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authorLoïc Hoguin <[email protected]>2012-08-27 11:50:35 +0200
committerLoïc Hoguin <[email protected]>2012-08-27 11:50:35 +0200
commite4124de2c71564d37b3732ede0fe1542de1d6f99 (patch)
tree0e632d9eb44c848bfc4b9190251e7c8566c8debc /src/cowboy.erl
parent50e5a616dcaa765f0c795f565d361196823ed2fe (diff)
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Switch to Ranch for connection handling
This is the first of many API incompatible changes. You have been warned.
Diffstat (limited to 'src/cowboy.erl')
-rw-r--r--src/cowboy.erl119
1 files changed, 22 insertions, 97 deletions
diff --git a/src/cowboy.erl b/src/cowboy.erl
index 6ef415b..94cae16 100644
--- a/src/cowboy.erl
+++ b/src/cowboy.erl
@@ -12,103 +12,28 @@
%% ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
%% OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-%% @doc Cowboy API to start and stop listeners.
+%% @doc Convenience API to start and stop HTTP/HTTPS listeners.
-module(cowboy).
--export([start_listener/6, stop_listener/1, child_spec/6, accept_ack/1,
- get_protocol_options/1, set_protocol_options/2]).
-
-%% @doc Start a listener for the given transport and protocol.
-%%
-%% A listener is effectively a pool of <em>NbAcceptors</em> acceptors.
-%% Acceptors accept connections on the given <em>Transport</em> and forward
-%% requests to the given <em>Protocol</em> handler. Both transport and protocol
-%% modules can be given options through the <em>TransOpts</em> and the
-%% <em>ProtoOpts</em> arguments. Available options are documented in the
-%% <em>listen</em> transport function and in the protocol module of your choice.
-%%
-%% All acceptor and request processes are supervised by the listener.
-%%
-%% It is recommended to set a large enough number of acceptors to improve
-%% performance. The exact number depends of course on your hardware, on the
-%% protocol used and on the number of expected simultaneous connections.
-%%
-%% The <em>Transport</em> option <em>max_connections</em> allows you to define
-%% the maximum number of simultaneous connections for this listener. It defaults
-%% to 1024. See <em>cowboy_listener</em> for more details on limiting the number
-%% of connections.
-%%
-%% Although Cowboy includes a <em>cowboy_http_protocol</em> handler, other
-%% handlers can be created for different protocols like IRC, FTP and more.
-%%
-%% <em>Ref</em> can be used to stop the listener later on.
--spec start_listener(any(), non_neg_integer(), module(), any(), module(), any())
- -> {ok, pid()}.
-start_listener(Ref, NbAcceptors, Transport, TransOpts, Protocol, ProtoOpts)
- when is_integer(NbAcceptors) andalso is_atom(Transport)
- andalso is_atom(Protocol) ->
- supervisor:start_child(cowboy_sup, child_spec(Ref, NbAcceptors,
- Transport, TransOpts, Protocol, ProtoOpts)).
-
-%% @doc Stop a listener identified by <em>Ref</em>.
--spec stop_listener(any()) -> ok | {error, not_found}.
+-export([start_http/4]).
+-export([start_https/4]).
+-export([stop_listener/1]).
+
+%% @doc Start an HTTP listener.
+-spec start_http(any(), non_neg_integer(), any(), any()) -> {ok, pid()}.
+start_http(Ref, NbAcceptors, TransOpts, ProtoOpts)
+ when is_integer(NbAcceptors), NbAcceptors > 0 ->
+ ranch:start_listener(Ref, NbAcceptors,
+ ranch_tcp, TransOpts, cowboy_http_protocol, ProtoOpts).
+
+%% @doc Start an HTTPS listener.
+-spec start_https(any(), non_neg_integer(), any(), any()) -> {ok, pid()}.
+start_https(Ref, NbAcceptors, TransOpts, ProtoOpts)
+ when is_integer(NbAcceptors), NbAcceptors > 0 ->
+ ranch:start_listener(Ref, NbAcceptors,
+ ranch_ssl, TransOpts, cowboy_http_protocol, ProtoOpts).
+
+%% @doc Stop a listener.
+-spec stop_listener(any()) -> ok.
stop_listener(Ref) ->
- case supervisor:terminate_child(cowboy_sup, {cowboy_listener_sup, Ref}) of
- ok ->
- supervisor:delete_child(cowboy_sup, {cowboy_listener_sup, Ref});
- {error, Reason} ->
- {error, Reason}
- end.
-
-%% @doc Return a child spec suitable for embedding.
-%%
-%% When you want to embed cowboy in another application, you can use this
-%% function to create a <em>ChildSpec</em> suitable for use in a supervisor.
-%% The parameters are the same as in <em>start_listener/6</em> but rather
-%% than hooking the listener to the cowboy internal supervisor, it just returns
-%% the spec.
--spec child_spec(any(), non_neg_integer(), module(), any(), module(), any())
- -> supervisor:child_spec().
-child_spec(Ref, NbAcceptors, Transport, TransOpts, Protocol, ProtoOpts)
- when is_integer(NbAcceptors) andalso is_atom(Transport)
- andalso is_atom(Protocol) ->
- {{cowboy_listener_sup, Ref}, {cowboy_listener_sup, start_link, [
- NbAcceptors, Transport, TransOpts, Protocol, ProtoOpts
- ]}, permanent, 5000, supervisor, [cowboy_listener_sup]}.
-
-%% @doc Acknowledge the accepted connection.
-%%
-%% Effectively used to make sure the socket control has been given to
-%% the protocol process before starting to use it.
--spec accept_ack(pid()) -> ok.
-accept_ack(ListenerPid) ->
- receive {shoot, ListenerPid} -> ok end.
-
-%% @doc Return the current protocol options for the given listener.
--spec get_protocol_options(any()) -> any().
-get_protocol_options(Ref) ->
- ListenerPid = ref_to_listener_pid(Ref),
- {ok, ProtoOpts} = cowboy_listener:get_protocol_options(ListenerPid),
- ProtoOpts.
-
-%% @doc Upgrade the protocol options for the given listener.
-%%
-%% The upgrade takes place at the acceptor level, meaning that only the
-%% newly accepted connections receive the new protocol options. This has
-%% no effect on the currently opened connections.
--spec set_protocol_options(any(), any()) -> ok.
-set_protocol_options(Ref, ProtoOpts) ->
- ListenerPid = ref_to_listener_pid(Ref),
- ok = cowboy_listener:set_protocol_options(ListenerPid, ProtoOpts).
-
-%% Internal.
-
--spec ref_to_listener_pid(any()) -> pid().
-ref_to_listener_pid(Ref) ->
- Children = supervisor:which_children(cowboy_sup),
- {_, ListenerSupPid, _, _} = lists:keyfind(
- {cowboy_listener_sup, Ref}, 1, Children),
- ListenerSupChildren = supervisor:which_children(ListenerSupPid),
- {_, ListenerPid, _, _} = lists:keyfind(
- cowboy_listener, 1, ListenerSupChildren),
- ListenerPid.
+ ranch:stop_listener(Ref).