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%% This module echoes a request body of to test
%% the cowboy_decompress_h stream handler.
-module(decompress_h).
-export([init/2]).
init(Req0, State=[]) ->
case cowboy_req:binding(what, Req0) of
<<"decompress_ignore">> ->
cowboy_req:cast({set_options, #{decompress_ignore => true}}, Req0);
<<"decompress_ratio_limit">> ->
cowboy_req:cast({set_options, #{decompress_ratio_limit => 0.5}}, Req0);
<<"normal">> -> ok
end,
{ok, Body, Req1} = read_body(Req0),
Req = cowboy_req:reply(200, #{}, Body, Req1),
{ok, Req, State};
init(Req0, State=header_command) ->
{ok, Body, Req1} = read_body(Req0),
Req2 = cowboy_req:stream_reply(200, #{}, Req1),
Req = cowboy_req:stream_body(Body, fin, Req2),
{ok, Req, State};
init(Req0, State=accept_identity) ->
{ok, Body, Req1} = read_body(Req0),
Req = cowboy_req:reply(200, #{<<"accept-encoding">> => <<"identity">>}, Body, Req1),
{ok, Req, State};
init(Req0, State=invalid_header) ->
{ok, Body, Req1} = read_body(Req0),
Req = cowboy_req:reply(200, #{<<"accept-encoding">> => <<";">>}, Body, Req1),
{ok, Req, State};
init(Req0, State=reject_explicit_header) ->
{ok, Body, Req1} = read_body(Req0),
Req = cowboy_req:reply(200, #{<<"accept-encoding">> => <<"identity, gzip;q=0">>},
Body, Req1),
{ok, Req, State};
init(Req0, State=reject_implicit_header) ->
{ok, Body, Req1} = read_body(Req0),
Req = cowboy_req:reply(200, #{<<"accept-encoding">> => <<"identity, *;q=0">>},
Body, Req1),
{ok, Req, State};
init(Req0, State=accept_explicit_header) ->
{ok, Body, Req1} = read_body(Req0),
Req = cowboy_req:reply(200, #{<<"accept-encoding">> => <<"identity, gzip;q=0.5">>},
Body, Req1),
{ok, Req, State};
init(Req0, State=accept_implicit_header) ->
{ok, Body, Req1} = read_body(Req0),
Req = cowboy_req:reply(200, #{<<"accept-encoding">> => <<"identity, *;q=0.5">>},
Body, Req1),
{ok, Req, State}.
read_body(Req0) ->
{Status, Data, Req} = cowboy_req:read_body(Req0, #{length => 1000}),
do_read_body(Status, Req, Data).
do_read_body(more, Req0, Acc) ->
{Status, Data, Req} = cowboy_req:read_body(Req0),
do_read_body(Status, Req, << Acc/binary, Data/binary >>);
do_read_body(ok, Req, Acc) ->
{ok, Acc, Req}.
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