27 lines
626 B
Erlang
27 lines
626 B
Erlang
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-module(active_echo_protocol).
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-behaviour(ranch_protocol).
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-export([start_link/3]).
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-export([init/3]).
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start_link(Ref, Transport, Opts) ->
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Pid = spawn_link(?MODULE, init, [Ref, Transport, Opts]),
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{ok, Pid}.
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init(Ref, Transport, _Opts = []) ->
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{ok, Socket} = ranch:handshake(Ref),
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loop(Socket, Transport).
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loop(Socket, Transport) ->
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{OK, Closed, Error, _Passive} = Transport:messages(),
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Transport:setopts(Socket, [{active, once}]),
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receive
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{OK, Socket, Data} ->
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Transport:send(Socket, Data),
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loop(Socket, Transport);
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{Closed, Socket} ->
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ok;
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{Error, Socket, _} ->
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ok = Transport:close(Socket)
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end.
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