问如何使转服务器更快

EN

    let iceConfiguration = {
    "iceServers":
        [
            // { url :'stun4.l.google.com:19302'},
            // { url: 'stunserver.org:3478'},
            { url: 'stun:stun.l.google.com:19302' },
            { url: 'stun:stun1.l.google.com:19302' },
            { url: 'stun:stun2.l.google.com:19302' },
            { url: 'stun:stun3.l.google.com:19302' },
            {
                url: 'turn:numb.viagenie.ca',
                credential: 'muazkh',
                username: 'webrtc@live.com'
            },
            {
                url: 'turn:relay.backups.cz',
                credential: 'webrtc',
                username: 'webrtc'
            },
            {
                url: 'turn:relay.backups.cz?transport=tcp',
                credential: 'webrtc',
                username: 'webrtc'
            },
            {
                url: 'turn:192.158.29.39:3478?transport=udp',
                credential: 'JZEOEt2V3Qb0y27GRntt2u2PAYA=',
                username: '28224511:1379330808'
            },
            {
                url: 'turn:192.158.29.39:3478?transport=tcp',
                credential: 'JZEOEt2V3Qb0y27GRntt2u2PAYA=',
                username: '28224511:1379330808'
            },
            {
                url: 'turn:turn.bistri.com:80',
                credential: 'homeo',
                username: 'homeo'
             },
             {
                url: 'turn:turn.anyfirewall.com:443?transport=tcp',
                credential: 'webrtc',
                username: 'webrtc'
            }
        ]
    };