/// <summary>
/// 创建路由
/// </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)
{
MIB_IPINTERFACE_ROW row;
int res = GetIpInterfaceEntry(ifIndex, out row);
if (res != 0)
{
return(res);
}
route.Metric = (int)row.Metric;
}
return(CreateIpForwardEntry(route));
}
/// <summary>
/// 获取路由表
/// </summary>
/// <param name="ipForwardTable"></param>
/// <returns></returns>
public unsafe static int GetIpForwardTable(out IPForwardRow[] ipForwardTable)
{
int res = 0, size = 0;
size = Marshal.SizeOf(typeof(MIB_IPFORWARDROW));
MIB_IPFORWARDTABLE *table = (MIB_IPFORWARDTABLE *)Marshal.AllocHGlobal(size);
res = GetIpForwardTable(table, ref size, true);
if (res == 0x7A)
{
table = (MIB_IPFORWARDTABLE *)Marshal.ReAllocHGlobal((IntPtr)table, (IntPtr)size);
res = GetIpForwardTable(table, ref size, true);
}
if (res == 0)
{
ipForwardTable = new IPForwardRow[(*table).dwNumEntries];
for (int i = 0; i < ipForwardTable.Length; i++)
{
ipForwardTable[i] = new IPForwardRow((&(*table).table)[i]);
}
}
else
{
ipForwardTable = null;
}
Marshal.FreeHGlobal((IntPtr)table);
return(res);
}
/// <summary>
/// 获取基础路由
/// </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)
{
MIB_IPFORWARDROW pBestRoute;
var res = GetBestRoute(IpToUint(destAddr), IpToUint(sourceAddr), out pBestRoute);
bestRoute = new IPForwardRow(pBestRoute);
return(res);
}
/// <summary>
/// 获取单条路由信息
/// </summary>
/// <param name="destAddr"></param>
/// <param name="route"></param>
/// <returns></returns>
public unsafe static int GetIpForwardEntry(IPAddress destAddr, out IPForwardRow route)
{
route = null;
IPForwardRow[] ipForwardTable;
var res = GetIpForwardTable(out ipForwardTable);
if (res == 0)
{
for (int i = 0; i < ipForwardTable.Length; i++)
{
if (ipForwardTable[i].Dest.Equals(destAddr))
{
route = ipForwardTable[i];
break;
}
}
}
return(res);
}
/// <summary>
/// 删除路由
/// </summary>
/// <param name="route"></param>
/// <returns></returns>
public static int DeleteIpForwardEntry(IPForwardRow route)
{
return(DeleteIpForwardEntry(route.GetBaseStruct()));
}
