System.Net.NetworkInformation.Win32IPGlobalProperties.GetActiveUdpListeners C# (CSharp) Method

		public unsafe override IPEndPoint [] GetActiveUdpListeners ()
		{
			List<IPEndPoint> list = new List<IPEndPoint> ();

			byte [] bytes4 = null;
			int size4 = 0;
			GetUdpTable (null, ref size4, true); // get size
			bytes4 = new byte [size4];
			GetUdpTable (bytes4, ref size4, true); // get list

			int structSize4 = Marshal.SizeOf (typeof (Win32_MIB_UDPROW));

			fixed (byte* ptr = bytes4) {
				int count = Marshal.ReadInt32 ((IntPtr) ptr);
				for (int i = 0; i < count; i++) {
					Win32_MIB_UDPROW row = new Win32_MIB_UDPROW ();
					Marshal.PtrToStructure ((IntPtr) (ptr + i * structSize4 + 4), row);
					list.Add (row.LocalEndPoint);
				}
			}

			if (Environment.OSVersion.Version.Major >= 6) { // Vista
				byte [] bytes6 = null;
				int size6 = 0;
				GetUdp6Table (null, ref size6, true); // get size
				bytes6 = new byte [size6];
				GetUdp6Table (bytes6, ref size6, true); // get list

				int structSize6 = Marshal.SizeOf (typeof (Win32_MIB_UDP6ROW));

				fixed (byte* ptr = bytes6) {
					int count = Marshal.ReadInt32 ((IntPtr) ptr);
					for (int i = 0; i < count; i++) {
						Win32_MIB_UDP6ROW row = new Win32_MIB_UDP6ROW ();
						Marshal.PtrToStructure ((IntPtr) (ptr + i * structSize6 + 4), row);
						list.Add (row.LocalEndPoint);
					}
				}
			}

			return list.ToArray ();
		}