Introducing .NET 4.0: with Visual Studio 2010

4.12. Network Class Libraries

All classes in the System.Net namespace have improved stability and performance. Standards compliance has been improved for FTP, HTTP, SMTP, and URIs, with better support for internationalization.

NOTE

At the time of writing, little information is available about these changes, so I apologize for the lack of detail.

4.12.1. IPv6 Support

Applications running on Vista onward can now handle multiple versions of the IP protocol (v4 and v6) by setting the IPv6Only option to false when creating the socket.

4.12.2. HttpWebRequest

HttpWebRequest has had two new properties added:

• Date, for setting the HTTP date header

• Host, for setting the HTTP host header (this can be useful for testing load balancing scenarios to test ...