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/ *
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HTML5 Speedtest v4 . 7 MPOT
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by Federico Dossena
https : //github.com/adolfintel/speedtest/
GNU LGPLv3 License
* /
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// data reported to main thread
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var testStatus = - 1 // -1=not started, 0=starting, 1=download test, 2=ping+jitter test, 3=upload test, 4=finished, 5=abort/error
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var dlStatus = '' // download speed in megabit/s with 2 decimal digits
var ulStatus = '' // upload speed in megabit/s with 2 decimal digits
var pingStatus = '' // ping in milliseconds with 2 decimal digits
var jitterStatus = '' // jitter in milliseconds with 2 decimal digits
var clientIp = '' // client's IP address as reported by getIP.php
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var dlProgress = 0 //progress of download test 0-1
var ulProgress = 0 //progress of upload test 0-1
var pingProgress = 0 //progress of ping+jitter test 0-1
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var testId = 'noID' //test ID (sent back by telemetry if used, the string 'noID' otherwise)
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var log = '' //telemetry log
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function tlog ( s ) { if ( settings . telemetry _level >= 2 ) { log += Date . now ( ) + ': ' + s + '\n' } }
function tverb ( s ) { if ( settings . telemetry _level >= 3 ) { log += Date . now ( ) + ': ' + s + '\n' } }
function twarn ( s ) { if ( settings . telemetry _level >= 2 ) { log += Date . now ( ) + ' WARN: ' + s + '\n' ; } console . warn ( s ) }
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// test settings. can be overridden by sending specific values with the start command
var settings = {
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test _order : "IP_D_U" , //order in which tests will be performed as a string. D=Download, U=Upload, P=Ping+Jitter, I=IP, _=1 second delay
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time _ul _max : 15 , // max duration of upload test in seconds
time _dl _max : 15 , // max duration of download test in seconds
time _auto : true , // if set to true, tests will take less time on faster connections
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time _ulGraceTime : 3 , //time to wait in seconds before actually measuring ul speed (wait for buffers to fill)
time _dlGraceTime : 1.5 , //time to wait in seconds before actually measuring dl speed (wait for TCP window to increase)
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count _ping : 10 , // number of pings to perform in ping test
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url _dl : 'garbage.php' , // path to a large file or garbage.php, used for download test. must be relative to this js file
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url _ul : 'empty.php' , // path to an empty file, used for upload test. must be relative to this js file
url _ping : 'empty.php' , // path to an empty file, used for ping test. must be relative to this js file
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url _getIp : 'getIP.php' , // path to getIP.php relative to this js file, or a similar thing that outputs the client's ip
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getIp _ispInfo : true , //if set to true, the server will include ISP info with the IP address
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getIp _ispInfo _distance : 'km' , //km or mi=estimate distance from server in km/mi; set to false to disable distance estimation. getIp_ispInfo must be enabled in order for this to work
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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)
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xhr _ul _sendPostRequestBeforeStartingTest : true , //if set to true, a single empty POST request will be sent to the upload test URL. This bypasses bugs with CORS headers in some browsers.
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xhr _multistreamDelay : 300 , //how much concurrent requests should be delayed
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xhr _ignoreErrors : 1 , // 0=fail on errors, 1=attempt to restart a stream if it fails, 2=ignore all errors
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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)
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xhr _ul _blob _megabytes : 20 , //size in megabytes of the upload blobs sent in the upload test (forced to 4 on chrome mobile)
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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
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ping _allowPerformanceApi : true , // if enabled, the ping test will attempt to calculate the ping more precisely using the Performance API. Currently works perfectly in Chrome, badly in Edge, and not at all in Firefox. If Performance API is not supported or the result is obviously wrong, a fallback is provided.
overheadCompensationFactor : 1.06 , //can be changed to compensatie for transport overhead. (see doc.md for some other values)
useMebibits : false , //if set to true, speed will be reported in mebibits/s instead of megabits/s
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telemetry _level : 0 , // 0=disabled, 1=basic (results only), 2=full (results and timing) 3=debug (results+log)
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url _telemetry : 'telemetry/telemetry.php' , // path to the script that adds telemetry data to the database
telemetry _extra : '' //extra data that can be passed to the telemetry through the settings
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}
var xhr = null // array of currently active xhr requests
var interval = null // timer used in tests
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var test _pointer = 0 //pointer to the next test to run inside settings.test_order
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/ *
this function is used on URLs passed in the settings to determine whether we need a ? or an & as a separator
* /
function url _sep ( url ) { return url . match ( /\?/ ) ? '&' : '?' ; }
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/ *
listener for commands from main thread to this worker .
commands :
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- status : returns the current status as a JSON string containing testStatus , dlStatus , ulStatus , pingStatus , clientIp , jitterStatus , dlProgress , ulProgress , pingProgress
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- abort : aborts the current test
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- start : starts the test . optionally , settings can be passed as JSON .
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example : start { "time_ul_max" : "10" , "time_dl_max" : "10" , "count_ping" : "50" }
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* /
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this . addEventListener ( 'message' , function ( e ) {
var params = e . data . split ( ' ' )
if ( params [ 0 ] === 'status' ) { // return status
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postMessage ( JSON . stringify ( {
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testState : testStatus ,
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dlStatus : dlStatus ,
ulStatus : ulStatus ,
pingStatus : pingStatus ,
clientIp : clientIp ,
jitterStatus : jitterStatus ,
dlProgress : dlProgress ,
ulProgress : ulProgress ,
pingProgress : pingProgress ,
testId : testId
} ) )
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}
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if ( params [ 0 ] === 'start' && testStatus === - 1 ) { // start new test
testStatus = 0
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try {
// parse settings, if present
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var s = { }
try {
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var ss = e . data . substring ( 5 )
if ( ss ) s = JSON . parse ( ss )
} catch ( e ) { twarn ( 'Error parsing custom settings JSON. Please check your syntax' ) }
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//copy custom settings
for ( var key in s ) {
if ( typeof settings [ key ] !== 'undefined' ) settings [ key ] = s [ key ] ; else twarn ( "Unknown setting ignored: " + key ) ;
}
// quirks for specific browsers. apply only if not overridden. more may be added in future releases
if ( settings . enable _quirks || ( typeof s . enable _quirks !== 'undefined' && s . enable _quirks ) ) {
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var ua = navigator . userAgent
if ( /Firefox.(\d+\.\d+)/i . test ( ua ) ) {
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if ( typeof s . xhr _ulMultistream === 'undefined' ) {
// ff more precise with 1 upload stream
settings . xhr _ulMultistream = 1
}
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}
if ( /Edge.(\d+\.\d+)/i . test ( ua ) ) {
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if ( typeof s . xhr _dlMultistream === 'undefined' ) {
// edge more precise with 3 download streams
settings . xhr _dlMultistream = 3
}
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}
if ( /Chrome.(\d+)/i . test ( ua ) && ( ! ! self . fetch ) ) {
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if ( typeof s . xhr _dlMultistream === 'undefined' ) {
// chrome more precise with 5 streams
settings . xhr _dlMultistream = 5
}
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}
}
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if ( /Edge.(\d+\.\d+)/i . test ( ua ) ) {
//Edge 15 introduced a bug that causes onprogress events to not get fired, we have to use the "small chunks" workaround that reduces accuracy
settings . forceIE11Workaround = true
}
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if ( /Chrome.(\d+)/i . test ( ua ) && /Android|iPhone|iPad|iPod|Windows Phone/i . test ( ua ) ) { //cheap af
//Chrome mobile introduced a limitation somewhere around version 65, we have to limit XHR upload size to 4 megabytes
settings . xhr _ul _blob _megabytes = 4 ;
}
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if ( /^((?!chrome|android|crios|fxios).)*safari/i . test ( ua ) ) {
//Safari also needs the IE11 workaround but only for the MPOT version
settings . forceIE11Workaround = true
}
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//telemetry_level has to be parsed and not just copied
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if ( typeof s . telemetry _level !== 'undefined' ) settings . telemetry _level = s . telemetry _level === 'basic' ? 1 : s . telemetry _level === 'full' ? 2 : s . telemetry _level === 'debug' ? 3 : 0 ; // telemetry level
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//transform test_order to uppercase, just in case
settings . test _order = settings . test _order . toUpperCase ( ) ;
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} catch ( e ) { twarn ( 'Possible error in custom test settings. Some settings might not have been applied. Exception: ' + e ) }
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// run the tests
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tverb ( JSON . stringify ( settings ) )
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test _pointer = 0 ;
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var iRun = false , dRun = false , uRun = false , pRun = false ;
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var runNextTest = function ( ) {
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if ( testStatus == 5 ) return ;
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if ( test _pointer >= settings . test _order . length ) { //test is finished
if ( settings . telemetry _level > 0 )
sendTelemetry ( function ( id ) { testStatus = 4 ; if ( id != - 1 ) testId = id } )
else testStatus = 4
return ;
}
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switch ( settings . test _order . charAt ( test _pointer ) ) {
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case 'I' : { test _pointer ++ ; if ( iRun ) { runNextTest ( ) ; return ; } else iRun = true ; getIp ( runNextTest ) ; } break ;
case 'D' : { test _pointer ++ ; if ( dRun ) { runNextTest ( ) ; return ; } else dRun = true ; testStatus = 1 ; dlTest ( runNextTest ) ; } break ;
case 'U' : { test _pointer ++ ; if ( uRun ) { runNextTest ( ) ; return ; } else uRun = true ; testStatus = 3 ; ulTest ( runNextTest ) ; } break ;
case 'P' : { test _pointer ++ ; if ( pRun ) { runNextTest ( ) ; return ; } else pRun = true ; testStatus = 2 ; pingTest ( runNextTest ) ; } break ;
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case '_' : { test _pointer ++ ; setTimeout ( runNextTest , 1000 ) ; } break ;
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default : test _pointer ++ ;
}
}
runNextTest ( )
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}
if ( params [ 0 ] === 'abort' ) { // abort command
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tlog ( 'manually aborted' )
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clearRequests ( ) // stop all xhr activity
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runNextTest = null ;
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if ( interval ) clearInterval ( interval ) // clear timer if present
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if ( settings . telemetry _level > 1 ) sendTelemetry ( function ( ) { } )
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testStatus = 5 ; dlStatus = '' ; ulStatus = '' ; pingStatus = '' ; jitterStatus = '' // set test as aborted
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}
} )
// stops all XHR activity, aggressively
function clearRequests ( ) {
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tverb ( 'stopping pending XHRs' )
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if ( 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
}
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}
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// gets client's IP using url_getIp, then calls the done function
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var ipCalled = false // used to prevent multiple accidental calls to getIp
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var ispInfo = "" ; //used for telemetry
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function getIp ( done ) {
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tverb ( 'getIp' )
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if ( ipCalled ) return ; else ipCalled = true // getIp already called?
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var startT = new Date ( ) . getTime ( ) ;
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xhr = new XMLHttpRequest ( )
xhr . onload = function ( ) {
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tlog ( 'IP: ' + xhr . responseText + ', took ' + ( new Date ( ) . getTime ( ) - startT ) + 'ms' )
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try {
var data = JSON . parse ( xhr . responseText )
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clientIp = data . processedString
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ispInfo = data . rawIspInfo
} catch ( e ) {
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clientIp = xhr . responseText
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ispInfo = ''
}
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done ( )
}
xhr . onerror = function ( ) {
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tlog ( 'getIp failed, took ' + ( new Date ( ) . getTime ( ) - startT ) + 'ms' )
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done ( )
}
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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 ( ) , true )
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xhr . send ( )
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}
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// download test, calls done function when it's over
var dlCalled = false // used to prevent multiple accidental calls to dlTest
function dlTest ( done ) {
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tverb ( 'dlTest' )
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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
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bonusT = 0 , //how many milliseconds the test has been shortened by (higher on faster connections)
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graceTimeDone = false , //set to true after the grace time is past
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failed = false // set to true if a stream fails
xhr = [ ]
// function to create a download stream. streams are slightly delayed so that they will not end at the same time
var testStream = function ( i , delay ) {
setTimeout ( function ( ) {
if ( testStatus !== 1 ) return // delayed stream ended up starting after the end of the download test
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tverb ( 'dl test stream started ' + i + ' ' + delay )
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var prevLoaded = 0 // number of bytes loaded last time onprogress was called
var x = new XMLHttpRequest ( )
xhr [ i ] = x
xhr [ i ] . onprogress = function ( event ) {
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tverb ( 'dl stream progress event ' + i + ' ' + event . loaded )
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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
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tverb ( 'dl stream finished ' + i )
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try { xhr [ i ] . abort ( ) } catch ( e ) { } // reset the stream data to empty ram
testStream ( i , 0 )
} . bind ( this )
xhr [ i ] . onerror = function ( ) {
// error
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tverb ( 'dl stream failed ' + i )
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if ( settings . xhr _ignoreErrors === 0 ) failed = true //abort
try { xhr [ i ] . abort ( ) } catch ( e ) { }
delete ( xhr [ i ] )
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if ( settings . xhr _ignoreErrors === 1 ) testStream ( i , 0 ) //restart stream
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} . bind ( this )
// send xhr
try { if ( settings . xhr _dlUseBlob ) xhr [ i ] . responseType = 'blob' ; else 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 , true ) // random string to prevent caching
xhr [ i ] . send ( )
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} . bind ( this ) , 1 + delay )
} . bind ( this )
// open streams
for ( var i = 0 ; i < settings . xhr _dlMultistream ; i ++ ) {
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testStream ( i , settings . xhr _multistreamDelay * i )
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}
// every 200ms, update dlStatus
interval = setInterval ( function ( ) {
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tverb ( 'DL: ' + dlStatus + ( graceTimeDone ? '' : ' (in grace time)' ) )
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var t = new Date ( ) . getTime ( ) - startT
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if ( graceTimeDone ) dlProgress = ( t + bonusT ) / ( settings . time _dl _max * 1000 )
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if ( t < 200 ) return
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if ( ! graceTimeDone ) {
if ( t > 1000 * settings . time _dlGraceTime ) {
if ( totLoaded > 0 ) { // if the connection is so slow that we didn't get a single chunk yet, do not reset
startT = new Date ( ) . getTime ( )
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bonusT = 0
totLoaded = 0.0
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}
graceTimeDone = true ;
}
} else {
var speed = totLoaded / ( t / 1000.0 )
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if ( settings . time _auto ) {
//decide how much to shorten the test. Every 200ms, the test is shortened by the bonusT calculated here
var bonus = 6.4 * speed / 100000
bonusT += bonus > 800 ? 800 : bonus
}
//update status
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dlStatus = ( ( speed * 8 * settings . overheadCompensationFactor ) / ( settings . useMebibits ? 1048576 : 1000000 ) ) . toFixed ( 2 ) // speed is multiplied by 8 to go from bytes to bits, overhead compensation is applied, then everything is divided by 1048576 or 1000000 to go to megabits/mebibits
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if ( ( ( ( t + bonusT ) / 1000.0 ) > settings . time _dl _max ) || failed ) { // test is over, stop streams and timer
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if ( failed || isNaN ( dlStatus ) ) dlStatus = 'Fail'
clearRequests ( )
clearInterval ( interval )
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dlProgress = 1
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tlog ( 'dlTest: ' + dlStatus + ', took ' + ( new Date ( ) . getTime ( ) - startT ) + 'ms' )
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done ( )
}
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}
} . bind ( this ) , 200 )
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}
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// upload test, calls done function whent it's over
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var ulCalled = false // used to prevent multiple accidental calls to ulTest
function ulTest ( done ) {
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tverb ( 'ulTest' )
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if ( ulCalled ) return ; else ulCalled = true // ulTest already called?
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// garbage data for upload test
var r = new ArrayBuffer ( 1048576 )
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var 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 ) { }
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var req = [ ]
var reqsmall = [ ]
for ( var i = 0 ; i < settings . xhr _ul _blob _megabytes ; i ++ ) req . push ( r )
req = new Blob ( req )
r = new ArrayBuffer ( 262144 )
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try { r = new Uint32Array ( r ) ; for ( var i = 0 ; i < r . length ; i ++ ) r [ i ] = Math . random ( ) * maxInt } catch ( e ) { }
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reqsmall . push ( r )
reqsmall = new Blob ( reqsmall )
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var testFunction = function ( ) {
var totLoaded = 0.0 , // total number of transmitted bytes
startT = new Date ( ) . getTime ( ) , // timestamp when test was started
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bonusT = 0 , //how many milliseconds the test has been shortened by (higher on faster connections)
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graceTimeDone = false , //set to true after the grace time is past
failed = false // set to true if a stream fails
xhr = [ ]
// function to create an upload stream. streams are slightly delayed so that they will not end at the same time
var testStream = function ( i , delay ) {
setTimeout ( function ( ) {
if ( testStatus !== 3 ) return // delayed stream ended up starting after the end of the upload test
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tverb ( 'ul test stream started ' + i + ' ' + delay )
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var prevLoaded = 0 // number of bytes transmitted last time onprogress was called
var x = new XMLHttpRequest ( )
xhr [ i ] = x
var ie11workaround
if ( settings . forceIE11Workaround ) ie11workaround = true ; else {
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 ( ) {
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tverb ( 'ul stream progress event (ie11wa)' )
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totLoaded += reqsmall . size ;
testStream ( i , 0 )
}
xhr [ i ] . onerror = function ( ) {
// error, abort
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tverb ( 'ul stream failed (ie11wa)' )
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if ( settings . xhr _ignoreErrors === 0 ) failed = true //abort
try { xhr [ i ] . abort ( ) } catch ( e ) { }
delete ( xhr [ i ] )
if ( settings . xhr _ignoreErrors === 1 ) testStream ( i , 0 ) ; //restart stream
}
xhr [ i ] . open ( 'POST' , settings . url _ul + url _sep ( 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 ) {
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tverb ( 'ul stream progress event ' + i + ' ' + event . loaded )
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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 the garbage data, start again
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tverb ( 'ul stream finished ' + i )
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testStream ( i , 0 )
} . bind ( this )
xhr [ i ] . upload . onerror = function ( ) {
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tverb ( 'ul stream failed ' + i )
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if ( settings . xhr _ignoreErrors === 0 ) failed = true //abort
try { xhr [ i ] . abort ( ) } catch ( e ) { }
delete ( xhr [ i ] )
if ( settings . xhr _ignoreErrors === 1 ) testStream ( i , 0 ) //restart stream
} . bind ( this )
// send xhr
xhr [ i ] . open ( 'POST' , settings . url _ul + url _sep ( 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 , settings . xhr _multistreamDelay * i )
}
// every 200ms, update ulStatus
interval = setInterval ( function ( ) {
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tverb ( 'UL: ' + ulStatus + ( graceTimeDone ? '' : ' (in grace time)' ) )
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var t = new Date ( ) . getTime ( ) - startT
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if ( graceTimeDone ) ulProgress = ( t + bonusT ) / ( settings . time _ul _max * 1000 )
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if ( t < 200 ) return
if ( ! graceTimeDone ) {
if ( t > 1000 * settings . time _ulGraceTime ) {
if ( totLoaded > 0 ) { // if the connection is so slow that we didn't get a single chunk yet, do not reset
startT = new Date ( ) . getTime ( )
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bonusT = 0
totLoaded = 0.0
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}
graceTimeDone = true ;
}
} else {
var speed = totLoaded / ( t / 1000.0 )
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if ( settings . time _auto ) {
//decide how much to shorten the test. Every 200ms, the test is shortened by the bonusT calculated here
var bonus = 6.4 * speed / 100000
bonusT += bonus > 800 ? 800 : bonus
}
//update status
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ulStatus = ( ( speed * 8 * settings . overheadCompensationFactor ) / ( settings . useMebibits ? 1048576 : 1000000 ) ) . toFixed ( 2 ) // speed is multiplied by 8 to go from bytes to bits, overhead compensation is applied, then everything is divided by 1048576 or 1000000 to go to megabits/mebibits
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if ( ( ( ( t + bonusT ) / 1000.0 ) > settings . time _ul _max ) || failed ) { // test is over, stop streams and timer
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if ( failed || isNaN ( ulStatus ) ) ulStatus = 'Fail'
clearRequests ( )
clearInterval ( interval )
ulProgress = 1
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tlog ( 'ulTest: ' + ulStatus + ', took ' + ( new Date ( ) . getTime ( ) - startT ) + 'ms' )
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done ( )
}
}
} . bind ( this ) , 200 )
} . bind ( this ) ;
if ( settings . xhr _ul _sendPostRequestBeforeStartingTest ) {
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tverb ( 'Sending POST request before performing upload test' ) ;
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xhr = [ ] ;
xhr [ 0 ] = new XMLHttpRequest ( ) ;
xhr [ 0 ] . onload = xhr [ 0 ] . onerror = function ( ) {
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tverb ( 'POST request sent, starting upload test' ) ;
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testFunction ( ) ;
} . bind ( this ) ;
xhr [ 0 ] . open ( 'POST' , settings . url _ul ) ;
xhr [ 0 ] . send ( ) ;
} else testFunction ( ) ;
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}
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// 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 ) {
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tverb ( 'pingTest' )
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if ( ptCalled ) return ; else ptCalled = true // pingTest already called?
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var startT = new Date ( ) . getTime ( ) ; //when the test was started
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var prevT = null // last time a pong was received
var ping = 0.0 // current ping value
var jitter = 0.0 // current jitter value
var i = 0 // counter of pongs received
var prevInstspd = 0 // last ping time, used for jitter calculation
xhr = [ ]
// ping function
var doPing = function ( ) {
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tverb ( 'ping' )
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pingProgress = i / settings . count _ping
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prevT = new Date ( ) . getTime ( )
xhr [ 0 ] = new XMLHttpRequest ( )
xhr [ 0 ] . onload = function ( ) {
// pong
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tverb ( 'pong' )
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if ( i === 0 ) {
prevT = new Date ( ) . getTime ( ) // first pong
} else {
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var instspd = new Date ( ) . getTime ( ) - prevT
if ( settings . ping _allowPerformanceApi ) {
try {
//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
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
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tverb ( 'Performance API not supported, using estimate' )
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}
}
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var instjitter = Math . abs ( instspd - prevInstspd )
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if ( i === 1 ) ping = instspd ; /* first ping, can't tell jitter yet*/ else {
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ping = instspd < ping ? instspd : ping * 0.8 + instspd * 0.2 // update ping, weighted average. if the instant ping is lower than the current average, it is set to that value instead of averaging
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if ( i === 2 ) jitter = instjitter //discard the first jitter measurement because it might be much higher than it should be
else
jitter = instjitter > jitter ? ( jitter * 0.3 + instjitter * 0.7 ) : ( jitter * 0.8 + instjitter * 0.2 ) // update jitter, weighted average. spikes in ping values are given more weight.
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}
prevInstspd = instspd
}
pingStatus = ping . toFixed ( 2 )
jitterStatus = jitter . toFixed ( 2 )
i ++
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tverb ( 'ping: ' + pingStatus + ' jitter: ' + jitterStatus )
if ( i < settings . count _ping ) doPing ( ) ; else { // more pings to do?
pingProgress = 1
tlog ( 'ping: ' + pingStatus + ' jitter: ' + jitterStatus + ', took ' + ( new Date ( ) . getTime ( ) - startT ) + 'ms' )
done ( )
}
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} . bind ( this )
xhr [ 0 ] . onerror = function ( ) {
// a ping failed, cancel test
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tverb ( 'ping failed' )
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if ( settings . xhr _ignoreErrors === 0 ) { //abort
pingStatus = 'Fail'
jitterStatus = 'Fail'
clearRequests ( )
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tlog ( 'ping test failed, took ' + ( new Date ( ) . getTime ( ) - startT ) + 'ms' )
pingProgress = 1
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done ( )
}
if ( settings . xhr _ignoreErrors === 1 ) doPing ( ) //retry ping
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if ( settings . xhr _ignoreErrors === 2 ) { //ignore failed ping
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i ++
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if ( i < settings . count _ping ) doPing ( ) ; else { // more pings to do?
pingProgress = 1
tlog ( 'ping: ' + pingStatus + ' jitter: ' + jitterStatus + ', took ' + ( new Date ( ) . getTime ( ) - startT ) + 'ms' )
done ( )
}
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}
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} . bind ( this )
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// send xhr
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xhr [ 0 ] . open ( 'GET' , settings . url _ping + url _sep ( settings . url _ping ) + 'r=' + Math . random ( ) , true ) // random string to prevent caching
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xhr [ 0 ] . send ( )
} . bind ( this )
doPing ( ) // start first ping
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}
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// telemetry
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function sendTelemetry ( done ) {
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if ( settings . telemetry _level < 1 ) return
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xhr = new XMLHttpRequest ( )
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xhr . onload = function ( ) {
try {
var parts = xhr . responseText . split ( ' ' )
if ( parts [ 0 ] == 'id' ) {
try {
var id = Number ( parts [ 1 ] )
if ( ! isNaN ( id ) ) done ( id ) ; else done ( - 1 ) ;
} catch ( e ) { done ( - 1 ) }
} else done ( - 1 ) ;
} catch ( e ) {
done ( - 1 )
}
}
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xhr . onerror = function ( ) { console . log ( 'TELEMETRY ERROR ' + xhr . status ) ; done ( - 1 ) }
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xhr . open ( 'POST' , settings . url _telemetry + url _sep ( settings . url _telemetry ) + "r=" + Math . random ( ) , true ) ;
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var telemetryIspInfo = {
processedString : clientIp ,
rawIspInfo : ( typeof ispInfo === "object" ) ? ispInfo : ""
}
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try {
var fd = new FormData ( )
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fd . append ( 'ispinfo' , JSON . stringify ( telemetryIspInfo ) ) ;
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fd . append ( 'dl' , dlStatus )
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fd . append ( 'ul' , ulStatus )
fd . append ( 'ping' , pingStatus )
fd . append ( 'jitter' , jitterStatus )
fd . append ( 'log' , settings . telemetry _level > 1 ? log : "" )
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fd . append ( 'extra' , settings . telemetry _extra ) ;
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xhr . send ( fd )
} catch ( ex ) {
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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 ( settings . telemetry _level > 1 ? log : '' )
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xhr . setRequestHeader ( 'Content-Type' , 'application/x-www-form-urlencoded' )
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xhr . send ( postData )
}
}