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git.scottworley.com Git - reliable-chat/blob - webclient/rc.html
1 <!DOCTYPE html PUBLIC
"-//W3C//DTD XHTML 1.1//EN"
2 "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
3 <html xmlns=
"http://www.w3.org/1999/xhtml">
5 reliable-chat - multipath chat
6 Copyright (C) 2012 Scott Worley <sworley@chkno.net>
7 Copyright (C) 2012 Jason Hibbs <skitch@gmail.com>
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.
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.
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/>.
23 <title>Reliable Chat
</title>
24 <style type=
"text/css"><!--/*--><![CDATA[/*
><!--*/
30 background-color: #293134;
32 font-family: monospace;
40 background-color: #293134;
41 padding: 5px 5px 5px 0px;
45 padding: 0px 0px 0px 5px;
52 background-color: #293134;
56 padding: 0px 5px 55px 5px;
57 vertical-align: bottom
66 .timestamp:hover, .timestamp:hover .servertimestamps {
67 background-color: #556;
69 .timestamp:hover .servertimestamps {
77 border: 1px solid black;
82 img { width: 1px; height: 1px; }
83 iframe { display: none }
84 #status span { margin-right: 10px; }
86 background-color: #f00;
88 border: 1px solid black;
94 background-color: #0f0;
96 border: 1px solid black;
102 <script type=
"text/javascript"><!--//--><![CDATA[/
/><!--
103 var servers = ['chkno.net', 'rc2.chkno.net', 'echto.net', 'the-wes.com', 'vibrantlogic.com'];
105 var session = Math.random(); // For outgoing message IDs
106 var since = {}; // server -> time: For fetch?since=
107 var seen = {}; // seen_key -> message
108 var history = []; // List of messages sorted by Time
109 // Messages have these fields:
110 // Time: The timestamp. Median of ServerTimes
111 // ID: Some unique string for deduping
112 // Text: The text of the message
113 // ServerTimes: server -> timestamp
114 // UI: The DOM node for this message in the UI
117 var nick = localStorage.getItem("nick");
124 function rcsetnick(new_nick) {
125 localStorage.setItem("nick", new_nick);
128 function rcserverbase(server) {
129 // Add the default port if server doesn't contain a port number already
130 if (server.indexOf(":") == -1) {
131 return "http://" + server + ":21059";
133 return "http://" + server;
137 function rcchangeserverstatus(server, new_status) {
138 var statusbar = document.getElementById("status");
139 var spans = statusbar.getElementsByTagName("span");
140 for (var i in spans) {
141 if (spans[i].firstChild && 'data' in spans[i].firstChild && spans[i].firstChild.data == server) {
142 spans[i].setAttribute("class", new_status);
147 function rcformattime(t) {
149 d = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"][d];
150 var h = t.getHours();
151 var m = t.getMinutes();
152 var s = t.getSeconds();
154 return (x < 10 ? "0" : "") + x;
156 return d + " " + pad(h) + ":" + pad(m) + ":" + pad(s);
159 function rcaddservertimestamptohover(message, server) {
160 var divs = message.UI.getElementsByTagName("div");
161 for (var i in divs) {
162 if (divs[i].getAttribute && divs[i].getAttribute("class") == "servertimestamps") {
163 var d = document.createElement("div");
165 return (x < 10 ? "00" : (x < 100 ? "0" : "")) + x;
167 var text = rcformattime(message.ServerTimes[server]) + "." + pad(message.ServerTimes[server].getUTCMilliseconds()) + " " + server;
168 d.appendChild(document.createTextNode(text));
169 divs[i].appendChild(d);
174 function rcmakemessageUI(message) {
175 message.UI = document.createElement("div");
178 var servercount = document.createElement("span");
179 servercount.setAttribute("class", "servercount");
180 servercount.appendChild(document.createTextNode(Object.keys(message.ServerTimes).length));
181 message.UI.appendChild(servercount);
184 var timestamp_text = message.Time ? rcformattime(message.Time) : "";
185 var timestamp = document.createElement("span");
186 timestamp.setAttribute("class", "timestamp");
187 timestamp.appendChild(document.createTextNode(timestamp_text));
188 message.UI.appendChild(timestamp);
191 var timestamp_hover = document.createElement("div");
192 timestamp_hover.setAttribute("class", "servertimestamps");
193 timestamp.appendChild(timestamp_hover);
194 for (var server in message.ServerTimes) {
195 rcaddservertimestamptohover(message, server);
198 // Classify different message types
199 var text_span = document.createElement("span");
201 if (/^\*\*\* /.test(message.Text)) {
203 } else if (/^\* /.test(message.Text)) {
208 if (Object.keys(message.ServerTimes).length == 0) {
211 text_span.setAttribute("class", type);
212 text_span.appendChild(document.createTextNode(message.Text));
213 message.UI.appendChild(text_span);
216 function rcaddmessagetohistory(message) {
219 for (var i = history.length - 1; ; i--) {
220 if (i < 0 || (history[i].Time && message.Time >= history[i].Time)) {
222 history.splice(message_i, 0, message);
227 history.push(message);
228 message_i = history.length-1;
232 rcmakemessageUI(message);
234 var h = document.getElementById("history");
235 if (message_i + 1 < history.length) {
236 h.insertBefore(message.UI, history[message_i + 1].UI);
238 h.appendChild(message.UI);
240 window.scrollTo(0, document.body.scrollHeight);
243 function make_seen_key(id, text) {
244 return id.replace(/@/g, "@@") + "_@_" + text.replace(/@/g, "@@");
247 function rcupdatemessagetime(message) {
248 // Set message.Time to be the median of message.ServerTimes
250 for (var i in message.ServerTimes) {
251 times.push(message.ServerTimes[i]);
254 if (times.length % 2) {
255 message.Time = times[(times.length-1)/2];
257 var middle = times.length/2;
258 var difference = times[middle].getTime() - times[middle-1].getTime();
259 message.Time = new Date(times[middle-1].getTime() + difference/2);
262 // This may have broken history's in-sorted-order invariant
263 var hi = history.indexOf(message);
264 if ((history[hi-1] && history[hi-1].Time > message.Time) ||
265 (history[hi+1] && history[hi+1].Time < message.Time)) {
266 history.splice(hi,1);
267 rcaddmessagetohistory(message);
271 var spans = message.UI.getElementsByTagName("span");
272 for (var i in spans) {
273 if (spans[i].getAttribute) {
274 var type = spans[i].getAttribute("class");
275 if (type == "servercount") {
276 spans[i].firstChild.data = Object.keys(message.ServerTimes).length;
277 } else if (type == "timestamp") {
278 spans[i].firstChild.data = rcformattime(message.Time);
284 function rcreceivemessages(server, messages) {
285 for (var i in messages) {
287 m.Time = new Date(m.Time);
288 var seen_key = make_seen_key(m.ID, m.Text);
289 if (seen_key in seen) {
290 seen[seen_key].ServerTimes[server] = m.Time;
291 rcupdatemessagetime(seen[seen_key]);
292 rcaddservertimestamptohover(seen[seen_key], server);
295 m.ServerTimes[server] = m.Time;
297 rcaddmessagetohistory(m);
298 for (var i in servers) {
299 rcchangeserverstatus(servers[i], "sad");
302 rcchangeserverstatus(server, "happy");
306 function rcfetch(server) {
307 var delay = 10000; // TODO: Exponential backoff
308 var xhr = new XMLHttpRequest();
309 xhr.onreadystatechange = function() {
310 if (this.readyState == this.DONE) {
311 if (this.status == 200) {
312 var rtxt = this.responseText;
314 var messages = JSON.parse(rtxt);
315 if (messages != null) {
317 if (messages.length >= 1 && "Time" in messages[messages.length-1]) {
318 since[server] = messages[messages.length-1].Time;
320 rcreceivemessages(server, messages);
324 window.setTimeout(rcfetch, delay, server);
327 var uri = rcserverbase(server) + "/fetch";
328 if (server in since) {
329 uri += '?since="' + since[server] + '"';
331 xhr.open("GET", uri);
335 function rcconnect() {
336 for (var i in servers) {
339 var status_indicator = document.createElement("span");
340 status_indicator.appendChild(document.createTextNode(servers[i]));
341 status_indicator.setAttribute("class", "sad");
342 document.getElementById("status").appendChild(status_indicator);
346 function rcsend(d, message) {
347 message.ID = new Date().getTime() + "-" + session + "-" + Math.random();
348 seen[make_seen_key(message.ID, message.Text)] = message;
349 var path = "/speak" +
350 "?id=" + encodeURIComponent(message.ID) +
351 "&text=" + encodeURIComponent(message.Text);
352 for (var i in servers) {
353 var uri = rcserverbase(servers[i]) + path;
354 var img = document.createElement("img");
355 img.setAttribute("src", uri);
360 function rcinput(input) {
362 var re = /^\/([a-z]+) (.*)/
363 var match = re.exec(input);
364 if (match && match[1] == 'me') {
365 message = "* " + rcnick() + " " + match[2];
366 } else if (match && match[1] == 'nick') {
367 message = "*** " + rcnick() + " is now known as " + match[2];
370 message = "<" + rcnick() + "> " + input;
373 var m = {'Text': message, 'ServerTimes': {}};
374 rcaddmessagetohistory(m);
378 function rckeydown(event) {
379 if (event.keyCode == 13) {
380 rcinput(document.input.say.value);
381 document.input.say.value = "";
389 <body onload=
"rcconnect()">
391 <div id=
"history"></div>
394 <form name=
"input" onsubmit=
"return false" autocomplete=
"off">
395 <input id=
"say" onkeydown=
"return rckeydown(event)" autocomplete=
"off" autofocus=
"autofocus"></input>
397 <div id=
"status"> </div>