(HttpcHandlers1),
+ ordsets:from_list(HttpcHandlers0))),
+ sys:replace_state(
+ Pid, fun (State) ->
+ Session = element(3, State),
+ setelement(3, State, Session#session{socket=ClosedSocket})
+ end),
+ {ok, {{_, 200, _}, _, Body}} = httpc:request(get, Request, [], []),
+ %% bad handler with the closed socket should get replaced by
+ %% the new one, so children count should stay the same
+ ChildrenCount = supervisor:count_children(httpc_handler_sup),
+ ok.
+
+%%-------------------------------------------------------------------------
+
stream_to_pid(Config) when is_list(Config) ->
ReceiverPid = create_receiver(pid),
Receiver = ReceiverPid,