mirror of
https://github.com/warmcat/libwebsockets.git
synced 2025-03-23 00:00:06 +01:00
c55fd27d75
This adds - simple lws_urlencode() - simple lws_urldecode() - simple lws_sql_purify Those expect the data to all be there and process it up until the first '\0'. There is also a larger opaque apis for handling POST_BODY urldecode. To enable these, you need to give cmake -DLWS_WITH_STATEFUL_URLDECODE=1 (or arrange any larger feature that relies on it sets that in CMakeLists.txt) - stateful urldecode with parameter array These have create / process / destroy semantics on a struct that maintains decode state. Stateful urldecode is capable of dealing with large POST data in multiple POST_BODY callbacks cleanly, eg, file transfer by POST. Stateful urldecode with parameter array wraps the above with a canned callback that stores the urldecoded data and indexes them in a pointer array matching an array of parameter names. You may also pass it an optional callback when creating it, that will recieve uploaded file content. The test html is updated to support both urlencoded and multipart forms, with some javascript to do clientside validation of an arbitrary 100KB file size limit (there is no file size limit in the apis). Signed-off-by: Andy Green <andy@warmcat.com>
764 lines
20 KiB
HTML
764 lines
20 KiB
HTML
<!DOCTYPE html>
|
|
<html lang="en">
|
|
<head>
|
|
<meta charset=utf-8 http-equiv="Content-Language" content="en"/>
|
|
<title>Minimal Websocket test app</title>
|
|
<style type="text/css">
|
|
span.title { font-size:18pt; font: Arial; font-weight:normal; text-align:center; color:#000000; }
|
|
.browser { font-size:18pt; font: Arial; font-weight:normal; text-align:center; color:#ffff00; vertical-align:middle; text-align:center; background:#d0b070; padding:12px; -webkit-border-radius:10px; -moz-border-radius:10px; border-radius:10px;}
|
|
.group2 { vertical-align:middle;
|
|
text-align:center;
|
|
background:#f0f0e0;
|
|
padding:12px;
|
|
-webkit-border-radius:10px;
|
|
-moz-border-radius:10px;
|
|
border-radius:10px; }
|
|
.explain { vertical-align:middle;
|
|
text-align:center;
|
|
background:#f0f0c0; padding:12px;
|
|
-webkit-border-radius:10px;
|
|
-moz-border-radius:10px;
|
|
border-radius:10px;
|
|
color:#404000; }
|
|
td.wsstatus { vertical-align:middle; width:200px; height:50px;
|
|
text-align:center;
|
|
background:#f0f0c0; padding:6px;
|
|
-webkit-border-radius:8px;
|
|
-moz-border-radius:8px;
|
|
border-radius:8px;
|
|
color:#404000; }
|
|
.tdform { vertical-align:middle; width:200px; height:50px;
|
|
text-align:center;
|
|
background:#f0f0d0; padding:6px;
|
|
-webkit-border-radius:8px;
|
|
-moz-border-radius:8px; margin:10px;
|
|
border-radius:8px;
|
|
border: 1px solid black;
|
|
border-collapse: collapse;font-size:18pt; font: Arial; font-weight:normal; text-align:center; color:#000000;
|
|
color:#404000; }
|
|
|
|
td.l { vertical-align:middle;
|
|
text-align:center;
|
|
background:#d0d0b0;
|
|
padding:3px;
|
|
-webkit-border-radius:3px;
|
|
-moz-border-radius:3px;
|
|
border-radius:3px; }
|
|
.content { vertical-align:top; text-align:center; background:#fffff0; padding:12px; -webkit-border-radius:10px; -moz-border-radius:10px; border-radius:10px; }
|
|
.canvas { vertical-align:top; text-align:center; background:#efefd0; padding:12px; -webkit-border-radius:10px; -moz-border-radius:10px; border-radius:10px; }
|
|
.tabs {
|
|
position: relative;
|
|
min-height: 750px; /* This part sucks */
|
|
clear: both;
|
|
margin: 25px 0;
|
|
}
|
|
.tab {
|
|
float: left;
|
|
}
|
|
.tab label {
|
|
background: #eee;
|
|
padding: 10px;
|
|
border: 1px solid #ccc;
|
|
margin-left: -1px;
|
|
position: relative;
|
|
left: 1px;
|
|
}
|
|
.tab [type=radio] {
|
|
display: none;
|
|
}
|
|
.content {
|
|
position: absolute;
|
|
top: 28px;
|
|
left: 0;
|
|
background: white;
|
|
right: 0;
|
|
bottom: 0;
|
|
padding: 20px;
|
|
border: 1px solid #ccc;
|
|
}
|
|
[type=radio]:checked ~ label {
|
|
background: white;
|
|
border-bottom: 1px solid white;
|
|
z-index: 2;
|
|
}
|
|
[type=radio]:checked ~ label ~ .content {
|
|
z-index: 1;
|
|
}
|
|
</style>
|
|
</head>
|
|
|
|
<body>
|
|
<header></header>
|
|
<article>
|
|
|
|
<table><tr><td>
|
|
|
|
<table width=600px>
|
|
<tr>
|
|
<td valign=middle align=center>
|
|
<a href="https://libwebsockets.org">
|
|
<img src="libwebsockets.org-logo.png"></a></td><td>
|
|
<section class="browser">Detected Browser:
|
|
<div id=brow>...</div></section>
|
|
</td>
|
|
</tr>
|
|
|
|
</table>
|
|
</td></tr>
|
|
<tr><td colspan=2 align=center>
|
|
Click <a href="leaf.jpg" target="_blank">Here</a> to
|
|
have the test server send a big picture by http.
|
|
</td></tr>
|
|
<tr><td colspan=2>
|
|
<div class="tabs">
|
|
|
|
<div class="tab">
|
|
<input type="radio" id="tab-1" name="tab-group-1" checked>
|
|
<label for="tab-1">Dumb Increment Demo</label>
|
|
|
|
<div class="content">
|
|
<div id="dumb" class="group2">
|
|
<table>
|
|
<tr>
|
|
<td id=wsdi_statustd align=center class="wsstatus">
|
|
<span id=wsdi_status>Websocket connection not initialized</span></td>
|
|
<td><span class="title">dumb increment-protocol</span></td>
|
|
</tr>
|
|
<tr>
|
|
<td class="explain" colspan=2>
|
|
The incrementing number is coming from the server at 20Hz and is individual for
|
|
each connection to the server... try opening a second browser window.
|
|
<br/><br/>
|
|
The button sends a message over the websocket link to ask the server
|
|
to zero just this connection's number.
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td align=center><div id=number style="font-size:120%;"> </div></td>
|
|
<td align=center>
|
|
<input type=button id=offset value="Reset counter" onclick="reset();" >
|
|
<input type=button id=junk value="Send junk" onclick="junk();" >
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="tab">
|
|
<input type="radio" id="tab-2" name="tab-group-1">
|
|
<label for="tab-2">Mirror Demo</label>
|
|
|
|
<div class="content">
|
|
<div id="mirror" class="group2">
|
|
<table>
|
|
<tr>
|
|
<td colspan=1 id=wslm_statustd align=center class="wsstatus">
|
|
<span id=wslm_status>Websocket connection not initialized</span>
|
|
</td>
|
|
<td>
|
|
<span class="title">lws-mirror-protocol</span>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td colspan=2>
|
|
<div class="explain">
|
|
Use the mouse to draw on the canvas below -- all other browser windows open
|
|
on this page see your drawing in realtime and you can see any of theirs as
|
|
well.
|
|
<br/><br/>
|
|
The lws-mirror protocol doesn't interpret what is being sent to it, it just
|
|
re-sends it to every other websocket it has a connection with using that
|
|
protocol, including the guy who sent the packet.
|
|
<br/><br/>
|
|
<b>libwebsockets-test-client</b> joins in by spamming circles on to this shared canvas when
|
|
run.
|
|
</div>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td colspan=2>Drawing color:
|
|
<select id="color" onchange="update_color();">
|
|
<option value=#000000>Black</option>
|
|
<option value=#0000ff>Blue</option>
|
|
<option value=#20ff20>Green</option>
|
|
<option value=#802020>Dark Red</option>
|
|
</select>
|
|
</tr>
|
|
<tr>
|
|
<td colspan=2 width=500 height=320>
|
|
<div id="wslm_drawing" style="background:white"></div>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="tab">
|
|
<input type="radio" id="tab-3" name="tab-group-1">
|
|
<label for="tab-3">Close Testing</label>
|
|
|
|
<div class="content">
|
|
<div id="ot" class="group2">
|
|
<table>
|
|
<tr>
|
|
<td>
|
|
|
|
</td></tr>
|
|
<tr><td id=ot_statustd align=center class="wsstatus">
|
|
<span id=ot_status>Websocket connection not initialized</span>
|
|
</td>
|
|
<td colspan=2><span class="title">Open and close testing</span></td>
|
|
</tr>
|
|
<tr>
|
|
<td class="explain" colspan=3 style="padding:3">
|
|
To help with open and close testing, you can open and close a connection by hand using
|
|
the buttons.<br>
|
|
"<b>Close</b>" closes the connection from the browser with code 3000
|
|
and reason 'Bye!".<br>
|
|
"<b>Request Server Close</b>" sends a message asking the server to
|
|
initiate the close, which it does with code 1001 and reason "Seeya".
|
|
</td></tr>
|
|
<tr>
|
|
<td align=center><input type=button id=ot_open_btn value="Open" onclick="ot_open();" ></td>
|
|
<td align=center><input type=button id=ot_close_btn disabled value="Close" onclick="ot_close();" ></td>
|
|
<td align=center><input type=button id=ot_req_close_btn disabled value="Request Server Close" onclick="ot_req_close();" ></td>
|
|
</tr>
|
|
|
|
</table>
|
|
|
|
</div>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="tab">
|
|
<input type="radio" id="tab-4" name="tab-group-1">
|
|
<label for="tab-4">Server info</label>
|
|
|
|
<div class="content">
|
|
<div id="ot" class="group2">
|
|
<table>
|
|
<tr>
|
|
<td id=s_statustd align=center class="wsstatus">
|
|
<div id=s_status>Websocket connection not initialized</div>
|
|
</td>
|
|
<td colspan=1>
|
|
<span class="title">Server Info</span>
|
|
</td>
|
|
</tr><tr>
|
|
<td class="explain" colspan=2>
|
|
This information is sent by the server over a ws[s] link and updated live
|
|
whenever the information changes server-side.
|
|
</td></tr>
|
|
<tr>
|
|
<td align=center colspan=2><div id=servinfo></div></td>
|
|
</tr>
|
|
<tr>
|
|
<td align=center colspan=2><div id=conninfo style="border : solid 2px #e0d040; padding : 4px; width : 500px; height : 350px; overflow : auto; "></</div></td>
|
|
</tr>
|
|
</table>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="tab">
|
|
<input type="radio" id="tab-5" name="tab-group-1">
|
|
<label for="tab-5">POST</label>
|
|
|
|
<div class="content">
|
|
<div id="ot" class="group2">
|
|
<table width=100%>
|
|
<tr>
|
|
<td colspan=1>
|
|
<span class="title">POST Form testing</span>
|
|
</td>
|
|
</tr><tr>
|
|
<td class="explain" colspan=2>
|
|
This tests POST handling in lws.
|
|
</td></tr>
|
|
<tr>
|
|
<td align=center colspan=2 class=tdform><div id=postinfo style=form>
|
|
FORM 1: send with urlencoded POST body args<br>
|
|
<form action="formtest" method="post">
|
|
<span style="font-size:12pt;">Some text: </span>
|
|
<input type="text" name="text" value="Give me some text"><br>
|
|
<input type="submit" name="send" value="Send the form">
|
|
</form>
|
|
</div></td>
|
|
</tr>
|
|
|
|
<script>
|
|
function check_file()
|
|
{
|
|
var f = document.getElementById('file').files[0];
|
|
var max_len = 100000;
|
|
var dis = 0;
|
|
|
|
if (f) {
|
|
if (f.size >= max_len) {
|
|
dis = 1;
|
|
document.getElementById('file_info').innerHTML =
|
|
"<span style=\"color:red;font-weight:bold\">File larger than "+max_len+"</span>";
|
|
} else
|
|
document.getElementById('file_info').innerHTML =
|
|
"File length "+f.size;
|
|
} else
|
|
dis = 1;
|
|
|
|
document.getElementById('upload').disabled = dis;
|
|
}
|
|
</script>
|
|
|
|
<tr>
|
|
<td align=center colspan=2 class=tdform><div id=postinfo style=form>
|
|
FORM 2: send with multipart/form-data<br>
|
|
(can handle file upload, test limited to 100KB)<br>
|
|
<form name=multipart action="formtest" method="post" enctype="multipart/form-data">
|
|
<span style="font-size:12pt;">Some text: </span>
|
|
<input type="text" name="text" value="Give me some text">
|
|
<br>
|
|
<input type="file" name="file" id="file" size="20"
|
|
onchange="check_file();"> <span id=file_info style="font-size:12pt;"></span><br>
|
|
<input type="submit" id="upload" name="upload" disabled=1 value="Upload">
|
|
</form>
|
|
</div></td>
|
|
</tr>
|
|
|
|
</table>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
|
|
</div>
|
|
</td></tr></table>
|
|
|
|
Looking for support? <a href="https://libwebsockets.org">https://libwebsockets.org</a>, <a href="https://github.com/warmcat/libwebsockets">https://github.com/warmcat/libwebsockets</a></a><br/>
|
|
Join the mailing list: <a href="https://libwebsockets.org/mailman/listinfo/libwebsockets">https://libwebsockets.org/mailman/listinfo/libwebsockets</a>
|
|
|
|
</article>
|
|
|
|
<script>
|
|
|
|
/*
|
|
* We display untrusted stuff in html context... reject anything
|
|
* that has HTML stuff in it
|
|
*/
|
|
|
|
function san(s)
|
|
{
|
|
if (s.search("<") != -1)
|
|
return "invalid string";
|
|
|
|
return s;
|
|
}
|
|
|
|
/* BrowserDetect came from http://www.quirksmode.org/js/detect.html */
|
|
|
|
var BrowserDetect = {
|
|
init: function () {
|
|
this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
|
|
this.version = this.searchVersion(navigator.userAgent)
|
|
|| this.searchVersion(navigator.appVersion)
|
|
|| "an unknown version";
|
|
this.OS = this.searchString(this.dataOS) || "an unknown OS";
|
|
},
|
|
searchString: function (data) {
|
|
for (var i=0;i<data.length;i++) {
|
|
var dataString = data[i].string;
|
|
var dataProp = data[i].prop;
|
|
this.versionSearchString = data[i].versionSearch || data[i].identity;
|
|
if (dataString) {
|
|
if (dataString.indexOf(data[i].subString) != -1)
|
|
return data[i].identity;
|
|
}
|
|
else if (dataProp)
|
|
return data[i].identity;
|
|
}
|
|
},
|
|
searchVersion: function (dataString) {
|
|
var index = dataString.indexOf(this.versionSearchString);
|
|
if (index == -1) return;
|
|
return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
|
|
},
|
|
dataBrowser: [
|
|
{
|
|
string: navigator.userAgent,
|
|
subString: "Chrome",
|
|
identity: "Chrome"
|
|
},
|
|
{ string: navigator.userAgent,
|
|
subString: "OmniWeb",
|
|
versionSearch: "OmniWeb/",
|
|
identity: "OmniWeb"
|
|
},
|
|
{
|
|
string: navigator.vendor,
|
|
subString: "Apple",
|
|
identity: "Safari",
|
|
versionSearch: "Version"
|
|
},
|
|
{
|
|
prop: window.opera,
|
|
identity: "Opera",
|
|
versionSearch: "Version"
|
|
},
|
|
{
|
|
string: navigator.vendor,
|
|
subString: "iCab",
|
|
identity: "iCab"
|
|
},
|
|
{
|
|
string: navigator.vendor,
|
|
subString: "KDE",
|
|
identity: "Konqueror"
|
|
},
|
|
{
|
|
string: navigator.userAgent,
|
|
subString: "Firefox",
|
|
identity: "Firefox"
|
|
},
|
|
{
|
|
string: navigator.vendor,
|
|
subString: "Camino",
|
|
identity: "Camino"
|
|
},
|
|
{ // for newer Netscapes (6+)
|
|
string: navigator.userAgent,
|
|
subString: "Netscape",
|
|
identity: "Netscape"
|
|
},
|
|
{
|
|
string: navigator.userAgent,
|
|
subString: "MSIE",
|
|
identity: "Explorer",
|
|
versionSearch: "MSIE"
|
|
},
|
|
{
|
|
string: navigator.userAgent,
|
|
subString: "Gecko",
|
|
identity: "Mozilla",
|
|
versionSearch: "rv"
|
|
},
|
|
{ // for older Netscapes (4-)
|
|
string: navigator.userAgent,
|
|
subString: "Mozilla",
|
|
identity: "Netscape",
|
|
versionSearch: "Mozilla"
|
|
}
|
|
],
|
|
dataOS : [
|
|
{
|
|
string: navigator.platform,
|
|
subString: "Win",
|
|
identity: "Windows"
|
|
},
|
|
{
|
|
string: navigator.platform,
|
|
subString: "Mac",
|
|
identity: "Mac"
|
|
},
|
|
{
|
|
string: navigator.userAgent,
|
|
subString: "iPhone",
|
|
identity: "iPhone/iPod"
|
|
},
|
|
{
|
|
string: navigator.platform,
|
|
subString: "Linux",
|
|
identity: "Linux"
|
|
}
|
|
]
|
|
|
|
};
|
|
BrowserDetect.init();
|
|
|
|
document.getElementById("brow").textContent = " " + BrowserDetect.browser + " "
|
|
+ BrowserDetect.version +" " + BrowserDetect.OS +" ";
|
|
|
|
var pos = 0;
|
|
|
|
function get_appropriate_ws_url()
|
|
{
|
|
var pcol;
|
|
var u = document.URL;
|
|
|
|
/*
|
|
* We open the websocket encrypted if this page came on an
|
|
* https:// url itself, otherwise unencrypted
|
|
*/
|
|
|
|
if (u.substring(0, 5) == "https") {
|
|
pcol = "wss://";
|
|
u = u.substr(8);
|
|
} else {
|
|
pcol = "ws://";
|
|
if (u.substring(0, 4) == "http")
|
|
u = u.substr(7);
|
|
}
|
|
|
|
u = u.split('/');
|
|
|
|
/* + "/xxx" bit is for IE10 workaround */
|
|
|
|
return pcol + u[0] + "/xxx";
|
|
}
|
|
|
|
|
|
document.getElementById("number").textContent = get_appropriate_ws_url();
|
|
|
|
/* dumb increment protocol */
|
|
|
|
var socket_di;
|
|
|
|
if (typeof MozWebSocket != "undefined") {
|
|
socket_di = new MozWebSocket(get_appropriate_ws_url(),
|
|
"dumb-increment-protocol");
|
|
} else {
|
|
socket_di = new WebSocket(get_appropriate_ws_url(),
|
|
"dumb-increment-protocol");
|
|
}
|
|
|
|
|
|
try {
|
|
socket_di.onopen = function() {
|
|
document.getElementById("wsdi_statustd").style.backgroundColor = "#40ff40";
|
|
document.getElementById("wsdi_status").innerHTML =
|
|
" <b>websocket connection opened</b><br>" +
|
|
san(socket_di.extensions);
|
|
}
|
|
|
|
socket_di.onmessage =function got_packet(msg) {
|
|
document.getElementById("number").textContent = msg.data + "\n";
|
|
}
|
|
|
|
socket_di.onclose = function(){
|
|
document.getElementById("wsdi_statustd").style.backgroundColor = "#ff4040";
|
|
document.getElementById("wsdi_status").textContent = " websocket connection CLOSED ";
|
|
}
|
|
} catch(exception) {
|
|
alert('<p>Error' + exception);
|
|
}
|
|
|
|
var socket_status, jso, s;
|
|
|
|
if (typeof MozWebSocket != "undefined") {
|
|
socket_status = new MozWebSocket(get_appropriate_ws_url(),
|
|
"lws-status");
|
|
} else {
|
|
socket_status = new WebSocket(get_appropriate_ws_url(),
|
|
"lws-status");
|
|
}
|
|
|
|
|
|
try {
|
|
socket_status.onopen = function() {
|
|
document.getElementById("s_statustd").style.backgroundColor = "#40ff40";
|
|
document.getElementById("s_status").innerHTML =
|
|
" <b>websocket connection opened</b><br>" +
|
|
san(socket_status.extensions);
|
|
}
|
|
|
|
socket_status.onmessage =function got_packet(msg) {
|
|
jso = JSON.parse(msg.data);
|
|
|
|
document.getElementById("servinfo").innerHTML =
|
|
"<table><tr><td class=l>Build info</td><td>"+
|
|
san(jso.version) + "</td></tr>" +
|
|
"<tr><td class=l>Server info</td><td>" +
|
|
san(jso.hostname) + "</td></tr>" +
|
|
"</table>";
|
|
s="<table>";
|
|
var n;
|
|
for (n = 0; n < jso.conns.length; n++)
|
|
s = s + "<tr><td class=l>client " + (n + 1) +
|
|
"</td><td><b>" + san(jso.conns[n].peer) +
|
|
"</b><br>" + san(jso.conns[n].time) +
|
|
"<br>" + san(jso.conns[n].ua) +
|
|
"</td></tr>";
|
|
s = s + "</table>";
|
|
|
|
document.getElementById("conninfo").innerHTML = s;
|
|
}
|
|
|
|
socket_status.onclose = function(){
|
|
document.getElementById("s_statustd").style.backgroundColor = "#ff4040";
|
|
document.getElementById("s_status").textContent = " websocket connection CLOSED ";
|
|
}
|
|
} catch(exception) {
|
|
alert('<p>Error' + exception);
|
|
}
|
|
|
|
function reset() {
|
|
socket_di.send("reset\n");
|
|
}
|
|
|
|
|
|
function junk() {
|
|
for(var word = ''; word.length < 9000; word += 'a'){}
|
|
socket_di.send(word);
|
|
}
|
|
|
|
var socket_ot;
|
|
|
|
function ot_open() {
|
|
if (typeof MozWebSocket != "undefined") {
|
|
socket_ot = new MozWebSocket(get_appropriate_ws_url(),
|
|
"dumb-increment-protocol");
|
|
} else {
|
|
socket_ot = new WebSocket(get_appropriate_ws_url(),
|
|
"dumb-increment-protocol");
|
|
}
|
|
try {
|
|
socket_ot.onopen = function() {
|
|
document.getElementById("ot_statustd").style.backgroundColor = "#40ff40";
|
|
document.getElementById("ot_status").innerHTML = " <b>websocket connection opened</b><br>" + san(socket_di.extensions);
|
|
document.getElementById("ot_open_btn").disabled = true;
|
|
document.getElementById("ot_close_btn").disabled = false;
|
|
document.getElementById("ot_req_close_btn").disabled = false;
|
|
}
|
|
|
|
socket_ot.onclose = function(e){
|
|
document.getElementById("ot_statustd").style.backgroundColor = "#ff4040";
|
|
document.getElementById("ot_status").textContent = " websocket connection CLOSED, code: " + e.code +
|
|
", reason: " + e.reason;
|
|
document.getElementById("ot_open_btn").disabled = false;
|
|
document.getElementById("ot_close_btn").disabled = true;
|
|
document.getElementById("ot_req_close_btn").disabled = true;
|
|
}
|
|
} catch(exception) {
|
|
alert('<p>Error' + exception);
|
|
}
|
|
}
|
|
|
|
/* browser will close the ws in a controlled way */
|
|
function ot_close() {
|
|
socket_ot.close(3000, "Bye!");
|
|
}
|
|
|
|
/* we ask the server to close the ws in a controlled way */
|
|
function ot_req_close() {
|
|
socket_ot.send("closeme\n");
|
|
}
|
|
|
|
/* lws-mirror protocol */
|
|
|
|
var down = 0;
|
|
var no_last = 1;
|
|
var last_x = 0, last_y = 0;
|
|
var ctx;
|
|
var socket_lm;
|
|
var color = "#000000";
|
|
|
|
if (typeof MozWebSocket != "undefined") {
|
|
socket_lm = new MozWebSocket(get_appropriate_ws_url(),
|
|
"lws-mirror-protocol");
|
|
} else {
|
|
socket_lm = new WebSocket(get_appropriate_ws_url(),
|
|
"lws-mirror-protocol");
|
|
}
|
|
|
|
|
|
try {
|
|
socket_lm.onopen = function() {
|
|
document.getElementById("wslm_statustd").style.backgroundColor = "#40ff40";
|
|
document.getElementById("wslm_status").innerHTML =
|
|
" <b>websocket connection opened</b><br>" +
|
|
san(socket_lm.extensions);
|
|
}
|
|
|
|
socket_lm.onmessage =function got_packet(msg) {
|
|
j = msg.data.split(';');
|
|
f = 0;
|
|
while (f < j.length - 1) {
|
|
i = j[f].split(' ');
|
|
if (i[0] == 'd') {
|
|
ctx.strokeStyle = i[1];
|
|
ctx.beginPath();
|
|
ctx.moveTo(+(i[2]), +(i[3]));
|
|
ctx.lineTo(+(i[4]), +(i[5]));
|
|
ctx.stroke();
|
|
}
|
|
if (i[0] == 'c') {
|
|
ctx.strokeStyle = i[1];
|
|
ctx.beginPath();
|
|
ctx.arc(+(i[2]), +(i[3]), +(i[4]), 0, Math.PI*2, true);
|
|
ctx.stroke();
|
|
}
|
|
|
|
f++;
|
|
}
|
|
}
|
|
|
|
socket_lm.onclose = function(){
|
|
document.getElementById("wslm_statustd").style.backgroundColor = "#ff4040";
|
|
document.getElementById("wslm_status").textContent = " websocket connection CLOSED ";
|
|
}
|
|
} catch(exception) {
|
|
alert('<p>Error' + exception);
|
|
}
|
|
|
|
var canvas = document.createElement('canvas');
|
|
canvas.height = 300;
|
|
canvas.width = 480;
|
|
ctx = canvas.getContext("2d");
|
|
|
|
document.getElementById('wslm_drawing').appendChild(canvas);
|
|
|
|
canvas.addEventListener('mousemove', ev_mousemove, false);
|
|
canvas.addEventListener('mousedown', ev_mousedown, false);
|
|
canvas.addEventListener('mouseup', ev_mouseup, false);
|
|
|
|
offsetX = offsetY = 0;
|
|
element = canvas;
|
|
if (element.offsetParent) {
|
|
do {
|
|
offsetX += element.offsetLeft;
|
|
offsetY += element.offsetTop;
|
|
} while ((element = element.offsetParent));
|
|
}
|
|
|
|
function update_color() {
|
|
color = document.getElementById("color").value;
|
|
}
|
|
|
|
function ev_mousedown (ev) {
|
|
down = 1;
|
|
}
|
|
|
|
function ev_mouseup(ev) {
|
|
down = 0;
|
|
no_last = 1;
|
|
}
|
|
|
|
function ev_mousemove (ev) {
|
|
var x, y;
|
|
|
|
if (ev.offsetX) {
|
|
x = ev.offsetX;
|
|
y = ev.offsetY;
|
|
} else {
|
|
x = ev.layerX - offsetX;
|
|
y = ev.layerY - offsetY;
|
|
|
|
}
|
|
|
|
if (!down)
|
|
return;
|
|
if (no_last) {
|
|
no_last = 0;
|
|
last_x = x;
|
|
last_y = y;
|
|
return;
|
|
}
|
|
socket_lm.send("d " + color + " " + last_x + " " + last_y + " " + x + ' ' + y + ';');
|
|
|
|
last_x = x;
|
|
last_y = y;
|
|
}
|
|
|
|
|
|
</script>
|
|
|
|
</body>
|
|
</html>
|