(Possible Actions Required) Changes to the Devices Detection Library

On the 6th of November 2024 at 20:00 UTC, Fastly began to make changes to our device detection library. Our Engineers had identified that these changes would impact a portion of the client variables used in some customer’s custom VCL code. Additionally, as part of this process we have also begun to deprecate a small portion of less frequently used variables. Customers identified to have services impacted by this change, would have received an email notification with additional details.Refer to subject line, [Action Required] Changes to Device Detection Library  Deprecated variables and changes to make:Identify where you use the following client.* variables  in your service's custom VCL.client.class.checkerclient.class.filterclient.class.masqueradingclient.class.spamclient.platform.manufacturerclient.display.heightclient.display.widthclient.display.ppiclient.class.downloaderclient.class.feedreaderclient.platform.ereaderclient.platform.tvplayer If you are using any of the above deprecated variables, please remove them, or use Client Hints to fetch that information by no later than the 8th of January 2025.The continued use of these variables after their deprecation date will result in the return of empty values when accessing the device detection library.If you require Fastly to coordinate with you while performing the upgrade, please contact Fastly Support at https://support.fastly.com to schedule a time to switch to the new library.Remaining client.* will continue to work with the caveat that some of the string variables will show values differently than before. Our Client request documentation will be updated with the latest variables once this change is completed.