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authorMicael Karlberg <[email protected]>2012-05-22 14:53:45 +0200
committerMicael Karlberg <[email protected]>2012-05-22 14:53:45 +0200
commit2c27a2e2a57d37df1f33f481dc0edbfd2cc83db3 (patch)
treeef2aa3df04f26a327976c0de7afa5622e7998ad3 /lib/inets/src
parent76e98a93821a0e628a465030bfcb63fd360afc8a (diff)
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[inets/httpc] Cancel request does not work
Cancel request does not work due to incorrect handler table creation (wrong keypos). OTP-10092
Diffstat (limited to 'lib/inets/src')
-rw-r--r--lib/inets/src/http_client/httpc_manager.erl105
1 files changed, 54 insertions, 51 deletions
diff --git a/lib/inets/src/http_client/httpc_manager.erl b/lib/inets/src/http_client/httpc_manager.erl
index b225b43214..771968e169 100644
--- a/lib/inets/src/http_client/httpc_manager.erl
+++ b/lib/inets/src/http_client/httpc_manager.erl
@@ -59,17 +59,9 @@
options = #options{}
}).
--record(handler_info,
- {
- id, % Id of the request: request_id()
- starter, % Pid of the handler starter process (temp): pid()
- handler, % Pid of the handler process: pid()
- from, % From for the request: from()
- state % State of the handler: initiating | started | operational | canceled
- }).
-
-define(DELAY, 500).
+
%%====================================================================
%% Internal Application API
%%====================================================================
@@ -379,8 +371,7 @@ do_init(ProfileName, CookiesDir) ->
%% Create handler db
?hcrt("create handler/request db", []),
HandlerDbName = handler_db_name(ProfileName),
- ets:new(HandlerDbName,
- [protected, set, named_table, {keypos, #handler_info.id}]),
+ ets:new(HandlerDbName, [protected, set, named_table, {keypos, 1}]),
%% Cookie DB
?hcrt("create cookie db", []),
@@ -414,9 +405,10 @@ handle_call({request, Request}, _, State) ->
{stop, Error, httpc_response:error(Request, Error), State}
end;
-handle_call({cancel_request, RequestId}, From, State) ->
+handle_call({cancel_request, RequestId}, From,
+ #state{handler_db = HandlerDb} = State) ->
?hcri("cancel_request", [{request_id, RequestId}]),
- case ets:lookup(State#state.handler_db, RequestId) of
+ case ets:lookup(HandlerDb, RequestId) of
[] ->
%% The request has allready compleated make sure
%% it is deliverd to the client process queue so
@@ -428,9 +420,9 @@ handle_call({cancel_request, RequestId}, From, State) ->
{noreply, State};
[{_, Pid, _}] ->
httpc_handler:cancel(RequestId, Pid, From),
- {noreply, State#state{cancel =
- [{RequestId, Pid, From} |
- State#state.cancel]}}
+ {noreply,
+ State#state{cancel =
+ [{RequestId, Pid, From} | State#state.cancel]}}
end;
handle_call(reset_cookies, _, #state{cookie_db = CookieDb} = State) ->
@@ -645,7 +637,7 @@ code_change(_,
code_change(_, State, _) ->
{ok, State}.
-%% This function is to catch everything that calls through the cracks...
+%% This function is used to catch everything that falls through the cracks...
update_session_table(SessionDB, Transform) ->
ets:safe_fixtable(SessionDB, true),
update_session_table(SessionDB, ets:first(SessionDB), Transform),
@@ -678,35 +670,42 @@ get_manager_info(#state{handler_db = HDB,
CookieInfo = httpc_cookie:which_cookies(CDB),
[{handlers, HandlerInfo}, {cookies, CookieInfo}].
+sort_handlers(Unsorted) ->
+ sort_handlers2(lists:keysort(1, Unsorted)).
+
+sort_handlers2([]) ->
+ [];
+sort_handlers2([{HandlerPid, RequestId}|L]) ->
+ {Handler, Rest} = sort_handlers2(HandlerPid, [RequestId], L),
+ [Handler | sort_handlers2(Rest)].
+
+sort_handlers2(HandlerPid, Reqs, []) ->
+ {{HandlerPid, lists:sort(Reqs)}, []};
+sort_handlers2(HandlerPid, Reqs, [{HandlerPid, ReqId}|Rest]) ->
+ sort_handlers2(HandlerPid, [ReqId|Reqs], Rest);
+sort_handlers2(HandlerPid1, Reqs, [{HandlerPid2, _}|_] = Rest)
+ when HandlerPid1 =/= HandlerPid2 ->
+ {{HandlerPid1, lists:sort(Reqs)}, Rest}.
+
get_handler_info(Tab) ->
- Pattern = #handler_info{handler = '$1',
- state = '$2',
- _ = '_'},
- Handlers1 = [{Pid, State} || [Pid, State] <- ets:match(Tab, Pattern)],
- F = fun({Pid, State} = Elem, Acc) when State =/= canceled ->
- case lists:keymember(Pid, 1, Acc) of
- true ->
- Acc;
- false ->
- [Elem | Acc]
- end;
- (_, Acc) ->
- Acc
- end,
- Handlers2 = lists:foldl(F, [], Handlers1),
- Handlers3 = [{Pid, State,
- case (catch httpc_handler:info(Pid)) of
- {'EXIT', _} ->
+ Pattern = {'$2', '$1', '_'},
+ Handlers1 = [{Pid, Id} || [Pid, Id] <- ets:match(Tab, Pattern)],
+ Handlers2 = sort_handlers(Handlers1),
+ Handlers3 = [{Pid, Reqs,
+ try
+ begin
+ httpc_handler:info(Pid)
+ end
+ catch
+ _:_ ->
%% Why would this crash?
%% Only if the process has died, but we don't
%% know about it?
- [];
- Else ->
- Else
- end} ||
- {Pid, State} <- Handlers2],
+ []
+ end} || {Pid, Reqs} <- Handlers2],
Handlers3.
+
handle_request(#request{settings =
#http_options{version = "HTTP/0.9"}} = Request,
State) ->
@@ -758,19 +757,21 @@ handle_request(Request, State = #state{options = Options}) ->
{reply, {ok, NewRequest#request.id}, State}.
-start_handler(Request, State) ->
+start_handler(#request{id = Id,
+ from = From} = Request,
+ #state{profile_name = ProfileName,
+ handler_db = HandlerDb,
+ options = Options}) ->
{ok, Pid} =
case is_inets_manager() of
true ->
httpc_handler_sup:start_child([whereis(httpc_handler_sup),
- Request, State#state.options,
- State#state.profile_name]);
+ Request, Options, ProfileName]);
false ->
- httpc_handler:start_link(self(), Request, State#state.options,
- State#state.profile_name)
+ httpc_handler:start_link(self(), Request, Options, ProfileName)
end,
- ets:insert(State#state.handler_db, {Request#request.id,
- Pid, Request#request.from}),
+ HandlerInfo = {Id, Pid, From},
+ ets:insert(HandlerDb, HandlerInfo),
erlang:monitor(process, Pid).
@@ -827,12 +828,14 @@ select_session(Candidates, Max) ->
{ok, HandlerPid}
end.
-pipeline_or_keep_alive(Request, HandlerPid, State) ->
+pipeline_or_keep_alive(#request{id = Id,
+ from = From} = Request,
+ HandlerPid,
+ #state{handler_db = HandlerDb} = State) ->
case (catch httpc_handler:send(Request, HandlerPid)) of
ok ->
- ets:insert(State#state.handler_db, {Request#request.id,
- HandlerPid,
- Request#request.from});
+ HandlerInfo = {Id, HandlerPid, From},
+ ets:insert(HandlerDb, HandlerInfo);
_ -> % timeout pipelining failed
start_handler(Request, State)
end.