System.Net.Sockets is not in .NET 4.0?

[t7ancients]

I was going to test out a client/server with a friend, but when I looked for System.Net.Sockets, it wasn't there? I know other people have used it in 4.0, but can anyone help me find out why I do not have it? I'm a little mad, I wanted to start experimenting with it -_-

Damn, seems like microsoft moves the class from namespace to namespace every time they release a new version of .NET, I found it. It's in the system.dll namespace. you can close this thread @_@

[NextGen1]

Same in all frameworks....Hasn't changed

Namespace (even in 4) is System.Net.Sockets
Assembly (even in 4 ) is System (in System.dll)

using System;
using System.Net;
using System.Net.Sockets;