2014-04-22 14:32:04 +00:00
<!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" >
div.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 { width:600px; 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; }
.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; }
< / style >
< / head >
< body >
< header > < / header >
< article >
< table > < tr > < td >
< table width = "100%" > < tr > < td valign = middle align = center > < a href = "http://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 >
< section id = "increment" class = "group2" >
< div class = "title" > libwebsockets "dumb-increment-protocol"< / div >
< table > < tr > < td >
< table class = "content" width = "200px" >
< tr > < td align = center > < input type = button id = offset value = "Reset counter" onclick = "reset();" > < / td > < / tr >
< tr > < td width = 200px align = center > < div id = number > < / div > < / td > < / tr >
< tr > < td id = wsdi_statustd align = center class = "explain" > < div id = wsdi_status > Not initialized< / div > < / td > < / tr >
< / tr >
< / table >
< / td > < td class = "explain" >
The incrementing number is coming from the server and is individual for
each connection to the server... try opening a second browser window.
< br / > < br / >
The button zeros just this connection's number.
< br / > < br / >
< / td > < / tr > < / table >
< / section >
< br >
< section id = "mirror" class = "group2" >
< div class = "title" > libwebsockets "lws-mirror-protocol"< / div >
< 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 >
< table class = "content" >
< tr >
< td > 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 >
< / td >
< td id = wslm_statustd align = center class = "explain" > < div id = wslm_status > Not initialized< / div > < / td >
< / tr >
< tr >
< td colspan = 2 width = 500 class = "content" >
< div id = "wslm_drawing" >
< / div > < / td >
< / tr >
< / table >
< / section >
< / td > < / tr > < tr > < td >
Looking for support? < a href = "http://libwebsockets.org" > http://libwebsockets.org< / a > < br / >
Join the mailing list: < a href = "http://ml.libwebsockets.org/mailman/listinfo/libwebsockets" > http://ml.libwebsockets.org/mailman/listinfo/libwebsockets< / a >
< / td > < / tr > < / table >
< / article >
< script >
/* 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").textContent = " websocket connection opened ";
}
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);
}
function reset() {
socket_di.send("reset\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").textContent = " websocket connection opened ";
}
socket_lm.onmessage =function got_packet(msg) {
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var j = msg.data.split(';'), f = 0;
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while (f < j.length - 1 ) {
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var i = j[f].split(' ');
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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 >
