/// <summary>
/// 获取指定IP的机器名
/// </summary>
/// <param name="address">一个System.Net.IPAddress</param>
/// <returns>机器名</returns>
public static string GetIPHostName(System.Net.IPAddress address)
{
try
{
System.Net.IPHostEntry iphe = Dns.GetHostByAddress(address.ToString());
return(iphe.HostName);
}
catch
{
return("<未知>");
}
}
public void GetHostByAddressString_Address_Null()
{
try {
Dns.GetHostByAddress((string)null);
Assert.Fail("#1");
} catch (ArgumentNullException ex) {
Assert.AreEqual(typeof(ArgumentNullException), ex.GetType(), "#2");
Assert.IsNull(ex.InnerException, "#3");
Assert.IsNotNull(ex.Message, "#4");
Assert.AreEqual("address", ex.ParamName, "#5");
}
}
public void DisplayHostAddress(String IpAddressString)
{
// Call 'GetHostByAddress(IPAddress)' method giving an 'IPAddress' object as argument.
// Obtain an 'IPHostEntry' instance, containing address information of the specified host.
// <Snippet1>
try
{
IPAddress hostIPAddress = IPAddress.Parse(IpAddressString);
IPHostEntry hostInfo = Dns.GetHostByAddress(hostIPAddress);
// Get the IP address list that resolves to the host names contained in
// the Alias property.
IPAddress[] address = hostInfo.AddressList;
// Get the alias names of the addresses in the IP address list.
String[] alias = hostInfo.Aliases;
Console.WriteLine("Host name : " + hostInfo.HostName);
Console.WriteLine("\nAliases :");
for (int index = 0; index < alias.Length; index++)
{
Console.WriteLine(alias[index]);
}
Console.WriteLine("\nIP address list : ");
for (int index = 0; index < address.Length; index++)
{
Console.WriteLine(address[index]);
}
}
catch (SocketException e)
{
Console.WriteLine("SocketException caught!!!");
Console.WriteLine("Source : " + e.Source);
Console.WriteLine("Message : " + e.Message);
}
catch (FormatException e)
{
Console.WriteLine("FormatException caught!!!");
Console.WriteLine("Source : " + e.Source);
Console.WriteLine("Message : " + e.Message);
}
catch (ArgumentNullException e)
{
Console.WriteLine("ArgumentNullException caught!!!");
Console.WriteLine("Source : " + e.Source);
Console.WriteLine("Message : " + e.Message);
}
catch (Exception e)
{
Console.WriteLine("Exception caught!!!");
Console.WriteLine("Source : " + e.Source);
Console.WriteLine("Message : " + e.Message);
}
// </Snippet1>
}
/// <summary>
/// 获取指定IP的机器名
/// </summary>
/// <param name="IPStr">表示IP地址的字符串</param>
/// <returns>机器名</returns>
public static string GetIPHostName(string IPStr)
{
try
{
System.Net.IPHostEntry iphe = Dns.GetHostByAddress(IPStr);
return(iphe.HostName);
}
catch
{
return("<未知>");
}
}
static void Main(string[] args)
{
IPHostEntry iphost = Dns.GetHostByAddress(IPAddress.Loopback);
Console.WriteLine("host name: " + iphost.HostName);
Console.WriteLine("Day IP: ");
foreach (IPAddress ip in iphost.AddressList)
{
Console.WriteLine(ip);
}
Console.ReadLine();
}
public static void Main(string[] argv)
{
IPAddress test = IPAddress.Parse("192.168.1.1");
IPHostEntry iphe = Dns.GetHostByAddress(test);
Console.WriteLine(iphe.HostName);
foreach (IPAddress address in iphe.AddressList)
{
Console.WriteLine("Address: {0}", address.ToString());
}
}
/// <summary>
/// Generate the instance id for a <see cref="IScheduler" />
/// </summary>
/// <returns>The clusterwide unique instance id.</returns>
public virtual string GenerateInstanceId()
{
try
{
return
(Dns.GetHostByAddress(Dns.GetHostByName(Dns.GetHostName()).AddressList[0].ToString()).HostName +
SystemTime.UtcNow().Ticks);
}
catch (Exception e)
{
throw new SchedulerException("Couldn't get host name!", e);
}
}
protected void Page_Load(object sender, EventArgs e)
{
string remoteAddress = "85.215.188.44";
bool trusted = false;
IPAddress hostIPAddress = IPAddress.Parse(remoteAddress);
IPHostEntry hostInfo = Dns.GetHostByAddress(hostIPAddress);
if (hostInfo.HostName.EndsWith("trustme.com"))
{
trusted = true;
}
}
static void Main(string[] args)
{
IPHostEntry iphost = Dns.GetHostByAddress(IPAddress.Loopback);
Console.WriteLine("host name: " + iphost.HostName);
Console.WriteLine("Day IP: ");
foreach (IPAddress ip in iphost.AddressList)
{
Console.WriteLine(ip);
}
Console.ReadLine();
//iuwegafiuasgfiuahseiufhaesfhaiuesfhaseiuf afhawerweah iurahwriu
}
public static string GetLocalIp()
{
System.Net.IPHostEntry ipEntry = Dns.GetHostByAddress(Environment.MachineName);
foreach (System.Net.IPAddress ip in ipEntry.AddressList)
{
if (System.Net.IPAddress.IsLoopback(ip) == false)
{
return(ip.ToString());
}
}
return(System.Net.IPAddress.Loopback.ToString());
}
/// <summary>
/// 機器登録
/// </summary>
/// <param name="packet">受信ARPパケット</param>
private void DeviceRegister(Packet packet)
{
// イーサネットタイプがARP以外は破棄
if (packet.Ethernet.EtherType != EthernetType.Arp)
{
return;
}
var arp = packet.Ethernet.Arp;
lock (this.lockObj) {
// 送信元MACアドレスが登録済みの場合は破棄
if (this.Devices.Any(x => x.MacAddress.SequenceEqual(arp.SenderHardwareAddress.ToArray())))
{
return;
}
this.Devices.Add(new Device()
{
IPAddress = new CalculatableIPAddress(arp.SenderProtocolAddress.ToArray()),
MacAddress = arp.SenderHardwareAddress.ToArray()
});
// 時間のかかるベンダ検索、ホスト名逆引き処理をTask化
this.taskList.Add(
Task.Run(() => {
using (var dataContext = new VendorDbContext(this._vendorDbPath)) {
foreach (var device in this.Devices)
{
var vendorId = string.Join("", device.MacAddress.Take(3).Select(m => $"{m:X2}"));
device.Vendor = dataContext.Vendors.FirstOrDefault(x => x.Assignment == vendorId);
try {
#pragma warning disable CS0618 // 型またはメンバーが古い形式です
// Dns.GetHostEntryは正引き出来ないと失敗となるためDns.GetHostByAddressを使用する。
device.HostName = (Dns.GetHostByAddress(device.IPAddress)).HostName;
#pragma warning restore CS0618 // 型またはメンバーが古い形式です
} catch (SocketException) {
}
}
}
})
);
// 完了済みの削除
this.taskList.RemoveAll(task =>
task.Status == TaskStatus.RanToCompletion ||
task.Status == TaskStatus.Canceled ||
task.Status == TaskStatus.Faulted);
}
}
/// <summary>
/// </summary>
/// <returns></returns>
public static string GetClientHost()
{
try
{
var address = IPAddress.Parse(GetClientIp());
var ipInfor = Dns.GetHostByAddress(address);
return(ipInfor.HostName);
}
catch (Exception ex)
{
//LogWriter.WriteLog(FolderName.Error, ex.Message);
return("");
}
}
/// <summary>
/// 枚举本地OPC服务器
/// </summary>
public string[] GetLocalServer()
{
List <string> list = new List <string>();
string strHostIP = "";
string strHostName = "";
//获取本地计算机IP,计算机名称
IPHostEntry IPHost = Dns.Resolve(Environment.MachineName);
if (IPHost.AddressList.Length > 0)
{
strHostIP = IPHost.AddressList[0].ToString();
}
else
{
return(list.ToArray());
}
//通过IP来获取计算机名称，可用在局域网内
IPHostEntry ipHostEntry = Dns.GetHostByAddress(strHostIP);
strHostName = ipHostEntry.HostName.ToString();
Console.WriteLine("HostName is: " + strHostName);
//获取本地计算机上的OPCServerName
try
{
OPCServer OpcServer = new OPCServer();
object result = OpcServer.GetOPCServers(strHostName);
if (result != null && result is Array)
{
Array servers = result as Array;
foreach (string s in servers)
{
list.Add(s);
}
}
}
catch (Exception err)
{
Console.WriteLine("枚举本地OPC服务器出错：" + err.Message);
//MessageBox.Show("枚举本地OPC服务器出错："+err.Message,"提示信息",MessageBoxButtons.OK,MessageBoxIcon.Warning);
}
return(list.ToArray());
}
public void StartDaemon()
{
string remoteAddr = Client.RemoteEndPoint.ToString();
remoteAddr = remoteAddr.Substring(0, remoteAddr.IndexOf(':'));
string remoteHost = Dns.GetHostByAddress(IPAddress.Parse(remoteAddr)).HostName;
ClientInfo.Options.remoteAddr = remoteAddr;
ClientInfo.Options.remoteHost = remoteHost;
Daemon.StartDaemon(ClientInfo);
Client.Close();
ClientSockets.Remove(this);
}
/// <summary>
/// Start listening for a local application to connected to saved EndPoint
/// </summary>
private void StartListener()
{
// Confirm supplied address is local to this computer
var ipAddress = ((IPEndPoint)_listenerEP).Address;
if (Dns.GetHostByAddress(ipAddress).HostName != Dns.GetHostByAddress("127.0.0.1").HostName)
{
SendNotification(this, new ProxyMessage {
Message = $"Supplied Listener Address: {ipAddress.ToString()} is not local to this computer", Severity = 1
});
return;
}
_listener.Listen(_listenerEP);
}
/// <summary>
/// Generate the instance id for a <see cref="IScheduler"/>
/// </summary>
/// <returns>The clusterwide unique instance id.</returns>
public virtual string GenerateInstanceId()
{
try
{
#if NET_20
return(Dns.GetHostName());
#else
return
(Dns.GetHostByAddress(Dns.GetHostByName(Dns.GetHostName()).AddressList[0].ToString()).HostName);
#endif
}
catch (Exception e)
{
throw new SchedulerException("Couldn't get host name!", e);
}
}
public override void Bad()
{
switch (7)
{
case 7:
IPAddress hostIPAddress = IPAddress.Parse("8.8.8.8");
/* FLAW: Use of deprecated Dns.GetHostByAddress() method */
IPHostEntry hostInfo = Dns.GetHostByAddress(hostIPAddress);
IO.WriteLine("Host name : " + hostInfo.HostName);
break;
default:
/* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
IO.WriteLine("Benign, fixed string");
break;
}
}
public void HandleIncome(int port)
{
bool done = false;
listener = new UdpClient(port);
IPEndPoint groupEP = new IPEndPoint(IPAddress.Any, port);
try
{
while (!done)
{
byte[] bytes = listener.Receive(ref groupEP);
if (System.Text.Encoding.UTF8.GetString(bytes).Equals(msg_check))
{
SendContent(groupEP.Address.ToString(), msg_check_back);
}
if (System.Text.Encoding.UTF8.GetString(bytes).Equals(msg_check_back))
{
string machineName = null;
string host = groupEP.Address.ToString();
try
{
machineName = Dns.GetHostByAddress(host).HostName;
}
catch (Exception ex)
{
machineName = "";
}
this.Invoke((MethodInvoker)(() => listBox_users.Items.Add(host + " " + machineName)));
//Console.WriteLine("Connected to the client {0}, {1}", groupEP, Encoding.ASCII.GetString(bytes));
//SendContent(host, msg_check);
//this.Invoke((MethodInvoker)(() => listBox_users.Items.Add(host + " " + machineName)));
}
}
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
finally
{
listener.Close();
}
}
public override void Bad()
{
if (IO.StaticReturnsTrueOrFalse())
{
IPAddress hostIPAddress = IPAddress.Parse("8.8.8.8");
/* FLAW: Use of deprecated Dns.GetHostByAddress() method */
IPHostEntry hostInfo = Dns.GetHostByAddress(hostIPAddress);
IO.WriteLine("Host name : " + hostInfo.HostName);
}
else
{
IPAddress hostIPAddress = IPAddress.Parse("8.8.8.8");
/* FIX: Use preferred Dns.GetHostEntry() method */
IPHostEntry hostInfo = Dns.GetHostEntry(hostIPAddress);
IO.WriteLine("Host name : " + hostInfo.HostName);
}
}
private string GetPCName(string _IP)
{
string _PCName = "NA";
try
{
IPHostEntry ip = Dns.GetHostByAddress(_IP);
_PCName = ip.HostName.ToString();
}
catch (Exception a)
{
return(_PCName);
// _PCName = "NA";
}
return(_PCName);
}
private void dNSForIPToolStripMenuItem_Click(object sender, EventArgs e)
{
string Ipv4 = "";
InputBox("Resolve", "Enter IPV4 address", ref Ipv4);
LB.Items.Add("Looking up " + Ipv4);
try
{
IPHostEntry host = Dns.GetHostByAddress(Ipv4);
LB.Items.Add(host.HostName);
}
catch (Exception em)
{
LB.Items.Add(em.Message);
}
}
private void btLangNghe_Click(object sender, EventArgs e)
{
// Khai bao cac thanh phan de ket noi
IPHostEntry host = Dns.GetHostByAddress("127.0.0.1");
IPAddress ip = host.AddressList[0];
IPEndPoint ep = new IPEndPoint(ip, 12000);
byte[] boDem = new byte[1024];
// Lang nghe cac ket noi den
Socket server = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
try
{
server.Bind(ep);
server.Listen(10);
String data = "";
while (true)
{
// Neu co ket noi den thi nhan du lieu va phan hoi
Socket client = server.Accept();
while (true)
{
int byteNhan = client.Receive(boDem);
data += Encoding.UTF8.GetString(boDem).Trim();
if (data.ToLower().Contains("<eof>"))
{
break;
}
}
String duongDan = Application.StartupPath + "\\..\\..\\log.txt";
using (StreamWriter sw = new StreamWriter(duongDan, true, Encoding.UTF8))
{
sw.WriteLine(DateTime.Now + ":" + data.Trim());
}
client.Send(Encoding.UTF8.GetBytes("Da nhan"));
client.Shutdown(SocketShutdown.Both);
client.Close();
}
}
catch { }
}
public static string GetHostName(string ipAddress)
{
string hostName = string.Empty;
try
{
IPAddress hostIPAddress = IPAddress.Parse(ipAddress);
IPHostEntry hostInfo = Dns.GetHostByAddress(hostIPAddress);
IPAddress[] address = hostInfo.AddressList;
String[] alias = hostInfo.Aliases; // In case I want to do something with this later
hostName = ("Host name : " + hostInfo.HostName);
}
catch (SocketException e)
{
Logger.Warn(ipAddress);
Logger.Warn("SocketException");
Logger.Warn("Source : " + e.Source);
Logger.Warn("Message : " + e.Message);
}
catch (FormatException e)
{
Logger.Warn(ipAddress);
Logger.Warn("FormatException");
Logger.Warn("Source : " + e.Source);
Logger.Warn("Message : " + e.Message);
}
catch (ArgumentNullException e)
{
Logger.Warn(ipAddress);
Logger.Warn("ArgumentNullException");
Logger.Warn("Source : " + e.Source);
Logger.Warn("Message : " + e.Message);
}
catch (Exception e)
{
Logger.Warn(ipAddress);
Logger.Warn("Exception");
Logger.Warn("Source : " + e.Source);
Logger.Warn("Message : " + e.Message);
}
return(hostName);
}
private void AutoDnsButton_Click(object sender, EventArgs e)
{
foreach (DataGridViewRow row in AliasGridView.SelectedRows)
{
try
{
row.AccessibilityObject.GetChild(2).Value =
Dns.GetHostByAddress(IPAddress.Parse(
row.AccessibilityObject.GetChild(1).Value)).HostName;
AliasGridView.Update();
}
catch
{
row.AccessibilityObject.GetChild(1).Value = "!!!" +
row.AccessibilityObject.GetChild(1).Value;
}
}
}
private static void StartClient()
{
// Connect to a remote device.
try
{
// Establish the remote endpoint for the socket.
// The name of the
// remote device is "host.contoso.com".
//IPHostEntry ipHostInfo = Dns.GetHostEntry("host.contoso.com");
IPHostEntry ipHostInfo = Dns.GetHostByAddress("127.0.0.1");
//IPAddress ipAddress = ipHostInfo.AddressList[0];
IPAddress ipAddress = ipHostInfo.AddressList[0];
IPEndPoint remoteEP = new IPEndPoint(ipAddress, port);
// Create a TCP/IP socket.
Socket client = new Socket(ipAddress.AddressFamily,
SocketType.Stream, ProtocolType.Tcp);
// Connect to the remote endpoint.
client.BeginConnect(remoteEP,
new AsyncCallback(ConnectCallback), client);
connectDone.WaitOne();
// Send test data to the remote device.
Send(client, "This is a test<EOF>");
sendDone.WaitOne();
// Receive the response from the remote device.
Receive(client);
//receiveDone.WaitOne();
// Write the response to the console.
Console.WriteLine("Response received : {0}", response);
// Release the socket.
client.Shutdown(SocketShutdown.Both);
client.Close();
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
}
/// <summary>
/// 枚举本地OPC服务器
/// </summary>
private void GetLocalServer()
{
//OpcClient opc = new DaOpc();
//List<DaOpcItem> s = new List<DaOpcItem>();
//opc.GetItemValues(s);
//获取本地计算机IP,计算机名称
IPHostEntry IPHost = Dns.Resolve(Environment.MachineName);
if (IPHost.AddressList.Length > 0)
{
strHostIP = IPHost.AddressList[0].ToString();
}
else
{
return;
}
//通过IP来获取计算机名称，可用在局域网内
IPHostEntry ipHostEntry = Dns.GetHostByAddress(strHostIP);
strHostName = ipHostEntry.HostName.ToString();
//获取本地计算机上的OPCServerName
try
{
KepServer = new OPCServer();
object serverList = KepServer.GetOPCServers(strHostName);
foreach (string turn in (Array)serverList)
{
cmbServerName.Items.Add(turn);
}
cmbServerName.SelectedIndex = 0;
btnConnServer.Enabled = true;
}
catch (Exception err)
{
MessageBox.Show("枚举本地OPC服务器出错：" + err.Message, "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
}
private void CheckByIpButtonClick(object sender, RoutedEventArgs e)
{
nameTextBox.Text = "";
if (nameTextBox.Text == "" && ipTextBox.Text != "")
{
try
{
IPHostEntry ipList = Dns.GetHostByAddress(ipTextBox.Text);
foreach (var a in ipList.HostName)
{
nameTextBox.Text += a.ToString();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
}
public override void Connect()
{
base.Connect();
m_ReadBuffer = null;
m_ReadBuffer = new byte[BUFFERSIZE];
m_SocksConnected = false;
//IPHostEntry ipHostInfo = Dns.Resolve(Address);
IPHostEntry ipHostInfo = Dns.GetHostByAddress(Address);
//Dns.GetHostEntry
IPAddress ipAddress = ipHostInfo.AddressList[0];// IPAddress.Parse(address);
//IPAddress ipAddress = IPAddress.Parse(Address);
IPEndPoint endPoint = new IPEndPoint(ipAddress, Port);
_socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
_socket.BeginConnect(endPoint, new AsyncCallback(EndConnect), null);
}
public void scan()
{
IPAddress myIP = IPAddress.Parse(ip);
try
{
IPHostEntry myHost = Dns.GetHostByAddress(myIP);
HostName = myHost.HostName.ToString();
}
catch
{
HostName = "";
}
if (HostName == "")
{
HostName = "主机没有响应";
}
if (ul != null)
{
ul(ip, HostName, BangName);
}
}
public static string GetName(string ip)
{
if (!DnsNames_.Contains(ip))
{
try
{
IPHostEntry tmp = Dns.GetHostByAddress(ip);
if (!DnsNames_.Contains(ip))
{
DnsNames_.Add(ip, tmp.HostName);
}
}
catch (Exception)
{
if (!DnsNames_.Contains(ip))
{
DnsNames_.Add(ip, ip);
}
}
}
return((string)DnsNames_[ip]);
}
