public static void CreateRoute(string destination, string mask, string gateway, uint interfaceIndex, int metric)
{
MibIPForwardRow route = new MibIPForwardRow
{
DwForwardDest = BitConverter.ToUInt32(IPAddress.Parse(destination).GetAddressBytes(), 0),
DwForwardMask = BitConverter.ToUInt32(IPAddress.Parse(mask).GetAddressBytes(), 0),
DwForwardNextHop = BitConverter.ToUInt32(IPAddress.Parse(gateway).GetAddressBytes(), 0),
DwForwardMetric1 = Convert.ToUInt32(metric),
DwForwardType = MibIPRouteTypeDirect,
DwForwardProto = MibIPProtoNetmgmt,
DwForwardAge = 0,
DwForwardPolicy = 0,
DwForwardNextHopAS = 0,
DwForwardIfIndex = Convert.ToUInt32(interfaceIndex)
};
IntPtr ptr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(MibIPForwardRow)));
try
{
Marshal.StructureToPtr(route, ptr, false);
PInvoke.CreateIpForwardEntry(ptr);
}
finally
{
Marshal.FreeHGlobal(ptr);
}
}
public static IPForwardTable ReadIPForwardTable(IntPtr tablePtr)
{
IPForwardTable result = (IPForwardTable)Marshal.PtrToStructure(tablePtr, typeof(IPForwardTable));
MibIPForwardRow[] table = new MibIPForwardRow[result.Size];
IntPtr p = new IntPtr(tablePtr.ToInt64() + Marshal.SizeOf(result.Size));
for (int i = 0; i < result.Size; ++i)
{
table[i] = (MibIPForwardRow)Marshal.PtrToStructure(p, typeof(MibIPForwardRow));
p = new IntPtr(p.ToInt64() + Marshal.SizeOf(typeof(MibIPForwardRow)));
}
result.Table = table;
return(result);
}