StreamPackage SSAI service uses server-side reporting. When the player requests the ad URL in the manifest, the SSAI service will directly report the ad usage to the ad tracking URL.
Ad URL format in HLS:
GET <StreamPackageURL>/v1/ssai/segment/<uniq_id>/<session_id>/<asset_id>/<seq_num>
When the player requests playback through the ad segment URL (/v1/ssai/segment path), StreamPackage will send the tracking data to the ad server through the ad tracking URL, and at the same time, redirect to obtain the actual *.ts ad segment and distribute it to the player.