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-rw-r--r--src/cowboy_handler.erl23
1 files changed, 21 insertions, 2 deletions
diff --git a/src/cowboy_handler.erl b/src/cowboy_handler.erl
index 65e22b7..3b0af6f 100644
--- a/src/cowboy_handler.erl
+++ b/src/cowboy_handler.erl
@@ -195,7 +195,7 @@ handler_loop(Req, State=#state{loop_buffer_size=NbBytes,
handler_before_loop(Req, State#state{resp_sent=true},
Handler, HandlerState);
{timeout, TRef, ?MODULE} ->
- terminate_request(Req, State, Handler, HandlerState,
+ handler_after_loop(Req, State, Handler, HandlerState,
{normal, timeout});
{timeout, OlderTRef, ?MODULE} when is_reference(OlderTRef) ->
handler_before_loop(Req, State, Handler, HandlerState);
@@ -210,7 +210,7 @@ handler_loop(Req, State=#state{loop_buffer_size=NbBytes,
handler_call(Req, State, Handler, HandlerState, Message) ->
try Handler:info(Message, Req, HandlerState) of
{ok, Req2, HandlerState2} ->
- terminate_request(Req2, State, Handler, HandlerState2,
+ handler_after_loop(Req2, State, Handler, HandlerState2,
{normal, shutdown});
{loop, Req2, HandlerState2} ->
handler_before_loop(Req2, State, Handler, HandlerState2);
@@ -230,6 +230,25 @@ handler_call(Req, State, Handler, HandlerState, Message) ->
error_terminate(Req, State)
end.
+%% It is sometimes important to make a socket passive as it was initially
+%% and as it is expected to be by cowboy_protocol, right after we're done
+%% with loop handling. The browser may freely pipeline a bunch of requests
+%% if previous one was, say, a JSONP long-polling request.
+-spec handler_after_loop(Req, #state{}, module(), any(),
+ {normal, timeout | shutdown} | {error, atom()}) ->
+ {ok, Req, cowboy_middleware:env()} when Req::cowboy_req:req().
+handler_after_loop(Req, State, Handler, HandlerState, Reason) ->
+ [Socket, Transport] = cowboy_req:get([socket, transport], Req),
+ Transport:setopts(Socket, [{active, false}]),
+ {OK, _Closed, _Error} = Transport:messages(),
+ Req2 = receive
+ {OK, Socket, Data} ->
+ cowboy_req:append_buffer(Data, Req)
+ after 0 ->
+ Req
+ end,
+ terminate_request(Req2, State, Handler, HandlerState, Reason).
+
-spec terminate_request(Req, #state{}, module(), any(),
{normal, timeout | shutdown} | {error, atom()}) ->
{ok, Req, cowboy_middleware:env()} when Req::cowboy_req:req().