Detect Network Quality

const trtc = TRTC.create();
trtc.on(TRTC.EVENT.NETWORK_QUALITY, event => {
   console.log(`network-quality, uplinkNetworkQuality:${event.uplinkNetworkQuality}, downlinkNetworkQuality: ${event.downlinkNetworkQuality}`)
   console.log(`uplink rtt:${event.uplinkRTT} loss:${event.uplinkLoss}`)
   console.log(`downlink rtt:${event.downlinkRTT} loss:${event.downlinkLoss}`)
})

let uplinkTRTC = null; // Used to detect uplink network quality
let downlinkTRTC = null; // Used to detect downlink network quality
let localStream = null; // Stream used for testing
let testResult = {
  // Record uplink network quality data
  uplinkNetworkQualities: [],
  // Record downlink network quality data
  downlinkNetworkQualities: [],
  average: {
    uplinkNetworkQuality: 0,
    downlinkNetworkQuality: 0
  }
}

// 1. Test uplink network quality
async function testUplinkNetworkQuality() {
  uplinkTRTC = TRTC.create();

  uplinkTRTC.enterRoom({
    roomId: 8080,
    sdkAppId: 0, // Fill in sdkAppId
    userId: 'user_uplink_test',
    userSig: '', // userSig of uplink_test
    scene: 'rtc'
  })

  uplinkTRTC.on(TRTC.EVENT.NETWORK_QUALITY, event => {
    const { uplinkNetworkQuality } = event;
    testResult.uplinkNetworkQualities.push(uplinkNetworkQuality);
  });

}

// 2. Detect downlink network quality
async function testDownlinkNetworkQuality() {
  downlinkTRTC = TRTC.create();
  downlinkTRTC.enterRoom({
    roomId: 8080,
    sdkAppId: 0, // Fill in sdkAppId
    userId: 'user_downlink_test',
    userSig: '', // userSig
    scene: 'rtc'
  });

  downlinkTRTC.on(TRTC.EVENT.NETWORK_QUALITY, event => {
      const { downlinkNetworkQuality } = event;
      testResult.downlinkNetworkQualities.push(downlinkNetworkQuality);
  })
}

// 3. Start detection
testUplinkNetworkQuality();
testDownlinkNetworkQuality();

// 4. Stop detection after 15s and calculate the average network quality
setTimeout(() => {
  // Calculate the average uplink network quality
  if (testResult.uplinkNetworkQualities.length > 0) {
    testResult.average.uplinkNetworkQuality = Math.ceil(
      testResult.uplinkNetworkQualities.reduce((value, current) => value + current, 0) / testResult.uplinkNetworkQualities.length
    );
  }

  if (testResult.downlinkNetworkQualities.length > 0) {
    // Calculate the average downlink network quality
    testResult.average.downlinkNetworkQuality = Math.ceil(
      testResult.downlinkNetworkQualities.reduce((value, current) => value + current, 0) / testResult.downlinkNetworkQualities.length
    );
  }
    
  // Detection is over, clean up related states.
  uplinkTRTC.exitRoom();
  downlinkTRTC.exitRoom();
}, 15 * 1000);