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authorPéter Dimitrov <[email protected]>2018-08-21 09:25:28 +0200
committerPéter Dimitrov <[email protected]>2018-08-22 16:08:22 +0200
commitc492a313ce2893fdb8d5f1215b95d437a00c92de (patch)
tree55fe5ad9f07befc1da663d14bc3a6529f6e8537a
parent70aceaec7a985c27787f37ce07e4b072ec52ed61 (diff)
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inets: Do not use chunked encoding with 1xx, 204, 304
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. Change-Id: If6778165c947e64bc20d1ecab7a669e0b096f1a9
-rw-r--r--lib/inets/src/http_server/httpd_example.erl8
-rw-r--r--lib/inets/src/http_server/mod_esi.erl15
-rw-r--r--lib/inets/test/httpd_SUITE.erl38
3 files changed, 56 insertions, 5 deletions
diff --git a/lib/inets/src/http_server/httpd_example.erl b/lib/inets/src/http_server/httpd_example.erl
index 47a8c48d01..dbf7c44ad3 100644
--- a/lib/inets/src/http_server/httpd_example.erl
+++ b/lib/inets/src/http_server/httpd_example.erl
@@ -22,7 +22,7 @@
-export([print/1]).
-export([get/2, put/2, post/2, yahoo/2, test1/2, get_bin/2, peer/2,new_status_and_location/2]).
--export([newformat/3, post_chunked/3]).
+-export([newformat/3, post_chunked/3, post_204/3]).
%% These are used by the inets test-suite
-export([delay/1, chunk_timeout/3]).
@@ -151,6 +151,12 @@ post_chunked(SessionID, _Env, {last, _Body, undefined} = _Bodychunk) ->
post_chunked(_, _, _Body) ->
exit(body_not_chunked).
+post_204(SessionID, _Env, _Input) ->
+ mod_esi:deliver(SessionID,
+ ["Status: 204 No Content" ++ "\r\n\r\n"]),
+ mod_esi:deliver(SessionID, []).
+
+
newformat(SessionID,_,_) ->
mod_esi:deliver(SessionID, "Content-Type:text/html\r\n\r\n"),
mod_esi:deliver(SessionID, top("new esi format test")),
diff --git a/lib/inets/src/http_server/mod_esi.erl b/lib/inets/src/http_server/mod_esi.erl
index 3206d957d9..9fbedce6aa 100644
--- a/lib/inets/src/http_server/mod_esi.erl
+++ b/lib/inets/src/http_server/mod_esi.erl
@@ -394,7 +394,16 @@ deliver_webpage_chunk(#mod{config_db = Db} = ModData, Pid, Timeout) ->
Continue;
{Headers, Body} ->
{ok, NewHeaders, StatusCode} = httpd_esi:handle_headers(Headers),
- IsDisableChunkedSend = httpd_response:is_disable_chunked_send(Db),
+ %% 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.
+ IsDisableChunkedSend =
+ httpd_response:is_disable_chunked_send(Db) orelse
+ StatusCode =:= 204 orelse %% No Content
+ StatusCode =:= 304 orelse %% Not Modified
+ (100 =< StatusCode andalso StatusCode =< 199), %% Informational
case (ModData#mod.http_version =/= "HTTP/1.1") or
(IsDisableChunkedSend) of
true ->
@@ -405,8 +414,8 @@ deliver_webpage_chunk(#mod{config_db = Db} = ModData, Pid, Timeout) ->
send_headers(ModData, StatusCode,
[{"transfer-encoding",
"chunked"} | NewHeaders])
- end,
- handle_body(Pid, ModData, Body, Timeout, length(Body),
+ end,
+ handle_body(Pid, ModData, Body, Timeout, length(Body),
IsDisableChunkedSend);
timeout ->
send_headers(ModData, 504, [{"connection", "close"}]),
diff --git a/lib/inets/test/httpd_SUITE.erl b/lib/inets/test/httpd_SUITE.erl
index 95466887f9..90192e633c 100644
--- a/lib/inets/test/httpd_SUITE.erl
+++ b/lib/inets/test/httpd_SUITE.erl
@@ -118,7 +118,7 @@ groups() ->
disturbing_1_0,
disturbing_0_9
]},
- {post, [], [chunked_post, chunked_chunked_encoded_post]},
+ {post, [], [chunked_post, chunked_chunked_encoded_post, post_204]},
{basic_auth, [], [basic_auth_1_1, basic_auth_1_0, basic_auth_0_9]},
{auth_api, [], [auth_api_1_1, auth_api_1_0, auth_api_0_9
]},
@@ -746,6 +746,42 @@ chunked_chunked_encoded_post(Config) when is_list(Config) ->
[{http_version, "HTTP/1.1"} | Config],
[{statuscode, 200}]).
+%%-------------------------------------------------------------------------
+post_204() ->
+ [{doc,"Test that 204 responses are not chunk encoded"}].
+post_204(Config) ->
+ Host = proplists:get_value(host, Config),
+ Port = proplists:get_value(port, Config),
+ SockType = proplists:get_value(type, Config),
+ TranspOpts = transport_opts(SockType, Config),
+ Request = "POST /cgi-bin/erl/httpd_example:post_204 ",
+
+ try inets_test_lib:connect_bin(SockType, Host, Port, TranspOpts) of
+ {ok, Socket} ->
+ RequestStr = http_request(Request, "HTTP/1.1", Host),
+ ok = inets_test_lib:send(SockType, Socket, RequestStr),
+ receive
+ {tcp, Socket, Data} ->
+ case binary:match(Data, <<"chunked">>,[]) of
+ nomatch ->
+ ok;
+ {_, _} ->
+ ct:fail("Chunked encoding detected.")
+ end
+ after 2000 ->
+ ct:fail(connection_timed_out)
+ end;
+ ConnectError ->
+ ct:fail({connect_error, ConnectError,
+ [SockType, Host, Port, TranspOpts]})
+ catch
+ T:E ->
+ ct:fail({connect_failure,
+ [{type, T},
+ {error, E},
+ {stacktrace, erlang:get_stacktrace()},
+ {args, [SockType, Host, Port, TranspOpts]}]})
+ end.
%%-------------------------------------------------------------------------
htaccess_1_1(Config) when is_list(Config) ->