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52 lines
1.2 KiB
Erlang
52 lines
1.2 KiB
Erlang
%% This module is used to test the flushing of messages when
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%% switch_protocol is executed by cowboy_http.
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-module(switch_protocol_flush_h).
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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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-export([takeover/7]).
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-export([validate/1]).
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init(StreamID, Req, _) ->
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Pid = list_to_pid(binary_to_list(cowboy_req:header(<<"x-test-pid">>, Req))),
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%% Send ourselves a few messages that may or may not be flushed.
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self() ! good,
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self() ! {'EXIT', Pid, normal},
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self() ! {system, a, b},
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self() ! {{self(), StreamID}, hello},
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self() ! {'$gen_call', a, b},
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self() ! {timeout, make_ref(), ?MODULE},
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self() ! {ranch_tcp, socket, <<"123">>},
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{[{switch_protocol, #{}, ?MODULE, Pid}], undefined}.
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info(_, _, State) ->
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{[], State}.
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terminate(_, _, _) ->
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ok.
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%% @todo It would be good if we could allow this function to return normally.
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-spec takeover(_, _, _, _, _, _, _) -> no_return().
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takeover(_, _, _, _, _, _, Pid) ->
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Msgs = receive_all([]),
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Pid ! {Pid, Msgs},
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exit(normal).
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receive_all(Acc) ->
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receive
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Msg ->
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receive_all([Msg|Acc])
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after 0 ->
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Acc
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end.
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validate(Msgs) ->
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[
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{ranch_tcp, socket, <<"123">>},
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{'$gen_call', a, b},
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{system, a, b},
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good
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] = Msgs,
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ok.
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