Network Quality Reports

Video/Audio conferencing is by nature a data intensive operation. The 100ms SDK attempts to stabilize connections especially if subscribe degradation is turned on in the template but it's possible for really bad connections that users will still have problems.

It can be helpful to measure a user's connection speed before joining a room in order to set expectations or decide to have them join with video off etc.

The 100ms SDK provides a way to measure the user's downlink speed in the preview screen.

The download will be continued for at most a fixed number of seconds (eg: 10 seconds) and the speed during that interval is calculated. The entire file may not be downloaded if it exceeds the timeout.

DNS time is not counted in this, only throughput is measured.

Requesting/Reading a Network Quality Update in Preview

When creating an HMSConfig object to request a preview, set the captureNetworkQualityInPreview to true to measure the user's downlink network quality.

When available, the information will be returned in onPeerUpdate of the HMSPreviewListener and HMSUpdateListener in the update type HMSPeerUpdate.networkQualityUpdated. It can be retrieved out of the HMSPeer object's networkQuality property.

 

void requestPreviewWithNetworkQuality(String authToken,String metadata,HMSPreviewListener previewListener) {

    bool requestNetworkQuality = true;
    hmsSDK = HMSSDK();
    HMSConfig config = new HMSConfig(
            "Name",
            authToken,
            metadata,
            requestNetworkQuality
    );

    hmsSDK.preview(config);
    hmsSDK.addPreviewListener(previewListener);
}

Here's the class definition of HMSNetworkQuality, which is a property on the HMSPeer.

 
class HMSNetworkQuality(
    int quality;
)

In Preview

you can find the updates through onPeerUpdate callback in HMSPreviewListener

 

@override
void onPeerUpdate({required HMSPeer peer, required HMSPeerUpdate update}) {
    if (update == HMSPeerUpdate.networkQualityUpdated) {
      print("Network Quality in Preview ${peer.networkQuality?.quality}");
    }
  }

In Room

you can find the updates through onPeerUpdate callback in HMSUpdateListener

 

@override
void onPeerUpdate({required HMSPeer peer, required HMSPeerUpdate update}) {
    if (update == HMSPeerUpdate.networkQualityUpdated) {
      print("Network Quality in Room  ${peer.networkQuality?.quality}");
    }
  }

Interpreting the Values

peer.networkQuality?.quality will be a value between -1 and 5.

• -1 -> Test timeout.
• 0 -> Very bad network or network check failure.
• 1 -> Poor network.
• 2 -> Bad network.
• 3 -> Average.
• 4 -> Good.
• 5 -> Best.