/// <summary>根据字符串形式IP地址转为物理地址</summary>
/// <param name="addr"></param>
/// <returns></returns>
public static String IPToAddress(this String addr)
{
if (addr.IsNullOrEmpty())
{
return(null);
}
// 有可能是NetUri
var p = addr.IndexOf("://");
if (p >= 0)
{
addr = addr.Substring(p + 3);
}
// 过滤IPv4/IPv6端口
if (addr.Contains(":"))
{
addr = addr.Substring(0, addr.LastIndexOf(":"));
}
IPAddress ip = null;
if (!IPAddress.TryParse(addr, out ip))
{
return(null);
}
return(ip.GetAddress());
}
// Any exceptions that escape synchronously will be caught by the caller and wrapped in a PingException.
// We do not need to or want to capture such exceptions into the returned task.
private Task <PingReply> SendPingAsyncCore(IPAddress address, byte[] buffer, int timeout, PingOptions options)
{
var tcs = new TaskCompletionSource <PingReply>();
_taskCompletionSource = tcs;
_ipv6 = (address.AddressFamily == AddressFamily.InterNetworkV6);
_sendSize = buffer.Length;
// Get and cache correct handle.
if (!_ipv6 && _handlePingV4 == null)
{
_handlePingV4 = Interop.IpHlpApi.IcmpCreateFile();
if (_handlePingV4.IsInvalid)
{
_handlePingV4 = null;
throw new Win32Exception(); // Gets last error.
}
}
else if (_ipv6 && _handlePingV6 == null)
{
_handlePingV6 = Interop.IpHlpApi.Icmp6CreateFile();
if (_handlePingV6.IsInvalid)
{
_handlePingV6 = null;
throw new Win32Exception(); // Gets last error.
}
}
var ipOptions = new Interop.IpHlpApi.IPOptions(options);
if (_replyBuffer == null)
{
_replyBuffer = SafeLocalAllocHandle.LocalAlloc(MaxUdpPacket);
}
// Queue the event.
int error;
try
{
if (_pingEvent == null)
{
_pingEvent = new ManualResetEvent(false);
}
else
{
_pingEvent.Reset();
}
_registeredWait = ThreadPool.RegisterWaitForSingleObject(_pingEvent, (state, _) => ((Ping)state).PingCallback(), this, -1, true);
SetUnmanagedStructures(buffer);
if (!_ipv6)
{
SafeWaitHandle pingEventSafeWaitHandle = _pingEvent.GetSafeWaitHandle();
error = (int)Interop.IpHlpApi.IcmpSendEcho2(
_handlePingV4,
pingEventSafeWaitHandle,
IntPtr.Zero,
IntPtr.Zero,
(uint)address.GetAddress(),
_requestBuffer,
(ushort)buffer.Length,
ref ipOptions,
_replyBuffer,
MaxUdpPacket,
(uint)timeout);
}
else
{
IPEndPoint ep = new IPEndPoint(address, 0);
SystemNet.Internals.SocketAddress remoteAddr = IPEndPointExtensions.Serialize(ep);
byte[] sourceAddr = new byte[28];
SafeWaitHandle pingEventSafeWaitHandle = _pingEvent.GetSafeWaitHandle();
error = (int)Interop.IpHlpApi.Icmp6SendEcho2(
_handlePingV6,
pingEventSafeWaitHandle,
IntPtr.Zero,
IntPtr.Zero,
sourceAddr,
remoteAddr.Buffer,
_requestBuffer,
(ushort)buffer.Length,
ref ipOptions,
_replyBuffer,
MaxUdpPacket,
(uint)timeout);
}
}
catch
{
UnregisterWaitHandle();
throw;
}
if (error == 0)
{
error = Marshal.GetLastWin32Error();
// Only skip Async IO Pending error value.
if (error != Interop.IpHlpApi.ERROR_IO_PENDING)
{
// Cleanup.
FreeUnmanagedStructures();
UnregisterWaitHandle();
throw new Win32Exception(error);
}
}
return(tcs.Task);
}
internal virtual NbtAddress[] GetHosts()
{
try
{
_waitResponse = false;
byte[] bAddrBytes = laddr.GetAddressBytes();
for (int i = 1; i <= 254; i++)
{
NodeStatusRequest request;
NodeStatusResponse response;
byte[] addrBytes =
{
bAddrBytes[0],
bAddrBytes[1],
bAddrBytes[2],
(byte)i
};
IPAddress addr = new IPAddress(addrBytes);
response = new NodeStatusResponse(new NbtAddress(NbtAddress.UnknownName,
addr.GetAddress(), false, 0x20));
request = new NodeStatusRequest(new Name(NbtAddress.AnyHostsName, unchecked (0x20), null));
request.Addr = addr;
Send(request, response, 0);
}
}
catch (IOException ioe)
{
if (_log.Level > 1)
{
Runtime.PrintStackTrace(ioe, _log);
}
throw new UnknownHostException(ioe);
}
_autoResetWaitReceive = new AutoResetEvent(false);
_thread = new Thread(this);
_thread.SetDaemon(true);
_thread.Start();
_autoResetWaitReceive.WaitOne();
List <NbtAddress> result = new List <NbtAddress>();
foreach (var key in _responseTable.Keys)
{
NodeStatusResponse resp = (NodeStatusResponse)_responseTable[key];
if (resp.Received && resp.ResultCode == 0)
{
foreach (var entry in resp.AddressArray)
{
if (entry.HostName.HexCode == 0x20)
{
result.Add(entry);
}
}
}
}
_responseTable.Clear();
_waitResponse = true;
return(result.Count > 0 ? result.ToArray() : null);
}
// Any exceptions that escape synchronously will be caught by the caller and wrapped in a PingException.
// We do not need to or want to capture such exceptions into the returned task.
private Task<PingReply> SendPingAsyncCore(IPAddress address, byte[] buffer, int timeout, PingOptions options)
{
var tcs = new TaskCompletionSource<PingReply>();
_taskCompletionSource = tcs;
_ipv6 = (address.AddressFamily == AddressFamily.InterNetworkV6);
_sendSize = buffer.Length;
// Get and cache correct handle.
if (!_ipv6 && _handlePingV4 == null)
{
_handlePingV4 = Interop.IpHlpApi.IcmpCreateFile();
if (_handlePingV4.IsInvalid)
{
_handlePingV4 = null;
throw new Win32Exception(); // Gets last error.
}
}
else if (_ipv6 && _handlePingV6 == null)
{
_handlePingV6 = Interop.IpHlpApi.Icmp6CreateFile();
if (_handlePingV6.IsInvalid)
{
_handlePingV6 = null;
throw new Win32Exception(); // Gets last error.
}
}
var ipOptions = new Interop.IpHlpApi.IPOptions(options);
if (_replyBuffer == null)
{
_replyBuffer = SafeLocalAllocHandle.LocalAlloc(MaxUdpPacket);
}
// Queue the event.
int error;
try
{
if (_pingEvent == null)
{
_pingEvent = new ManualResetEvent(false);
}
else
{
_pingEvent.Reset();
}
_registeredWait = ThreadPool.RegisterWaitForSingleObject(_pingEvent, (state, _) => ((Ping)state).PingCallback(), this, -1, true);
SetUnmanagedStructures(buffer);
if (!_ipv6)
{
SafeWaitHandle pingEventSafeWaitHandle = _pingEvent.GetSafeWaitHandle();
error = (int)Interop.IpHlpApi.IcmpSendEcho2(
_handlePingV4,
pingEventSafeWaitHandle,
IntPtr.Zero,
IntPtr.Zero,
(uint)address.GetAddress(),
_requestBuffer,
(ushort)buffer.Length,
ref ipOptions,
_replyBuffer,
MaxUdpPacket,
(uint)timeout);
}
else
{
IPEndPoint ep = new IPEndPoint(address, 0);
Internals.SocketAddress remoteAddr = IPEndPointExtensions.Serialize(ep);
byte[] sourceAddr = new byte[28];
SafeWaitHandle pingEventSafeWaitHandle = _pingEvent.GetSafeWaitHandle();
error = (int)Interop.IpHlpApi.Icmp6SendEcho2(
_handlePingV6,
pingEventSafeWaitHandle,
IntPtr.Zero,
IntPtr.Zero,
sourceAddr,
remoteAddr.Buffer,
_requestBuffer,
(ushort)buffer.Length,
ref ipOptions,
_replyBuffer,
MaxUdpPacket,
(uint)timeout);
}
}
catch
{
UnregisterWaitHandle();
throw;
}
if (error == 0)
{
error = Marshal.GetLastWin32Error();
// Only skip Async IO Pending error value.
if (error != Interop.IpHlpApi.ERROR_IO_PENDING)
{
// Cleanup.
FreeUnmanagedStructures();
UnregisterWaitHandle();
throw new Win32Exception(error);
}
}
return tcs.Task;
}
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 = Interop.IpHlpApi.IcmpCreateFile();
if (_handlePingV4.IsInvalid)
{
_handlePingV4 = null;
throw new Win32Exception(); // Gets last error.
}
}
else if (_ipv6 && _handlePingV6 == null)
{
_handlePingV6 = Interop.IpHlpApi.Icmp6CreateFile();
if (_handlePingV6.IsInvalid)
{
_handlePingV6 = null;
throw new Win32Exception(); // Gets last error.
}
}
var ipOptions = new Interop.IpHlpApi.IPOptions(options);
if (_replyBuffer == null)
{
_replyBuffer = SafeLocalAllocHandle.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);
}
SetUnmanagedStructures(buffer);
if (!_ipv6)
{
if (async)
{
SafeWaitHandle pingEventSafeWaitHandle = pingEvent.GetSafeWaitHandle();
error = (int)Interop.IpHlpApi.IcmpSendEcho2(
_handlePingV4,
pingEventSafeWaitHandle,
IntPtr.Zero,
IntPtr.Zero,
(uint)address.GetAddress(),
_requestBuffer,
(ushort)buffer.Length,
ref ipOptions,
_replyBuffer,
MaxUdpPacket,
(uint)timeout);
}
else
{
error = (int)Interop.IpHlpApi.IcmpSendEcho2(
_handlePingV4,
IntPtr.Zero,
IntPtr.Zero,
IntPtr.Zero,
(uint)address.GetAddress(),
_requestBuffer,
(ushort)buffer.Length,
ref ipOptions,
_replyBuffer,
MaxUdpPacket,
(uint)timeout);
}
}
else
{
IPEndPoint ep = new IPEndPoint(address, 0);
Internals.SocketAddress remoteAddr = IPEndPointExtensions.Serialize(ep);
byte[] sourceAddr = new byte[28];
if (async)
{
SafeWaitHandle pingEventSafeWaitHandle = pingEvent.GetSafeWaitHandle();
error = (int)Interop.IpHlpApi.Icmp6SendEcho2(
_handlePingV6,
pingEventSafeWaitHandle,
IntPtr.Zero,
IntPtr.Zero,
sourceAddr,
remoteAddr.Buffer,
_requestBuffer,
(ushort)buffer.Length,
ref ipOptions,
_replyBuffer,
MaxUdpPacket,
(uint)timeout);
}
else
{
error = (int)Interop.IpHlpApi.Icmp6SendEcho2(
_handlePingV6,
IntPtr.Zero,
IntPtr.Zero,
IntPtr.Zero,
sourceAddr,
remoteAddr.Buffer,
_requestBuffer,
(ushort)buffer.Length,
ref ipOptions,
_replyBuffer,
MaxUdpPacket,
(uint)timeout);
}
}
}
catch
{
UnregisterWaitHandle();
throw;
}
if (error == 0)
{
error = Marshal.GetLastWin32Error();
// Only skip Async IO Pending error value.
if (async && error == Interop.IpHlpApi.ERROR_IO_PENDING)
{
// Expected async return value.
return(null);
}
// Cleanup.
FreeUnmanagedStructures();
UnregisterWaitHandle();
if (async || // No IPStatus async errors.
error < (int)IPStatus.DestinationNetworkUnreachable || // Min
error > (int)IPStatus.DestinationScopeMismatch) // Max or Out of IPStatus range.
{
throw new Win32Exception(error);
}
return(new PingReply((IPStatus)error)); // Synchronous IPStatus errors.
}
if (async)
{
return(null);
}
FreeUnmanagedStructures();
PingReply reply;
if (_ipv6)
{
Interop.IpHlpApi.Icmp6EchoReply icmp6Reply = Marshal.PtrToStructure <Interop.IpHlpApi.Icmp6EchoReply>(_replyBuffer.DangerousGetHandle());
reply = new PingReply(icmp6Reply, _replyBuffer.DangerousGetHandle(), _sendSize);
}
else
{
Interop.IpHlpApi.IcmpEchoReply icmpReply = Marshal.PtrToStructure <Interop.IpHlpApi.IcmpEchoReply>(_replyBuffer.DangerousGetHandle());
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);
}
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 = Interop.IpHlpApi.IcmpCreateFile();
if (_handlePingV4.IsInvalid)
{
_handlePingV4 = null;
throw new Win32Exception(); // Gets last error.
}
}
else if (_ipv6 && _handlePingV6 == null)
{
_handlePingV6 = Interop.IpHlpApi.Icmp6CreateFile();
if (_handlePingV6.IsInvalid)
{
_handlePingV6 = null;
throw new Win32Exception(); // Gets last error.
}
}
var ipOptions = new Interop.IpHlpApi.IPOptions(options);
if (_replyBuffer == null)
{
_replyBuffer = SafeLocalAllocHandle.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);
}
SetUnmanagedStructures(buffer);
if (!_ipv6)
{
if (async)
{
SafeWaitHandle pingEventSafeWaitHandle = pingEvent.GetSafeWaitHandle();
error = (int)Interop.IpHlpApi.IcmpSendEcho2(
_handlePingV4,
pingEventSafeWaitHandle,
IntPtr.Zero,
IntPtr.Zero,
(uint)address.GetAddress(),
_requestBuffer,
(ushort)buffer.Length,
ref ipOptions,
_replyBuffer,
MaxUdpPacket,
(uint)timeout);
}
else
{
error = (int)Interop.IpHlpApi.IcmpSendEcho2(
_handlePingV4,
IntPtr.Zero,
IntPtr.Zero,
IntPtr.Zero,
(uint)address.GetAddress(),
_requestBuffer,
(ushort)buffer.Length,
ref ipOptions,
_replyBuffer,
MaxUdpPacket,
(uint)timeout);
}
}
else
{
IPEndPoint ep = new IPEndPoint(address, 0);
Internals.SocketAddress remoteAddr = IPEndPointExtensions.Serialize(ep);
byte[] sourceAddr = new byte[28];
if (async)
{
SafeWaitHandle pingEventSafeWaitHandle = pingEvent.GetSafeWaitHandle();
error = (int)Interop.IpHlpApi.Icmp6SendEcho2(
_handlePingV6,
pingEventSafeWaitHandle,
IntPtr.Zero,
IntPtr.Zero,
sourceAddr,
remoteAddr.Buffer,
_requestBuffer,
(ushort)buffer.Length,
ref ipOptions,
_replyBuffer,
MaxUdpPacket,
(uint)timeout);
}
else
{
error = (int)Interop.IpHlpApi.Icmp6SendEcho2(
_handlePingV6,
IntPtr.Zero,
IntPtr.Zero,
IntPtr.Zero,
sourceAddr,
remoteAddr.Buffer,
_requestBuffer,
(ushort)buffer.Length,
ref ipOptions,
_replyBuffer,
MaxUdpPacket,
(uint)timeout);
}
}
}
catch
{
UnregisterWaitHandle();
throw;
}
if (error == 0)
{
error = Marshal.GetLastWin32Error();
// Only skip Async IO Pending error value.
if (async && error == Interop.IpHlpApi.ERROR_IO_PENDING)
{
// Expected async return value.
return null;
}
// Cleanup.
FreeUnmanagedStructures();
UnregisterWaitHandle();
if (async // No IPStatus async errors.
|| error < (int)IPStatus.DestinationNetworkUnreachable // Min
|| error > (int)IPStatus.DestinationScopeMismatch) // Max or Out of IPStatus range.
{
throw new Win32Exception(error);
}
return new PingReply((IPStatus)error); // Synchronous IPStatus errors.
}
if (async)
{
return null;
}
FreeUnmanagedStructures();
PingReply reply;
if (_ipv6)
{
Interop.IpHlpApi.Icmp6EchoReply icmp6Reply = Marshal.PtrToStructure<Interop.IpHlpApi.Icmp6EchoReply>(_replyBuffer.DangerousGetHandle());
reply = new PingReply(icmp6Reply, _replyBuffer.DangerousGetHandle(), _sendSize);
}
else
{
Interop.IpHlpApi.IcmpEchoReply icmpReply = Marshal.PtrToStructure<Interop.IpHlpApi.IcmpEchoReply>(_replyBuffer.DangerousGetHandle());
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;
}