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Release Notes

Microsoft.Data.SqlClient 2.1.0-preview1.20235.1 released 21 August 2020

This update brings the below changes over the previous release:

Added

  • Added support for Always Encrypted with secure enclaves on Unix for .NET Core 2.1+ and on all supported platforms for .NET Standard 2.1+ #676 [Read more]
  • Added support for Azure Active Directory Device Code Flow authentication #597 [Read more]
  • Added new APIs to enable customizations for "Active Directory Interactive" authentication experience #597 Read more
  • Added Sensitivity Rank support in Sensitivity Classification information #626 [Read more]
  • Added support to obtain ServerProcessId() (SPID) information on an active SqlConnection instance #660 [Read more]
  • Added support for a new Configuration Section, SqlClientAuthenticationProviders (duplicate of existing SqlAuthenticationProviders), to allow co-existence of configurations for both drivers, "System.Data.SqlClient" and "Microsoft.Data.SqlClient" #702 [Read more]
  • Added TraceLogging in Native SNI to extend SqlClientEventSource support #650 [Read more]
  • Updated Microsoft.Data.SqlClient.SNI (.NET Framework dependency) and Microsoft.Data.SqlClient.SNI.runtime (.NET Core/Standard dependency) version to v2.1.0 with trace logging implementation #705

Fixed

  • Fixed Enclave session cache issue with Azure Database #686
  • Fixed pooled connection re-use on access token expiry issue when using Active Directory authentication modes #635
  • Fixed transient fault handling for Pooled connections #637
  • Fixed SPN generation issue when no port is provided #629
  • Fixed missing null checks for SqlErrors in SqlException for .NET Framework implementation #698

Changes

  • Performance improvements by fixing unnecessary allocations with EventSource implementation #684
  • Reverted changes to return empty DataTable from GetSchemaTable to return null as before. #696
  • Removed multiple CacheConnectionStringProperties calls when setting ConnectionString properties #683
  • Code Improvements by only checking inexact match when no exact match is found for an embedded resource #668
  • Changed _SqlMetaData to lazy initialize hidden column map #521
  • Renamed internal string resource file and helpers for .NET Core implementation #671
  • Performance improvements by reworking ExecuteReaderAsync to minimize allocations #528
  • Performance improvements by moving DataReader caches to internal connection #499
  • Moved common files to shared folder between .NET Framework and .NET Core implementation #618 #625

New features over Stable release v2.0

Cross-Platform support for Always Encrypted and Secure Enclaves

Microsoft.Data.SqlClient v2.1 extends support for Always Encrypted (including with secure enclaves) on the following platforms:

Target Framework Platform New Feature support
.NET Framework v4.6+ Windows No changes
.NET Core 2.1+ All Operating Systems Yes, Support on Linux/MacOS
.NET Standard 2.1+ All Operating Systems Yes, Support on All Operating Systems

Azure Active Directory Device Code Flow authentication

Microsoft.Data.SqlClient v2.1 provides support for "Device Code Flow" authentication with MSAL.NET. Reference documentation: OAuth2.0 Device Authorization Grant flow

Connection string example:

Server=<server>.database.windows.net; Authentication=Active Directory Device Code Flow; Database=Northwind;

The following API enables customization of the Device Code Flow callback mechanism:

public class ActiveDirectoryAuthenticationProvider
{
    // For .NET Framework, .NET Core and .NET Standard targeted applications
    public void SetDeviceCodeFlowCallback(Func<DeviceCodeResult, Task> deviceCodeFlowCallbackMethod)
}

Azure Active Directory Interactive authentication enhancements

Microsoft.Data.SqlClient v2.1 provides the following new APIs to enable customizations for the "Active Directory Interactive" authentication experience:

public class ActiveDirectoryAuthenticationProvider
{
    // For .NET Framework targeted applications only
    public void SetIWin32WindowFunc(Func<IWin32Window> iWin32WindowFunc);

    // For .NET Standard targeted applications only
    public void SetParentActivityOrWindowFunc(Func<object> parentActivityOrWindowFunc);

    // For .NET Framework, .NET Core and .NET Standard targeted applications
    public void SetAcquireAuthorizationCodeAsyncCallback(Func<Uri, Uri, CancellationToken, Task<Uri>> acquireAuthorizationCodeAsyncCallback);
}

Data Classification v2 support

Microsoft.Data.SqlClient v2.1 introduces support for Data Classification's "Sensitivity Rank" information. The following new APIs are now available:

public class SensitivityClassification
{
  public SensitivityRank SensitivityRank;
}

public class SensitivityProperty
{
  public SensitivityRank SensitivityRank;
}

public enum SensitivityRank
{
    NOT_DEFINED = -1,
    NONE = 0,
    LOW = 10,
    MEDIUM = 20,
    HIGH = 30,
    CRITICAL = 40
}

Server Process Id for an active SqlConnection

Microsoft.Data.SqlClient v2.1 introduces a new SqlConnection property, ServerProcessId, on an active connection.

public class SqlConnection
{
  // Returns the server process Id (SPID) of the active connection.
  public int ServerProcessId;
}

Trace Logging support in Native SNI

Microsoft.Data.SqlClient v2.1 extends the existing SqlClientEventSource implementation to enable event tracing in SNI.dll. Events must be captured using a tool like Xperf.

Tracing can be enabled by sending a command to SqlClientEventSource as illustrated below:

// Enables trace events:
EventSource.SendCommand(eventSource, (EventCommand)8192, null);

// Enables flow events:
EventSource.SendCommand(eventSource, (EventCommand)16384, null);

// Enables both trace and flow events:
EventSource.SendCommand(eventSource, (EventCommand)(8192 | 16384), null);

SqlClientAuthenticationProviders configuration section

Microsoft.Data.SqlClient v2.1 introduces a new configuration section, SqlClientAuthenticationProviders (a clone of the existing SqlAuthenticationProviders). The existing configuration section, SqlAuthenticationProviders, is still supported for backwards compatibility when the appropriate type is defined.

The new section allows application config files to contain both a SqlAuthenticationProviders section for System.Data.SqlClient and a SqlClientAuthenticationProviders section for Microsoft.Data.SqlClient.

Target Platform Support

  • .NET Framework 4.6+ (Windows x86, Windows x64)
  • .NET Core 2.1+ (Windows x86, Windows x64, Windows ARM64, Windows ARM, Linux, macOS)
  • .NET Standard 2.0+ (Windows x86, Windows x64, Windows ARM64, Windows ARM, Linux, macOS)

Dependencies

.NET Framework

  • Microsoft.Data.SqlClient.SNI 2.1.0
  • Microsoft.Identity.Client 4.14.0
  • Microsoft.IdentityModel.Protocols.OpenIdConnect 5.6.0
  • Microsoft.IdentityModel.JsonWebTokens 5.6.0

.NET Core 2.1

  • Microsoft.Data.SqlClient.SNI.runtime 2.1.0
  • Microsoft.Win32.Registry 4.7.0
  • System.Security.Principal.Windows 4.7.0
  • System.Text.Encoding.CodePages 4.7.0
  • System.Diagnostics.DiagnosticSource 4.7.0
  • System.Configuration.ConfigurationManager 4.7.0
  • System.Runtime.Caching 4.7.0
  • Microsoft.Identity.Client 4.14.0
  • Microsoft.IdentityModel.Protocols.OpenIdConnect 5.6.0
  • Microsoft.IdentityModel.JsonWebTokens 5.6.0

.NET Core 3.1

  • Microsoft.Data.SqlClient.SNI.runtime 2.1.0
  • Microsoft.Win32.Registry 4.7.0
  • System.Security.Principal.Windows 4.7.0
  • System.Text.Encoding.CodePages 4.7.0
  • System.Diagnostics.DiagnosticSource 4.7.0
  • System.Configuration.ConfigurationManager 4.7.0
  • System.Runtime.Caching 4.7.0
  • Microsoft.Identity.Client 4.14.0
  • Microsoft.IdentityModel.Protocols.OpenIdConnect 5.6.0
  • Microsoft.IdentityModel.JsonWebTokens 5.6.0

.NET Standard 2.0

  • Microsoft.Data.SqlClient.SNI.runtime 2.1.0
  • Microsoft.Win32.Registry 4.7.0
  • System.Buffers 4.5.1
  • System.Memory 4.5.4
  • System.Security.Principal.Windows 4.7.0
  • System.Text.Encoding.CodePages 4.7.0
  • Microsoft.Identity.Client 4.14.0
  • Microsoft.IdentityModel.Protocols.OpenIdConnect 5.6.0
  • Microsoft.IdentityModel.JsonWebTokens 5.6.0

.NET Standard 2.1

  • Microsoft.Data.SqlClient.SNI.runtime 2.1.0
  • Microsoft.Win32.Registry 4.7.0
  • System.Buffers 4.5.1
  • System.Memory 4.5.4
  • System.Security.Principal.Windows 4.7.0
  • System.Text.Encoding.CodePages 4.7.0
  • Microsoft.Identity.Client 4.14.0
  • Microsoft.IdentityModel.Protocols.OpenIdConnect 5.6.0
  • Microsoft.IdentityModel.JsonWebTokens 5.6.0