kumi/speedtest
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Implemented multistream; Implemented jitter test; Implemented Fetch API (default disabled); Added more settings; Improved code quality; Improved accuracy; Added browser-specific optimizations; Added minified version; Expanded documentation; Some bug fixes

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dosse91 2017-03-02 17:58:40 +01:00
parent e5612b4f10
commit fce6a67be0
10 changed files with 343 additions and 121 deletions
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2
.gitignore vendored Normal file
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@ -0,0 +1,2 @@
doc.odt
cktest.html

9
README.md
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@ -11,14 +11,13 @@ This is a very lightweight Speedtest implemented in Javascript, using XMLHttpReq
Only modern browsers are supported (Edge 12+)
## Requirements
- A reasonably fast web server
- Some way to generate garbage data using either the included PHP script, a [big file of random data](http://downloads.fdossena.com/geth.php?r=speedtest-bigfile), or a symlink to /dev/urandom
- Your server must accept large POST requests (up to 10 Megabytes), otherwise the upload test will fail
- Client side, there must not be any type of buffering (such as a proxy), or you may get incorrect results
- A reasonably fast web server. PHP is optional but recommended (see doc.pdf for details)
- Some way to generate garbage data (PHP script included, see doc.pdf for other solutions)
- Your server must accept large POST requests (up to 20 Megabytes), otherwise the upload test will fail
- It's also better if your server does not use compression, but it's not mandatory
## How to use
See the examples, it's really simple.
See the examples or doc.pdf
## License
Copyright (C) 2016-2017 Federico Dossena

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example1.html
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@ -14,13 +14,13 @@
<h4>Latency</h4>
<div id="ping"></div>
<script type="text/javascript">
var w=new Worker("speedtest_worker.js"); //create new worker
var w=new Worker("speedtest_worker.min.js"); //create new worker
setInterval(function(){w.postMessage("status");}.bind(this),100); //ask for status every 100ms
w.onmessage=function(event){ //when status is received, split the string and put the values in the appropriate fields
var data=event.data.split(";"); //string format: status;download;upload;ping (speeds are in mbit/s) (status: 0=not started, 1=downloading, 2=uploading, 3=ping, 4=done, 5=aborted)
document.getElementById("download").innerHTML=data[1]+" Mbit/s";
document.getElementById("upload").innerHTML=data[2]+" Mbit/s";
document.getElementById("ping").innerHTML=data[3]+" ms";
document.getElementById("ping").innerHTML=data[3]+" ms, "+data[5]+" ms jitter";
document.getElementById("ip").innerHTML=data[4];
}
w.postMessage("start"); //start the speedtest (default params. keep garbage.php and empty.dat in the same directory as the js file)

14
example2.html
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@ -11,7 +11,7 @@
}
div.test{
display:inline-block;
width:30vw;
margin:1em;
text-align:center;
}
div.testName,div.meterUnit{
@ -48,22 +48,28 @@
<div class="testName">Latency</div>
<div class="meter">&nbsp;<span id="ping"></span>&nbsp;</div>
<div class="meterUnit">ms</div>
</div>
<div class="test">
<div class="testName">Jitter</div>
<div class="meter">&nbsp;<span id="jitter"></span>&nbsp;</div>
<div class="meterUnit">ms</div>
</div>
<div id="ip"></div>
<script type="text/javascript">
var w=new Worker("speedtest_worker.js");
var w=new Worker("speedtest_worker.min.js");
var interval=setInterval(function(){w.postMessage("status");}.bind(this),100);
w.onmessage=function(event){
var data=event.data.split(";");
var status=Number(data[0]);
var dl=document.getElementById("download"),ul=document.getElementById("upload"),ping=document.getElementById("ping"),ip=document.getElementById("ip");
dl.className=status==1?"flash":"";ul.className=status==2?"flash":"";ping.className=status==3?"flash":"";
var dl=document.getElementById("download"),ul=document.getElementById("upload"),ping=document.getElementById("ping"),ip=document.getElementById("ip"),jitter=document.getElementById("jitter");
dl.className=status==1?"flash":"";ping.className=status==2?"flash":"";jitter.className=ul.className=status==3?"flash":"";
if(status>=4){
clearInterval(interval);
}
dl.innerHTML=data[1];
ul.innerHTML=data[2];
ping.innerHTML=data[3];
jitter.innerHTML=data[5];
ip.innerHTML="Your IP: "+data[4];
}.bind(this);
w.postMessage('start {"url_dl":"garbage.php","url_ul":"empty.dat","url_ping":"empty.dat","time_dl":"10","time_ul":"15","count_ping":"30"}'); //start with custom parameters. paths are relative to js file. you can omit parameters that you don't want to change

27
example3.html
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@ -11,16 +11,18 @@
}
div.test{
display:inline-block;
width:30vw;
margin:1em;
font-size:2vw;
min-width:20vw;
text-align:center;
}
div.testName,div.meterUnit{
font-size:3vw;
font-size:1em;
}
div.meter{
font-size:6vw;
font-size:1.5em;
line-height:1.5em;
height:1.5em !important;
height:2em !important;
}
.flash{
animation:flash 0.6s linear infinite;
@ -41,6 +43,11 @@
margin:0.8em 0;
font-size:1.2em;
}
@media all and (max-width: 50em){
div.test{
font-size:2em;
}
}
</style>
<script type="text/javascript">
var w=null;
@ -48,13 +55,13 @@
document.getElementById("startBtn").style.display="none";
document.getElementById("testArea").style.display="";
document.getElementById("abortBtn").style.display="";
w=new Worker("speedtest_worker.js");
w=new Worker("speedtest_worker.min.js");
var interval=setInterval(function(){w.postMessage("status");}.bind(this),100);
w.onmessage=function(event){
var data=event.data.split(";");
var status=Number(data[0]);
var dl=document.getElementById("download"),ul=document.getElementById("upload"),ping=document.getElementById("ping"),ip=document.getElementById("ip");
dl.className=status==1?"flash":"";ul.className=status==2?"flash":"";ping.className=status==3?"flash":"";
var dl=document.getElementById("download"),ul=document.getElementById("upload"),ping=document.getElementById("ping"),ip=document.getElementById("ip"),jitter=document.getElementById("jitter");
dl.className=status==1?"flash":"";ping.className=status==2?"flash":"";jitter.className=ul.className=status==3?"flash":"";
if(status>=4){
clearInterval(interval);
document.getElementById("abortBtn").style.display="none";
@ -67,6 +74,7 @@
dl.innerHTML=data[1];
ul.innerHTML=data[2];
ping.innerHTML=data[3];
jitter.innerHTML=data[5];
ip.innerHTML=data[4];
}.bind(this);
w.postMessage("start");
@ -94,6 +102,11 @@
<div class="testName">Latency</div>
<div class="meter">&nbsp;<span id="ping"></span>&nbsp;</div>
<div class="meterUnit">ms</div>
</div>
<div class="test">
<div class="testName">Jitter</div>
<div class="meter">&nbsp;<span id="jitter"></span>&nbsp;</div>
<div class="meterUnit">ms</div>
</div>
<br/>
<a href="javascript:abortTest()" id="abortBtn">Abort</a>

27
example4.html
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@ -65,7 +65,7 @@
var w=null;
var ggdl,ggul,ggping;
function runTest(){
w=new Worker("speedtest_worker.js");
w=new Worker("speedtest_worker.min.js");
var interval=setInterval(function(){w.postMessage("status");}.bind(this),100);
document.getElementById("abortBtn").style.display="";
document.getElementById("startBtn").style.display="none";
@ -82,8 +82,9 @@
updateGauge(ggul, data[2]);
updateGauge(ggping, data[3]);
document.getElementById("ip").innerHTML="Your IP: "+data[4];
updateGauge(ggjitter, data[5]);
}.bind(this);
w.postMessage('start {"time_ul":"10", "time_dl":"10", "count_ping":"20", "url_dl":"garbage.php","url_ul":"empty.dat","url_ping":"empty.dat","url_getIp":"getIP.php"}');
w.postMessage('start {"time_ul":"10", "time_dl":"10", "count_ping":"50", "url_dl":"garbage.php","url_ul":"empty.dat","url_ping":"empty.dat","url_getIp":"getIP.php"}');
}
function abortTest(){
if(w)w.postMessage("abort");
@ -138,7 +139,25 @@
refreshAnimationTime: 300,
value: 0,
min: 0,
max: 10,
max: 100,
decimals : 2,
formatNumber: true,
humanFriendly : false,
levelColors: [
"#999999",
"#993333"
]
});
ggjitter = new JustGage({
id: 'ggjitter',
title: "Jitter",
label: "ms",
titleFontFamily : "Open Sans",
valueFontFamily : "Open Sans",
refreshAnimationTime: 300,
value: 0,
min: 0,
max: 100,
decimals : 2,
formatNumber: true,
humanFriendly : false,
@ -146,7 +165,6 @@
"#999999",
"#993333"
]
});
});
@ -166,6 +184,7 @@
<div class="meter" id="ggdl"></div>
<div class="meter" id="ggul"></div>
<div class="meter" id="ggping"></div>
<div class="meter" id="ggjitter"></div>
</div>
<div id="ip"></div>
<div>

2
garbage.php
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@ -17,7 +17,7 @@ header("Pragma: no-cache");
// Generate data
$data=openssl_random_pseudo_bytes(1048576);
// Deliver chunks of 1048576 bytes
for($i=0;$i<100;$i++){
for($i=0;$i<intval($_GET["ckSize"]);$i++){
echo $data;
flush();
}

378
speedtest_worker.js
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@ -1,30 +1,129 @@
var testStatus=0,dlStatus="",ulStatus="",pingStatus="",clientIp="";
var settings={time_ul:15,time_dl:15,count_ping:35,url_dl:"garbage.php",url_ul:"empty.dat",url_ping:"empty.dat",url_getIp:"getIP.php"};
var xhr=null;
/*
HTML5 Speedtest v4.0
by Federico Dossena
https://github.com/adolfintel/speedtest/
GNU LGPLv3 License
*/
//data reported to main thread
var testStatus=0, //0=not started, 1=download test, 2=ping+jitter test, 3=upload test, 4=finished, 5=abort/error
dlStatus="", //download speed in megabit/s with 2 decimal digits
ulStatus="", //upload speed in megabit/s with 2 decimal digits
pingStatus="", //ping in milliseconds with 2 decimal digits
jitterStatus="", //jitter in milliseconds with 2 decimal digits
clientIp=""; //client's IP address as reported by getIP.php
//test settings. can be overridden by sending specific values with the start command
var settings={
time_ul:15, //duration of upload test in seconds
time_dl:15, //duration of download test in seconds
count_ping:35, //number of pings to perform in ping test
url_dl:"garbage.php", //path to a large file or garbage.php, used for download test. must be relative to this js file
url_ul:"empty.dat", //path to an empty file, used for upload test. must be relative to this js file
url_ping:"empty.dat", //path to an empty file, used for ping test. must be relative to this js file
url_getIp:"getIP.php", //path to getIP.php relative to this js file, or a similar thing that outputs the client's ip
xhr_dlMultistream:10, //number of download streams to use (can be different if enable_quirks is active)
xhr_ulMultistream:3, //number of upload streams to use (can be different if enable_quirks is active)
xhr_dlUseBlob:false, //if set to true, it reduces ram usage but uses the hard drive (useful with large garbagePhp_chunkSize and/or high xhr_dlMultistream)
garbagePhp_chunkSize:20, //size of chunks sent by garbage.php (can be different if enable_quirks is active)
enable_quirks:true, //enable quirks for specific browsers. currently it overrides settings to optimize for specific browsers, unless they are already being overridden with the start command
allow_fetchAPI:false, //enables Fetch API. currently disabled because it leaks memory like no tomorrow
force_fetchAPI:false //when Fetch API is enabled, it will force usage on every browser that supports it
};
var xhr=null, //array of currently active xhr requests
interval=null; //timer used in tests
/*
when set to true (automatically) the download test will use the fetch api instead of xhr.
fetch api is used if
-allow_fetchAPI is true AND
-(we're on chrome that supports fetch api AND enable_quirks is true) OR (we're on any browser that supports fetch api AND force_fetchAPI is true)
*/
var useFetchAPI=false;
/*
listener for commands from main thread to this worker.
commands:
-status: returns the current status as a string of values spearated by a semicolon (;) in this order: testStatus;dlStatus;ulStatus;pingStatus;clientIp;jitterStatus
-abort: aborts the current test
-start: starts the test. optionally, settings can be passed as JSON.
example: start {"time_ul":"10", "time_dl":"10", "count_ping":"50"}
*/
this.addEventListener('message', function(e){
var params=e.data.split(" ");
if(params[0]=="status"){
postMessage(testStatus+";"+dlStatus+";"+ulStatus+";"+pingStatus+";"+clientIp);
if(params[0]=="status"){ //return status
postMessage(testStatus+";"+dlStatus+";"+ulStatus+";"+pingStatus+";"+clientIp+";"+jitterStatus);
}
if(params[0]=="start"&&testStatus==0){
if(params[0]=="start"&&testStatus==0){ //start new test
testStatus=1;
try{
//parse settings, if present
var s=JSON.parse(e.data.substring(5));
if(typeof s.url_dl != "undefined") settings.url_dl=s.url_dl;
if(typeof s.url_ul != "undefined") settings.url_ul=s.url_ul;
if(typeof s.url_ping != "undefined") settings.url_ping=s.url_ping;
if(typeof s.url_getIp != "undefined") settings.url_getIp=s.url_getIp;
if(typeof s.time_dl != "undefined") settings.time_dl=s.time_dl;
if(typeof s.time_ul != "undefined") settings.time_ul=s.time_ul;
if(typeof s.count_ping != "undefined") settings.count_ping=s.count_ping;
}catch(e){}
getIp(function(){dlTest(function(){testStatus=2;ulTest(function(){testStatus=3;pingTest(function(){testStatus=4;});});})});
if(typeof s.url_dl != "undefined") settings.url_dl=s.url_dl; //download url
if(typeof s.url_ul != "undefined") settings.url_ul=s.url_ul; //upload url
if(typeof s.url_ping != "undefined") settings.url_ping=s.url_ping; //ping url
if(typeof s.url_getIp != "undefined") settings.url_getIp=s.url_getIp; //url to getIP.php
if(typeof s.time_dl != "undefined") settings.time_dl=s.time_dl; //duration of download test
if(typeof s.time_ul != "undefined") settings.time_ul=s.time_ul; //duration of upload test
if(typeof s.enable_quirks != "undefined") settings.enable_quirks=s.enable_quirks; //enable quirks or not
if(typeof s.allow_fetchAPI != "undefined") settings.allow_fetchAPI=s.allow_fetchAPI; //allows fetch api to be used if supported
//quirks for specific browsers. more may be added in future releases
if(settings.enable_quirks){
var ua=navigator.userAgent;
if(/Firefox.(\d+\.\d+)/i.test(ua)){
//ff more precise with 1 upload stream
settings.xhr_ulMultistream=1;
}
if(/Edge.(\d+\.\d+)/i.test(ua)){
//edge more precise with 3 download streams
settings.xhr_dlMultistream=3;
}
if((/Safari.(\d+)/i.test(ua))&&!(/Chrome.(\d+)/i.test(ua))){
//safari more precise with 10 upload streams and 5mb chunks for download test
settings.xhr_ulMultistream=10;
settings.garbagePhp_chunkSize=5;
}
if(/Chrome.(\d+)/i.test(ua)&&(!!self.fetch)){
//chrome can't handle large xhr very well, use fetch api if available and allowed
if(settings.allow_fetchAPI) useFetchAPI=true;
//chrome more precise with 5 streams
settings.xhr_dlMultistream=5;
}
}
if(typeof s.count_ping != "undefined") settings.count_ping=s.count_ping; //number of pings for ping test
if(typeof s.xhr_dlMultistream != "undefined") settings.xhr_dlMultistream=s.xhr_dlMultistream; //number of download streams
if(typeof s.xhr_ulMultistream != "undefined") settings.xhr_ulMultistream=s.xhr_ulMultistream; //number of upload streams
if(typeof s.xhr_dlUseBlob != "undefined") settings.xhr_dlUseBlob=s.xhr_dlUseBlob; //use blob for download test
if(typeof s.garbagePhp_chunkSize != "undefined") settings.garbagePhp_chunkSize=s.garbagePhp_chunkSize; //size of garbage.php chunks
if(typeof s.force_fetchAPI != "undefined") settings.force_fetchAPI=s.force_fetchAPI; //use fetch api on all browsers that support it if enabled
if(settings.allow_fetchAPI&&settings.force_fetchAPI&&(!!self.fetch)) useFetchAPI=true;
}catch(e){console.log(e)}
//run the tests
console.log(settings);
console.log("Fetch API: "+useFetchAPI);
getIp(function(){dlTest(function(){testStatus=2;pingTest(function(){testStatus=3;ulTest(function(){testStatus=4;});});})});
}
if(params[0]=="abort"){
try{if(xhr)xhr.abort();}catch(e){}
testStatus=5;dlStatus="";ulStatus="";pingStatus="";
if(params[0]=="abort"){ //abort command
clearRequests(); //stop all xhr activity
if(interval)clearInterval(interval); //clear timer if present
testStatus=5;dlStatus="";ulStatus="";pingStatus="";jitterStatus=""; //set test as aborted
}
});
//stops all XHR activity, aggressively
function clearRequests(){
if(xhr){
for(var i=0;i<xhr.length;i++){
if(useFetchAPI)try{xhr[i].cancelRequested=true;}catch(e){}
try{xhr[i].onprogress=null; xhr[i].onload=null; xhr[i].onerror=null;}catch(e){}
try{xhr[i].upload.onprogress=null; xhr[i].upload.onload=null; xhr[i].upload.onerror=null;}catch(e){}
try{xhr[i].abort();}catch(e){}
try{delete(xhr[i]);}catch(e){}
}
xhr=null;
}
}
//gets client's IP using url_getIp, then calls the done function
function getIp(done){
xhr=new XMLHttpRequest();
xhr.onload=function(){
@ -37,101 +136,184 @@ function getIp(done){
xhr.open("GET",settings.url_getIp+"?r="+Math.random(),true);
xhr.send();
}
var dlCalled=false;
//download test, calls done function when it's over
var dlCalled=false; //used to prevent multiple accidental calls to dlTest
function dlTest(done){
if(dlCalled) return; else dlCalled=true;
var firstTick=true,startT=new Date().getTime(), prevT=new Date().getTime(),prevLoaded=0,speed=0.0;
xhr=new XMLHttpRequest();
xhr.onprogress=function(event){
var instspd=event.loaded<=0?speed:((event.loaded-prevLoaded)/((new Date().getTime()-prevT)/1000.0))*1.25;
if(isNaN(instspd)||!isFinite(instspd)||instspd<0) return;
if(firstTick){
speed=instspd;
firstTick=false;
}else{
speed=speed*0.9+instspd*0.1;
}
prevLoaded=event.loaded;
prevT=new Date().getTime();
dlStatus=((speed*8)/1048576.0).toFixed(2);
if(((prevT-startT)/1000.0)>settings.time_dl){xhr.onprogress=null; xhr.onload=null; xhr.onerror=null; try{xhr.abort();}catch(e){} xhr=null; done();}
}.bind(this);
xhr.onload=function(){
prevT=new Date().getTime(); prevLoaded=0; fistTick=true;
xhr.open("GET",settings.url_dl+"?r="+Math.random(),true);
xhr.send();
}.bind(this);
xhr.onerror=function(){
dlStatus="Fail";
try{xhr.abort();}catch(e){}
xhr=null;
done();
}.bind(this);
xhr.open("GET",settings.url_dl+"?r="+Math.random(),true);
xhr.send();
if(dlCalled) return; else dlCalled=true; //dlTest already called?
var totLoaded=0.0, //total number of loaded bytes
startT=new Date().getTime(), //timestamp when test was started
failed=false; //set to true if a stream fails
xhr=[];
//function to create a download stream
var testStream=function(i,delay){
setTimeout(function(){ //delay creation of a stream slightly so that the new stream is completely detached from the one that created it
if(testStatus!=1) return; //delayed stream ended up starting after the end of the download test
if(useFetchAPI){
xhr[i]=fetch(settings.url_dl+"?r="+Math.random()+"&ckSize="+settings.garbagePhp_chunkSize).then(function(response) {
var reader = response.body.getReader();
var consume=function() {
return reader.read().then(function(result){
if(result.done) testStream(i); else{
totLoaded+=result.value.length;
if(xhr[i].canelRequested) reader.cancel();
}
return consume();
}.bind(this));
}.bind(this);
return consume();
}.bind(this));
}else{
var prevLoaded=0; //number of bytes loaded last time onprogress was called
var x=new XMLHttpRequest();
xhr[i]=x;
xhr[i].onprogress=function(event){
if(testStatus!=1){try{x.abort();}catch(e){}} //just in case this XHR is still running after the download test
//progress event, add number of new loaded bytes to totLoaded
var loadDiff=event.loaded<=0?0:(event.loaded-prevLoaded);
if(isNaN(loadDiff)||!isFinite(loadDiff)||loadDiff<0) return; //just in case
totLoaded+=loadDiff;
prevLoaded=event.loaded;
}.bind(this);
xhr[i].onload=function(){
//the large file has been loaded entirely, start again
testStream(i,0);
}.bind(this);
xhr[i].onerror=function(){
//error, abort
failed=true;
try{xhr[i].abort();}catch(e){}
delete(xhr[i]);
}.bind(this);
//send xhr
if(settings.xhr_dlUseBlob) xhr[i].responseType='blob'; else xhr[i].responseType='arraybuffer';
xhr[i].open("GET",settings.url_dl+"?r="+Math.random()+"&ckSize="+settings.garbagePhp_chunkSize,true); //random string to prevent caching
xhr[i].send();
}
}.bind(this),1+delay);
}.bind(this);
//open streams
for(var i=0;i<settings.xhr_dlMultistream;i++){
testStream(i,100*i);
}
//every 200ms, update dlStatus
interval=setInterval(function(){
var t=new Date().getTime()-startT;
if(t<200) return;
var speed=totLoaded/(t/1000.0);
dlStatus=((speed*8)/925000.0).toFixed(2); //925000 instead of 1048576 to account for overhead
if((t/1000.0)>settings.time_dl||failed){ //test is over, stop streams and timer
if(failed||isNaN(dlStatus)) dlStatus="Fail";
clearRequests();
clearInterval(interval);
done();
}
}.bind(this),200);
}
var ulCalled=false;
//upload test, calls done function whent it's over
//garbage data for upload test (1mb of random bytes repeated 20 times, for a total of 20mb)
var r=new ArrayBuffer(1048576);
try{r=new Float32Array(r);for(var i=0;i<r.length;i++)r[i]=Math.random();}catch(e){}
var req=[];
for(var i=0;i<20;i++) req.push(r);
req=new Blob(req);
var ulCalled=false; //used to prevent multiple accidental calls to ulTest
function ulTest(done){
if(ulCalled) return; else ulCalled=true;
var firstTick=true,startT=new Date().getTime(), prevT=new Date().getTime(),prevLoaded=0,speed=0.0;
xhr=new XMLHttpRequest();
xhr.upload.onprogress=function(event){
var instspd=event.loaded<=0?speed:((event.loaded-prevLoaded)/((new Date().getTime()-prevT)/1000.0))*1.25;
if(isNaN(instspd)||!isFinite(instspd)||instspd<0) return;
if(firstTick){
firstTick=false;
}else{
speed=instspd<speed?(speed*0.4+instspd*0.6):(speed*0.8+instspd*0.2);
}
prevLoaded=event.loaded;
prevT=new Date().getTime();
ulStatus=((speed*8)/1048576.0).toFixed(2);
if(((prevT-startT)/1000.0)>settings.time_ul){xhr.upload.onprogress=null; xhr.upload.onload=null; xhr.upload.onerror=null; try{xhr.abort();}catch(e){} xhr=null; done();}
}.bind(this);
xhr.upload.onload=function(){
prevT=new Date().getTime(); prevLoaded=0; fistTick=true;
xhr.open("POST",settings.url_ul+"?r="+Math.random(),true);
xhr.send(r);
}.bind(this);
xhr.upload.onerror=function(){
ulStatus="Fail";
try{xhr.abort();}catch(e){}
xhr=null;
done();
}.bind(this);
xhr.open("POST",settings.url_ul+"?r="+Math.random(),true);
xhr.setRequestHeader('Content-Encoding','identity');
var r=new ArrayBuffer(1048576);
try{r=new Float32Array(r);for(var i=0;i<r.length;i++)r[i]=Math.random();}catch(e){}
var req=[];
for(var i=0;i<20;i++) req.push(r);
req=new Blob(req);
xhr.send(req);
if(ulCalled) return; else ulCalled=true; //ulTest already called?
var totLoaded=0.0, //total number of transmitted bytes
startT=new Date().getTime(), //timestamp when test was started
failed=false; //set to true if a stream fails
xhr=[];
//function to create an upload stream
var testStream=function(i,delay){
setTimeout(function(){ //delay creation of a stream slightly so that the new stream is completely detached from the one that created it
if(testStatus!=3) return; //delayed stream ended up starting after the end of the upload test
var prevLoaded=0; //number of bytes transmitted last time onprogress was called
var x=new XMLHttpRequest();
xhr[i]=x;
xhr[i].upload.onprogress=function(event){
if(testStatus!=3){try{x.abort();}catch(e){}} //just in case this XHR is still running after the upload test
//progress event, add number of new loaded bytes to totLoaded
var loadDiff=event.loaded<=0?0:(event.loaded-prevLoaded);
if(isNaN(loadDiff)||!isFinite(loadDiff)||loadDiff<0) return; //just in case
totLoaded+=loadDiff;
prevLoaded=event.loaded;
}.bind(this);
xhr[i].upload.onload=function(){
//this stream sent all 20mb of garbage data, start again
testStream(i,0);
}.bind(this);
xhr[i].upload.onerror=function(){
//error, abort
failed=true;
try{xhr[i].abort();}catch(e){}
delete(xhr[i]);
}.bind(this);
//send xhr
xhr[i].open("POST",settings.url_ul+"?r="+Math.random(),true); //random string to prevent caching
xhr[i].setRequestHeader('Content-Encoding','identity'); //disable compression (some browsers may refuse it, but data is incompressible anyway)
xhr[i].send(req);
}.bind(this),1);
}.bind(this);
//open streams
for(var i=0;i<settings.xhr_ulMultistream;i++){
testStream(i,100*i);
}
//every 200ms, update ulStatus
interval=setInterval(function(){
var t=new Date().getTime()-startT;
if(t<200) return;
var speed=totLoaded/(t/1000.0);
ulStatus=((speed*8)/925000.0).toFixed(2); //925000 instead of 1048576 to account for overhead
if((t/1000.0)>settings.time_ul||failed){ //test is over, stop streams and timer
if(failed||isNaN(ulStatus)) ulStatus="Fail";
clearRequests();
clearInterval(interval);
done();
}
}.bind(this),200);
}
var ptCalled=false;
//ping+jitter test, function done is called when it's over
var ptCalled=false; //used to prevent multiple accidental calls to pingTest
function pingTest(done){
if(ptCalled) return; else ptCalled=true;
var prevT=null,ping=0.0,i=0;
if(ptCalled) return; else ptCalled=true; //pingTest already called?
var prevT=null, //last time a pong was received
ping=0.0, //current ping value
jitter=0.0, //current jitter value
i=0, //counter of pongs received
prevInstspd=0; //last ping time, used for jitter calculation
xhr=[];
//ping function
var doPing=function(){
prevT=new Date().getTime();
xhr=new XMLHttpRequest();
xhr.onload=function(){
xhr[0]=new XMLHttpRequest();
xhr[0].onload=function(){
//pong
if(i==0){
prevT=new Date().getTime();
prevT=new Date().getTime(); //first pong
}else{
var instspd=(new Date().getTime()-prevT)/2;
if(i==1)ping=instspd; else ping=ping*0.9+instspd*0.1;
var instjitter=Math.abs(instspd-prevInstspd);
if(i==1)ping=instspd; /*first ping, can't tell jiutter yet*/ else{
ping=ping*0.9+instspd*0.1; //ping, weighted average
jitter=instjitter>jitter?(jitter*0.2+instjitter*0.8):(jitter*0.9+instjitter*0.1); //update jitter, weighted average. spikes in ping values are given more weight.
}
prevInstspd=instspd;
}
pingStatus=ping.toFixed(2);
jitterStatus=jitter.toFixed(2);
i++;
if(i<settings.count_ping) doPing(); else done();
if(i<settings.count_ping) doPing(); else done(); //more pings to do?
}.bind(this);
xhr.onerror=function(){
xhr[0].onerror=function(){
//a ping failed, cancel test
pingStatus="Fail";
jitterStatus="Fail";
clearRequests();
done();
}.bind(this);
xhr.open("GET",settings.url_ping+"?r="+Math.random(),true);
xhr.send();
//sent xhr
xhr[0].open("GET",settings.url_ping+"?r="+Math.random(),true); //random string to prevent caching
xhr[0].send();
}.bind(this);
doPing();
}
doPing(); //start first ping
}

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