1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
%% Copyright (c) 2011-2012, Loïc Hoguin <[email protected]>
%%
%% Permission to use, copy, modify, and/or distribute this software for any
%% purpose with or without fee is hereby granted, provided that the above
%% copyright notice and this permission notice appear in all copies.
%%
%% THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
%% WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
%% MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
%% ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
%% WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
%% ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
%% OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
%% @doc TCP transport API.
%%
%% Wrapper around <em>gen_tcp</em> implementing the Ranch transport API.
%%
%% @see gen_tcp
-module(ranch_tcp).
-export([name/0]).
-export([messages/0]).
-export([connect/3]).
-export([listen/1]).
-export([accept/2]).
-export([recv/3]).
-export([send/2]).
-export([setopts/2]).
-export([controlling_process/2]).
-export([peername/1]).
-export([close/1]).
-export([sockname/1]).
%% @doc Name of this transport API, <em>tcp</em>.
-spec name() -> tcp.
name() -> tcp.
%% @doc Atoms used in the process messages sent by this API.
%%
%% They identify incoming data, closed connection and errors when receiving
%% data in active mode.
-spec messages() -> {tcp, tcp_closed, tcp_error}.
messages() -> {tcp, tcp_closed, tcp_error}.
%% @private
-spec connect(string(), inet:port_number(), any())
-> {ok, inet:socket()} | {error, atom()}.
connect(Host, Port, Opts) when is_list(Host), is_integer(Port) ->
gen_tcp:connect(Host, Port,
Opts ++ [binary, {active, false}, {packet, raw}]).
%% @doc Setup a socket to listen on the given port on the local host.
%%
%% The available options are:
%% <dl>
%% <dt>port</dt><dd>Mandatory. TCP port number to open.</dd>
%% <dt>backlog</dt><dd>Maximum length of the pending connections queue.
%% Defaults to 1024.</dd>
%% <dt>ip</dt><dd>Interface to listen on. Listen on all interfaces
%% by default.</dd>
%% </dl>
%%
%% @see gen_tcp:listen/2
-spec listen([{port, inet:port_number()} | {ip, inet:ip_address()}])
-> {ok, inet:socket()} | {error, atom()}.
listen(Opts) ->
{port, Port} = lists:keyfind(port, 1, Opts),
Backlog = proplists:get_value(backlog, Opts, 1024),
ListenOpts0 = [binary, {active, false},
{backlog, Backlog}, {packet, raw}, {reuseaddr, true}],
ListenOpts =
case lists:keyfind(ip, 1, Opts) of
false -> ListenOpts0;
Ip -> [Ip|ListenOpts0]
end,
gen_tcp:listen(Port, ListenOpts).
%% @doc Accept an incoming connection on a listen socket.
%% @see gen_tcp:accept/2
-spec accept(inet:socket(), timeout())
-> {ok, inet:socket()} | {error, closed | timeout | atom()}.
accept(LSocket, Timeout) ->
gen_tcp:accept(LSocket, Timeout).
%% @doc Receive a packet from a socket in passive mode.
%% @see gen_tcp:recv/3
-spec recv(inet:socket(), non_neg_integer(), timeout())
-> {ok, any()} | {error, closed | atom()}.
recv(Socket, Length, Timeout) ->
gen_tcp:recv(Socket, Length, Timeout).
%% @doc Send a packet on a socket.
%% @see gen_tcp:send/2
-spec send(inet:socket(), iolist()) -> ok | {error, atom()}.
send(Socket, Packet) ->
gen_tcp:send(Socket, Packet).
%% @doc Set one or more options for a socket.
%% @see inet:setopts/2
-spec setopts(inet:socket(), list()) -> ok | {error, atom()}.
setopts(Socket, Opts) ->
inet:setopts(Socket, Opts).
%% @doc Assign a new controlling process <em>Pid</em> to <em>Socket</em>.
%% @see gen_tcp:controlling_process/2
-spec controlling_process(inet:socket(), pid())
-> ok | {error, closed | not_owner | atom()}.
controlling_process(Socket, Pid) ->
gen_tcp:controlling_process(Socket, Pid).
%% @doc Return the address and port for the other end of a connection.
%% @see inet:peername/1
-spec peername(inet:socket())
-> {ok, {inet:ip_address(), inet:port_number()}} | {error, atom()}.
peername(Socket) ->
inet:peername(Socket).
%% @doc Close a TCP socket.
%% @see gen_tcp:close/1
-spec close(inet:socket()) -> ok.
close(Socket) ->
gen_tcp:close(Socket).
%% @doc Get the local address and port of a socket
%% @see inet:sockname/1
-spec sockname(inet:socket())
-> {ok, {inet:ip_address(), inet:port_number()}} | {error, atom()}.
sockname(Socket) ->
inet:sockname(Socket).
|
