core/release-notes/1.0/Release-Notes-RC1.md

Release Notes

RC1 released 11/18/2015

Full details on this release can be read about in this blog post: Announcing .NET Core and ASP.NET 5 RC

Supported platforms for this release are Ubuntu 14.04 LTS, OS X 10.10, and Windows 7+.

Dependencies

.NET Core RC1 on Linux and OSX take dependencies on the following libraries:

• libc, librt: I/O, process management, time, etc.
• libunwind: call chain determination for exception handling and stack traces
• gettext: resource strings
• libicu: globalization
• liblttng: runtime tracing
• libuuid: guid generation
• libcurl: HTTP
• libssl & libcrypto: cryptography
• libz: deflate and gzip
• procfs & Core Foundation / Services: process and networking information on Linux and OSX

Compilation

• Support csc compiler on .NET Core on Linux and OSX
• Support vbc compiler on .NET Core on Linux and OSX

Runtime

• GC/thread suspension for Linux and OSX
• Integration of exception handling with debugger and crash dumps
• Support for LLDB and SOS on Linux
• RyuJIT ported to Linux and OSX, including JIT and crossgen
• RyuJIT implements calling convention for structs passing on Linux and OSX
• Runtime performance improvements
• Native eventing support via LTTNG for Linux
• Added 2800 Windows tests

BCL

• More complete System.Globalization support on Linux and OSX
• IDNA2008 support for internationalized domain names
• X509 certificate support
• System.Security.Cryptography.EcDSA class is supported on all platforms
• CryptographicException contains both the numeric code (via the HResult property) and the message instead of the code only on Windows and the message only on Unix
• System.IO 260 character (MAX_PATH) length limit removed on all OS (.NET Core only)

Network

• System.Net.Http, System.Net.Primitives, System.Net.NameResolution, and System.Net.Sockets implement most features
• System.Net.Sockets has new Task Parallel Library methods, and removed Begin/End pattern methods for consistency with other .NET Core APIs
• System.Net.Http.WinHttpHandler updated to be fully asynchronous and scalable
• System.Net.NetworkInformation available on all platforms
• Basic support for System.Net.Security.SslStream: SslStream is enabled for Unix; AuthenticateAsServer works with an RSA certificate, and AuthenticateAsClient works without requiring a client authentication certificate
• System.Net.Security.SslStream supports ECDSA certificates, and IP address SubjectAltNames are supported for host matching

Data

• System.Data.SqlClient available on all platforms (MARS not yet supported)

List of issues closed

The lists of issues closed for this and past releases can be found here:

• CLR issues
• BCL issues

List of commits

The lists of commits for this release can be viewed here:

• CLR commits
• BCL commits