From 7d8397a7c9abdee42a1da57ba6b1bbc4b9f6a5c3 Mon Sep 17 00:00:00 2001 From: Ingela Anderton Andin Date: Wed, 11 Sep 2013 15:56:31 +0200 Subject: inets: httpc make httpc_cancel_request/[1,2] asynchronous --- lib/inets/src/http_client/httpc.erl | 12 +---- lib/inets/src/http_client/httpc_handler.erl | 14 ++--- lib/inets/src/http_client/httpc_manager.erl | 80 ++++++----------------------- 3 files changed, 22 insertions(+), 84 deletions(-) (limited to 'lib/inets/src/http_client') diff --git a/lib/inets/src/http_client/httpc.erl b/lib/inets/src/http_client/httpc.erl index 4d7023a8e9..151539f52f 100644 --- a/lib/inets/src/http_client/httpc.erl +++ b/lib/inets/src/http_client/httpc.erl @@ -208,16 +208,8 @@ cancel_request(RequestId) -> cancel_request(RequestId, Profile) when is_atom(Profile) orelse is_pid(Profile) -> ?hcrt("cancel request", [{request_id, RequestId}, {profile, Profile}]), - ok = httpc_manager:cancel_request(RequestId, profile_name(Profile)), - receive - %% If the request was already fulfilled throw away the - %% answer as the request has been canceled. - {http, {RequestId, _}} -> - ok - after 0 -> - ok - end. - + httpc_manager:cancel_request(RequestId, profile_name(Profile)). + %%-------------------------------------------------------------------------- %% set_options(Options) -> ok | {error, Reason} diff --git a/lib/inets/src/http_client/httpc_handler.erl b/lib/inets/src/http_client/httpc_handler.erl index 6f45e82eda..80c8b2439e 100644 --- a/lib/inets/src/http_client/httpc_handler.erl +++ b/lib/inets/src/http_client/httpc_handler.erl @@ -32,7 +32,7 @@ start_link/4, %% connect_and_send/2, send/2, - cancel/3, + cancel/2, stream_next/1, info/1 ]). @@ -117,8 +117,8 @@ send(Request, Pid) -> %% Description: Cancels a request. Intended to be called by the httpc %% manager process. %%-------------------------------------------------------------------- -cancel(RequestId, Pid, From) -> - cast({cancel, RequestId, From}, Pid). +cancel(RequestId, Pid) -> + cast({cancel, RequestId}, Pid). %%-------------------------------------------------------------------- @@ -400,19 +400,17 @@ handle_call(info, _, State) -> %% handle_keep_alive_queue/2 on the other hand will just skip the %% request as if it was never issued as in this case the request will %% not have been sent. -handle_cast({cancel, RequestId, From}, +handle_cast({cancel, RequestId}, #state{request = #request{id = RequestId} = Request, profile_name = ProfileName, canceled = Canceled} = State) -> ?hcrv("cancel current request", [{request_id, RequestId}, {profile, ProfileName}, {canceled, Canceled}]), - httpc_manager:request_canceled(RequestId, ProfileName, From), - ?hcrv("canceled", []), {stop, normal, State#state{canceled = [RequestId | Canceled], request = Request#request{from = answer_sent}}}; -handle_cast({cancel, RequestId, From}, +handle_cast({cancel, RequestId}, #state{profile_name = ProfileName, request = #request{id = CurrId}, canceled = Canceled} = State) -> @@ -420,8 +418,6 @@ handle_cast({cancel, RequestId, From}, {curr_req_id, CurrId}, {profile, ProfileName}, {canceled, Canceled}]), - httpc_manager:request_canceled(RequestId, ProfileName, From), - ?hcrv("canceled", []), {noreply, State#state{canceled = [RequestId | Canceled]}}; handle_cast(stream_next, #state{session = Session} = State) -> diff --git a/lib/inets/src/http_client/httpc_manager.erl b/lib/inets/src/http_client/httpc_manager.erl index 3cd225abb3..a3ed371e61 100644 --- a/lib/inets/src/http_client/httpc_manager.erl +++ b/lib/inets/src/http_client/httpc_manager.erl @@ -29,7 +29,6 @@ start_link/3, request/2, cancel_request/2, - request_canceled/3, request_done/2, retry_request/2, redirect_request/2, @@ -144,22 +143,7 @@ redirect_request(Request, ProfileName) -> %%-------------------------------------------------------------------- cancel_request(RequestId, ProfileName) -> - call(ProfileName, {cancel_request, RequestId}). - - -%%-------------------------------------------------------------------- -%% Function: request_canceled(RequestId, ProfileName) -> ok -%% RequestId - ref() -%% ProfileName = atom() -%% -%% Description: Confirms that a request has been canceld. Intended to -%% be called by the httpc handler process. -%%-------------------------------------------------------------------- - -request_canceled(RequestId, ProfileName, From) -> - gen_server:reply(From, ok), - cast(ProfileName, {request_canceled, RequestId}). - + cast(ProfileName, {cancel_request, RequestId}). %%-------------------------------------------------------------------- %% Function: request_done(RequestId, ProfileName) -> ok @@ -474,26 +458,6 @@ handle_call({request, Request}, _, State) -> {stop, Error, httpc_response:error(Request, Error), State} end; -handle_call({cancel_request, RequestId}, From, - #state{handler_db = HandlerDb} = State) -> - ?hcri("cancel_request", [{request_id, RequestId}]), - case ets:lookup(HandlerDb, RequestId) of - [] -> - %% The request has allready compleated make sure - %% it is deliverd to the client process queue so - %% it can be thrown away by httpc:cancel_request - %% This delay is hopfully a temporary workaround. - %% Note that it will not not delay the manager, - %% only the client that called httpc:cancel_request - timer:apply_after(?DELAY, gen_server, reply, [From, ok]), - {noreply, State}; - [{_, Pid, _}] -> - httpc_handler:cancel(RequestId, Pid, From), - {noreply, - State#state{cancel = - [{RequestId, Pid, From} | State#state.cancel]}} - end; - handle_call(reset_cookies, _, #state{cookie_db = CookieDb} = State) -> ?hcrv("reset cookies", []), httpc_cookie:reset_db(CookieDb), @@ -555,19 +519,19 @@ handle_cast({retry_or_redirect_request, Request}, State) -> {stop, Error, State} end; -handle_cast({request_canceled, RequestId}, State) -> - ?hcrv("request canceled", [{request_id, RequestId}]), - ets:delete(State#state.handler_db, RequestId), - case lists:keysearch(RequestId, 1, State#state.cancel) of - {value, Entry = {RequestId, _, From}} -> - ?hcrt("found in cancel", [{from, From}]), - {noreply, - State#state{cancel = lists:delete(Entry, State#state.cancel)}}; - Else -> - ?hcrt("not found in cancel", [{else, Else}]), - {noreply, State} +handle_cast({cancel_request, RequestId}, + #state{handler_db = HandlerDb} = State) -> + case ets:lookup(HandlerDb, RequestId) of + [] -> + %% Request already compleated nothing to + %% cancel + {noreply, State}; + [{_, Pid, _}] -> + httpc_handler:cancel(RequestId, Pid), + ets:delete(State#state.handler_db, RequestId), + {noreply, State} end; - + handle_cast({request_done, RequestId}, State) -> ?hcrv("request done", [{request_id, RequestId}]), ets:delete(State#state.handler_db, RequestId), @@ -629,22 +593,8 @@ handle_info({'EXIT', _, _}, State) -> %% Handled in DOWN {noreply, State}; handle_info({'DOWN', _, _, Pid, _}, State) -> - ets:match_delete(State#state.handler_db, {'_', Pid, '_'}), - - %% If there where any canceled request, handled by the - %% the process that now has terminated, the - %% cancelation can be viewed as sucessfull! - NewCanceldList = - lists:foldl(fun(Entry = {_, HandlerPid, From}, Acc) -> - case HandlerPid of - Pid -> - gen_server:reply(From, ok), - lists:delete(Entry, Acc); - _ -> - Acc - end - end, State#state.cancel, State#state.cancel), - {noreply, State#state{cancel = NewCanceldList}}; + ets:match_delete(State#state.handler_db, {'_', Pid, '_'}), + {noreply, State}; handle_info(Info, State) -> Report = io_lib:format("Unknown message in " "httpc_manager:handle_info ~p~n", [Info]), -- cgit v1.2.3