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%% This module sends a response body of varying sizes to test
%% the cowboy_compress_h stream handler.
-module(compress_h).
-export([init/2]).
init(Req0, State=reply) ->
Req = case cowboy_req:binding(what, Req0) of
<<"small">> ->
cowboy_req:reply(200, #{}, lists:duplicate(100, $a), Req0);
<<"large">> ->
cowboy_req:reply(200, #{}, lists:duplicate(100000, $a), Req0);
<<"over-threshold">> ->
cowboy_req:reply(200, #{}, lists:duplicate(200, $a), Req0);
<<"content-encoding">> ->
cowboy_req:reply(200, #{<<"content-encoding">> => <<"compress">>},
lists:duplicate(100000, $a), Req0);
<<"sendfile">> ->
AppFile = code:where_is_file("cowboy.app"),
Size = filelib:file_size(AppFile),
cowboy_req:reply(200, #{}, {sendfile, 0, Size, AppFile}, Req0)
end,
{ok, Req, State};
init(Req0, State=stream_reply) ->
Req = case cowboy_req:binding(what, Req0) of
<<"large">> ->
stream_reply(#{}, Req0);
<<"content-encoding">> ->
stream_reply(#{<<"content-encoding">> => <<"compress">>}, Req0);
<<"sendfile">> ->
Data = lists:duplicate(10000, $a),
AppFile = code:where_is_file("cowboy.app"),
Size = filelib:file_size(AppFile),
Req1 = cowboy_req:stream_reply(200, Req0),
%% We send a few files interspersed into other data.
cowboy_req:stream_body(Data, nofin, Req1),
cowboy_req:stream_body({sendfile, 0, Size, AppFile}, nofin, Req1),
cowboy_req:stream_body(Data, nofin, Req1),
cowboy_req:stream_body({sendfile, 0, Size, AppFile}, nofin, Req1),
cowboy_req:stream_body(Data, fin, Req1),
Req1;
<<"sendfile_fin">> ->
Data = lists:duplicate(10000, $a),
AppFile = code:where_is_file("cowboy.app"),
Size = filelib:file_size(AppFile),
Req1 = cowboy_req:stream_reply(200, Req0),
%% We send a few files interspersed into other data.
cowboy_req:stream_body(Data, nofin, Req1),
cowboy_req:stream_body({sendfile, 0, Size, AppFile}, nofin, Req1),
cowboy_req:stream_body(Data, nofin, Req1),
cowboy_req:stream_body({sendfile, 0, Size, AppFile}, fin, Req1),
Req1
end,
{ok, Req, State}.
stream_reply(Headers, Req0) ->
Data = lists:duplicate(10000, $a),
Req = cowboy_req:stream_reply(200, Headers, Req0),
_ = [cowboy_req:stream_body(Data, nofin, Req) || _ <- lists:seq(1,9)],
cowboy_req:stream_body(Data, fin, Req),
Req.
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