Since build 2.6.110 it is possible to receive messages containing current publishing or playback bitrate from server and to control channel quality based on client and server bitrates difference.
To enable channel quality control, use the method WCSStream.enableConnectionQualityCalculation()
publishStream?.enableConnectionQualityCalculation(true);
Then register a callback function to get quality metric and current client and server bitrate values averaged by Kalman filter
publishStream?.onConnectionQualityCallback({currentQuality, clientFiltered, serverFiltered in
self.updateQualityStatus(currentQuality, view: self.publishQuality);
});
Usage example:
code of handler registration, code of handler
@IBOutlet weak var publishQuality: UILabel!
...
publishStream?.enableConnectionQualityCalculation(true);
publishStream?.onConnectionQualityCallback({currentQuality, clientFiltered, serverFiltered in
self.updateQualityStatus(currentQuality, view: self.publishQuality);
});
...
fileprivate func updateQualityStatus(_ quality:kFPWCSConnectionQuality, view: UILabel) {
switch (quality) {
case .fpwcsConnectionQualityBad:
view.text = "BAD";
view.textColor = .red;
break;
case .fpwcsConnectionQualityGood:
view.text = "GOOD";
view.textColor = .yellow;
break;
case .fpwcsConnectionQualityPerfect:
view.text = "PEFRECT";
view.textColor = .green;
break;
case .fpwcsConnectionQualityUnknown:
view.text = "UNKNOWN";
view.textColor = .darkText;
}
}