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-rw-r--r--src/cowboy_websocket.erl8
1 files changed, 6 insertions, 2 deletions
diff --git a/src/cowboy_websocket.erl b/src/cowboy_websocket.erl
index 3ec9f9a..d38c673 100644
--- a/src/cowboy_websocket.erl
+++ b/src/cowboy_websocket.erl
@@ -144,23 +144,27 @@ websocket_extensions(State=#state{extensions=Extensions}, Req=#{pid := Pid},
[{<<"permessage-deflate">>, Params}|Tail], RespHeader) ->
%% @todo Make deflate options configurable.
Opts = #{level => best_compression, mem_level => 8, strategy => default},
- case cow_ws:negotiate_permessage_deflate(Params, Extensions, Opts#{owner => Pid}) of
+ try cow_ws:negotiate_permessage_deflate(Params, Extensions, Opts#{owner => Pid}) of
{ok, RespExt, Extensions2} ->
websocket_extensions(State#state{extensions=Extensions2},
Req, Tail, [<<", ">>, RespExt|RespHeader]);
ignore ->
websocket_extensions(State, Req, Tail, RespHeader)
+ catch exit:{error, incompatible_zlib_version, _} ->
+ websocket_extensions(State, Req, Tail, RespHeader)
end;
websocket_extensions(State=#state{extensions=Extensions}, Req=#{pid := Pid},
[{<<"x-webkit-deflate-frame">>, Params}|Tail], RespHeader) ->
%% @todo Make deflate options configurable.
Opts = #{level => best_compression, mem_level => 8, strategy => default},
- case cow_ws:negotiate_x_webkit_deflate_frame(Params, Extensions, Opts#{owner => Pid}) of
+ try cow_ws:negotiate_x_webkit_deflate_frame(Params, Extensions, Opts#{owner => Pid}) of
{ok, RespExt, Extensions2} ->
websocket_extensions(State#state{extensions=Extensions2},
Req, Tail, [<<", ">>, RespExt|RespHeader]);
ignore ->
websocket_extensions(State, Req, Tail, RespHeader)
+ catch exit:{error, incompatible_zlib_version, _} ->
+ websocket_extensions(State, Req, Tail, RespHeader)
end;
websocket_extensions(State, Req, [_|Tail], RespHeader) ->
websocket_extensions(State, Req, Tail, RespHeader).