/// <summary>取得基礎路由。</summary>
/// <param name="destAddr"></param>
/// <param name="sourceAddr"></param>
/// <param name="bestRoute"></param>
/// <returns></returns>
public static int GetBestRoute(IPAddress destAddr, IPAddress sourceAddr, out IPForwardRow bestRoute)
{
var res = GetBestRoute(IpToUint(destAddr), IpToUint(sourceAddr), out IPFORWARDROW pBestRoute);
bestRoute = new IPForwardRow(pBestRoute);
return(res);
}
/// <summary>建立路由。</summary>
/// <param name="dest"></param>
/// <param name="mask"></param>
/// <param name="nextHop"></param>
/// <param name="ifIndex"></param>
/// <param name="metric"></param>
/// <returns></returns>
public static int CreateIpForwardEntry(IPAddress dest, IPAddress mask, IPAddress nextHop, uint ifIndex, int metric = 1)
{
IPForwardRow route = new IPForwardRow()
{
Dest = dest,
Mask = mask,
NextHop = nextHop,
IfIndex = ifIndex,
Metric = metric,
Policy = 0,
Type = MIB_IPFORWARD_TYPE.MIB_IPROUTE_TYPE_DIRECT,
Proto = MIB_IPPROTO.MIB_IPPROTO_NETMGMT,
Age = 0,
NextHopAS = 0
};
OperatingSystem os = Environment.OSVersion;
if (os.Platform == PlatformID.Win32NT && os.Version.Major >= 6)
{
int res = GetIpInterfaceEntry(ifIndex, out MIB_IPINTERFACE_ROW row);
if (res != 0)
{
return(res);
}
route.Metric = (int)row.Metric;
}
return(CreateIpForwardEntry(route));
}
/// <summary>取得路由表。</summary>
/// <param name="ipForwardTable">[OUT]傳回的路由表。</param>
/// <returns></returns>
public static int GetIpForwardTable(out IPForwardRow[] ipForwardTable)
{
var fwdTable = IntPtr.Zero;
int size = 0;
var result = GetIpForwardTable(fwdTable, ref size, true);
fwdTable = Marshal.AllocHGlobal(size);
result = GetIpForwardTable(fwdTable, ref size, true);
if (result == 0)
{
var res = (IPForwardTable)Marshal.PtrToStructure(fwdTable, typeof(IPForwardTable));
ipForwardTable = new IPForwardRow[res.Size];
IntPtr p = new IntPtr(fwdTable.ToInt64() + Marshal.SizeOf(res.Size));
for (int i = 0; i < res.Size; i++)
{
ipForwardTable[i] = new IPForwardRow((IPFORWARDROW)Marshal.PtrToStructure(p, typeof(IPFORWARDROW)));
p = new IntPtr(p.ToInt64() + Marshal.SizeOf(typeof(IPFORWARDROW)));
}
}
else
{
ipForwardTable = null;
}
Marshal.FreeHGlobal(fwdTable);
return(result);
}
/// <summary>刪除路由</summary>
/// <param name="route"></param>
/// <returns></returns>
public static int DeleteIpForwardEntry(IPForwardRow route)
{
return(DeleteIpForwardEntry(route.GetBaseStruct()));
}
