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Add hibernate option to cowboy_http and cowboy_http2

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When enabled the connection process will automatically hibernate.
Because hibernation triggers GC, this can be used as a way to
keep memory usage lower, at the cost of performance.
This commit is contained in:
Loïc Hoguin 2025-02-07 16:57:58 +01:00
parent d3f6bda38b
commit 0f257d06b6
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GPG key ID: 8A9DF795F6FED764
6 changed files with 103 additions and 33 deletions
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21
test/http2_SUITE.erl
View file

@ -51,6 +51,27 @@ do_handshake(Settings, Config) ->
{ok, << 0:24, 4:8, 1:8, 0:32 >>} = gen_tcp:recv(Socket, 9, 1000),
{ok, Socket}.
hibernate(Config) ->
doc("Ensure that we can enable hibernation for HTTP/1.1 connections."),
{ok, _} = cowboy:start_clear(?FUNCTION_NAME, [{port, 0}], #{
env => #{dispatch => init_dispatch(Config)},
hibernate => true
}),
Port = ranch:get_port(?FUNCTION_NAME),
try
ConnPid = gun_open([{type, tcp}, {protocol, http2}, {port, Port}|Config]),
{ok, http2} = gun:await_up(ConnPid),
StreamRef1 = gun:get(ConnPid, "/"),
StreamRef2 = gun:get(ConnPid, "/"),
StreamRef3 = gun:get(ConnPid, "/"),
{response, nofin, 200, _} = gun:await(ConnPid, StreamRef1),
{response, nofin, 200, _} = gun:await(ConnPid, StreamRef2),
{response, nofin, 200, _} = gun:await(ConnPid, StreamRef3),
gun:close(ConnPid)
after
cowboy:stop_listener(?FUNCTION_NAME)
end.
idle_timeout(Config) ->
doc("Terminate when the idle timeout is reached."),
ProtoOpts = #{

21
test/http_SUITE.erl
View file

@ -199,6 +199,27 @@ do_chunked_body(ChunkSize0, Data, Acc) ->
do_chunked_body(ChunkSize, Rest,
[iolist_to_binary(cow_http_te:chunk(Chunk))|Acc]).
hibernate(Config) ->
doc("Ensure that we can enable hibernation for HTTP/1.1 connections."),
{ok, _} = cowboy:start_clear(?FUNCTION_NAME, [{port, 0}], #{
env => #{dispatch => init_dispatch(Config)},
hibernate => true
}),
Port = ranch:get_port(?FUNCTION_NAME),
try
ConnPid = gun_open([{type, tcp}, {protocol, http}, {port, Port}|Config]),
{ok, http} = gun:await_up(ConnPid),
StreamRef1 = gun:get(ConnPid, "/"),
StreamRef2 = gun:get(ConnPid, "/"),
StreamRef3 = gun:get(ConnPid, "/"),
{response, nofin, 200, _} = gun:await(ConnPid, StreamRef1),
{response, nofin, 200, _} = gun:await(ConnPid, StreamRef2),
{response, nofin, 200, _} = gun:await(ConnPid, StreamRef3),
gun:close(ConnPid)
after
cowboy:stop_listener(?FUNCTION_NAME)
end.
http10_keepalive_false(Config) ->
doc("Confirm the option http10_keepalive => false disables keep-alive "
"completely for HTTP/1.0 connections."),