@msdn=http://search.microsoft.com/search/results.aspx?qu=$$$ @pinvoke=http://pinvoke.net/$$$.htm Summary: TODO - a short description !!!!C# Signature: [DllImport("iphlpapi.dll", SetLastError = true)] public static extern uint GetExtendedUdpTable(IntPtr pTcpTable, ref int dwOutBufLen, bool sort, int ipVersion, UDP_TABLE_CLASS tblClass, uint reserved = 0); !!!!VB Signature: !!!!User-Defined Types: public enum UDP_TABLE_CLASS { UDP_TABLE_BASIC, UDP_TABLE_OWNER_PID, UDP_TABLE_OWNER_MODULE } [StructLayout(LayoutKind.Sequential)] public struct MIB_UDP6ROW_OWNER_PID { [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)] public byte[] localAddr; public uint localScopeId; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)] public byte[] localPort; public long LocalScopeId { get { return localScopeId; } } public IPAddress LocalAddress { get { return new IPAddress(localAddr, LocalScopeId); } } public ushort LocalPort { get { return BitConverter.ToUInt16(localPort.Take(2).Reverse().ToArray(), 0); } } } [StructLayout(LayoutKind.Sequential)] public struct MIB_UDP6TABLE_OWNER_PID { public uint dwNumEntries; [MarshalAs(UnmanagedType.ByValArray, ArraySubType = UnmanagedType.Struct, SizeConst = 1)] public MIB_UDP6ROW_OWNER_PID[] table; } [StructLayout(LayoutKind.Sequential)] public struct MIB_UDPTABLE_OWNER_PID { public uint dwNumEntries; [MarshalAs(UnmanagedType.ByValArray, ArraySubType = UnmanagedType.Struct, SizeConst = 1)] public MIB_UDPROW_OWNER_PID[] table; } [StructLayout(LayoutKind.Sequential)] public struct MIB_UDPROW_OWNER_PID { public uint localAddr; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)] public byte[] localPort; public uint owningPid; public uint ProcessId { get { return owningPid; } } public IPAddress LocalAddress { get { return new IPAddress(localAddr); } } public ushort LocalPort { get { return BitConverter.ToUInt16(new byte[2] { localPort[1], localPort[0] }, 0); } } } !!!!Alternative Managed API: Do you know one? Please contribute it! !!!!Notes: public const int AF_INET = 2; // IP_v4 = System.Net.Sockets.AddressFamily.InterNetwork public const int AF_INET6 = 23; // IP_v6 = System.Net.Sockets.AddressFamily.InterNetworkV6 public static List<MIB_UDPROW_OWNER_PID> GetAllUDPConnections() { return GetUDPConnections<MIB_UDPROW_OWNER_PID, MIB_UDPTABLE_OWNER_PID>(AF_INET); } private static List<IPR> GetUDPConnections<IPR, IPT>(int ipVersion)//IPR = Row Type, IPT = Table Type { IPR[] tableRows; int buffSize = 0; var dwNumEntriesField = typeof(IPT).GetField("dwNumEntries"); // how much memory do we need? uint ret = GetExtendedUdpTable(IntPtr.Zero, ref buffSize, true, ipVersion, UDP_TABLE_CLASS.UDP_TABLE_OWNER_PID); IntPtr tcpTablePtr = Marshal.AllocHGlobal(buffSize); try { ret = GetExtendedUdpTable(tcpTablePtr, ref buffSize, true, ipVersion, UDP_TABLE_CLASS.UDP_TABLE_OWNER_PID); if (ret != 0) return new List<IPR>(); // get the number of entries in the table IPT table = (IPT)Marshal.PtrToStructure(tcpTablePtr, typeof(IPT)); int rowStructSize = Marshal.SizeOf(typeof(IPR)); uint numEntries = (uint)dwNumEntriesField.GetValue(table); // buffer we will be returning tableRows = new IPR[numEntries]; IntPtr rowPtr = (IntPtr)((long)tcpTablePtr + 4); for (int i = 0; i < numEntries; i++) { IPR tcpRow = (IPR)Marshal.PtrToStructure(rowPtr, typeof(IPR)); tableRows[i] = tcpRow; rowPtr = (IntPtr)((long)rowPtr + rowStructSize); // next entry } } finally { // Free the Memory Marshal.FreeHGlobal(tcpTablePtr); } return tableRows != null ? tableRows.ToList() : new List<IPR>(); } !!!!Tips & Tricks: Please add some! !!!!Sample Code: Please add some! Documentation: GetExtendedUdpTable@msdn on MSDN
Edit user32.GetExtende...
You do not have permission to change this page. If you feel this is in error, please send feedback with the contact link on the main page.