diff --git a/Frontend/speedtest_worker.js b/Frontend/speedtest_worker.js
index d3a36f7..b05af14 100644
--- a/Frontend/speedtest_worker.js
+++ b/Frontend/speedtest_worker.js
@@ -130,6 +130,10 @@ this.addEventListener("message", function(e) {
 						// ff more precise with 1 upload stream
 						settings.xhr_ulMultistream = 1;
 					}
+					if (typeof s.xhr_ulMultistream === "undefined") {
+						// ff performance API sucks
+						settings.ping_allowPerformanceApi = false;
+					}
 				}
 				if (/Edge.(\d+\.\d+)/i.test(ua)) {
 					if (typeof s.xhr_dlMultistream === "undefined") {
@@ -608,15 +612,17 @@ function pingTest(done) {
 						//try to get accurate performance timing using performance api
 						var p = performance.getEntries();
 						p = p[p.length - 1];
-						var d = p.responseStart - p.requestStart; //best precision: chromium-based
-						if (d <= 0) d = p.duration; //edge: not so good precision because it also considers the overhead and there is no way to avoid it
+						var d = p.responseStart - p.requestStart;
+						if (d <= 0) d = p.duration;
 						if (d > 0 && d < instspd) instspd = d;
 					} catch (e) {
 						//if not possible, keep the estimate
-						//firefox can't access performance api from worker: worst precision
 						tverb("Performance API not supported, using estimate");
 					}
 				}
+				//noticed that some browsers randomly have 0ms ping
+				if(instspd<1) instspd=prevInstspd;
+				if(instspd<1) instspd=1;
 				var instjitter = Math.abs(instspd - prevInstspd);
 				if (i === 1) ping = instspd;
 				/* first ping, can't tell jitter yet*/ else {
diff --git a/Frontend/speedtest_worker.min.js b/Frontend/speedtest_worker.min.js
index 9afd39e..ac4b8b1 100644
--- a/Frontend/speedtest_worker.min.js
+++ b/Frontend/speedtest_worker.min.js
@@ -1 +1 @@
-var testStatus=-1,dlStatus="",ulStatus="",pingStatus="",jitterStatus="",clientIp="",dlProgress=0,ulProgress=0,pingProgress=0,testId=null,log="";function tlog(s){2<=settings.telemetry_level&&(log+=Date.now()+": "+s+"\n")}function tverb(s){3<=settings.telemetry_level&&(log+=Date.now()+": "+s+"\n")}function twarn(s){2<=settings.telemetry_level&&(log+=Date.now()+" WARN: "+s+"\n"),console.warn(s)}var settings={test_order:"IP_D_U",time_ul_max:15,time_dl_max:15,time_auto:!0,time_ulGraceTime:3,time_dlGraceTime:1.5,count_ping:10,url_dl:"garbage.php",url_ul:"empty.php",url_ping:"empty.php",url_getIp:"getIP.php",getIp_ispInfo:!0,getIp_ispInfo_distance:"km",xhr_dlMultistream:6,xhr_ulMultistream:3,xhr_ul_sendPostRequestBeforeStartingTest:!0,xhr_multistreamDelay:300,xhr_ignoreErrors:1,xhr_dlUseBlob:!1,xhr_ul_blob_megabytes:20,garbagePhp_chunkSize:100,enable_quirks:!0,ping_allowPerformanceApi:!0,overheadCompensationFactor:1.06,useMebibits:!1,telemetry_level:0,url_telemetry:"telemetry/telemetry.php",telemetry_extra:""},xhr=null,interval=null,test_pointer=0;function url_sep(url){return url.match(/\?/)?"&":"?"}function clearRequests(){if(tverb("stopping pending XHRs"),xhr){for(var i=0;i<xhr.length;i++){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}}this.addEventListener("message",function(e){var params=e.data.split(" ");if("status"===params[0]&&postMessage(JSON.stringify({testState:testStatus,dlStatus:dlStatus,ulStatus:ulStatus,pingStatus:pingStatus,clientIp:clientIp,jitterStatus:jitterStatus,dlProgress:dlProgress,ulProgress:ulProgress,pingProgress:pingProgress,testId:testId})),"start"===params[0]&&-1===testStatus){testStatus=0;try{var s={};try{var ss=e.data.substring(5);ss&&(s=JSON.parse(ss))}catch(e){twarn("Error parsing custom settings JSON. Please check your syntax")}for(var key in s)void 0!==settings[key]?settings[key]=s[key]:twarn("Unknown setting ignored: "+key);if(settings.enable_quirks||void 0!==s.enable_quirks&&s.enable_quirks){var ua=navigator.userAgent;/Firefox.(\d+\.\d+)/i.test(ua)&&void 0===s.xhr_ulMultistream&&(settings.xhr_ulMultistream=1),/Edge.(\d+\.\d+)/i.test(ua)&&void 0===s.xhr_dlMultistream&&(settings.xhr_dlMultistream=3),/Chrome.(\d+)/i.test(ua)&&self.fetch&&void 0===s.xhr_dlMultistream&&(settings.xhr_dlMultistream=5)}/Edge.(\d+\.\d+)/i.test(ua)&&(settings.forceIE11Workaround=!0),/PlayStation 4.(\d+\.\d+)/i.test(ua)&&(settings.forceIE11Workaround=!0),/Chrome.(\d+)/i.test(ua)&&/Android|iPhone|iPad|iPod|Windows Phone/i.test(ua)&&(settings.xhr_ul_blob_megabytes=4),/^((?!chrome|android|crios|fxios).)*safari/i.test(ua)&&(settings.forceIE11Workaround=!0),void 0!==s.telemetry_level&&(settings.telemetry_level="basic"===s.telemetry_level?1:"full"===s.telemetry_level?2:"debug"===s.telemetry_level?3:0),settings.test_order=settings.test_order.toUpperCase()}catch(e){twarn("Possible error in custom test settings. Some settings might not have been applied. Exception: "+e)}tverb(JSON.stringify(settings)),test_pointer=0;var iRun=!1,dRun=!1,uRun=!1,pRun=!1,runNextTest=function(){if(5!=testStatus)if(test_pointer>=settings.test_order.length)0<settings.telemetry_level?sendTelemetry(function(id){testStatus=4,null!=id&&(testId=id)}):testStatus=4;else switch(settings.test_order.charAt(test_pointer)){case"I":if(test_pointer++,iRun)return void runNextTest();iRun=!0,getIp(runNextTest);break;case"D":if(test_pointer++,dRun)return void runNextTest();dRun=!0,testStatus=1,dlTest(runNextTest);break;case"U":if(test_pointer++,uRun)return void runNextTest();uRun=!0,testStatus=3,ulTest(runNextTest);break;case"P":if(test_pointer++,pRun)return void runNextTest();pRun=!0,testStatus=2,pingTest(runNextTest);break;case"_":test_pointer++,setTimeout(runNextTest,1e3);break;default:test_pointer++}};runNextTest()}"abort"===params[0]&&(tlog("manually aborted"),clearRequests(),runNextTest=null,interval&&clearInterval(interval),1<settings.telemetry_level&&sendTelemetry(function(){}),testStatus=5,jitterStatus=pingStatus=ulStatus=dlStatus="")});var ipCalled=!1,ispInfo="";function getIp(done){if(tverb("getIp"),!ipCalled){ipCalled=!0;var startT=(new Date).getTime();(xhr=new XMLHttpRequest).onload=function(){tlog("IP: "+xhr.responseText+", took "+((new Date).getTime()-startT)+"ms");try{var data=JSON.parse(xhr.responseText);clientIp=data.processedString,ispInfo=data.rawIspInfo}catch(e){clientIp=xhr.responseText,ispInfo=""}done()},xhr.onerror=function(){tlog("getIp failed, took "+((new Date).getTime()-startT)+"ms"),done()},xhr.open("GET",settings.url_getIp+url_sep(settings.url_getIp)+(settings.getIp_ispInfo?"isp=true"+(settings.getIp_ispInfo_distance?"&distance="+settings.getIp_ispInfo_distance+"&":"&"):"&")+"r="+Math.random(),!0),xhr.send()}}var dlCalled=!1;function dlTest(done){if(tverb("dlTest"),!dlCalled){dlCalled=!0;var totLoaded=0,startT=(new Date).getTime(),bonusT=0,graceTimeDone=!1,failed=!1;xhr=[];for(var testStream=function(i,delay){setTimeout(function(){if(1===testStatus){tverb("dl test stream started "+i+" "+delay);var prevLoaded=0,x=new XMLHttpRequest;xhr[i]=x,xhr[i].onprogress=function(event){if(tverb("dl stream progress event "+i+" "+event.loaded),1!==testStatus)try{x.abort()}catch(e){}var loadDiff=event.loaded<=0?0:event.loaded-prevLoaded;isNaN(loadDiff)||!isFinite(loadDiff)||loadDiff<0||(totLoaded+=loadDiff,prevLoaded=event.loaded)}.bind(this),xhr[i].onload=function(){tverb("dl stream finished "+i);try{xhr[i].abort()}catch(e){}testStream(i,0)}.bind(this),xhr[i].onerror=function(){tverb("dl stream failed "+i),0===settings.xhr_ignoreErrors&&(failed=!0);try{xhr[i].abort()}catch(e){}delete xhr[i],1===settings.xhr_ignoreErrors&&testStream(i,0)}.bind(this);try{settings.xhr_dlUseBlob?xhr[i].responseType="blob":xhr[i].responseType="arraybuffer"}catch(e){}xhr[i].open("GET",settings.url_dl+url_sep(settings.url_dl)+"r="+Math.random()+"&ckSize="+settings.garbagePhp_chunkSize,!0),xhr[i].send()}}.bind(this),1+delay)}.bind(this),i=0;i<settings.xhr_dlMultistream;i++)testStream(i,settings.xhr_multistreamDelay*i);interval=setInterval(function(){tverb("DL: "+dlStatus+(graceTimeDone?"":" (in grace time)"));var t=(new Date).getTime()-startT;if(graceTimeDone&&(dlProgress=(t+bonusT)/(1e3*settings.time_dl_max)),!(t<200))if(graceTimeDone){var speed=totLoaded/(t/1e3);if(settings.time_auto){var bonus=6.4*speed/1e5;bonusT+=800<bonus?800:bonus}dlStatus=(8*speed*settings.overheadCompensationFactor/(settings.useMebibits?1048576:1e6)).toFixed(2),((t+bonusT)/1e3>settings.time_dl_max||failed)&&((failed||isNaN(dlStatus))&&(dlStatus="Fail"),clearRequests(),clearInterval(interval),dlProgress=1,tlog("dlTest: "+dlStatus+", took "+((new Date).getTime()-startT)+"ms"),done())}else t>1e3*settings.time_dlGraceTime&&(0<totLoaded&&(startT=(new Date).getTime(),totLoaded=bonusT=0),graceTimeDone=!0)}.bind(this),200)}}var ulCalled=!1;function ulTest(done){if(tverb("ulTest"),!ulCalled){ulCalled=!0;var r=new ArrayBuffer(1048576),maxInt=Math.pow(2,32)-1;try{r=new Uint32Array(r);for(var i=0;i<r.length;i++)r[i]=Math.random()*maxInt}catch(e){}var req=[],reqsmall=[];for(i=0;i<settings.xhr_ul_blob_megabytes;i++)req.push(r);req=new Blob(req),r=new ArrayBuffer(262144);try{r=new Uint32Array(r);for(i=0;i<r.length;i++)r[i]=Math.random()*maxInt}catch(e){}reqsmall.push(r),reqsmall=new Blob(reqsmall);var testFunction=function(){var totLoaded=0,startT=(new Date).getTime(),bonusT=0,graceTimeDone=!1,failed=!1;xhr=[];for(var testStream=function(i,delay){setTimeout(function(){if(3===testStatus){tverb("ul test stream started "+i+" "+delay);var ie11workaround,prevLoaded=0,x=new XMLHttpRequest;if(xhr[i]=x,settings.forceIE11Workaround)ie11workaround=!0;else try{xhr[i].upload.onprogress,ie11workaround=!1}catch(e){ie11workaround=!0}if(ie11workaround){xhr[i].onload=xhr[i].onerror=function(){tverb("ul stream progress event (ie11wa)"),totLoaded+=reqsmall.size,testStream(i,0)},xhr[i].open("POST",settings.url_ul+url_sep(settings.url_ul)+"r="+Math.random(),!0);try{xhr[i].setRequestHeader("Content-Encoding","identity")}catch(e){}xhr[i].send(reqsmall)}else{xhr[i].upload.onprogress=function(event){if(tverb("ul stream progress event "+i+" "+event.loaded),3!==testStatus)try{x.abort()}catch(e){}var loadDiff=event.loaded<=0?0:event.loaded-prevLoaded;isNaN(loadDiff)||!isFinite(loadDiff)||loadDiff<0||(totLoaded+=loadDiff,prevLoaded=event.loaded)}.bind(this),xhr[i].upload.onload=function(){tverb("ul stream finished "+i),testStream(i,0)}.bind(this),xhr[i].upload.onerror=function(){tverb("ul stream failed "+i),0===settings.xhr_ignoreErrors&&(failed=!0);try{xhr[i].abort()}catch(e){}delete xhr[i],1===settings.xhr_ignoreErrors&&testStream(i,0)}.bind(this),xhr[i].open("POST",settings.url_ul+url_sep(settings.url_ul)+"r="+Math.random(),!0);try{xhr[i].setRequestHeader("Content-Encoding","identity")}catch(e){}xhr[i].send(req)}}}.bind(this),1)}.bind(this),i=0;i<settings.xhr_ulMultistream;i++)testStream(i,settings.xhr_multistreamDelay*i);interval=setInterval(function(){tverb("UL: "+ulStatus+(graceTimeDone?"":" (in grace time)"));var t=(new Date).getTime()-startT;if(graceTimeDone&&(ulProgress=(t+bonusT)/(1e3*settings.time_ul_max)),!(t<200))if(graceTimeDone){var speed=totLoaded/(t/1e3);if(settings.time_auto){var bonus=6.4*speed/1e5;bonusT+=800<bonus?800:bonus}ulStatus=(8*speed*settings.overheadCompensationFactor/(settings.useMebibits?1048576:1e6)).toFixed(2),((t+bonusT)/1e3>settings.time_ul_max||failed)&&((failed||isNaN(ulStatus))&&(ulStatus="Fail"),clearRequests(),clearInterval(interval),ulProgress=1,tlog("ulTest: "+ulStatus+", took "+((new Date).getTime()-startT)+"ms"),done())}else t>1e3*settings.time_ulGraceTime&&(0<totLoaded&&(startT=(new Date).getTime(),totLoaded=bonusT=0),graceTimeDone=!0)}.bind(this),200)}.bind(this);settings.xhr_ul_sendPostRequestBeforeStartingTest?(tverb("Sending POST request before performing upload test"),(xhr=[])[0]=new XMLHttpRequest,xhr[0].onload=xhr[0].onerror=function(){tverb("POST request sent, starting upload test"),testFunction()}.bind(this),xhr[0].open("POST",settings.url_ul),xhr[0].send()):testFunction()}}var ptCalled=!1;function pingTest(done){if(tverb("pingTest"),!ptCalled){ptCalled=!0;var startT=(new Date).getTime(),prevT=null,ping=0,jitter=0,i=0,prevInstspd=0;xhr=[];var doPing=function(){tverb("ping"),pingProgress=i/settings.count_ping,prevT=(new Date).getTime(),xhr[0]=new XMLHttpRequest,xhr[0].onload=function(){if(tverb("pong"),0===i)prevT=(new Date).getTime();else{var instspd=(new Date).getTime()-prevT;if(settings.ping_allowPerformanceApi)try{var p=performance.getEntries(),d=(p=p[p.length-1]).responseStart-p.requestStart;d<=0&&(d=p.duration),0<d&&d<instspd&&(instspd=d)}catch(e){tverb("Performance API not supported, using estimate")}var instjitter=Math.abs(instspd-prevInstspd);1===i?ping=instspd:(ping=instspd<ping?instspd:.8*ping+.2*instspd,jitter=2===i?instjitter:jitter<instjitter?.3*jitter+.7*instjitter:.8*jitter+.2*instjitter),prevInstspd=instspd}pingStatus=ping.toFixed(2),jitterStatus=jitter.toFixed(2),i++,tverb("ping: "+pingStatus+" jitter: "+jitterStatus),i<settings.count_ping?doPing():(pingProgress=1,tlog("ping: "+pingStatus+" jitter: "+jitterStatus+", took "+((new Date).getTime()-startT)+"ms"),done())}.bind(this),xhr[0].onerror=function(){tverb("ping failed"),0===settings.xhr_ignoreErrors&&(jitterStatus=pingStatus="Fail",clearRequests(),tlog("ping test failed, took "+((new Date).getTime()-startT)+"ms"),pingProgress=1,done()),1===settings.xhr_ignoreErrors&&doPing(),2===settings.xhr_ignoreErrors&&(++i<settings.count_ping?doPing():(pingProgress=1,tlog("ping: "+pingStatus+" jitter: "+jitterStatus+", took "+((new Date).getTime()-startT)+"ms"),done()))}.bind(this),xhr[0].open("GET",settings.url_ping+url_sep(settings.url_ping)+"r="+Math.random(),!0),xhr[0].send()}.bind(this);doPing()}}function sendTelemetry(done){if(!(settings.telemetry_level<1)){(xhr=new XMLHttpRequest).onload=function(){try{var parts=xhr.responseText.split(" ");if("id"==parts[0])try{var id=parts[1];done(id)}catch(e){done(null)}else done(null)}catch(e){done(null)}},xhr.onerror=function(){console.log("TELEMETRY ERROR "+xhr.status),done(null)},xhr.open("POST",settings.url_telemetry+url_sep(settings.url_telemetry)+"r="+Math.random(),!0);var telemetryIspInfo={processedString:clientIp,rawIspInfo:"object"==typeof ispInfo?ispInfo:""};try{var fd=new FormData;fd.append("ispinfo",JSON.stringify(telemetryIspInfo)),fd.append("dl",dlStatus),fd.append("ul",ulStatus),fd.append("ping",pingStatus),fd.append("jitter",jitterStatus),fd.append("log",1<settings.telemetry_level?log:""),fd.append("extra",settings.telemetry_extra),xhr.send(fd)}catch(ex){var postData="extra="+encodeURIComponent(settings.telemetry_extra)+"&ispinfo="+encodeURIComponent(JSON.stringify(telemetryIspInfo))+"&dl="+encodeURIComponent(dlStatus)+"&ul="+encodeURIComponent(ulStatus)+"&ping="+encodeURIComponent(pingStatus)+"&jitter="+encodeURIComponent(jitterStatus)+"&log="+encodeURIComponent(1<settings.telemetry_level?log:"");xhr.setRequestHeader("Content-Type","application/x-www-form-urlencoded"),xhr.send(postData)}}}
\ No newline at end of file
+var testStatus=-1,dlStatus="",ulStatus="",pingStatus="",jitterStatus="",clientIp="",dlProgress=0,ulProgress=0,pingProgress=0,testId=null,log="";function tlog(s){2<=settings.telemetry_level&&(log+=Date.now()+": "+s+"\n")}function tverb(s){3<=settings.telemetry_level&&(log+=Date.now()+": "+s+"\n")}function twarn(s){2<=settings.telemetry_level&&(log+=Date.now()+" WARN: "+s+"\n"),console.warn(s)}var settings={test_order:"IP_D_U",time_ul_max:15,time_dl_max:15,time_auto:!0,time_ulGraceTime:3,time_dlGraceTime:1.5,count_ping:10,url_dl:"garbage.php",url_ul:"empty.php",url_ping:"empty.php",url_getIp:"getIP.php",getIp_ispInfo:!0,getIp_ispInfo_distance:"km",xhr_dlMultistream:6,xhr_ulMultistream:3,xhr_ul_sendPostRequestBeforeStartingTest:!0,xhr_multistreamDelay:300,xhr_ignoreErrors:1,xhr_dlUseBlob:!1,xhr_ul_blob_megabytes:20,garbagePhp_chunkSize:100,enable_quirks:!0,ping_allowPerformanceApi:!0,overheadCompensationFactor:1.06,useMebibits:!1,telemetry_level:0,url_telemetry:"telemetry/telemetry.php",telemetry_extra:""},xhr=null,interval=null,test_pointer=0;function url_sep(url){return url.match(/\?/)?"&":"?"}function clearRequests(){if(tverb("stopping pending XHRs"),xhr){for(var i=0;i<xhr.length;i++){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}}this.addEventListener("message",function(e){var params=e.data.split(" ");if("status"===params[0]&&postMessage(JSON.stringify({testState:testStatus,dlStatus:dlStatus,ulStatus:ulStatus,pingStatus:pingStatus,clientIp:clientIp,jitterStatus:jitterStatus,dlProgress:dlProgress,ulProgress:ulProgress,pingProgress:pingProgress,testId:testId})),"start"===params[0]&&-1===testStatus){testStatus=0;try{var s={};try{var ss=e.data.substring(5);ss&&(s=JSON.parse(ss))}catch(e){twarn("Error parsing custom settings JSON. Please check your syntax")}for(var key in s)void 0!==settings[key]?settings[key]=s[key]:twarn("Unknown setting ignored: "+key);if(settings.enable_quirks||void 0!==s.enable_quirks&&s.enable_quirks){var ua=navigator.userAgent;/Firefox.(\d+\.\d+)/i.test(ua)&&(void 0===s.xhr_ulMultistream&&(settings.xhr_ulMultistream=1),void 0===s.xhr_ulMultistream&&(settings.ping_allowPerformanceApi=!1)),/Edge.(\d+\.\d+)/i.test(ua)&&void 0===s.xhr_dlMultistream&&(settings.xhr_dlMultistream=3),/Chrome.(\d+)/i.test(ua)&&self.fetch&&void 0===s.xhr_dlMultistream&&(settings.xhr_dlMultistream=5)}/Edge.(\d+\.\d+)/i.test(ua)&&(settings.forceIE11Workaround=!0),/PlayStation 4.(\d+\.\d+)/i.test(ua)&&(settings.forceIE11Workaround=!0),/Chrome.(\d+)/i.test(ua)&&/Android|iPhone|iPad|iPod|Windows Phone/i.test(ua)&&(settings.xhr_ul_blob_megabytes=4),/^((?!chrome|android|crios|fxios).)*safari/i.test(ua)&&(settings.forceIE11Workaround=!0),void 0!==s.telemetry_level&&(settings.telemetry_level="basic"===s.telemetry_level?1:"full"===s.telemetry_level?2:"debug"===s.telemetry_level?3:0),settings.test_order=settings.test_order.toUpperCase()}catch(e){twarn("Possible error in custom test settings. Some settings might not have been applied. Exception: "+e)}tverb(JSON.stringify(settings)),test_pointer=0;var iRun=!1,dRun=!1,uRun=!1,pRun=!1,runNextTest=function(){if(5!=testStatus)if(test_pointer>=settings.test_order.length)0<settings.telemetry_level?sendTelemetry(function(id){testStatus=4,null!=id&&(testId=id)}):testStatus=4;else switch(settings.test_order.charAt(test_pointer)){case"I":if(test_pointer++,iRun)return void runNextTest();iRun=!0,getIp(runNextTest);break;case"D":if(test_pointer++,dRun)return void runNextTest();dRun=!0,testStatus=1,dlTest(runNextTest);break;case"U":if(test_pointer++,uRun)return void runNextTest();uRun=!0,testStatus=3,ulTest(runNextTest);break;case"P":if(test_pointer++,pRun)return void runNextTest();pRun=!0,testStatus=2,pingTest(runNextTest);break;case"_":test_pointer++,setTimeout(runNextTest,1e3);break;default:test_pointer++}};runNextTest()}"abort"===params[0]&&(tlog("manually aborted"),clearRequests(),runNextTest=null,interval&&clearInterval(interval),1<settings.telemetry_level&&sendTelemetry(function(){}),testStatus=5,jitterStatus=pingStatus=ulStatus=dlStatus="")});var ipCalled=!1,ispInfo="";function getIp(done){if(tverb("getIp"),!ipCalled){ipCalled=!0;var startT=(new Date).getTime();(xhr=new XMLHttpRequest).onload=function(){tlog("IP: "+xhr.responseText+", took "+((new Date).getTime()-startT)+"ms");try{var data=JSON.parse(xhr.responseText);clientIp=data.processedString,ispInfo=data.rawIspInfo}catch(e){clientIp=xhr.responseText,ispInfo=""}done()},xhr.onerror=function(){tlog("getIp failed, took "+((new Date).getTime()-startT)+"ms"),done()},xhr.open("GET",settings.url_getIp+url_sep(settings.url_getIp)+(settings.getIp_ispInfo?"isp=true"+(settings.getIp_ispInfo_distance?"&distance="+settings.getIp_ispInfo_distance+"&":"&"):"&")+"r="+Math.random(),!0),xhr.send()}}var dlCalled=!1;function dlTest(done){if(tverb("dlTest"),!dlCalled){dlCalled=!0;var totLoaded=0,startT=(new Date).getTime(),bonusT=0,graceTimeDone=!1,failed=!1;xhr=[];for(var testStream=function(i,delay){setTimeout(function(){if(1===testStatus){tverb("dl test stream started "+i+" "+delay);var prevLoaded=0,x=new XMLHttpRequest;xhr[i]=x,xhr[i].onprogress=function(event){if(tverb("dl stream progress event "+i+" "+event.loaded),1!==testStatus)try{x.abort()}catch(e){}var loadDiff=event.loaded<=0?0:event.loaded-prevLoaded;isNaN(loadDiff)||!isFinite(loadDiff)||loadDiff<0||(totLoaded+=loadDiff,prevLoaded=event.loaded)}.bind(this),xhr[i].onload=function(){tverb("dl stream finished "+i);try{xhr[i].abort()}catch(e){}testStream(i,0)}.bind(this),xhr[i].onerror=function(){tverb("dl stream failed "+i),0===settings.xhr_ignoreErrors&&(failed=!0);try{xhr[i].abort()}catch(e){}delete xhr[i],1===settings.xhr_ignoreErrors&&testStream(i,0)}.bind(this);try{settings.xhr_dlUseBlob?xhr[i].responseType="blob":xhr[i].responseType="arraybuffer"}catch(e){}xhr[i].open("GET",settings.url_dl+url_sep(settings.url_dl)+"r="+Math.random()+"&ckSize="+settings.garbagePhp_chunkSize,!0),xhr[i].send()}}.bind(this),1+delay)}.bind(this),i=0;i<settings.xhr_dlMultistream;i++)testStream(i,settings.xhr_multistreamDelay*i);interval=setInterval(function(){tverb("DL: "+dlStatus+(graceTimeDone?"":" (in grace time)"));var t=(new Date).getTime()-startT;if(graceTimeDone&&(dlProgress=(t+bonusT)/(1e3*settings.time_dl_max)),!(t<200))if(graceTimeDone){var speed=totLoaded/(t/1e3);if(settings.time_auto){var bonus=6.4*speed/1e5;bonusT+=800<bonus?800:bonus}dlStatus=(8*speed*settings.overheadCompensationFactor/(settings.useMebibits?1048576:1e6)).toFixed(2),((t+bonusT)/1e3>settings.time_dl_max||failed)&&((failed||isNaN(dlStatus))&&(dlStatus="Fail"),clearRequests(),clearInterval(interval),dlProgress=1,tlog("dlTest: "+dlStatus+", took "+((new Date).getTime()-startT)+"ms"),done())}else t>1e3*settings.time_dlGraceTime&&(0<totLoaded&&(startT=(new Date).getTime(),totLoaded=bonusT=0),graceTimeDone=!0)}.bind(this),200)}}var ulCalled=!1;function ulTest(done){if(tverb("ulTest"),!ulCalled){ulCalled=!0;var r=new ArrayBuffer(1048576),maxInt=Math.pow(2,32)-1;try{r=new Uint32Array(r);for(var i=0;i<r.length;i++)r[i]=Math.random()*maxInt}catch(e){}var req=[],reqsmall=[];for(i=0;i<settings.xhr_ul_blob_megabytes;i++)req.push(r);req=new Blob(req),r=new ArrayBuffer(262144);try{r=new Uint32Array(r);for(i=0;i<r.length;i++)r[i]=Math.random()*maxInt}catch(e){}reqsmall.push(r),reqsmall=new Blob(reqsmall);var testFunction=function(){var totLoaded=0,startT=(new Date).getTime(),bonusT=0,graceTimeDone=!1,failed=!1;xhr=[];for(var testStream=function(i,delay){setTimeout(function(){if(3===testStatus){tverb("ul test stream started "+i+" "+delay);var ie11workaround,prevLoaded=0,x=new XMLHttpRequest;if(xhr[i]=x,settings.forceIE11Workaround)ie11workaround=!0;else try{xhr[i].upload.onprogress,ie11workaround=!1}catch(e){ie11workaround=!0}if(ie11workaround){xhr[i].onload=xhr[i].onerror=function(){tverb("ul stream progress event (ie11wa)"),totLoaded+=reqsmall.size,testStream(i,0)},xhr[i].open("POST",settings.url_ul+url_sep(settings.url_ul)+"r="+Math.random(),!0);try{xhr[i].setRequestHeader("Content-Encoding","identity")}catch(e){}xhr[i].send(reqsmall)}else{xhr[i].upload.onprogress=function(event){if(tverb("ul stream progress event "+i+" "+event.loaded),3!==testStatus)try{x.abort()}catch(e){}var loadDiff=event.loaded<=0?0:event.loaded-prevLoaded;isNaN(loadDiff)||!isFinite(loadDiff)||loadDiff<0||(totLoaded+=loadDiff,prevLoaded=event.loaded)}.bind(this),xhr[i].upload.onload=function(){tverb("ul stream finished "+i),testStream(i,0)}.bind(this),xhr[i].upload.onerror=function(){tverb("ul stream failed "+i),0===settings.xhr_ignoreErrors&&(failed=!0);try{xhr[i].abort()}catch(e){}delete xhr[i],1===settings.xhr_ignoreErrors&&testStream(i,0)}.bind(this),xhr[i].open("POST",settings.url_ul+url_sep(settings.url_ul)+"r="+Math.random(),!0);try{xhr[i].setRequestHeader("Content-Encoding","identity")}catch(e){}xhr[i].send(req)}}}.bind(this),1)}.bind(this),i=0;i<settings.xhr_ulMultistream;i++)testStream(i,settings.xhr_multistreamDelay*i);interval=setInterval(function(){tverb("UL: "+ulStatus+(graceTimeDone?"":" (in grace time)"));var t=(new Date).getTime()-startT;if(graceTimeDone&&(ulProgress=(t+bonusT)/(1e3*settings.time_ul_max)),!(t<200))if(graceTimeDone){var speed=totLoaded/(t/1e3);if(settings.time_auto){var bonus=6.4*speed/1e5;bonusT+=800<bonus?800:bonus}ulStatus=(8*speed*settings.overheadCompensationFactor/(settings.useMebibits?1048576:1e6)).toFixed(2),((t+bonusT)/1e3>settings.time_ul_max||failed)&&((failed||isNaN(ulStatus))&&(ulStatus="Fail"),clearRequests(),clearInterval(interval),ulProgress=1,tlog("ulTest: "+ulStatus+", took "+((new Date).getTime()-startT)+"ms"),done())}else t>1e3*settings.time_ulGraceTime&&(0<totLoaded&&(startT=(new Date).getTime(),totLoaded=bonusT=0),graceTimeDone=!0)}.bind(this),200)}.bind(this);settings.xhr_ul_sendPostRequestBeforeStartingTest?(tverb("Sending POST request before performing upload test"),(xhr=[])[0]=new XMLHttpRequest,xhr[0].onload=xhr[0].onerror=function(){tverb("POST request sent, starting upload test"),testFunction()}.bind(this),xhr[0].open("POST",settings.url_ul),xhr[0].send()):testFunction()}}var ptCalled=!1;function pingTest(done){if(tverb("pingTest"),!ptCalled){ptCalled=!0;var startT=(new Date).getTime(),prevT=null,ping=0,jitter=0,i=0,prevInstspd=0;xhr=[];var doPing=function(){tverb("ping"),pingProgress=i/settings.count_ping,prevT=(new Date).getTime(),xhr[0]=new XMLHttpRequest,xhr[0].onload=function(){if(tverb("pong"),0===i)prevT=(new Date).getTime();else{var instspd=(new Date).getTime()-prevT;if(settings.ping_allowPerformanceApi)try{var p=performance.getEntries(),d=(p=p[p.length-1]).responseStart-p.requestStart;d<=0&&(d=p.duration),0<d&&d<instspd&&(instspd=d)}catch(e){tverb("Performance API not supported, using estimate")}instspd<1&&(instspd=prevInstspd),instspd<1&&(instspd=1);var instjitter=Math.abs(instspd-prevInstspd);1===i?ping=instspd:(ping=instspd<ping?instspd:.8*ping+.2*instspd,jitter=2===i?instjitter:jitter<instjitter?.3*jitter+.7*instjitter:.8*jitter+.2*instjitter),prevInstspd=instspd}pingStatus=ping.toFixed(2),jitterStatus=jitter.toFixed(2),i++,tverb("ping: "+pingStatus+" jitter: "+jitterStatus),i<settings.count_ping?doPing():(pingProgress=1,tlog("ping: "+pingStatus+" jitter: "+jitterStatus+", took "+((new Date).getTime()-startT)+"ms"),done())}.bind(this),xhr[0].onerror=function(){tverb("ping failed"),0===settings.xhr_ignoreErrors&&(jitterStatus=pingStatus="Fail",clearRequests(),tlog("ping test failed, took "+((new Date).getTime()-startT)+"ms"),pingProgress=1,done()),1===settings.xhr_ignoreErrors&&doPing(),2===settings.xhr_ignoreErrors&&(++i<settings.count_ping?doPing():(pingProgress=1,tlog("ping: "+pingStatus+" jitter: "+jitterStatus+", took "+((new Date).getTime()-startT)+"ms"),done()))}.bind(this),xhr[0].open("GET",settings.url_ping+url_sep(settings.url_ping)+"r="+Math.random(),!0),xhr[0].send()}.bind(this);doPing()}}function sendTelemetry(done){if(!(settings.telemetry_level<1)){(xhr=new XMLHttpRequest).onload=function(){try{var parts=xhr.responseText.split(" ");if("id"==parts[0])try{var id=parts[1];done(id)}catch(e){done(null)}else done(null)}catch(e){done(null)}},xhr.onerror=function(){console.log("TELEMETRY ERROR "+xhr.status),done(null)},xhr.open("POST",settings.url_telemetry+url_sep(settings.url_telemetry)+"r="+Math.random(),!0);var telemetryIspInfo={processedString:clientIp,rawIspInfo:"object"==typeof ispInfo?ispInfo:""};try{var fd=new FormData;fd.append("ispinfo",JSON.stringify(telemetryIspInfo)),fd.append("dl",dlStatus),fd.append("ul",ulStatus),fd.append("ping",pingStatus),fd.append("jitter",jitterStatus),fd.append("log",1<settings.telemetry_level?log:""),fd.append("extra",settings.telemetry_extra),xhr.send(fd)}catch(ex){var postData="extra="+encodeURIComponent(settings.telemetry_extra)+"&ispinfo="+encodeURIComponent(JSON.stringify(telemetryIspInfo))+"&dl="+encodeURIComponent(dlStatus)+"&ul="+encodeURIComponent(ulStatus)+"&ping="+encodeURIComponent(pingStatus)+"&jitter="+encodeURIComponent(jitterStatus)+"&log="+encodeURIComponent(1<settings.telemetry_level?log:"");xhr.setRequestHeader("Content-Type","application/x-www-form-urlencoded"),xhr.send(postData)}}}
\ No newline at end of file