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-rw-r--r--test/handlers/ws_active_commands_h.erl4
-rw-r--r--test/handlers/ws_deflate_commands_h.erl24
-rw-r--r--test/ws_handler_SUITE.erl42
3 files changed, 67 insertions, 3 deletions
diff --git a/test/handlers/ws_active_commands_h.erl b/test/handlers/ws_active_commands_h.erl
index 4cdb3b1..1c615e3 100644
--- a/test/handlers/ws_active_commands_h.erl
+++ b/test/handlers/ws_active_commands_h.erl
@@ -1,5 +1,5 @@
-%% This module takes commands from the x-commands header
-%% and returns them in the websocket_init/1 callback.
+%% This module starts with active mode disabled
+%% and enables it again once a timeout is triggered.
-module(ws_active_commands_h).
-behavior(cowboy_websocket).
diff --git a/test/handlers/ws_deflate_commands_h.erl b/test/handlers/ws_deflate_commands_h.erl
new file mode 100644
index 0000000..14236bc
--- /dev/null
+++ b/test/handlers/ws_deflate_commands_h.erl
@@ -0,0 +1,24 @@
+%% This module enables/disables compression
+%% every time it echoes a frame.
+
+-module(ws_deflate_commands_h).
+-behavior(cowboy_websocket).
+
+-export([init/2]).
+-export([websocket_handle/2]).
+-export([websocket_info/2]).
+
+init(Req, RunOrHibernate) ->
+ {cowboy_websocket, Req,
+ #{deflate => true, hibernate => RunOrHibernate},
+ #{compress => true}}.
+
+websocket_handle(Frame, State=#{deflate := Deflate0, hibernate := run}) ->
+ Deflate = not Deflate0,
+ {[Frame, {deflate, Deflate}], State#{deflate => Deflate}};
+websocket_handle(Frame, State=#{deflate := Deflate0, hibernate := hibernate}) ->
+ Deflate = not Deflate0,
+ {[Frame, {deflate, Deflate}], State#{deflate => Deflate}, hibernate}.
+
+websocket_info(_Info, State) ->
+ {[], State}.
diff --git a/test/ws_handler_SUITE.erl b/test/ws_handler_SUITE.erl
index 2caacca..6e2bb41 100644
--- a/test/ws_handler_SUITE.erl
+++ b/test/ws_handler_SUITE.erl
@@ -50,7 +50,8 @@ init_dispatch(Name) ->
{"/init", ws_init_commands_h, RunOrHibernate},
{"/handle", ws_handle_commands_h, RunOrHibernate},
{"/info", ws_info_commands_h, RunOrHibernate},
- {"/active", ws_active_commands_h, RunOrHibernate}
+ {"/active", ws_active_commands_h, RunOrHibernate},
+ {"/deflate", ws_deflate_commands_h, RunOrHibernate}
]}]).
%% Support functions for testing using Gun.
@@ -217,3 +218,42 @@ websocket_active_false(Config) ->
{ok, {text, <<"Not received until the handler enables active again.">>}}
= receive_ws(ConnPid, StreamRef),
ok.
+
+websocket_deflate_false(Config) ->
+ doc("The {deflate, false} command temporarily disables compression. "
+ "The {deflate, true} command reenables it."),
+ %% We disable context takeover so that the compressed data
+ %% does not change across all frames.
+ {ok, Socket, Headers} = ws_SUITE:do_handshake("/deflate",
+ "Sec-WebSocket-Extensions: permessage-deflate; server_no_context_takeover\r\n", Config),
+ {_, "permessage-deflate; server_no_context_takeover"}
+ = lists:keyfind("sec-websocket-extensions", 1, Headers),
+ %% The handler receives a compressed "Hello" frame and
+ %% sends back a compressed or uncompressed echo intermittently.
+ Mask = 16#11223344,
+ CompressedHello = <<242, 72, 205, 201, 201, 7, 0>>,
+ MaskedHello = ws_SUITE:do_mask(CompressedHello, Mask, <<>>),
+ %% First echo is compressed.
+ ok = gen_tcp:send(Socket, <<1:1, 1:1, 0:2, 1:4, 1:1, 7:7, Mask:32, MaskedHello/binary>>),
+ {ok, <<1:1, 1:1, 0:2, 1:4, 0:1, 7:7, CompressedHello/binary>>} = gen_tcp:recv(Socket, 0, 6000),
+ %% Second echo is not compressed when it is received back.
+ ok = gen_tcp:send(Socket, <<1:1, 1:1, 0:2, 1:4, 1:1, 7:7, Mask:32, MaskedHello/binary>>),
+ {ok, <<1:1, 0:3, 1:4, 0:1, 5:7, "Hello">>} = gen_tcp:recv(Socket, 0, 6000),
+ %% Third echo is compressed again.
+ ok = gen_tcp:send(Socket, <<1:1, 1:1, 0:2, 1:4, 1:1, 7:7, Mask:32, MaskedHello/binary>>),
+ {ok, <<1:1, 1:1, 0:2, 1:4, 0:1, 7:7, CompressedHello/binary>>} = gen_tcp:recv(Socket, 0, 6000),
+ %% Client-initiated close.
+ ok = gen_tcp:send(Socket, << 1:1, 0:3, 8:4, 1:1, 0:7, 0:32 >>),
+ {ok, << 1:1, 0:3, 8:4, 0:8 >>} = gen_tcp:recv(Socket, 0, 6000),
+ {error, closed} = gen_tcp:recv(Socket, 0, 6000),
+ ok.
+
+websocket_deflate_ignore_if_not_negotiated(Config) ->
+ doc("The {deflate, boolean()} commands are ignored "
+ "when compression was not negotiated."),
+ {ok, ConnPid, StreamRef} = gun_open_ws(Config, "/deflate", []),
+ _ = [begin
+ gun:ws_send(ConnPid, {text, <<"Hello.">>}),
+ {ok, {text, <<"Hello.">>}} = receive_ws(ConnPid, StreamRef)
+ end || _ <- lists:seq(1, 10)],
+ ok.