33 lines
866 B
Erlang
33 lines
866 B
Erlang
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-module(handshake_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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SniHost = case ranch:handshake(Ref) of
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%% Due to a bug in ssl (https://bugs.erlang.org/browse/ERL-951,
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%% fixed in OTP 22.0.3) the value for sni may be {sni, Hostname}
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%% instead of Hostname.
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{continue, #{sni := {sni, Hostname}}} ->
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Hostname;
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{continue, #{sni := Hostname}} ->
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Hostname
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end,
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SniHostOpts = maps:get(SniHost, Opts),
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{ok, Socket} = ranch:handshake_continue(Ref, SniHostOpts),
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loop(Socket, Transport).
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loop(Socket, Transport) ->
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case Transport:recv(Socket, 0, 5000) of
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{ok, Data} ->
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Transport:send(Socket, Data),
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loop(Socket, Transport);
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_ ->
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ok = Transport:close(Socket)
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end.
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