68 lines
2 KiB
Erlang
68 lines
2 KiB
Erlang
-module(ggs_dispatcher).
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-behaviour(gen_server).
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%% API Exports
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-export([start_link/1, stop/1]).
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%% gen_server callback exports
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-export([init/1, handle_call/3, handle_cast/2, handle_info/2, terminate/2,
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code_change/3]).
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-define(SERVER, ?MODULE).
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%% @doc This module is the entry-point for clients connecting to GGS. This is
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%% the module responsible for:
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%% * Greeting a connecting client, and associating a socket for it
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%% * Spawning a ggs_player for the connecting client, passing the socket
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%% @doc Starts a new dispatcher with the specified port. Registers this
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%% dispatcher under the name "ggs_dispatcher". The pid of the dispatcher
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%% is returned.
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%% @spec start_link(Port) -> Pid
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%% Port = Integer
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%% Pid = #<Pid>
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start_link(Port) ->
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gen_server:start_link({local, ?SERVER}, ?MODULE, [Port], []).
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%% @doc Stops the dispatcher with the specified reason.
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%% @spec stop(Reason) -> ok.
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%% Reason = String
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stop(_Reason) -> ggs_logger:not_implemented().
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%% gen_server callbacks
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%% @doc Initiate the dispatcher. This is called from gen_server
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init([Port]) ->
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{ok, LSock} = gen_tcp:listen(Port, [{active, true},
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{reuseaddr, true}]),
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{ok, LSock, 0}.
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handle_call(_Message, _From, State) ->
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{noreply, State}.
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handle_cast(_Message, State) ->
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{noreply, State}.
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handle_info({tcp, _Socket, RawData}, State) ->
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io:format("Got connect request!~n"),
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{noreply, State};
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handle_info({tcp_closed, Socket}, State) ->
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gen_tcp:close(Socket),
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{stop, "Client closed socket", State};
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%% @doc This is our function for accepting connections. When a client connects,
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%% it will immediately time out due to timing settings set in init and here,
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%% and when it does, we accept the connection.
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handle_info(timeout, LSock) ->
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{ok, Sock} = gen_tcp:accept(LSock),
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spawn(ggs_player, start_link, [Sock]),
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{noreply, LSock, 0}.
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terminate(normal, _State) ->
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ok.
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code_change(_OldVsn, State, _Extra) ->
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{ok, State}.
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