dotnet · fowl2 · May 6, 2021
diff --git a/src/Cli/Microsoft.DotNet.Configurer/LocalizableStrings.resx b/src/Cli/Microsoft.DotNet.Configurer/LocalizableStrings.resx
@@ -128,7 +128,7 @@ SDK Version: {1}</value>
   <data name="TelemetryMessage" xml:space="preserve">
     <value>Telemetry
 ---------
-The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting the DOTNET_CLI_TELEMETRY_OPTOUT environment variable to '1' or 'true' using your favorite shell.
+The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting either the DOTNET_CLI_TELEMETRY_OPTOUT or DO_NOT_TRACK environment variable to '1' or 'true' using your favorite shell.
 
 Read more about .NET CLI Tools telemetry: https://aka.ms/dotnet-cli-telemetry</value>
   </data>

diff --git a/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.cs.xlf b/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.cs.xlf
@@ -44,7 +44,7 @@ Verze sady SDK: {1}</target>
       <trans-unit id="TelemetryMessage">
         <source>Telemetry
 ---------
-The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting the DOTNET_CLI_TELEMETRY_OPTOUT environment variable to '1' or 'true' using your favorite shell.
+The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting either the DOTNET_CLI_TELEMETRY_OPTOUT or DO_NOT_TRACK environment variable to '1' or 'true' using your favorite shell.
 
 Read more about .NET CLI Tools telemetry: https://aka.ms/dotnet-cli-telemetry</source>
         <target state="translated">Telemetrie

diff --git a/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.de.xlf b/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.de.xlf
@@ -44,7 +44,7 @@ SDK-Version: {1}</target>
       <trans-unit id="TelemetryMessage">
         <source>Telemetry
 ---------
-The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting the DOTNET_CLI_TELEMETRY_OPTOUT environment variable to '1' or 'true' using your favorite shell.
+The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting either the DOTNET_CLI_TELEMETRY_OPTOUT or DO_NOT_TRACK environment variable to '1' or 'true' using your favorite shell.
 
 Read more about .NET CLI Tools telemetry: https://aka.ms/dotnet-cli-telemetry</source>
         <target state="translated">Telemetrie
@@ -56,4 +56,4 @@ Weitere Informationen zu Telemetriedaten in .NET-CLI-Tools finden Sie hier: http
       </trans-unit>
     </body>
   </file>
-</xliff>
+</xliff>
diff --git a/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.es.xlf b/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.es.xlf
@@ -44,7 +44,7 @@ Versión del SDK: {1}</target>
       <trans-unit id="TelemetryMessage">
         <source>Telemetry
 ---------
-The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting the DOTNET_CLI_TELEMETRY_OPTOUT environment variable to '1' or 'true' using your favorite shell.
+The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting either the DOTNET_CLI_TELEMETRY_OPTOUT or DO_NOT_TRACK environment variable to '1' or 'true' using your favorite shell.
 
 Read more about .NET CLI Tools telemetry: https://aka.ms/dotnet-cli-telemetry</source>
         <target state="translated">Telemetría
@@ -56,4 +56,4 @@ Lea más sobre la telemetría de las herramientas de la CLI de .NET: https://aka
       </trans-unit>
     </body>
   </file>
-</xliff>
+</xliff>
diff --git a/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.fr.xlf b/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.fr.xlf
@@ -44,7 +44,7 @@ Version du kit SDK : {1}</target>
       <trans-unit id="TelemetryMessage">
         <source>Telemetry
 ---------
-The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting the DOTNET_CLI_TELEMETRY_OPTOUT environment variable to '1' or 'true' using your favorite shell.
+The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting either the DOTNET_CLI_TELEMETRY_OPTOUT or DO_NOT_TRACK environment variable to '1' or 'true' using your favorite shell.
 
 Read more about .NET CLI Tools telemetry: https://aka.ms/dotnet-cli-telemetry</source>
         <target state="translated">Télémétrie

diff --git a/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.it.xlf b/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.it.xlf
@@ -44,7 +44,7 @@ Versione SDK: {1}</target>
       <trans-unit id="TelemetryMessage">
         <source>Telemetry
 ---------
-The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting the DOTNET_CLI_TELEMETRY_OPTOUT environment variable to '1' or 'true' using your favorite shell.
+The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting either the DOTNET_CLI_TELEMETRY_OPTOUT or DO_NOT_TRACK environment variable to '1' or 'true' using your favorite shell.
 
 Read more about .NET CLI Tools telemetry: https://aka.ms/dotnet-cli-telemetry</source>
         <target state="translated">Telemetria

diff --git a/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.ja.xlf b/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.ja.xlf
@@ -44,7 +44,7 @@ SDK バージョン: {1}</target>
       <trans-unit id="TelemetryMessage">
         <source>Telemetry
 ---------
-The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting the DOTNET_CLI_TELEMETRY_OPTOUT environment variable to '1' or 'true' using your favorite shell.
+The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting either the DOTNET_CLI_TELEMETRY_OPTOUT or DO_NOT_TRACK environment variable to '1' or 'true' using your favorite shell.
 
 Read more about .NET CLI Tools telemetry: https://aka.ms/dotnet-cli-telemetry</source>
         <target state="translated">テレメトリ

diff --git a/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.ko.xlf b/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.ko.xlf
@@ -44,7 +44,7 @@ SDK 버전: {1}</target>
       <trans-unit id="TelemetryMessage">
         <source>Telemetry
 ---------
-The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting the DOTNET_CLI_TELEMETRY_OPTOUT environment variable to '1' or 'true' using your favorite shell.
+The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting either the DOTNET_CLI_TELEMETRY_OPTOUT or DO_NOT_TRACK environment variable to '1' or 'true' using your favorite shell.
 
 Read more about .NET CLI Tools telemetry: https://aka.ms/dotnet-cli-telemetry</source>
         <target state="translated">원격 분석

diff --git a/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.pl.xlf b/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.pl.xlf
@@ -44,7 +44,7 @@ Wersja zestawu SDK: {1}</target>
       <trans-unit id="TelemetryMessage">
         <source>Telemetry
 ---------
-The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting the DOTNET_CLI_TELEMETRY_OPTOUT environment variable to '1' or 'true' using your favorite shell.
+The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting either the DOTNET_CLI_TELEMETRY_OPTOUT or DO_NOT_TRACK environment variable to '1' or 'true' using your favorite shell.
 
 Read more about .NET CLI Tools telemetry: https://aka.ms/dotnet-cli-telemetry</source>
         <target state="translated">Telemetria

diff --git a/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.pt-BR.xlf b/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.pt-BR.xlf
@@ -44,7 +44,7 @@ Versão do SDK: {1}</target>
       <trans-unit id="TelemetryMessage">
         <source>Telemetry
 ---------
-The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting the DOTNET_CLI_TELEMETRY_OPTOUT environment variable to '1' or 'true' using your favorite shell.
+The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting either the DOTNET_CLI_TELEMETRY_OPTOUT or DO_NOT_TRACK environment variable to '1' or 'true' using your favorite shell.
 
 Read more about .NET CLI Tools telemetry: https://aka.ms/dotnet-cli-telemetry</source>
         <target state="translated">Telemetria

diff --git a/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.ru.xlf b/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.ru.xlf
@@ -44,7 +44,7 @@ SDK Version: {1}</source>
       <trans-unit id="TelemetryMessage">
         <source>Telemetry
 ---------
-The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting the DOTNET_CLI_TELEMETRY_OPTOUT environment variable to '1' or 'true' using your favorite shell.
+The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting either the DOTNET_CLI_TELEMETRY_OPTOUT or DO_NOT_TRACK environment variable to '1' or 'true' using your favorite shell.
 
 Read more about .NET CLI Tools telemetry: https://aka.ms/dotnet-cli-telemetry</source>
         <target state="translated">Телеметрия

diff --git a/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.tr.xlf b/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.tr.xlf
@@ -44,7 +44,7 @@ SDK Sürümü: {1}</target>
       <trans-unit id="TelemetryMessage">
         <source>Telemetry
 ---------
-The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting the DOTNET_CLI_TELEMETRY_OPTOUT environment variable to '1' or 'true' using your favorite shell.
+The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting either the DOTNET_CLI_TELEMETRY_OPTOUT or DO_NOT_TRACK environment variable to '1' or 'true' using your favorite shell.
 
 Read more about .NET CLI Tools telemetry: https://aka.ms/dotnet-cli-telemetry</source>
         <target state="translated">Telemetri

diff --git a/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.zh-Hans.xlf b/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.zh-Hans.xlf
@@ -44,7 +44,7 @@ SDK 版本: {1}</target>
       <trans-unit id="TelemetryMessage">
         <source>Telemetry
 ---------
-The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting the DOTNET_CLI_TELEMETRY_OPTOUT environment variable to '1' or 'true' using your favorite shell.
+The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting either the DOTNET_CLI_TELEMETRY_OPTOUT or DO_NOT_TRACK environment variable to '1' or 'true' using your favorite shell.
 
 Read more about .NET CLI Tools telemetry: https://aka.ms/dotnet-cli-telemetry</source>
         <target state="translated">遥测

diff --git a/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.zh-Hant.xlf b/src/Cli/Microsoft.DotNet.Configurer/xlf/LocalizableStrings.zh-Hant.xlf
@@ -44,7 +44,7 @@ SDK 版本: {1}</target>
       <trans-unit id="TelemetryMessage">
         <source>Telemetry
 ---------
-The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting the DOTNET_CLI_TELEMETRY_OPTOUT environment variable to '1' or 'true' using your favorite shell.
+The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting either the DOTNET_CLI_TELEMETRY_OPTOUT or DO_NOT_TRACK environment variable to '1' or 'true' using your favorite shell.
 
 Read more about .NET CLI Tools telemetry: https://aka.ms/dotnet-cli-telemetry</source>
         <target state="translated">遙測

diff --git a/src/Cli/dotnet/Program.cs b/src/Cli/dotnet/Program.cs
@@ -158,7 +158,8 @@ internal static int ProcessArgs(string[] args, TimeSpan startupTime, ITelemetry
                     bool generateAspNetCertificate =
                         environmentProvider.GetEnvironmentVariableAsBool("DOTNET_GENERATE_ASPNET_CERTIFICATE", defaultValue: true);
                     bool telemetryOptout =
-                      environmentProvider.GetEnvironmentVariableAsBool("DOTNET_CLI_TELEMETRY_OPTOUT", defaultValue: false);
+                      environmentProvider.GetEnvironmentVariableAsBool("DOTNET_CLI_TELEMETRY_OPTOUT", defaultValue: false)
+                      || environmentProvider.GetEnvironmentVariableAsBool("DO_NOT_TRACK", defaultValue: false);
                     bool addGlobalToolsToPath =
                         environmentProvider.GetEnvironmentVariableAsBool("DOTNET_ADD_GLOBAL_TOOLS_TO_PATH", defaultValue: true);
                     bool nologo =

diff --git a/src/Cli/dotnet/README.md b/src/Cli/dotnet/README.md
@@ -82,6 +82,6 @@ The primary package cache. If not set, it defaults to $HOME/.nuget/packages on U
 
 Specifies the location of the servicing index to use by the shared host when loading the runtime.
 
-`DOTNET_CLI_TELEMETRY_OPTOUT`
+`DO_NOT_TRACK` or `DOTNET_CLI_TELEMETRY_OPTOUT`
 
 Specifies whether data about the .NET Core tools usage is collected and sent to Microsoft. **true** to opt-out of the telemetry feature (values true, 1 or yes accepted); otherwise, **false** (values false, 0 or no accepted). If not set, it defaults to **false**, that is, the telemetry feature is on.
diff --git a/src/Cli/dotnet/Telemetry/Telemetry.cs b/src/Cli/dotnet/Telemetry/Telemetry.cs
@@ -23,6 +23,7 @@ public class Telemetry : ITelemetry
 
         private const string InstrumentationKey = "74cc1c9e-3e6e-4d05-b3fc-dde9101d0254";
         private const string TelemetryOptout = "DOTNET_CLI_TELEMETRY_OPTOUT";
+        private const string TelemetryOptoutCommon = "DO_NOT_TRACK";
 
         public bool Enabled { get; }
 
@@ -42,7 +43,9 @@ public Telemetry(
                 environmentProvider = new EnvironmentProvider();
             }
 
-            Enabled = !environmentProvider.GetEnvironmentVariableAsBool(TelemetryOptout, false) && PermissionExists(sentinel);
+            Enabled = !environmentProvider.GetEnvironmentVariableAsBool(TelemetryOptout, false)
+                   && !environmentProvider.GetEnvironmentVariableAsBool(TelemetryOptoutCommon, false)
+                   && PermissionExists(sentinel);
 
             if (!Enabled)
             {

diff --git a/...Microsoft.DotNet.Configurer.UnitTests/GivenADotnetFirstTimeUseConfigurerWIthStateSetup.cs b/...Microsoft.DotNet.Configurer.UnitTests/GivenADotnetFirstTimeUseConfigurerWIthStateSetup.cs
@@ -86,6 +86,7 @@ bool telemetrySecondRunShouldBeEnabled
             _environmentProvider
                 .Setup(p => p.GetEnvironmentVariableAsBool("DOTNET_GENERATE_ASPNET_CERTIFICATE", It.IsAny<bool>()))
                 .Returns(DOTNET_GENERATE_ASPNET_CERTIFICATE);
+            // XXX: Handle DO_NOT_TRACK?
             _environmentProvider
                 .Setup(p => p.GetEnvironmentVariableAsBool("DOTNET_CLI_TELEMETRY_OPTOUT", It.IsAny<bool>()))
                 .Returns(DOTNET_CLI_TELEMETRY_OPTOUT);
@@ -215,7 +216,8 @@ private Telemetry RunConfigUsingMocks(bool isInstallerRun)
             bool generateAspNetCertificate =
                  _environmentProviderObject.GetEnvironmentVariableAsBool("DOTNET_GENERATE_ASPNET_CERTIFICATE", true);
             bool telemetryOptout =
-                _environmentProviderObject.GetEnvironmentVariableAsBool("DOTNET_CLI_TELEMETRY_OPTOUT", false);
+                _environmentProviderObject.GetEnvironmentVariableAsBool("DOTNET_CLI_TELEMETRY_OPTOUT", false)
+             || _environmentProviderObject.GetEnvironmentVariableAsBool("DO_NOT_TRACK", false);
             bool addGlobalToolsToPath =
                 _environmentProviderObject.GetEnvironmentVariableAsBool("DOTNET_ADD_GLOBAL_TOOLS_TO_PATH", defaultValue: true);
             bool nologo =

diff --git a/src/Tests/Microsoft.NET.Sdk.Publish.Tasks.Tests/EnvironmentHelperTests.cs b/src/Tests/Microsoft.NET.Sdk.Publish.Tasks.Tests/EnvironmentHelperTests.cs
@@ -10,30 +10,38 @@ namespace Microsoft.NET.Sdk.Publish.Tasks.Tests
     public class EnvironmentHelperTests
     {
         private const string TelemetryOptout = "DOTNET_CLI_TELEMETRY_OPTOUT";
+        private const string TelemetryOptoutCommon = "DO_NOT_TRACK";
 
         [Theory]
-        [InlineData("true", true)]
-        [InlineData("1", true)]
-        [InlineData("yes", true)]
-        [InlineData("false", false)]
-        [InlineData("0", false)]
-        [InlineData("no", false)]
-        [InlineData("anyothervalue", false)]
-        public void WebConfigTelemetry_RemovesProjectGuid_IfCLIOptedOutEnvVariableIsSet(string value, bool expectedOutput)
+        [InlineData(TelemetryOptout, "true", true)]
+        [InlineData(TelemetryOptout, "1", true)]
+        [InlineData(TelemetryOptout, "yes", true)]
+        [InlineData(TelemetryOptout, "false", false)]
+        [InlineData(TelemetryOptout, "0", false)]
+        [InlineData(TelemetryOptout, "no", false)]
+        [InlineData(TelemetryOptout, "anyothervalue", false)]
+        [InlineData(TelemetryOptoutCommon, "true", true)]
+        [InlineData(TelemetryOptoutCommon, "1", true)]
+        [InlineData(TelemetryOptoutCommon, "yes", true)]
+        [InlineData(TelemetryOptoutCommon, "false", false)]
+        [InlineData(TelemetryOptoutCommon, "0", false)]
+        [InlineData(TelemetryOptoutCommon, "no", false)]
+        [InlineData(TelemetryOptoutCommon, "anyothervalue", false)]
+        public void WebConfigTelemetry_RemovesProjectGuid_IfCLIOptedOutEnvVariableIsSet(string variable, string value, bool expectedOutput)
         {
             // Arrange
-            string originalValue = Environment.GetEnvironmentVariable(TelemetryOptout);
-            Environment.SetEnvironmentVariable(TelemetryOptout, value);
+            string originalValue = Environment.GetEnvironmentVariable(variable);
+            Environment.SetEnvironmentVariable(variable, value);
 
             // Act
-            bool actualOutput = EnvironmentHelper.GetEnvironmentVariableAsBool(TelemetryOptout);
+            bool actualOutput = EnvironmentHelper.GetEnvironmentVariableAsBool(variable);
 
 
             // Assert
             Assert.Equal<bool>(expectedOutput, actualOutput);
 
             // reset the value back to the original value
-            Environment.SetEnvironmentVariable(TelemetryOptout, originalValue);
+            Environment.SetEnvironmentVariable(variable, originalValue);
         }
     }
 }
diff --git a/src/Tests/dotnet.Tests/GivenThatTheUserIsRunningDotNetForTheFirstTime.cs b/src/Tests/dotnet.Tests/GivenThatTheUserIsRunningDotNetForTheFirstTime.cs
@@ -143,16 +143,18 @@ public void ItCreatesAnAspNetCertificateSentinelFileUnderTheDotDotNetFolder()
                 .HaveFile($"{GetDotnetVersion()}.aspNetCertificateSentinel");
         }
 
-        [Fact]
-        public void ItDoesNotCreateAFirstUseSentinelFileNorAnAspNetCertificateSentinelFileUnderTheDotDotNetFolderWhenInternalReportInstallSuccessIsInvoked()
+        [Theory]
+        [InlineData("DOTNET_CLI_TELEMETRY_OPTOUT")]
+        [InlineData("DO_NOT_TRACK")]
+        public void ItDoesNotCreateAFirstUseSentinelFileNorAnAspNetCertificateSentinelFileUnderTheDotDotNetFolderWhenInternalReportInstallSuccessIsInvoked(string telemetryOptoutVariableName)
         {
             var dotnetFirstTime = new DotNetFirstTime();
 
             var command = dotnetFirstTime.Setup(Log, _testAssetsManager);
 
             // Disable telemetry to prevent the creation of the .dotnet folder
             // for machineid and docker cache files
-            command = command.WithEnvironmentVariable("DOTNET_CLI_TELEMETRY_OPTOUT", "true");
+            command = command.WithEnvironmentVariable(telemetryOptoutVariableName, "true");
 
             command.Execute("internal-reportinstallsuccess", "test").Should().Pass();