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Previously if a loop handler received the timeout message from a previous request on the same connection the socket would be set to {active, once} incorrectly - when a socket packet was already in the message queue. This second packet would not be added to the buffer before a Handler:info/3 call if a user message was in the message queue before both socket packets.
41 lines
864 B
Erlang
41 lines
864 B
Erlang
%% Feel free to use, reuse and abuse the code in this file.
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-module(http_loop_stream_recv).
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-export([init/3]).
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-export([info/3]).
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-export([terminate/3]).
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init({_, http}, Req, _) ->
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receive after 100 -> ok end,
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self() ! stream,
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{loop, Req, 1, 100}.
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info(stream, Req, Id) ->
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case stream_next(Req) of
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{ok, Id, Req2} ->
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info(stream, Req2, Id+1);
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{done, Req2} ->
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{ok, Req3} = cowboy_req:reply(200, Req2),
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{ok, Req3, Id}
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end.
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terminate({normal, shutdown}, _, _) ->
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ok.
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stream_next(Req) ->
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stream_next(<<>>, Req).
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stream_next(Buffer, Req) ->
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case cowboy_req:stream_body(Req) of
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{ok, Packet, Req2} ->
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case <<Buffer/binary, Packet/binary>> of
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<<Id:32>> ->
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{ok, Id, Req2};
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Buffer2 when byte_size(Buffer2) < 4 ->
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stream_next(Buffer2, Req2);
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_InvalidBuffer ->
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{error, invalid_chunk}
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end;
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Other ->
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Other
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end.
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