/// <summary>
/// 获取路由表
/// </summary>
/// <param name="ipForwardTable"></param>
/// <returns></returns>
public unsafe static int GetIpForwardTable(out Route[] 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 Route[(*table).dwNumEntries];
for (int i = 0; i < ipForwardTable.Length; i++)
{
ipForwardTable[i] = new Route((&(*table).table)[i]);
}
}
else
{
ipForwardTable = null;
}
Marshal.FreeHGlobal((IntPtr)table);
return(res);
}
private unsafe static List <MIB_IPFORWARDROW> GetRoutingTable()
{
var retVal = new List <MIB_IPFORWARDROW>();
var size = Marshal.SizeOf(typeof(MIB_IPFORWARDROW));
MIB_IPFORWARDTABLE *fwdTable = (MIB_IPFORWARDTABLE *)Marshal.AllocHGlobal(size);
var result = GetIpForwardTable(fwdTable, ref size, true);
if (result == 0x7A)
{
fwdTable = (MIB_IPFORWARDTABLE *)Marshal.ReAllocHGlobal((IntPtr)fwdTable, (IntPtr)size);
result = GetIpForwardTable(fwdTable, ref size, true);
}
if (result == 0x00)
{
retVal = Enumerable.Range(0, fwdTable->dwNumEntries)
.Select(i => new MIB_IPFORWARDROW
{
dwForwardDest = (&fwdTable->table)[i].dwForwardDest,
dwForwardMask = (&fwdTable->table)[i].dwForwardMask,
dwForwardPolicy = (&fwdTable->table)[i].dwForwardPolicy,
dwForwardNextHop = (&fwdTable->table)[i].dwForwardNextHop,
dwForwardIfIndex = (&fwdTable->table)[i].dwForwardIfIndex,
dwForwardType = (&fwdTable->table)[i].dwForwardType,
dwForwardProto = (&fwdTable->table)[i].dwForwardProto,
dwForwardAge = (&fwdTable->table)[i].dwForwardAge,
dwForwardNextHopAS = (&fwdTable->table)[i].dwForwardNextHopAS,
dwForwardMetric1 = (&fwdTable->table)[i].dwForwardMetric1,
dwForwardMetric2 = (&fwdTable->table)[i].dwForwardMetric2,
dwForwardMetric3 = (&fwdTable->table)[i].dwForwardMetric3,
dwForwardMetric4 = (&fwdTable->table)[i].dwForwardMetric4,
dwForwardMetric5 = (&fwdTable->table)[i].dwForwardMetric5
})
.ToList();
}
Marshal.FreeHGlobal((IntPtr)fwdTable);
return(retVal);
}
private unsafe static extern int GetIpForwardTable(MIB_IPFORWARDTABLE *pIpForwardTable, ref int pdwSize, bool bOrder);
public static extern uint GetIpForwardTable([NativeTypeName("PMIB_IPFORWARDTABLE")] MIB_IPFORWARDTABLE *pIpForwardTable, [NativeTypeName("PULONG")] uint *pdwSize, BOOL bOrder);
