tencent cloud



Last updated: 2022-07-21 16:51:03

    This document describes how to assess the current network conditions.

    When you have a video call on WeChat under poor network conditions (for example, when you are in an elevator), WeChat displays a message indicating the current network quality is poor. This document describes how to use TRTC to implement a similar interaction in your own application.

    Call Guide

    TRTC provides the onNetworkQuality callback to report the current network quality once every two seconds. It contains two parameters: localQuality and remoteQuality.

    • localQuality indicates your current network quality, which has six levels: Excellent, Good, Poor, Bad, VeryBad, and Down.
    • remoteQuality is an array indicating the network quality of remote users. In this array, each element represents the network quality of a remote user.
    Quality Name Description
    0 Unknown Unknown
    1 Excellent The current network is excellent.
    2 Good The current network is good.
    3 Poor The current network is fine.
    4 Bad The current network is poor. There may be obvious stuttering and delay.
    5 VeryBad The current network is very poor. TRTC can sustain the connection but cannot guarantee the communication quality.
    6 Down The current network cannot meet the minimum requirements of TRTC, and it is impossible to have a normal audio/video call.

    You only need to listen for onNetworkQuality of TRTC and display the corresponding prompt on the UI.

    import TRTCCloud, { TRTCQuality } from 'trtc-electron-sdk';
    const rtcCloud = new TRTCCloud();
    function onNetworkQuality(localQuality, remoteQuality) {
    switch(localQuality.quality) {
      case TRTCQuality.TRTCQuality_Unknown:
        console.log('SDK has not yet sensed the current network quality.');
      case TRTCQuality.TRTCQuality_Excellent:
        console.log('The current network is very good.');
      case TRTCQuality.TRTCQuality_Good:
        console.log('The current network is good.');
      case TRTCQuality.TRTCQuality_Poor:
        console.log('The current network quality barely meets the demand.');
      case TRTCQuality.TRTCQuality_Bad:
        console.log('The current network is poor, and there may be significant freezes and call delays.');
      case TRTCQuality.TRTCQuality_Vbad:
        console.log('The current network is very poor, the communication quality cannot be guaranteed.');
      case TRTCQuality.TRTCQuality_Down:
        console.log('The current network does not meet the minimum requirements.');
    for (let i = 0; i < remoteQuality.length; i++) {
      console.log(`remote user: ${remoteQuality[i].userId}, quality: ${remoteQuality[i].quality}`);
    rtcCloud.on('onNetworkQuality', onNetworkQuality);
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