Software /
code /
prosody
Annotate
net/websocket.lua @ 6937:f5d2e58fbefa
util.session: What is a session?
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Tue, 24 Nov 2015 19:00:43 +0100 |
parent | 6455:b6514e691a70 |
child | 7759:69706084bdfe |
rev | line source |
---|---|
6389
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
1 -- Prosody IM |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
2 -- Copyright (C) 2012 Florian Zeitz |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
3 -- Copyright (C) 2014 Daurnimator |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
4 -- |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
5 -- This project is MIT/X11 licensed. Please see the |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
6 -- COPYING file in the source package for more information. |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
7 -- |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
8 |
6396
17b54f523796
Check Sec-WebSocket-Protocol header
Florian Zeitz <florob@babelmonkeys.de>
parents:
6395
diff
changeset
|
9 local t_concat = table.concat; |
17b54f523796
Check Sec-WebSocket-Protocol header
Florian Zeitz <florob@babelmonkeys.de>
parents:
6395
diff
changeset
|
10 |
6389
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
11 local http = require "net.http"; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
12 local frames = require "net.websocket.frames"; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
13 local base64 = require "util.encodings".base64; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
14 local sha1 = require "util.hashes".sha1; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
15 local random_bytes = require "util.random".bytes; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
16 local timer = require "util.timer"; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
17 local log = require "util.logger".init "websocket"; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
18 |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
19 local close_timeout = 3; -- Seconds to wait after sending close frame until closing connection. |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
20 |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
21 local websockets = {}; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
22 |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
23 local websocket_listeners = {}; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
24 function websocket_listeners.ondisconnect(handler, err) |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
25 local s = websockets[handler]; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
26 websockets[handler] = nil; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
27 if s.close_timer then |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
28 timer.stop(s.close_timer); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
29 s.close_timer = nil; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
30 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
31 s.readyState = 3; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
32 if s.close_code == nil and s.onerror then s:onerror(err); end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
33 if s.onclose then s:onclose(s.close_code, s.close_message or err); end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
34 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
35 |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
36 function websocket_listeners.ondetach(handler) |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
37 websockets[handler] = nil; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
38 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
39 |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
40 local function fail(s, code, reason) |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
41 module:log("warn", "WebSocket connection failed, closing. %d %s", code, reason); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
42 s:close(code, reason); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
43 s.handler:close(); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
44 return false |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
45 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
46 |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
47 function websocket_listeners.onincoming(handler, buffer, err) |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
48 local s = websockets[handler]; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
49 s.readbuffer = s.readbuffer..buffer; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
50 while true do |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
51 local frame, len = frames.parse(s.readbuffer); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
52 if frame == nil then break end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
53 s.readbuffer = s.readbuffer:sub(len+1); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
54 |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
55 log("debug", "Websocket received frame: opcode=%0x, %i bytes", frame.opcode, #frame.data); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
56 |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
57 -- Error cases |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
58 if frame.RSV1 or frame.RSV2 or frame.RSV3 then -- Reserved bits non zero |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
59 return fail(s, 1002, "Reserved bits not zero"); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
60 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
61 |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
62 if frame.opcode < 0x8 then |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
63 local databuffer = s.databuffer; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
64 if frame.opcode == 0x0 then -- Continuation frames |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
65 if not databuffer then |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
66 return fail(s, 1002, "Unexpected continuation frame"); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
67 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
68 databuffer[#databuffer+1] = frame.data; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
69 elseif frame.opcode == 0x1 or frame.opcode == 0x2 then -- Text or Binary frame |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
70 if databuffer then |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
71 return fail(s, 1002, "Continuation frame expected"); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
72 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
73 databuffer = {type=frame.opcode, frame.data}; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
74 s.databuffer = databuffer; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
75 else |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
76 return fail(s, 1002, "Reserved opcode"); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
77 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
78 if frame.FIN then |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
79 s.databuffer = nil; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
80 if s.onmessage then |
6396
17b54f523796
Check Sec-WebSocket-Protocol header
Florian Zeitz <florob@babelmonkeys.de>
parents:
6395
diff
changeset
|
81 s:onmessage(t_concat(databuffer), databuffer.type); |
6389
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
82 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
83 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
84 else -- Control frame |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
85 if frame.length > 125 then -- Control frame with too much payload |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
86 return fail(s, 1002, "Payload too large"); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
87 elseif not frame.FIN then -- Fragmented control frame |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
88 return fail(s, 1002, "Fragmented control frame"); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
89 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
90 if frame.opcode == 0x8 then -- Close request |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
91 if frame.length == 1 then |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
92 return fail(s, 1002, "Close frame with payload, but too short for status code"); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
93 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
94 local status_code, message = frames.parse_close(frame.data); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
95 if status_code == nil then |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
96 --[[ RFC 6455 7.4.1 |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
97 1005 is a reserved value and MUST NOT be set as a status code in a |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
98 Close control frame by an endpoint. It is designated for use in |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
99 applications expecting a status code to indicate that no status |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
100 code was actually present. |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
101 ]] |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
102 status_code = 1005 |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
103 elseif status_code < 1000 then |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
104 return fail(s, 1002, "Closed with invalid status code"); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
105 elseif ((status_code > 1003 and status_code < 1007) or status_code > 1011) and status_code < 3000 then |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
106 return fail(s, 1002, "Closed with reserved status code"); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
107 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
108 s.close_code, s.close_message = status_code, message; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
109 s:close(1000); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
110 return true; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
111 elseif frame.opcode == 0x9 then -- Ping frame |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
112 frame.opcode = 0xA; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
113 frame.MASK = true; -- RFC 6455 6.1.5: If the data is being sent by the client, the frame(s) MUST be masked |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
114 handler:write(frames.build(frame)); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
115 elseif frame.opcode == 0xA then -- Pong frame |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
116 log("debug", "Received unexpected pong frame: " .. tostring(frame.data)); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
117 else |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
118 return fail(s, 1002, "Reserved opcode"); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
119 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
120 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
121 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
122 return true; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
123 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
124 |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
125 local websocket_methods = {}; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
126 local function close_timeout_cb(now, timerid, s) |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
127 s.close_timer = nil; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
128 log("warn", "Close timeout waiting for server to close, closing manually."); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
129 s.handler:close(); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
130 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
131 function websocket_methods:close(code, reason) |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
132 if self.readyState < 2 then |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
133 code = code or 1000; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
134 log("debug", "closing WebSocket with code %i: %s" , code , tostring(reason)); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
135 self.readyState = 2; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
136 local handler = self.handler; |
6455
b6514e691a70
net.websocket: Make data masking configurable
Florian Zeitz <florob@babelmonkeys.de>
parents:
6407
diff
changeset
|
137 handler:write(frames.build_close(code, reason, true)); |
6389
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
138 -- Do not close socket straight away, wait for acknowledgement from server. |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
139 self.close_timer = timer.add_task(close_timeout, close_timeout_cb, self); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
140 elseif self.readyState == 2 then |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
141 log("debug", "tried to close a closing WebSocket, closing the raw socket."); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
142 -- Stop timer |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
143 if self.close_timer then |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
144 timer.stop(self.close_timer); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
145 self.close_timer = nil; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
146 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
147 local handler = self.handler; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
148 handler:close(); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
149 else |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
150 log("debug", "tried to close a closed WebSocket, ignoring."); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
151 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
152 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
153 function websocket_methods:send(data, opcode) |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
154 if self.readyState < 1 then |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
155 return nil, "WebSocket not open yet, unable to send data."; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
156 elseif self.readyState >= 2 then |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
157 return nil, "WebSocket closed, unable to send data."; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
158 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
159 if opcode == "text" or opcode == nil then |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
160 opcode = 0x1; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
161 elseif opcode == "binary" then |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
162 opcode = 0x2; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
163 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
164 local frame = { |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
165 FIN = true; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
166 MASK = true; -- RFC 6455 6.1.5: If the data is being sent by the client, the frame(s) MUST be masked |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
167 opcode = opcode; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
168 data = tostring(data); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
169 }; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
170 log("debug", "WebSocket sending frame: opcode=%0x, %i bytes", frame.opcode, #frame.data); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
171 return self.handler:write(frames.build(frame)); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
172 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
173 |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
174 local websocket_metatable = { |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
175 __index = websocket_methods; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
176 }; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
177 |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
178 local function connect(url, ex, listeners) |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
179 ex = ex or {}; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
180 |
6395
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
181 --[[RFC 6455 4.1.7: |
6389
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
182 The request MUST include a header field with the name |
6395
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
183 |Sec-WebSocket-Key|. The value of this header field MUST be a |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
184 nonce consisting of a randomly selected 16-byte value that has |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
185 been base64-encoded (see Section 4 of [RFC4648]). The nonce |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
186 MUST be selected randomly for each connection. |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
187 ]] |
6389
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
188 local key = base64.encode(random_bytes(16)); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
189 |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
190 -- Either a single protocol string or an array of protocol strings. |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
191 local protocol = ex.protocol; |
6396
17b54f523796
Check Sec-WebSocket-Protocol header
Florian Zeitz <florob@babelmonkeys.de>
parents:
6395
diff
changeset
|
192 if type(protocol) == "string" then |
6407
4bbd198cf3e6
net.websocket: Fix handling of 'protocol' argument
Kim Alvefur <zash@zash.se>
parents:
6398
diff
changeset
|
193 protocol = { protocol, [protocol] = true }; |
4bbd198cf3e6
net.websocket: Fix handling of 'protocol' argument
Kim Alvefur <zash@zash.se>
parents:
6398
diff
changeset
|
194 elseif type(protocol) == "table" and protocol[1] then |
4bbd198cf3e6
net.websocket: Fix handling of 'protocol' argument
Kim Alvefur <zash@zash.se>
parents:
6398
diff
changeset
|
195 for _, v in ipairs(protocol) do |
4bbd198cf3e6
net.websocket: Fix handling of 'protocol' argument
Kim Alvefur <zash@zash.se>
parents:
6398
diff
changeset
|
196 protocol[v] = true; |
4bbd198cf3e6
net.websocket: Fix handling of 'protocol' argument
Kim Alvefur <zash@zash.se>
parents:
6398
diff
changeset
|
197 end |
4bbd198cf3e6
net.websocket: Fix handling of 'protocol' argument
Kim Alvefur <zash@zash.se>
parents:
6398
diff
changeset
|
198 else |
4bbd198cf3e6
net.websocket: Fix handling of 'protocol' argument
Kim Alvefur <zash@zash.se>
parents:
6398
diff
changeset
|
199 protocol = nil; |
6389
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
200 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
201 |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
202 local headers = { |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
203 ["Upgrade"] = "websocket"; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
204 ["Connection"] = "Upgrade"; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
205 ["Sec-WebSocket-Key"] = key; |
6407
4bbd198cf3e6
net.websocket: Fix handling of 'protocol' argument
Kim Alvefur <zash@zash.se>
parents:
6398
diff
changeset
|
206 ["Sec-WebSocket-Protocol"] = protocol and t_concat(protocol, ", "); |
6395
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
207 ["Sec-WebSocket-Version"] = "13"; |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
208 ["Sec-WebSocket-Extensions"] = ex.extensions; |
6389
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
209 } |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
210 if ex.headers then |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
211 for k,v in pairs(ex.headers) do |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
212 headers[k] = v; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
213 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
214 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
215 |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
216 local s = setmetatable({ |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
217 readbuffer = ""; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
218 databuffer = nil; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
219 handler = nil; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
220 close_code = nil; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
221 close_message = nil; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
222 close_timer = nil; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
223 readyState = 0; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
224 protocol = nil; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
225 |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
226 url = url; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
227 |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
228 onopen = listeners.onopen; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
229 onclose = listeners.onclose; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
230 onmessage = listeners.onmessage; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
231 onerror = listeners.onerror; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
232 }, websocket_metatable); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
233 |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
234 local http_url = url:gsub("^(ws)", "http"); |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
235 local http_req = http.request(http_url, { |
6395
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
236 method = "GET"; |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
237 headers = headers; |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
238 sslctx = ex.sslctx; |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
239 }, function(b, c, r, http_req) |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
240 if c ~= 101 |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
241 or r.headers["connection"]:lower() ~= "upgrade" |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
242 or r.headers["upgrade"] ~= "websocket" |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
243 or r.headers["sec-websocket-accept"] ~= base64.encode(sha1(key .. "258EAFA5-E914-47DA-95CA-C5AB0DC85B11")) |
6407
4bbd198cf3e6
net.websocket: Fix handling of 'protocol' argument
Kim Alvefur <zash@zash.se>
parents:
6398
diff
changeset
|
244 or (protocol and not protocol[r.headers["sec-websocket-protocol"]]) |
6395
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
245 then |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
246 s.readyState = 3; |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
247 log("warn", "WebSocket connection to %s failed: %s", url, tostring(b)); |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
248 if s.onerror then s:onerror("connecting-failed"); end |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
249 return; |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
250 end |
6389
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
251 |
6395
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
252 s.protocol = r.headers["sec-websocket-protocol"]; |
6389
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
253 |
6395
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
254 -- Take possession of socket from http |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
255 http_req.conn = nil; |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
256 local handler = http_req.handler; |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
257 s.handler = handler; |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
258 websockets[handler] = s; |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
259 handler:setlistener(websocket_listeners); |
6389
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
260 |
6395
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
261 log("debug", "WebSocket connected successfully to %s", url); |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
262 s.readyState = 1; |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
263 if s.onopen then s:onopen(); end |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
264 websocket_listeners.onincoming(handler, b); |
e0164b0fcafd
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
265 end); |
6389
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
266 |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
267 return s; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
268 end |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
269 |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
270 return { |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
271 connect = connect; |
8eccd07b619c
net/websocket: Add new websocket client code
daurnimator <quae@daurnimator.com>
parents:
diff
changeset
|
272 }; |