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21 lines
834 B
Erlang
21 lines
834 B
Erlang
%% Feel free to use, reuse and abuse the code in this file.
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-module(error_hook_responder).
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-export([respond/4]).
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respond(404, Headers, <<>>, Req) ->
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{Path, Req2} = cowboy_req:path(Req),
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Body = <<"404 Not Found: \"", Path/binary, "\" is not the path you are looking for.\n">>,
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Headers2 = lists:keyreplace(<<"content-length">>, 1, Headers,
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{<<"content-length">>, integer_to_list(byte_size(Body))}),
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{ok, Req3} = cowboy_req:reply(404, Headers2, Body, Req2),
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Req3;
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respond(Code, Headers, <<>>, Req) when is_integer(Code), Code >= 400 ->
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Body = ["HTTP Error ", integer_to_list(Code), $\n],
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Headers2 = lists:keyreplace(<<"content-length">>, 1, Headers,
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{<<"content-length">>, integer_to_list(iolist_size(Body))}),
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{ok, Req2} = cowboy_req:reply(Code, Headers2, Body, Req),
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Req2;
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respond(_Code, _Headers, _Body, Req) ->
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Req.
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