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authorLoïc Hoguin <[email protected]>2018-11-12 18:12:44 +0100
committerLoïc Hoguin <[email protected]>2018-11-12 18:12:44 +0100
commit8164b504534e932df24adb65c5e15ed8d8a9feea (patch)
treefc3ad0e0b7037965b5cf1fbe43d70ebe41cc5910 /test/ws_SUITE.erl
parentfe1ee080de40ee6fd41e17bd71507fefe83f5f3c (diff)
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Add deflate options for Websocket compression
They allow the server to configure what it is willing to accept for both the negotiated configuration (takeover and window bits) and the other zlib options (level, mem_level and strategy). This can be used to reduce the memory and/or CPU footprint of the compressed data, which comes with a cost in compression ratio.
Diffstat (limited to 'test/ws_SUITE.erl')
-rw-r--r--test/ws_SUITE.erl120
1 files changed, 119 insertions, 1 deletions
diff --git a/test/ws_SUITE.erl b/test/ws_SUITE.erl
index 284d571..af1be05 100644
--- a/test/ws_SUITE.erl
+++ b/test/ws_SUITE.erl
@@ -83,7 +83,8 @@ init_dispatch() ->
{"/terminate", ws_terminate_h, []},
{"/ws_timeout_hibernate", ws_timeout_hibernate, []},
{"/ws_timeout_cancel", ws_timeout_cancel, []},
- {"/ws_max_frame_size", ws_max_frame_size, []}
+ {"/ws_max_frame_size", ws_max_frame_size, []},
+ {"/ws_deflate_opts", ws_deflate_opts_h, []}
]}
]).
@@ -231,6 +232,123 @@ do_ws_version(Socket) ->
{error, closed} = gen_tcp:recv(Socket, 0, 6000),
ok.
+ws_deflate_opts_client_context_takeover(Config) ->
+ doc("Handler is configured with client context takeover enabled."),
+ {ok, _, Headers1} = do_handshake("/ws_deflate_opts?client_context_takeover",
+ "Sec-WebSocket-Extensions: permessage-deflate\r\n", Config),
+ {_, "permessage-deflate"}
+ = lists:keyfind("sec-websocket-extensions", 1, Headers1),
+ {ok, _, Headers2} = do_handshake("/ws_deflate_opts?client_context_takeover",
+ "Sec-WebSocket-Extensions: permessage-deflate; client_no_context_takeover\r\n", Config),
+ {_, "permessage-deflate; client_no_context_takeover"}
+ = lists:keyfind("sec-websocket-extensions", 1, Headers2),
+ ok.
+
+ws_deflate_opts_client_no_context_takeover(Config) ->
+ doc("Handler is configured with client context takeover disabled."),
+ {ok, _, Headers1} = do_handshake("/ws_deflate_opts?client_no_context_takeover",
+ "Sec-WebSocket-Extensions: permessage-deflate\r\n", Config),
+ {_, "permessage-deflate; client_no_context_takeover"}
+ = lists:keyfind("sec-websocket-extensions", 1, Headers1),
+ {ok, _, Headers2} = do_handshake("/ws_deflate_opts?client_no_context_takeover",
+ "Sec-WebSocket-Extensions: permessage-deflate; client_no_context_takeover\r\n", Config),
+ {_, "permessage-deflate; client_no_context_takeover"}
+ = lists:keyfind("sec-websocket-extensions", 1, Headers2),
+ ok.
+
+%% We must send client_max_window_bits to indicate we support it.
+ws_deflate_opts_client_max_window_bits(Config) ->
+ doc("Handler is configured with client max window bits."),
+ {ok, _, Headers} = do_handshake("/ws_deflate_opts?client_max_window_bits",
+ "Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits\r\n", Config),
+ {_, "permessage-deflate; client_max_window_bits=9"}
+ = lists:keyfind("sec-websocket-extensions", 1, Headers),
+ ok.
+
+ws_deflate_opts_client_max_window_bits_override(Config) ->
+ doc("Handler is configured with client max window bits."),
+ {ok, _, Headers1} = do_handshake("/ws_deflate_opts?client_max_window_bits",
+ "Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits=8\r\n", Config),
+ {_, "permessage-deflate; client_max_window_bits=8"}
+ = lists:keyfind("sec-websocket-extensions", 1, Headers1),
+ {ok, _, Headers2} = do_handshake("/ws_deflate_opts?client_max_window_bits",
+ "Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits=12\r\n", Config),
+ {_, "permessage-deflate; client_max_window_bits=9"}
+ = lists:keyfind("sec-websocket-extensions", 1, Headers2),
+ ok.
+
+ws_deflate_opts_server_context_takeover(Config) ->
+ doc("Handler is configured with server context takeover enabled."),
+ {ok, _, Headers1} = do_handshake("/ws_deflate_opts?server_context_takeover",
+ "Sec-WebSocket-Extensions: permessage-deflate\r\n", Config),
+ {_, "permessage-deflate"}
+ = lists:keyfind("sec-websocket-extensions", 1, Headers1),
+ {ok, _, Headers2} = do_handshake("/ws_deflate_opts?server_context_takeover",
+ "Sec-WebSocket-Extensions: permessage-deflate; server_no_context_takeover\r\n", Config),
+ {_, "permessage-deflate; server_no_context_takeover"}
+ = lists:keyfind("sec-websocket-extensions", 1, Headers2),
+ ok.
+
+ws_deflate_opts_server_no_context_takeover(Config) ->
+ doc("Handler is configured with server context takeover disabled."),
+ {ok, _, Headers1} = do_handshake("/ws_deflate_opts?server_no_context_takeover",
+ "Sec-WebSocket-Extensions: permessage-deflate\r\n", Config),
+ {_, "permessage-deflate; server_no_context_takeover"}
+ = lists:keyfind("sec-websocket-extensions", 1, Headers1),
+ {ok, _, Headers2} = do_handshake("/ws_deflate_opts?server_no_context_takeover",
+ "Sec-WebSocket-Extensions: permessage-deflate; server_no_context_takeover\r\n", Config),
+ {_, "permessage-deflate; server_no_context_takeover"}
+ = lists:keyfind("sec-websocket-extensions", 1, Headers2),
+ ok.
+
+ws_deflate_opts_server_max_window_bits(Config) ->
+ doc("Handler is configured with server max window bits."),
+ {ok, _, Headers} = do_handshake("/ws_deflate_opts?server_max_window_bits",
+ "Sec-WebSocket-Extensions: permessage-deflate\r\n", Config),
+ {_, "permessage-deflate; server_max_window_bits=9"}
+ = lists:keyfind("sec-websocket-extensions", 1, Headers),
+ ok.
+
+ws_deflate_opts_server_max_window_bits_override(Config) ->
+ doc("Handler is configured with server max window bits."),
+ {ok, _, Headers1} = do_handshake("/ws_deflate_opts?server_max_window_bits",
+ "Sec-WebSocket-Extensions: permessage-deflate; server_max_window_bits=8\r\n", Config),
+ {_, "permessage-deflate; server_max_window_bits=8"}
+ = lists:keyfind("sec-websocket-extensions", 1, Headers1),
+ {ok, _, Headers2} = do_handshake("/ws_deflate_opts?server_max_window_bits",
+ "Sec-WebSocket-Extensions: permessage-deflate; server_max_window_bits=12\r\n", Config),
+ {_, "permessage-deflate; server_max_window_bits=9"}
+ = lists:keyfind("sec-websocket-extensions", 1, Headers2),
+ ok.
+
+ws_deflate_opts_zlevel(Config) ->
+ doc("Handler is configured with zlib level."),
+ do_ws_deflate_opts_z("/ws_deflate_opts?level", Config).
+
+ws_deflate_opts_zmemlevel(Config) ->
+ doc("Handler is configured with zlib mem_level."),
+ do_ws_deflate_opts_z("/ws_deflate_opts?mem_level", Config).
+
+ws_deflate_opts_zstrategy(Config) ->
+ doc("Handler is configured with zlib strategy."),
+ do_ws_deflate_opts_z("/ws_deflate_opts?strategy", Config).
+
+do_ws_deflate_opts_z(Path, Config) ->
+ {ok, Socket, Headers} = do_handshake(Path,
+ "Sec-WebSocket-Extensions: permessage-deflate\r\n", Config),
+ {_, "permessage-deflate"} = lists:keyfind("sec-websocket-extensions", 1, Headers),
+ %% Send and receive a compressed "Hello" frame.
+ Mask = 16#11223344,
+ CompressedHello = << 242, 72, 205, 201, 201, 7, 0 >>,
+ MaskedHello = do_mask(CompressedHello, Mask, <<>>),
+ 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.
+
ws_init_return_ok(Config) ->
doc("Handler does nothing."),
{ok, Socket, _} = do_handshake("/ws_init?ok", Config),