Stun Server가 기능하고 있는지 확인하는 방법

저는 우리 코드 월드의 모든 기사를 업데이트하려고 합니다만, 블로그나 그 외의 일을 하고 있기 때문에, 24시간 365일 갱신할 수 없을지도 모릅니다.지금까지의 리스트는 정상적으로 동작하고 있었습니다만, 발행 후 몇 달 또는 몇 년 후에 이 리스트를 읽고, 최종 갱신일이 너무 오래된 경우는, 서버가 스스로 정상적으로 동작하고 있는지를 테스트하고, 어느 것을 사용할지를 결정할 수 있습니다.이 목록은 목록 내의 항목과 같은 STUN 주소가 도달 가능한지 여부를 확인하기 위해 작성한 다음 스크립트를 사용하여 검증되었습니다.

주의: 만약myIpAddress는 빈 문자열입니다.주소는 도달할 수 있었지만, STUN 서버 기능은 실패했을 가능성이 있습니다.

/**
 * Helper method to check if a STUN address is reachable.
 * 
 * @param address The Domain and port of the STUN server.
 * @param _timeout The connection timeout (Limit when the connection takes too long). By default is 6 seconds.
 * @returns 
 */
 function isStunAddressUp(address, _timeout){
    _timeout = _timeout || 6000;
    let response = {
        myIpAddress: "",
        stun: address,
        ipv6Supported: true,
        errors: []
    };

    let checker = new Promise((resolve, reject) => {
        const pc = new RTCPeerConnection({
            iceServers: [
                {urls: `stun:${address}?transport=udp`}
            ]
        });
        
        pc.onicecandidate = (e) => {
            if (!e.candidate) return;

            // If a srflx candidate was found, notify that the STUN server works and provide the IP
            if(e.candidate.type == "srflx"){
                response.myIpAddress = e.candidate.address;
                pc.close();
            }
        };
        
        // Log errors:
        // Remember that in most of the cases, even if its working, you will find a STUN host lookup received error
        // Chrome tried to look up the IPv6 DNS record for server and got an error in that process. However, it may still be accessible through the IPv4 address
        pc.onicecandidateerror = (e) => {
            if(e.address == "[0:0:0:x:x:x:x:x]"){
                response.ipv6Supported = false;
            }
            
            response.errors.push(e);
        };
        
        pc.onclose = function () {
            console.log("datachannel close");
        };
        
        var dc = pc.createDataChannel('ourcodeworld-rocks');
        pc.createOffer().then(offer => pc.setLocalDescription(offer));

        dc.onclose = function (e) {
            resolve(response);
        };
    });

    let timeout = new Promise(function(resolve, reject){
        setTimeout(function() {
            reject(response);
        }, _timeout);
    });

    return Promise.race([checker, timeout]);
}

스니펫 복사

이 방법은 매우 간단하고 훌륭합니다.첫 번째 인수로 포트와 함께 STUN 서버의 도메인 또는 IP 주소를 지정하고 두 번째 인수로 요청이 성공할 때까지의 제한 시간(타임아웃)을 지정하기만 하면 됩니다.보통 성공적인 요청에는 단 1초도 걸리지 않습니다. 따라서 요청 성공 시간을 늘려야 하는 경우 서버 또는 연결에 문제가 있습니다.

isStunAddressUp("stun.ipfire.org:3478", 5000).then(function(result){
    console.log(result);
    // `result` Should contain an object like this:
    //{
    //    "myIpAddress": "[::ffff:xxx.xxx.xx.xx]",
    //    "stun": "stun.ipfire.org:3478",
    //    "ipv6Supported": true,
    //    "errors": []
    //}
}).catch(function(err){
    // Something went wrong
    console.log(err);
});

스니펫 복사

보시는 바와 같이 이 메서드는 STUN 서버에서 해결된 IP 주소를 반환하고 IPV6를 지원하는지 여부를 확인합니다.

IPV6 지원 확인 목록

어느 STUN 주소가 IPV6 를 서포트하고 있는지를 알기 위해서, 필요한 정보를 포함한 JSON 오브젝트를 인쇄하는 다음의 스크립트를 작성했습니다.

let serversToTest = [
    // ...
    "numb.viagenie.ca:3478",
    // ...
];

async function TestServers(servers){
    let results = {
        servers: [],
        details: []
    };

    for(let i = 0; i < servers.length;i++){
        let server = servers[i];

        console.log(`== Testing: ${server}:`);

        try{
            let result = await isStunAddressUp(server, 5000);
            console.log('%c Server functional! ', 'background: #222; color: #02ff00');

            if(result.myIpAddress){
                results.servers.push(server);
                results.details.push({
                    STUNAddress: server,
                    ipv6Supported: result.ipv6Supported,
                    lastTest: new Date().toDateString()
                });
            }
        }catch(e){
            if(e == "timeout"){
                console.log('%c STUN Server connection timeout! ', 'background: #222; color: #ff0000');
                return;
            }

            console.log('%c STUN Server unreachable! ', 'background: #222; color: #ff0000');
        }

        console.log(`======================`);
    }

    console.log(JSON.stringify(results, null, 4));
}

TestServers(serversToTest);

스니펫 복사

그 결과, 기능하는 서버의 리스트가 다음과 같이 출력되었습니다.

[
        {
            "STUNAddress": "iphone-stun.strato-iphone.de:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "numb.viagenie.ca:3478",
            "ipv6Supported": true,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.12connect.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.12voip.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.1und1.de:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.3cx.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.acrobits.cz:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.actionvoip.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.advfn.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.altar.com.pl:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.antisip.com:3478",
            "ipv6Supported": true,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.avigora.fr:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.bluesip.net:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.cablenet-as.net:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.callromania.ro:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.callwithus.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.cheapvoip.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.cloopen.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.commpeak.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.cope.es:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.counterpath.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.counterpath.net:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.dcalling.de:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.demos.ru:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.dus.net:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.easycall.pl:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.easyvoip.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.ekiga.net:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.epygi.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.etoilediese.fr:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.faktortel.com.au:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.freecall.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.freeswitch.org:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.freevoipdeal.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.gmx.de:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.gmx.net:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.halonet.pl:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.hoiio.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.hosteurope.de:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.infra.net:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.internetcalls.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.intervoip.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.ipfire.org:3478",
            "ipv6Supported": true,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.ippi.fr:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.ipshka.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.it1.hr:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.ivao.aero:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.jumblo.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.justvoip.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.l.google.com:19302",
            "ipv6Supported": true,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.linphone.org:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.liveo.fr:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.lowratevoip.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.lundimatin.fr:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.mit.de:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.miwifi.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.modulus.gr:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.myvoiptraffic.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.netappel.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.netgsm.com.tr:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.nfon.net:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.nonoh.net:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.nottingham.ac.uk:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.ooma.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.ozekiphone.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.pjsip.org:3478",
            "ipv6Supported": true,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.poivy.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.powervoip.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.ppdi.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.qq.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.rackco.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.rockenstein.de:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.rolmail.net:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.rynga.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.schlund.de:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.sigmavoip.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.sip.us:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.sipdiscount.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.sipgate.net:10000",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.sipgate.net:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.siplogin.de:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.sipnet.net:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.sipnet.ru:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.sippeer.dk:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.siptraffic.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.sma.de:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.smartvoip.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.smsdiscount.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.solcon.nl:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.solnet.ch:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.sonetel.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.sonetel.net:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.sovtest.ru:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.srce.hr:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.stunprotocol.org:3478",
            "ipv6Supported": true,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.t-online.de:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.tel.lu:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.telbo.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.tng.de:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.twt.it:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.uls.co.za:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.unseen.is:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.usfamily.net:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.viva.gr:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.vivox.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.vo.lu:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.voicetrading.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.voip.aebc.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.voip.blackberry.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.voip.eutelia.it:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.voipblast.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.voipbuster.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.voipbusterpro.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.voipcheap.co.uk:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.voipcheap.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.voipgain.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.voipgate.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.voipinfocenter.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.voipplanet.nl:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.voippro.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.voipraider.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.voipstunt.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.voipwise.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.voipzoom.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.voys.nl:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.voztele.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.webcalldirect.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.wifirst.net:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.xtratelecom.es:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun.zadarma.com:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun1.faktortel.com.au:3478",
            "ipv6Supported": false,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun1.l.google.com:19302",
            "ipv6Supported": true,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun2.l.google.com:19302",
            "ipv6Supported": true,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun3.l.google.com:19302",
            "ipv6Supported": true,
            "lastTest": "Thu Jul 01 2021"
        },
        {
            "STUNAddress": "stun4.l.google.com:19302",
            "ipv6Supported": true,
            "lastTest": "Thu Jul 01 2021"
        }
]

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