add support for video bids to use an impression tracking URL #2365
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Type of change
Description of change
This PR adds support for adapters to populate the impression element of the VAST wrapper XML that gets generated by the
videoCache
module for an instream video bid response.When interpreting the bid response, an adapter could set the corresponding imp URL to the new
bid.vastImpUrl
field. This field would be read by thevideoCache
module when it's storing the bid in prebid cache, and if present the URL gets automatically added into the VAST wrapper. By adding it to the wrapper, the URL would only be executed when the video player was parsing the XML to load the video ad.The
appnexusBidAdapter
was updated to use this new functionality, by reading/using the URL stored in thenotify_url
field of the AN video response.Docs PR prebid/prebid.github.io#699