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827f21bb SW |
1 | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" |
2 | "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> | |
827f21bb | 3 | <html xmlns="http://www.w3.org/1999/xhtml"> |
520c21fd SW |
4 | <!-- |
5 | reliable-chat - multipath chat | |
6 | Copyright (C) 2012 Scott Worley <sworley@chkno.net> | |
7 | Copyright (C) 2012 Jason Hibbs <skitch@gmail.com> | |
8 | ||
9 | This program is free software: you can redistribute it and/or modify | |
10 | it under the terms of the GNU Affero General Public License as | |
11 | published by the Free Software Foundation, either version 3 of the | |
12 | License, or (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU Affero General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU Affero General Public License | |
20 | along with this program. If not, see <http://www.gnu.org/licenses/>. | |
21 | --> | |
827f21bb SW |
22 | <head> |
23 | <title>Reliable Chat</title> | |
0248a518 | 24 | <style type="text/css"><!--/*--><![CDATA[/*><!--*/ |
70f46223 JH |
25 | html, body { |
26 | width: 99.9%; | |
27 | height: 100%; | |
28 | margin: 0; | |
29 | padding: 0; | |
b22a2ced JH |
30 | background-color: #293134; |
31 | color: silver; | |
70f46223 JH |
32 | font-family: monospace; |
33 | } | |
34 | #container { | |
35 | height: 100%; | |
36 | } | |
37 | #status { | |
38 | width: 100%; | |
638866e9 | 39 | text-align: right; |
b22a2ced | 40 | background-color: #293134; |
70f46223 JH |
41 | padding: 5px 5px 5px 0px; |
42 | } | |
43 | #client { | |
44 | width: 98.5%; | |
45 | padding: 0px 0px 0px 5px; | |
46 | height: 50px; | |
47 | position: fixed; | |
48 | bottom: 0; | |
49 | } | |
50 | #input { | |
51 | width: 100%; | |
b22a2ced | 52 | background-color: #293134; |
70f46223 | 53 | } |
0248a518 | 54 | #say { width: 100% } |
70f46223 JH |
55 | #history { |
56 | padding: 0px 5px 55px 5px; | |
57 | vertical-align: bottom | |
58 | } | |
0248a518 SW |
59 | img { width: 1px; height: 1px; } |
60 | iframe { display: none } | |
70f46223 | 61 | #status span { margin-right: 10px; } |
f09c4ede JH |
62 | #status span.sad { |
63 | background-color: #f00; | |
64 | color: #fff; | |
65 | border: 1px solid black; | |
66 | border-radius: 5px; | |
67 | padding-left: 5px; | |
68 | padding-right: 5px; | |
69 | } | |
70 | #status span.happy { | |
71 | background-color: #0f0; | |
72 | color: #000; | |
73 | border: 1px solid black; | |
74 | border-radius: 5px; | |
75 | padding-left: 5px; | |
76 | padding-right: 5px; | |
77 | } | |
0248a518 SW |
78 | /*]]>*/--></style> |
79 | <script type="text/javascript"><!--//--><![CDATA[//><!-- | |
80 | var servers = ['chkno.net', 'rc2.chkno.net', 'echto.net', 'the-wes.com', 'vibrantlogic.com']; | |
81 | ||
da9ce2ab | 82 | var session = Math.random(); // For outgoing message IDs |
869430fa SW |
83 | var since = {}; // server -> time: For fetch?since= |
84 | var seen = {}; // seen_key -> message | |
5419ea4c | 85 | // Messages have these fields: |
40380bd3 | 86 | // Time: The timestamp. Median of ServerTimes |
5419ea4c SW |
87 | // ID: Some unique string for deduping |
88 | // Text: The text of the message | |
705e26cf | 89 | // ServerTimes: server -> timestamp |
5419ea4c | 90 | // UI: The DOM node for this message in the UI |
0248a518 SW |
91 | |
92 | function rcnick() { | |
93 | var nick = localStorage.getItem("nick"); | |
94 | if (nick) { | |
95 | return nick; | |
96 | } | |
97 | return 'anonymous'; | |
98 | } | |
99 | ||
100 | function rcsetnick(new_nick) { | |
101 | localStorage.setItem("nick", new_nick); | |
102 | } | |
103 | ||
104 | function rcserverbase(server) { | |
105 | // Add the default port if server doesn't contain a port number already | |
106 | if (server.indexOf(":") == -1) { | |
107 | return "http://" + server + ":21059"; | |
108 | } else { | |
109 | return "http://" + server; | |
110 | } | |
111 | } | |
112 | ||
113 | function rcchangeserverstatus(server, new_status) { | |
114 | var statusbar = document.getElementById("status"); | |
115 | var spans = statusbar.getElementsByTagName("span"); | |
116 | for (var i in spans) { | |
117 | if (spans[i].firstChild && 'data' in spans[i].firstChild && spans[i].firstChild.data == server) { | |
118 | spans[i].setAttribute("class", new_status); | |
119 | } | |
120 | } | |
121 | } | |
122 | ||
bd1ed9dd SW |
123 | function rcformattime(t) { |
124 | var d = t.getDay(); | |
125 | d = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"][d]; | |
126 | var h = t.getHours(); | |
127 | var m = t.getMinutes(); | |
128 | var s = t.getSeconds(); | |
129 | function pad(x) { | |
130 | return (x < 10 ? "0" : "") + x; | |
131 | } | |
132 | return d + " " + pad(h) + ":" + pad(m) + ":" + pad(s); | |
133 | } | |
134 | ||
0248a518 | 135 | function rcaddmessagetohistory(message) { |
869430fa | 136 | message.UI = document.createElement("div"); |
bd1ed9dd | 137 | var text = (message.Time ? rcformattime(message.Time) : "") + " " + message.Text; |
869430fa | 138 | message.UI.appendChild(document.createTextNode(text)); |
0248a518 | 139 | var h = document.getElementById("history"); |
869430fa | 140 | h.appendChild(message.UI); |
0248a518 | 141 | window.scrollTo(0, document.body.scrollHeight); |
0248a518 SW |
142 | } |
143 | ||
144 | function make_seen_key(id, text) { | |
145 | return id.replace(/@/g, "@@") + "_@_" + text.replace(/@/g, "@@"); | |
146 | } | |
147 | ||
40380bd3 SW |
148 | function rcupdatemessagetime(message) { |
149 | // Set message.Time to be the median of message.ServerTimes | |
150 | var times = []; | |
151 | for (var i in message.ServerTimes) { | |
152 | times.push(message.ServerTimes[i]); | |
153 | } | |
154 | times.sort(); | |
155 | var middle = times.length/2; | |
156 | if (times.length % 2) { | |
157 | message.Time = times[middle]; | |
158 | } else { | |
159 | var difference = times[middle].getTime() - times[middle-1].getTime(); | |
160 | message.Time = new Date(times[middle-1].getTime() + difference/2); | |
161 | } | |
162 | } | |
163 | ||
79ced6f1 SW |
164 | function rcreceivemessages(server, messages) { |
165 | for (var i in messages) { | |
ad35b1be | 166 | var m = messages[i]; |
bd1ed9dd | 167 | m.Time = new Date(m.Time); |
ad35b1be | 168 | var seen_key = make_seen_key(m.ID, m.Text); |
705e26cf SW |
169 | if (seen_key in seen) { |
170 | seen[seen_key].ServerTimes[server] = m.Time; | |
40380bd3 | 171 | rcupdatemessagetime(seen[seen_key]); |
705e26cf | 172 | } else { |
16640c5d SW |
173 | m.ServerTimes = {}; |
174 | m.ServerTimes[server] = m.Time; | |
869430fa | 175 | seen[seen_key] = m; |
ad35b1be | 176 | rcaddmessagetohistory(m); |
79ced6f1 SW |
177 | for (var i in servers) { |
178 | rcchangeserverstatus(servers[i], "sad"); | |
179 | } | |
0248a518 | 180 | } |
79ced6f1 | 181 | rcchangeserverstatus(server, "happy"); |
0248a518 | 182 | } |
0248a518 SW |
183 | } |
184 | ||
79ced6f1 SW |
185 | function rcfetch(server) { |
186 | var delay = 10000; // TODO: Exponential backoff | |
187 | var xhr = new XMLHttpRequest(); | |
188 | xhr.onreadystatechange = function() { | |
189 | if (this.readyState == this.DONE) { | |
190 | if (this.status == 200) { | |
191 | var rtxt = this.responseText; | |
192 | if (rtxt != null) { | |
193 | var messages = JSON.parse(rtxt); | |
194 | if (messages != null) { | |
79ced6f1 SW |
195 | delay = 40; |
196 | if (messages.length >= 1 && "Time" in messages[messages.length-1]) { | |
ad35b1be | 197 | since[server] = messages[messages.length-1].Time; |
79ced6f1 | 198 | } |
92ca5f8a | 199 | rcreceivemessages(server, messages); |
79ced6f1 | 200 | } |
0248a518 SW |
201 | } |
202 | } | |
79ced6f1 | 203 | window.setTimeout(rcfetch, delay, server); |
0248a518 SW |
204 | } |
205 | } | |
79ced6f1 SW |
206 | var uri = rcserverbase(server) + "/fetch"; |
207 | if (server in since) { | |
208 | uri += '?since="' + since[server] + '"'; | |
209 | } | |
210 | xhr.open("GET", uri); | |
211 | xhr.send(); | |
0248a518 SW |
212 | } |
213 | ||
214 | function rcconnect() { | |
0248a518 | 215 | for (var i in servers) { |
79ced6f1 | 216 | rcfetch(servers[i]); |
0248a518 SW |
217 | // Status bar entry |
218 | var status_indicator = document.createElement("span"); | |
219 | status_indicator.appendChild(document.createTextNode(servers[i])); | |
220 | status_indicator.setAttribute("class", "sad"); | |
221 | document.getElementById("status").appendChild(status_indicator); | |
222 | } | |
0248a518 SW |
223 | } |
224 | ||
225 | function rcsend(d, message) { | |
226 | var id = new Date().getTime() + "-" + session + "-" + Math.random(); | |
869430fa | 227 | seen[make_seen_key(id, message)] = message; |
0248a518 SW |
228 | var path = "/speak" + |
229 | "?id=" + encodeURIComponent(id) + | |
230 | "&text=" + encodeURIComponent(message); | |
231 | for (var i in servers) { | |
232 | var uri = rcserverbase(servers[i]) + path; | |
233 | var img = document.createElement("img"); | |
234 | img.setAttribute("src", uri); | |
235 | d.appendChild(img); | |
236 | } | |
237 | } | |
238 | ||
5a6c082a SW |
239 | function rcinput(input) { |
240 | var message; | |
241 | var re = /^\/([a-z]+) (.*)/ | |
242 | var match = re.exec(input); | |
243 | if (match && match[1] == 'me') { | |
244 | message = "* " + rcnick() + " " + match[2]; | |
245 | } else if (match && match[1] == 'nick') { | |
246 | message = "*** " + rcnick() + " is now known as " + match[2]; | |
247 | rcsetnick(match[2]); | |
248 | } else { | |
249 | message = "<" + rcnick() + "> " + input; | |
250 | } | |
251 | ||
869430fa SW |
252 | var m = {'Text': message}; |
253 | rcaddmessagetohistory(m); | |
254 | rcsend(m.UI, m); | |
5a6c082a SW |
255 | } |
256 | ||
0248a518 SW |
257 | function rckeydown(event) { |
258 | if (event.keyCode == 13) { | |
5a6c082a | 259 | rcinput(document.input.say.value); |
0248a518 SW |
260 | document.input.say.value = ""; |
261 | ||
0248a518 SW |
262 | } |
263 | } | |
264 | //--><!]]></script> | |
265 | ||
827f21bb SW |
266 | </head> |
267 | ||
f0e385c7 | 268 | <body onload="rcconnect()"> |
70f46223 JH |
269 | <div id="container"> |
270 | <div id="history"></div> | |
271 | <div id="client"> | |
272 | <div id="input"> | |
273 | <form name="input" onsubmit="return false" autocomplete="off"> | |
274 | <input id="say" onkeydown="return rckeydown(event)" autocomplete="off" autofocus="autofocus"></input> | |
275 | </form></div> | |
276 | <div id="status"> </div> | |
277 | </div> | |
278 | </div> | |
827f21bb SW |
279 | </body> |
280 | </html> |