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c1490d7d55
While we are identified as a supervisor in the tree, we no longer manage children processes at that point, so do not need to trap exit signals. Users can still enable trap_exit if they prefer to.
48 lines
1.5 KiB
Erlang
48 lines
1.5 KiB
Erlang
%% This module returns a different value in websocket_init/1 depending on the query string.
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-module(ws_init_h).
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-behavior(cowboy_websocket).
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-export([init/2]).
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-export([websocket_init/1]).
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-export([websocket_handle/2]).
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-export([websocket_info/2]).
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init(Req, _) ->
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State = binary_to_atom(cowboy_req:qs(Req), latin1),
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{cowboy_websocket, Req, State}.
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%% Sleep to make sure the HTTP response was sent.
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websocket_init(State) ->
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timer:sleep(100),
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do_websocket_init(State).
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do_websocket_init(State=ok) ->
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{[], State};
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do_websocket_init(State=ok_hibernate) ->
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{[], State, hibernate};
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do_websocket_init(State=reply) ->
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{[{text, "Hello"}], State};
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do_websocket_init(State=reply_hibernate) ->
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{[{text, "Hello"}], State, hibernate};
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do_websocket_init(State=reply_close) ->
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{[close], State};
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do_websocket_init(State=reply_close_hibernate) ->
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{[close], State, hibernate};
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do_websocket_init(State=reply_many) ->
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{[{text, "Hello"}, {binary, "World"}], State};
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do_websocket_init(State=reply_many_hibernate) ->
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{[{text, "Hello"}, {binary, "World"}], State, hibernate};
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do_websocket_init(State=reply_many_close) ->
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{[{text, "Hello"}, close], State};
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do_websocket_init(State=reply_many_close_hibernate) ->
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{[{text, "Hello"}, close], State, hibernate};
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do_websocket_init(State=reply_trap_exit) ->
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Text = "trap_exit: " ++ atom_to_list(element(2, process_info(self(), trap_exit))),
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{[{text, Text}, close], State, hibernate}.
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websocket_handle(_, State) ->
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{[], State}.
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websocket_info(_, State) ->
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{[], State}.
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