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40b8d0befc
We now read from the socket to be able to detect errors or TCP close
events, and buffer the data if any. Once the data receive goes over
a certain limit, which defaults to 5000 bytes, we simply close the
connection with an {error, overflow} reason.
24 lines
616 B
Erlang
24 lines
616 B
Erlang
%% Feel free to use, reuse and abuse the code in this file.
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-module(http_handler_long_polling).
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-behaviour(cowboy_http_handler).
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-export([init/3, handle/2, info/3, terminate/3]).
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init({_Transport, http}, Req, _Opts) ->
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erlang:send_after(500, self(), timeout),
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{loop, Req, 5, 5000, hibernate}.
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handle(_Req, _State) ->
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exit(badarg).
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info(timeout, Req, 0) ->
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{ok, Req2} = cowboy_req:reply(102, Req),
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{ok, Req2, 0};
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info(timeout, Req, State) ->
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erlang:send_after(500, self(), timeout),
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{loop, Req, State - 1, hibernate}.
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terminate({normal, shutdown}, _, _) ->
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ok;
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terminate({error, overflow}, _, _) ->
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ok.
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