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authorPéter Dimitrov <[email protected]>2018-08-27 15:58:40 +0200
committerPéter Dimitrov <[email protected]>2018-08-27 15:58:40 +0200
commitab8faff46daf24db6f20dc2a307cf68d53034450 (patch)
treee5d90d8a9d7882a04722bcfb857ccb0b2055dc72 /lib
parent30b5899883282b746b55fbf59b73211bbd071ddd (diff)
parentd3962078e76f1f04af12aecbea9d0fc33df3ea62 (diff)
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Merge branch 'peterdmv/inets/fix_http_client/OTP-15242' into maint-20
* peterdmv/inets/fix_http_client/OTP-15242: inets: Prepare for release inets: Robust handling of 204, 304, 1xx responses Change-Id: I12dced982907c3462fefb8a4ffaae8b365821f97
Diffstat (limited to 'lib')
-rw-r--r--lib/inets/src/http_client/httpc_handler.erl18
-rw-r--r--lib/inets/test/httpc_SUITE.erl56
-rw-r--r--lib/inets/vsn.mk2
3 files changed, 70 insertions, 6 deletions
diff --git a/lib/inets/src/http_client/httpc_handler.erl b/lib/inets/src/http_client/httpc_handler.erl
index 26e4f4e699..1a2ce277bf 100644
--- a/lib/inets/src/http_client/httpc_handler.erl
+++ b/lib/inets/src/http_client/httpc_handler.erl
@@ -980,13 +980,23 @@ handle_http_body(_, #state{status = {ssl_tunnel, Request},
NewState = answer_request(Request, ClientErrMsg, State),
{stop, normal, NewState};
-handle_http_body(<<>>, #state{status_line = {_,304, _}} = State) ->
+%% All 1xx (informational), 204 (no content), and 304 (not modified)
+%% responses MUST NOT include a message-body, and thus are always
+%% terminated by the first empty line after the header fields.
+%% This implies that chunked encoding MUST NOT be used for these
+%% status codes.
+handle_http_body(<<>>, #state{headers = Headers,
+ status_line = {_,StatusCode, _}} = State)
+ when Headers#http_response_h.'transfer-encoding' =/= "chunked" andalso
+ (StatusCode =:= 204 orelse %% No Content
+ StatusCode =:= 304 orelse %% Not Modified
+ 100 =< StatusCode andalso StatusCode =< 199) -> %% Informational
handle_response(State#state{body = <<>>});
-handle_http_body(<<>>, #state{status_line = {_,204, _}} = State) ->
- handle_response(State#state{body = <<>>});
-handle_http_body(<<>>, #state{request = #request{method = head}} = State) ->
+handle_http_body(<<>>, #state{headers = Headers,
+ request = #request{method = head}} = State)
+ when Headers#http_response_h.'transfer-encoding' =/= "chunked" ->
handle_response(State#state{body = <<>>});
handle_http_body(Body, #state{headers = Headers,
diff --git a/lib/inets/test/httpc_SUITE.erl b/lib/inets/test/httpc_SUITE.erl
index d723fd0460..f3898e1b74 100644
--- a/lib/inets/test/httpc_SUITE.erl
+++ b/lib/inets/test/httpc_SUITE.erl
@@ -157,7 +157,8 @@ misc() ->
[
server_does_not_exist,
timeout_memory_leak,
- wait_for_whole_response
+ wait_for_whole_response,
+ post_204_chunked
].
%%--------------------------------------------------------------------
@@ -1243,6 +1244,59 @@ wait_for_whole_response(Config) when is_list(Config) ->
ReqSeqNumServer ! shutdown.
%%--------------------------------------------------------------------
+post_204_chunked() ->
+ [{doc,"Test that chunked encoded 204 responses do not freeze the http client"}].
+post_204_chunked(_Config) ->
+ Msg = "HTTP/1.1 204 No Content\r\n" ++
+ "Date: Thu, 23 Aug 2018 13:36:29 GMT\r\n" ++
+ "Content-Type: text/html\r\n" ++
+ "Server: inets/6.5.2.3\r\n" ++
+ "Cache-Control: no-cache\r\n" ++
+ "Pragma: no-cache\r\n" ++
+ "Expires: Fri, 24 Aug 2018 07:49:35 GMT\r\n" ++
+ "Transfer-Encoding: chunked\r\n" ++
+ "\r\n",
+ Chunk = "0\r\n\r\n",
+
+ {ok, ListenSocket} = gen_tcp:listen(0, [{active,once}, binary]),
+ {ok,{_,Port}} = inet:sockname(ListenSocket),
+ spawn(fun () -> custom_server(Msg, Chunk, ListenSocket) end),
+
+ {ok,Host} = inet:gethostname(),
+ End = "/cgi-bin/erl/httpd_example:post_204",
+ URL = ?URL_START ++ Host ++ ":" ++ integer_to_list(Port) ++ End,
+ {ok, _} = httpc:request(post, {URL, [], "text/html", []}, [], []),
+ timer:sleep(500),
+ %% Second request times out in the faulty case.
+ {ok, _} = httpc:request(post, {URL, [], "text/html", []}, [], []).
+
+custom_server(Msg, Chunk, ListenSocket) ->
+ {ok, Accept} = gen_tcp:accept(ListenSocket),
+ receive_packet(),
+ send_response(Msg, Chunk, Accept),
+ custom_server_loop(Msg, Chunk, Accept).
+
+custom_server_loop(Msg, Chunk, Accept) ->
+ receive_packet(),
+ send_response(Msg, Chunk, Accept),
+ custom_server_loop(Msg, Chunk, Accept).
+
+send_response(Msg, Chunk, Socket) ->
+ inet:setopts(Socket, [{active, once}]),
+ gen_tcp:send(Socket, Msg),
+ timer:sleep(250),
+ gen_tcp:send(Socket, Chunk).
+
+receive_packet() ->
+ receive
+ {tcp, _, Msg} ->
+ ct:log("Message received: ~p", [Msg])
+ after
+ 1000 ->
+ ct:fail("Timeout: did not recive packet")
+ end.
+
+%%--------------------------------------------------------------------
stream_fun_server_close() ->
[{doc, "Test that an error msg is received when using a receiver fun as stream target"}].
stream_fun_server_close(Config) when is_list(Config) ->
diff --git a/lib/inets/vsn.mk b/lib/inets/vsn.mk
index c1f5a2c4e0..3259a8a195 100644
--- a/lib/inets/vsn.mk
+++ b/lib/inets/vsn.mk
@@ -19,6 +19,6 @@
# %CopyrightEnd%
APPLICATION = inets
-INETS_VSN = 6.5.2.3
+INETS_VSN = 6.5.2.4
PRE_VSN =
APP_VSN = "$(APPLICATION)-$(INETS_VSN)$(PRE_VSN)"