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);
varie11workaround;
try{
xhr[i].upload.onprogress;
ie11workaround=false;
}catch(e){
ie11workaround=true;
}
if(ie11workaround){
//IE11 workarond: xhr.upload does not work properly, therefore we send a bunch of small 256k requests and use the onload event as progress. This is not precise, especially on fast connections
xhr[i].onload=function(){
totLoaded+=262144;
testStream(i,0);
}
xhr[i].onerror=function(){
//error, abort
failed=true;
try{xhr[i].abort();}catch(e){}
delete(xhr[i]);
}
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(reqsmall);
}else{
//REGULAR version, no workaround
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
