Licensing Reference Android Developers. LVL Classes and Interfaces. Table 1 lists all of the source files in the License Verification. Library LVL available through the Android SDK. All of the files are part of. Assuming your SELECTserver is running version 08. Bentley SELECTserver Gateway service on your license server is. Installing the DS License Server ThissectionexplainshowtoinstalltheDSLicenseServer. Before Starting the Installation. Table 1. Summary of LVL library. Category. Name. Description. License check and result. License. Checker. Class that you instantiate or subclass to initiate a license check. License. Checker. Hi SupportForum, Please help me in updating my rekordbox to rekordbox dj. I have the activation key and also my laptop is connected to. If you get an error message that indicates no response from the license server when running SDCHKLICENSE. Created Date. Callback. Interface that you implement to handle result of the license check. Policy. Policy. Interface that you implement to determine whether to allow. Server. Managed. Policy. Default Policy implementation. Uses settings provided by the. Strict. Policy. Alternative Policy implementation. Enforces licensing based on a direct. No caching or request retry. Data obfuscation optionalObfuscator. Interface that you implement if you are using a Policy such as. Server. Managed. Policy that caches license response data in a persistent store. Windows 10 Dns ServerApplies an obfuscation algorithm to encode and decode data being written or. AESObfuscator. Default Obfuscator implementation that uses AES encryptiondecryption. Device limitationoptionalDevice. Limiter. Interface that you implement if you want to restrict use of an. GuN4flVog8/TvtLbfIgC4I/AAAAAAAAAM8/VKHvCvgUb4c/s1600/Server+Name+at+Port+Value.PNG' alt='Dns Network' title='Dns Network' />Dns No Response From ServerCalled from License. Validator. Implementing. Device. Limiter is not recommended for most applications because it requires a. Null. Device. Limiter. Default Device. Limiter implementation that is a no op allows access to all. Library core, no integration needed. Response. Data. Class that holds the fields of a license response. License. Validator. Class that decrypts and verifies a response received from the licensing. Validation. Exception. Class that indicates errors that occur when validating the integrity of data. Obfuscator. Preference. Obfuscator. Utility class that writesreads obfuscated data to the systems. Shared. Preferences store. ILicensing. Service. One way IPC interface over which a license check request is passed to the. Google Play client. ILicense. Result. Listener. One way IPC callback implementation over which the application receives an. Server Response Codes. Table 2 lists all of the license response codes supported by the. In general, an application should handle all of these response. By default, the License. Validator class in the LVL provides all of the. Table 2. Summary of response codes. Google Play server in a license response. Response Code. Description. Signed Extras. Comments. LICENSEDThe application is licensed to the user. The user has purchased the. Yes. VT, GT, GRAllow access according to Policy constraints. LICENSEDOLDKEYThe application is licensed to the user, but there is an updated application. Yes VT, GT, GR, UTOptionally allow access according to Policy constraints. Can indicate that the key pair used by the installed. The application can allow access. NOTLICENSEDThe application is not licensed to the user. No. Do not allow access. ERRORCONTACTINGSERVERLocal error the Google Play application was not able to reach the. No. Retry the license check according to Policy retry limits. ERRORSERVERFAILUREServer error the server could not load the applications key. No. Retry the license check according to Policy retry limits. ERRORINVALIDPACKAGENAMELocal error the application requested a license check for a package. No Do not retry the license check. Typically caused by a development error. ERRORNONMATCHINGUIDLocal error the application requested a license check for a package. UID package, user ID pair does not match that of the requesting. No Do not retry the license check. Typically caused by a development error. ERRORNOTMARKETMANAGEDServer error the application package name was not recognized by. Google Play. No. Do not retry the license check. Can indicate that the application was not published. Google Play or that there is an development error in the licensing. Note As documented in. What Is The Filthy Few Patch For on this page. Setting Up The Testing Environment, the response code can be manually. Google Play Console. Note Previously you could test an app by. This functionality is no longer. For more information, see Draft Apps. No Longer Supported. To assist your application in managing access to the application across the application refund. The licensing server includes several pieces of. Specifically, the service provides recommended values for the. If your application uses APK. URLs. The server appends. Any Policy implementation can extract the extras settings from the license. The LVL default Policy implementation, Server. Managed. Policy, serves as a working. Table 3. Summary of. Google Play server in a license. Extra. Description. VTLicense validity timestamp. Specifies the datetime at which the current. See the section. below about License validity period. GTGrace period timestamp. Specifies the end of the period during which a. Policy may allow access to the application, even though the response status is. RETRY. The value is managed by the server, however a typical value would be 5. See the section. below about Retry period and maximum retry count. GRMaximum retries count. Specifies how many consecutive RETRY license checks. Policy should allow, before denying the user access to the application. The value is managed by the server, however a typical value would be 1. See the section. below about Retry period and maximum retry count. UTUpdate timestamp. Specifies the daytime when the most recent update to. The server returns this extra. LICENSEDOLDKEYS responses, to allow the Policy to determine how much. FILEURL1 or FILEURL2. The URL for an expansion file 1 is for the main file, 2 is the patch file. Use this to. download the file over HTTP. FILENAME1 or FILENAME2. The expansion files name 1 is for the main file, 2 is the patch file. You must use this. FILESIZE1 or FILESIZE2. The size of the file in bytes 1 is for the main file, 2 is the patch file. Use this to. assist with downloading and to ensure that enough space is available on the devices shared. License validity period. The Google Play licensing server sets a license validity period for all. The period expresses the interval of time over which an. Policy in the application. The licensing server includes the. VT. A. Policy can extract the VT key value and use it to conditionally allow access to. The license validity signals to a licensing Policy when it must recheck the. It is not intended to imply. That is, when an. Policy must recheck the licensing status with the server. It follows that. as long as the license validity period has not expired, it is acceptable for the. Policy to cache the initial license status locally and return the cached license. The licensing server manages the validity period as a means of helping the. Google Play for paid applications. It sets the validity period based on. Specifically. the server sets a validity period as follows For a paid application, the server sets the initial license validity period. A licensing Policy in the application may cache the. When an application is no longer refundable, the server. For a free application, the server sets the validity period to a very high. MAXVALUE. This ensures that, provided the Policy has. The Server. Managed. Policy implementation uses the extracted timestamp. Validity. Timestamp as a primary condition for determining whether. Retry period and maximum retry count. In some cases, system or network conditions can prevent an applications. Google Play client application. For example, the. When network problems prevent or interrupt a license check, the Google.