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Release Notes

Microsoft.Data.SqlClient 2.0.0-preview1.20021.1 released 21 January 2020

This update brings the below changes over the previous release:

Added

  • Added support to allow large UDT buffer size (upto Int.MaxValue) as supported by SQL Server starting TDS 7.3 #340

Fixed

  • Fixed issues with SqlCommandSet not working with Byte Array parameters #360
  • Fixed Statement command cancellation in Managed SNI #248 - Ported dotnet/corefx#38271
  • Fixed zero connection timeout issue in Managed SNI #332
  • Fixed "DataType" metadata information for TinyInt datatype to be System.Byte #338
  • Fixed driver behavior to use CancellationTokenResource only for non-infinite timeout and cleanup after usage #339
  • Fixed ConnectionTime and ClientConnectionId reported by SqlStatistics when connection is closed #341
  • Fixed deadlock issues by reverting async changes to SNIPacket #349

Changes

  • Improved performance of Managed SNI by removing double fetch of domain name #366
  • Improved performance of Async Method Allocations in Managed SNI #328
  • Improved performance of Managed SNI by enhancing utilization of resources #173 - Ported dotnet/corefx#35363 and dotnet/corefx#40732
  • Improved performance of Managed SNI RPC Parameter Usage #209 - Ported dotnet/corefx#34049
  • Changed enclave key map to be lazy initialized #372
  • Changed Receive() and ReceiveAsync() implementation to receive null packets on failure #350
  • Changed EnclaveProviderBase caching implementation to support Async Scenarios (Introduces breaking changes) #346

Breaking Changes

  • Public APIs in SqlColumnEncryptionEnclaveProvider have been modified in PR #346 as under:

    [Applies to both .NET Framework and .NET Core targeting applications]

    CreateEnclaveSession()

    // Old Definition
public abstract void CreateEnclaveSession(byte[] enclaveAttestationInfo, System.Security.Cryptography.ECDiffieHellmanCng clientDiffieHellmanKey, string attestationUrl, string servername, out Microsoft.Data.SqlClient.SqlEnclaveSession sqlEnclaveSession, out long counter);

// New Definition
public abstract void CreateEnclaveSession(byte[] enclaveAttestationInfo, System.Security.Cryptography.ECDiffieHellmanCng clientDiffieHellmanKey, string attestationUrl, string servername, byte[] customData, int customDataLength, out Microsoft.Data.SqlClient.SqlEnclaveSession sqlEnclaveSession, out long counter);

    GetAttestationParameters()

    // Old Definition
public abstract Microsoft.Data.SqlClient.SqlEnclaveAttestationParameters GetAttestationParameters();

// New Definition
public abstract Microsoft.Data.SqlClient.SqlEnclaveAttestationParameters GetAttestationParameters(string attestationUrl, byte[] customData, int customDataLength);

    GetEnclaveSession()

    // Old Definition
public abstract void GetEnclaveSession(string serverName, string attestationUrl, out Microsoft.Data.SqlClient.SqlEnclaveSession sqlEnclaveSession, out long counter);

// New Definition
public abstract void GetEnclaveSession(string serverName, string attestationUrl, bool generateCustomData, out Microsoft.Data.SqlClient.SqlEnclaveSession sqlEnclaveSession, out long counter, out byte[] customData, out int customDataLength);

Target Platform Support

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

Dependencies

.NET Framework

  • System.Data.Common 4.3.0
  • Microsoft.Data.SqlClient.SNI 1.1.0
  • Microsoft.Identity.Client 3.0.8

.NET Core

  • Microsoft.Win32.Registry 4.5.0
  • runtime.native.System.Data.SqlClient.sni 4.4.0
  • System.Security.Principal.Windows 4.5.0
  • System.Text.Encoding.CodePages 4.5.0
  • System.Configuration.ConfigurationManager 4.5.0
  • Microsoft.Identity.Client 3.0.8

.NET Standard

  • Microsoft.Win32.Registry 4.5.0
  • runtime.native.System.Data.SqlClient.sni 4.4.0
  • System.Buffers 4.4.0
  • System.Diagnostics.DiagnosticSource 4.5.0
  • System.Memory 4.5.1
  • System.Security.Principal.Windows 4.5.0
  • System.Text.Encoding.CodePages 4.5.0
  • System.Configuration.ConfigurationManager 4.5.0
  • Microsoft.Identity.Client 3.0.8