internal static extern uint IcmpSendEcho2(SafeCloseIcmpHandle icmpHandle, IntPtr Event, IntPtr apcRoutine, IntPtr apcContext, uint ipAddress, [In] SafeLocalFree data, ushort dataSize, ref IPOptions options, SafeLocalFree replyBuffer, uint replySize, uint timeout);
internal static extern uint GetAdaptersAddresses(AddressFamily family, uint flags, IntPtr pReserved, SafeLocalFree adapterAddresses, ref uint outBufLen);
internal static extern uint GetTcpTable2(SafeLocalFree pTcpTable, ref uint dwOutBufLen, bool order);
private static SystemNetworkInterface[] PostWin2KGetNetworkInterfaces(AddressFamily family)
{
FixedInfo fixedInfo = SystemIPGlobalProperties.GetFixedInfo();
SystemNetworkInterface[] adaptersAddresses = null;
Label_0008:
try
{
adaptersAddresses = GetAdaptersAddresses(family, fixedInfo);
}
catch (NetworkInformationException exception)
{
if (exception.ErrorCode != 1L)
{
throw;
}
goto Label_0008;
}
if (Socket.OSSupportsIPv4)
{
uint pOutBufLen = 0;
uint adaptersInfo = 0;
SafeLocalFree pAdapterInfo = null;
if ((family == AddressFamily.Unspecified) || (family == AddressFamily.InterNetwork))
{
adaptersInfo = UnsafeNetInfoNativeMethods.GetAdaptersInfo(SafeLocalFree.Zero, ref pOutBufLen);
int num3 = 0;
while (adaptersInfo == 0x6f)
{
try
{
pAdapterInfo = SafeLocalFree.LocalAlloc((int)pOutBufLen);
adaptersInfo = UnsafeNetInfoNativeMethods.GetAdaptersInfo(pAdapterInfo, ref pOutBufLen);
if (adaptersInfo == 0)
{
IntPtr handle = pAdapterInfo.DangerousGetHandle();
while (handle != IntPtr.Zero)
{
IpAdapterInfo ipAdapterInfo = (IpAdapterInfo)Marshal.PtrToStructure(handle, typeof(IpAdapterInfo));
for (int i = 0; i < adaptersAddresses.Length; i++)
{
if ((adaptersAddresses[i] != null) && (ipAdapterInfo.index == adaptersAddresses[i].index))
{
if (!adaptersAddresses[i].interfaceProperties.Update(fixedInfo, ipAdapterInfo))
{
adaptersAddresses[i] = null;
num3++;
}
break;
}
}
handle = ipAdapterInfo.Next;
}
}
continue;
}
finally
{
if (pAdapterInfo != null)
{
pAdapterInfo.Close();
}
}
}
if (num3 != 0)
{
SystemNetworkInterface[] interfaceArray2 = new SystemNetworkInterface[adaptersAddresses.Length - num3];
int num5 = 0;
for (int j = 0; j < adaptersAddresses.Length; j++)
{
if (adaptersAddresses[j] != null)
{
interfaceArray2[num5++] = adaptersAddresses[j];
}
}
adaptersAddresses = interfaceArray2;
}
}
if ((adaptersInfo != 0) && (adaptersInfo != 0xe8))
{
throw new NetworkInformationException((int)adaptersInfo);
}
}
return(adaptersAddresses);
}
/// <summary>Gets the active udp listeners. Uses the native GetUdpTable api.</summary>
public override IPEndPoint[] GetActiveUdpListeners()
{
uint size = 0;
uint result = 0;
SafeLocalFree buffer = null;
List <IPEndPoint> udpListeners = new List <IPEndPoint>();
// Check if it support IPv4 for IPv6 only modes.
if (Socket.OSSupportsIPv4)
{
// Get the size of buffer needed
result = UnsafeNetInfoNativeMethods.GetUdpTable(SafeLocalFree.Zero, ref size, true);
while (result == IpHelperErrors.ErrorInsufficientBuffer)
{
try {
//allocate the buffer and get the udptable
buffer = SafeLocalFree.LocalAlloc((int)size);
result = UnsafeNetInfoNativeMethods.GetUdpTable(buffer, ref size, true);
if (result == IpHelperErrors.Success)
{
//the table info just gives us the number of rows.
IntPtr newPtr = buffer.DangerousGetHandle();
MibUdpTable udpTableInfo = (MibUdpTable)Marshal.PtrToStructure(newPtr, typeof(MibUdpTable));
if (udpTableInfo.numberOfEntries > 0)
{
//we need to skip over the tableinfo to get the inline rows
newPtr = (IntPtr)((long)newPtr + Marshal.SizeOf(udpTableInfo.numberOfEntries));
for (int i = 0; i < udpTableInfo.numberOfEntries; i++)
{
MibUdpRow udpRow = (MibUdpRow)Marshal.PtrToStructure(newPtr, typeof(MibUdpRow));
int localPort = udpRow.localPort1 << 8 | udpRow.localPort2;
udpListeners.Add(new IPEndPoint(udpRow.localAddr, (int)localPort));
//we increment the pointer to the next row
newPtr = (IntPtr)((long)newPtr + Marshal.SizeOf(udpRow));
}
}
}
}
finally {
if (buffer != null)
{
buffer.Close();
}
}
}
// if we don't have any ipv4 interfaces detected, just continue
if (result != IpHelperErrors.Success && result != IpHelperErrors.ErrorNoData)
{
throw new NetworkInformationException((int)result);
}
}
if (Socket.OSSupportsIPv6)
{
// Get the size of buffer needed
size = 0;
result = UnsafeNetInfoNativeMethods.GetExtendedUdpTable(SafeLocalFree.Zero, ref size, true,
(uint)AddressFamily.InterNetworkV6,
UdpTableClass.UdpTableOwnerPid, 0);
while (result == IpHelperErrors.ErrorInsufficientBuffer)
{
try {
// Allocate the buffer and get the udptable
buffer = SafeLocalFree.LocalAlloc((int)size);
result = UnsafeNetInfoNativeMethods.GetExtendedUdpTable(buffer, ref size, true,
(uint)AddressFamily.InterNetworkV6,
UdpTableClass.UdpTableOwnerPid, 0);
if (result == IpHelperErrors.Success)
{
// The table info just gives us the number of rows.
IntPtr newPtr = buffer.DangerousGetHandle();
MibUdp6TableOwnerPid udp6TableOwnerPid
= (MibUdp6TableOwnerPid)Marshal.PtrToStructure(newPtr, typeof(MibUdp6TableOwnerPid));
if (udp6TableOwnerPid.numberOfEntries > 0)
{
// We need to skip over the tableinfo to get the inline rows
newPtr = (IntPtr)((long)newPtr + Marshal.SizeOf(udp6TableOwnerPid.numberOfEntries));
for (int i = 0; i < udp6TableOwnerPid.numberOfEntries; i++)
{
MibUdp6RowOwnerPid udp6RowOwnerPid
= (MibUdp6RowOwnerPid)Marshal.PtrToStructure(newPtr,
typeof(MibUdp6RowOwnerPid));
int localPort = udp6RowOwnerPid.localPort1 << 8 | udp6RowOwnerPid.localPort2;
udpListeners.Add(new IPEndPoint(new IPAddress(udp6RowOwnerPid.localAddr,
udp6RowOwnerPid.localScopeId), localPort));
// We increment the pointer to the next row
newPtr = (IntPtr)((long)newPtr + Marshal.SizeOf(udp6RowOwnerPid));
}
}
}
}
finally {
if (buffer != null)
{
buffer.Close();
}
}
}
// If we don't have any ipv6 interfaces detected, just continue
if (result != IpHelperErrors.Success && result != IpHelperErrors.ErrorNoData)
{
throw new NetworkInformationException((int)result);
}
}
return(udpListeners.ToArray());
}
internal static NetworkInterface[] GetNetworkInterfaces()
{
Contract.Ensures(Contract.Result <NetworkInterface[]>() != null);
AddressFamily family = AddressFamily.Unspecified;
uint bufferSize = 0;
SafeLocalFree buffer = null;
FixedInfo fixedInfo = SystemIPGlobalProperties.GetFixedInfo();
List <SystemNetworkInterface> interfaceList = new List <SystemNetworkInterface>();
GetAdaptersAddressesFlags flags =
GetAdaptersAddressesFlags.IncludeGateways
| GetAdaptersAddressesFlags.IncludeWins;
// Figure out the right buffer size for the adapter information
uint result = UnsafeNetInfoNativeMethods.GetAdaptersAddresses(
family, (uint)flags, IntPtr.Zero, SafeLocalFree.Zero, ref bufferSize);
while (result == IpHelperErrors.ErrorBufferOverflow)
{
try {
// Allocate the buffer and get the adapter info
buffer = SafeLocalFree.LocalAlloc((int)bufferSize);
result = UnsafeNetInfoNativeMethods.GetAdaptersAddresses(
family, (uint)flags, IntPtr.Zero, buffer, ref bufferSize);
// If succeeded, we're going to add each new interface
if (result == IpHelperErrors.Success)
{
// Linked list of interfaces
IntPtr ptr = buffer.DangerousGetHandle();
while (ptr != IntPtr.Zero)
{
// Traverse the list, marshal in the native structures, and create new NetworkInterfaces
IpAdapterAddresses adapterAddresses =
(IpAdapterAddresses)Marshal.PtrToStructure(ptr, typeof(IpAdapterAddresses));
interfaceList.Add(new SystemNetworkInterface(fixedInfo, adapterAddresses));
ptr = adapterAddresses.next;
}
}
}
finally {
if (buffer != null)
{
buffer.Close();
}
buffer = null;
}
}
// if we don't have any interfaces detected, return empty.
if (result == IpHelperErrors.ErrorNoData || result == IpHelperErrors.ErrorInvalidParameter)
{
return(new SystemNetworkInterface[0]);
}
// Otherwise we throw on an error
if (result != IpHelperErrors.Success)
{
throw new NetworkInformationException((int)result);
}
return(interfaceList.ToArray());
}
// internal method responsible for sending echo request on win2k and higher
private PingReply InternalSend(IPAddress address, byte[] buffer, int timeout, PingOptions options, bool async)
{
ipv6 = (address.AddressFamily == AddressFamily.InterNetworkV6)?true:false;
sendSize = buffer.Length;
//get and cache correct handle
if (!ipv6 && handlePingV4 == null)
{
handlePingV4 = UnsafeNetInfoNativeMethods.IcmpCreateFile();
if (handlePingV4.IsInvalid)
{
handlePingV4 = null;
throw new Win32Exception(); // Gets last error
}
}
else if (ipv6 && handlePingV6 == null)
{
handlePingV6 = UnsafeNetInfoNativeMethods.Icmp6CreateFile();
if (handlePingV6.IsInvalid)
{
handlePingV6 = null;
throw new Win32Exception(); // Gets last error
}
}
//setup the options
IPOptions ipOptions = new IPOptions(options);
//setup the reply buffer
if (replyBuffer == null)
{
replyBuffer = SafeLocalFree.LocalAlloc(MaxUdpPacket);
}
//queue the event
int error;
try
{
if (async)
{
if (pingEvent == null)
{
pingEvent = new ManualResetEvent(false);
}
else
{
pingEvent.Reset();
}
registeredWait = ThreadPool.RegisterWaitForSingleObject(pingEvent, new WaitOrTimerCallback(PingCallback), this, -1, true);
}
//Copy user dfata into the native world
SetUnmanagedStructures(buffer);
if (!ipv6)
{
if (async)
{
error = (int)UnsafeNetInfoNativeMethods.IcmpSendEcho2(handlePingV4, pingEvent.SafeWaitHandle, IntPtr.Zero, IntPtr.Zero, (uint)address.m_Address, requestBuffer, (ushort)buffer.Length, ref ipOptions, replyBuffer, MaxUdpPacket, (uint)timeout);
}
else
{
error = (int)UnsafeNetInfoNativeMethods.IcmpSendEcho2(handlePingV4, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, (uint)address.m_Address, requestBuffer, (ushort)buffer.Length, ref ipOptions, replyBuffer, MaxUdpPacket, (uint)timeout);
}
}
else
{
IPEndPoint ep = new IPEndPoint(address, 0);
SocketAddress remoteAddr = ep.Serialize();
byte[] sourceAddr = new byte[28];
if (async)
{
error = (int)UnsafeNetInfoNativeMethods.Icmp6SendEcho2(handlePingV6, pingEvent.SafeWaitHandle, IntPtr.Zero, IntPtr.Zero, sourceAddr, remoteAddr.m_Buffer, requestBuffer, (ushort)buffer.Length, ref ipOptions, replyBuffer, MaxUdpPacket, (uint)timeout);
}
else
{
error = (int)UnsafeNetInfoNativeMethods.Icmp6SendEcho2(handlePingV6, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, sourceAddr, remoteAddr.m_Buffer, requestBuffer, (ushort)buffer.Length, ref ipOptions, replyBuffer, MaxUdpPacket, (uint)timeout);
}
}
}
catch
{
UnregisterWaitHandle();
throw;
}
//need this if something is bogus.
if (error == 0)
{
error = (int)Marshal.GetLastWin32Error();
// Only skip Async IO Pending error value
if (async && error == UnsafeNclNativeMethods.ErrorCodes.ERROR_IO_PENDING)
{
return(null); // Expected async return value
}
// Cleanup
FreeUnmanagedStructures();
UnregisterWaitHandle();
if (async || // No IPStatus async errors
error < (int)IPStatus.DestinationNetworkUnreachable || // Min
error > (int)IPStatus.DestinationScopeMismatch) // Max // Out of IPStatus range
{
throw new Win32Exception(error);
}
return(new PingReply((IPStatus)error)); // Synchronous IPStatus errors
}
if (async)
{
return(null);
}
FreeUnmanagedStructures();
//return the reply
PingReply reply;
if (ipv6)
{
Icmp6EchoReply icmp6Reply = (Icmp6EchoReply)Marshal.PtrToStructure(replyBuffer.DangerousGetHandle(), typeof(Icmp6EchoReply));
reply = new PingReply(icmp6Reply, replyBuffer.DangerousGetHandle(), sendSize);
}
else
{
IcmpEchoReply icmpReply = (IcmpEchoReply)Marshal.PtrToStructure(replyBuffer.DangerousGetHandle(), typeof(IcmpEchoReply));
reply = new PingReply(icmpReply);
}
// IcmpEchoReply still has an unsafe IntPtr reference into replybuffer
// and replybuffer was being freed prematurely by the GC, causing AccessViolationExceptions.
GC.KeepAlive(replyBuffer);
return(reply);
}
internal extern static uint GetExtendedUdpTable(SafeLocalFree pUdpTable, ref uint dwOutBufLen, bool order,
uint IPVersion, UdpTableClass tableClass, uint reserved);
private List <SystemTcpConnectionInformation> GetAllTcpConnections()
{
uint dwOutBufLen = 0;
uint num2 = 0;
SafeLocalFree pTcpTable = null;
List <SystemTcpConnectionInformation> list = new List <SystemTcpConnectionInformation>();
if (Socket.OSSupportsIPv4)
{
num2 = UnsafeNetInfoNativeMethods.GetTcpTable(SafeLocalFree.Zero, ref dwOutBufLen, true);
while (num2 == 0x7a)
{
try
{
pTcpTable = SafeLocalFree.LocalAlloc((int)dwOutBufLen);
num2 = UnsafeNetInfoNativeMethods.GetTcpTable(pTcpTable, ref dwOutBufLen, true);
if (num2 == 0)
{
IntPtr handle = pTcpTable.DangerousGetHandle();
MibTcpTable table = (MibTcpTable)Marshal.PtrToStructure(handle, typeof(MibTcpTable));
if (table.numberOfEntries > 0)
{
handle = (IntPtr)(((long)handle) + Marshal.SizeOf(table.numberOfEntries));
for (int i = 0; i < table.numberOfEntries; i++)
{
MibTcpRow row = (MibTcpRow)Marshal.PtrToStructure(handle, typeof(MibTcpRow));
list.Add(new SystemTcpConnectionInformation(row));
handle = (IntPtr)(((long)handle) + Marshal.SizeOf(row));
}
}
}
continue;
}
finally
{
if (pTcpTable != null)
{
pTcpTable.Close();
}
}
}
if ((num2 != 0) && (num2 != 0xe8))
{
throw new NetworkInformationException((int)num2);
}
}
if (Socket.OSSupportsIPv6)
{
dwOutBufLen = 0;
num2 = UnsafeNetInfoNativeMethods.GetExtendedTcpTable(SafeLocalFree.Zero, ref dwOutBufLen, true, 0x17, TcpTableClass.TcpTableOwnerPidAll, 0);
while (num2 == 0x7a)
{
try
{
pTcpTable = SafeLocalFree.LocalAlloc((int)dwOutBufLen);
num2 = UnsafeNetInfoNativeMethods.GetExtendedTcpTable(pTcpTable, ref dwOutBufLen, true, 0x17, TcpTableClass.TcpTableOwnerPidAll, 0);
if (num2 == 0)
{
IntPtr ptr = pTcpTable.DangerousGetHandle();
MibTcp6TableOwnerPid pid = (MibTcp6TableOwnerPid)Marshal.PtrToStructure(ptr, typeof(MibTcp6TableOwnerPid));
if (pid.numberOfEntries > 0)
{
ptr = (IntPtr)(((long)ptr) + Marshal.SizeOf(pid.numberOfEntries));
for (int j = 0; j < pid.numberOfEntries; j++)
{
MibTcp6RowOwnerPid pid2 = (MibTcp6RowOwnerPid)Marshal.PtrToStructure(ptr, typeof(MibTcp6RowOwnerPid));
list.Add(new SystemTcpConnectionInformation(pid2));
ptr = (IntPtr)(((long)ptr) + Marshal.SizeOf(pid2));
}
}
}
continue;
}
finally
{
if (pTcpTable != null)
{
pTcpTable.Close();
}
}
}
if ((num2 != 0) && (num2 != 0xe8))
{
throw new NetworkInformationException((int)num2);
}
}
return(list);
}
public override IPEndPoint[] GetActiveUdpListeners()
{
uint dwOutBufLen = 0;
uint num2 = 0;
SafeLocalFree pUdpTable = null;
List <IPEndPoint> list = new List <IPEndPoint>();
if (Socket.OSSupportsIPv4)
{
num2 = UnsafeNetInfoNativeMethods.GetUdpTable(SafeLocalFree.Zero, ref dwOutBufLen, true);
while (num2 == 0x7a)
{
try
{
pUdpTable = SafeLocalFree.LocalAlloc((int)dwOutBufLen);
num2 = UnsafeNetInfoNativeMethods.GetUdpTable(pUdpTable, ref dwOutBufLen, true);
if (num2 == 0)
{
IntPtr handle = pUdpTable.DangerousGetHandle();
MibUdpTable table = (MibUdpTable)Marshal.PtrToStructure(handle, typeof(MibUdpTable));
if (table.numberOfEntries > 0)
{
handle = (IntPtr)(((long)handle) + Marshal.SizeOf(table.numberOfEntries));
for (int i = 0; i < table.numberOfEntries; i++)
{
MibUdpRow structure = (MibUdpRow)Marshal.PtrToStructure(handle, typeof(MibUdpRow));
int port = (structure.localPort1 << 8) | structure.localPort2;
list.Add(new IPEndPoint((long)structure.localAddr, port));
handle = (IntPtr)(((long)handle) + Marshal.SizeOf(structure));
}
}
}
continue;
}
finally
{
if (pUdpTable != null)
{
pUdpTable.Close();
}
}
}
if ((num2 != 0) && (num2 != 0xe8))
{
throw new NetworkInformationException((int)num2);
}
}
if (Socket.OSSupportsIPv6)
{
dwOutBufLen = 0;
num2 = UnsafeNetInfoNativeMethods.GetExtendedUdpTable(SafeLocalFree.Zero, ref dwOutBufLen, true, 0x17, UdpTableClass.UdpTableOwnerPid, 0);
while (num2 == 0x7a)
{
try
{
pUdpTable = SafeLocalFree.LocalAlloc((int)dwOutBufLen);
num2 = UnsafeNetInfoNativeMethods.GetExtendedUdpTable(pUdpTable, ref dwOutBufLen, true, 0x17, UdpTableClass.UdpTableOwnerPid, 0);
if (num2 == 0)
{
IntPtr ptr = pUdpTable.DangerousGetHandle();
MibUdp6TableOwnerPid pid = (MibUdp6TableOwnerPid)Marshal.PtrToStructure(ptr, typeof(MibUdp6TableOwnerPid));
if (pid.numberOfEntries > 0)
{
ptr = (IntPtr)(((long)ptr) + Marshal.SizeOf(pid.numberOfEntries));
for (int j = 0; j < pid.numberOfEntries; j++)
{
MibUdp6RowOwnerPid pid2 = (MibUdp6RowOwnerPid)Marshal.PtrToStructure(ptr, typeof(MibUdp6RowOwnerPid));
int num6 = (pid2.localPort1 << 8) | pid2.localPort2;
list.Add(new IPEndPoint(new IPAddress(pid2.localAddr, (long)pid2.localScopeId), num6));
ptr = (IntPtr)(((long)ptr) + Marshal.SizeOf(pid2));
}
}
}
continue;
}
finally
{
if (pUdpTable != null)
{
pUdpTable.Close();
}
}
}
if ((num2 != 0) && (num2 != 0xe8))
{
throw new NetworkInformationException((int)num2);
}
}
return(list.ToArray());
}
internal extern static uint Icmp6SendEcho2(SafeCloseIcmpHandle icmpHandle, IntPtr Event, IntPtr apcRoutine, IntPtr apcContext,
byte[] sourceSocketAddress, byte[] destSocketAddress, [In] SafeLocalFree data, ushort dataSize, ref IPOptions options, SafeLocalFree replyBuffer, uint replySize, uint timeout);
internal extern static uint GetPerAdapterInfo(uint IfIndex, SafeLocalFree pPerAdapterInfo, ref uint pOutBufLen);
internal extern static uint GetNetworkParams(SafeLocalFree pFixedInfo, ref uint pOutBufLen);
internal static extern uint GetAdaptersInfo(SafeLocalFree pAdapterInfo, ref uint pOutBufLen);
/// <summary>
/// Gets the active tcp connections. Uses the native GetTcpTable api.</summary>
private List <SystemTcpConnectionInformation> GetAllTcpConnections()
{
uint size = 0;
uint result = 0;
SafeLocalFree buffer = null;
List <SystemTcpConnectionInformation> tcpConnections = new List <SystemTcpConnectionInformation>();
// Check if it supports IPv4 for IPv6 only modes.
if (Socket.OSSupportsIPv4)
{
// Get the size of buffer needed
result = UnsafeNetInfoNativeMethods.GetTcpTable(SafeLocalFree.Zero, ref size, true);
while (result == IpHelperErrors.ErrorInsufficientBuffer)
{
try {
//allocate the buffer and get the tcptable
buffer = SafeLocalFree.LocalAlloc((int)size);
result = UnsafeNetInfoNativeMethods.GetTcpTable(buffer, ref size, true);
if (result == IpHelperErrors.Success)
{
//the table info just gives us the number of rows.
IntPtr newPtr = buffer.DangerousGetHandle();
MibTcpTable tcpTableInfo = (MibTcpTable)Marshal.PtrToStructure(newPtr, typeof(MibTcpTable));
if (tcpTableInfo.numberOfEntries > 0)
{
//we need to skip over the tableinfo to get the inline rows
newPtr = (IntPtr)((long)newPtr + Marshal.SizeOf(tcpTableInfo.numberOfEntries));
for (int i = 0; i < tcpTableInfo.numberOfEntries; i++)
{
MibTcpRow tcpRow = (MibTcpRow)Marshal.PtrToStructure(newPtr, typeof(MibTcpRow));
tcpConnections.Add(new SystemTcpConnectionInformation(tcpRow));
//we increment the pointer to the next row
newPtr = (IntPtr)((long)newPtr + Marshal.SizeOf(tcpRow));
}
}
}
}
finally {
if (buffer != null)
{
buffer.Close();
}
}
}
// if we don't have any ipv4 interfaces detected, just continue
if (result != IpHelperErrors.Success && result != IpHelperErrors.ErrorNoData)
{
throw new NetworkInformationException((int)result);
}
}
if (Socket.OSSupportsIPv6)
{
// IPv6 tcp connections
// Get the size of buffer needed
size = 0;
result = UnsafeNetInfoNativeMethods.GetExtendedTcpTable(SafeLocalFree.Zero, ref size, true,
(uint)AddressFamily.InterNetworkV6,
TcpTableClass.TcpTableOwnerPidAll, 0);
while (result == IpHelperErrors.ErrorInsufficientBuffer)
{
try {
// Allocate the buffer and get the tcptable
buffer = SafeLocalFree.LocalAlloc((int)size);
result = UnsafeNetInfoNativeMethods.GetExtendedTcpTable(buffer, ref size, true,
(uint)AddressFamily.InterNetworkV6,
TcpTableClass.TcpTableOwnerPidAll, 0);
if (result == IpHelperErrors.Success)
{
// The table info just gives us the number of rows.
IntPtr newPtr = buffer.DangerousGetHandle();
MibTcp6TableOwnerPid tcpTable6OwnerPid
= (MibTcp6TableOwnerPid)Marshal.PtrToStructure(newPtr, typeof(MibTcp6TableOwnerPid));
if (tcpTable6OwnerPid.numberOfEntries > 0)
{
// We need to skip over the tableinfo to get the inline rows
newPtr = (IntPtr)((long)newPtr + Marshal.SizeOf(tcpTable6OwnerPid.numberOfEntries));
for (int i = 0; i < tcpTable6OwnerPid.numberOfEntries; i++)
{
MibTcp6RowOwnerPid tcp6RowOwnerPid
= (MibTcp6RowOwnerPid)Marshal.PtrToStructure(newPtr,
typeof(MibTcp6RowOwnerPid));
tcpConnections.Add(new SystemTcpConnectionInformation(tcp6RowOwnerPid));
// We increment the pointer to the next row
newPtr = (IntPtr)((long)newPtr + Marshal.SizeOf(tcp6RowOwnerPid));
}
}
}
}
finally {
if (buffer != null)
{
buffer.Close();
}
}
}
// If we don't have any ipv6 interfaces detected, just continue
if (result != IpHelperErrors.Success && result != IpHelperErrors.ErrorNoData)
{
throw new NetworkInformationException((int)result);
}
}
return(tcpConnections);
}
internal static extern uint GetExtendedTcpTable(SafeLocalFree pTcpTable, ref uint dwOutBufLen, bool order, uint IPVersion, TcpTableClass tableClass, uint reserved);
internal extern static uint GetUdpTable(SafeLocalFree pUdpTable, ref uint dwOutBufLen, bool order);