в 15:31, 26 мая 2010

2010-05-26T15:31:53Z

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2010-05-26T12:20:39Z

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==Dns Lookup==

<source lang="csharp">using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
class Program
{
static void Main(string[] args)
{
if (args.Length != 1)
{
Console.WriteLine("Usage: DnsLookup hostname/IP Adddress");
return;
}
IPHostEntry ipHostEntry = Dns.GetHostEntry(args[0]);
Console.WriteLine("Host: {0}", ipHostEntry.HostName);
if (ipHostEntry.Aliases.Length > 0)
{
Console.WriteLine("\nAliases:");
foreach (string alias in ipHostEntry.Aliases)
{
Console.WriteLine(alias);
}
}
Console.WriteLine("\nAddress(es):");
foreach (IPAddress address in ipHostEntry.AddressList)
{
Console.WriteLine("Address: {0}", address.ToString());
}
}
}</source>

==DNS Name and Its IPHostEntry==

<source lang="csharp">using System;
using System.Net;
class MainClass
{
public static void Main()
{
string hostName = Dns.GetHostName();
Console.WriteLine("Local hostname: {0}", hostName);
IPHostEntry myself = Dns.GetHostByName(hostName);
foreach (IPAddress address in myself.AddressList)
{
Console.WriteLine("IP Address: {0}", address.ToString());
}
}
}</source>
<pre class=codeResult>Local hostname: nfex
IP Address: 192.168.1.101</pre>

==Get Address List from HostEntry==

<source lang="csharp">using System;
using System.Net;
class MainClass
{
public static void Main(string[] args)
{
foreach (string comp in args)
{
try
{
IPAddress[] addresses = Dns.GetHostEntry(comp).AddressList;
foreach (IPAddress address in addresses)
{
Console.WriteLine("{0} = {1} ({2})",
comp, address, address.AddressFamily);
}
}
catch (Exception ex)
{
Console.WriteLine("{0} = Error ({1})", comp, ex.Message);
}
}
}
}</source>

==Get DNS host name==

<source lang="csharp">using System;
using System.Net;
class MainClass
{
public static void Main()
{

Console.WriteLine(Dns.GetHostName());
}
}</source>
<pre class=codeResult>nfex</pre>

==Get Host by IP address==

<source lang="csharp">using System;
using System.Net;
class MainClass
{
public static void Main(string[] argv)
{
IPAddress test = IPAddress.Parse("64.200.123.1");
IPHostEntry iphe = Dns.GetHostByAddress(test);
Console.WriteLine("Information for {0}", test.ToString());
Console.WriteLine("Host name: {0}", iphe.HostName);
}
}</source>
<pre class=codeResult>Information for 64.200.123.1
Host name: drvlga1wct1-atm1-0-0-12.wcg.net</pre>

==Get IP address from host name==

<source lang="csharp">using System;
using System.Net;
class MainClass
{
public static void Main()
{
IPHostEntry ihe = Dns.GetHostByName(Dns.GetHostName());
IPAddress myself = ihe.AddressList[0];
Console.WriteLine(myself);
}
}</source>
<pre class=codeResult>192.168.1.101</pre>

==Get IPAddress from IPHostEntry==

<source lang="csharp">using System;
using System.Net;
class MainClass
{
public static void Main(string[] argv)
{
IPAddress test = IPAddress.Parse("64.200.123.1");
IPHostEntry iphe = Dns.GetHostByAddress(test);
foreach(IPAddress address in iphe.AddressList)
{
Console.WriteLine("Address: {0}", address.ToString());
}
}
}</source>
<pre class=codeResult>Address: 64.200.123.1</pre>

==Get IPHostEntry by host name==

<source lang="csharp">using System;
using System.Net;
class MainClass
{
public static void Main(string[] argv)
{
IPHostEntry results = Dns.GetHostByName("www.nfex.ru");
Console.WriteLine("Host name: {0}",results.HostName);
foreach(string alias in results.Aliases)
{
Console.WriteLine("Alias: {0}", alias);
}
foreach(IPAddress address in results.AddressList)
{
Console.WriteLine("Address: {0}",
address.ToString());
}
}
}</source>
<pre class=codeResult>Host name: nfex.ru
Alias: www.nfex.ru
Address: 68.178.206.138</pre>

==Resolve a Host name==

<source lang="csharp">using System;
using System.Net;
class MainClass
{
public static void Main(string[] argv)
{
IPHostEntry iphe = Dns.Resolve("62.208.12.1");
Console.WriteLine("Host name: {0}", iphe.HostName);
foreach(string alias in iphe.Aliases)
{
Console.WriteLine("Alias: {0}", alias);
}
foreach(IPAddress address in iphe.AddressList)
{
Console.WriteLine("Address: {0}",
address.ToString());
}
}
}</source>
<pre class=codeResult>Host name: 62.208.12.1
Address: 62.208.12.1</pre>

==Use AsyncCallback event to resolve a host name==

<source lang="csharp">using System;
using System.Drawing;
using System.Net;
using System.Text;
using System.Windows.Forms;
class MainClass
{
private static void Resolved(IAsyncResult ar)
{
string buffer;
IPHostEntry iphe = Dns.EndResolve(ar);
buffer = "Host name: " + iphe.HostName;
Console.WriteLine(buffer);
foreach(string alias in iphe.Aliases)
{
buffer = "Alias: " + alias;
Console.WriteLine(buffer);
}
foreach(IPAddress addrs in iphe.AddressList)
{
buffer = "Address: " + addrs.ToString();
Console.WriteLine(buffer);
}
}
public static void Main()
{
AsyncCallback OnResolved;
OnResolved = new AsyncCallback(Resolved);
string addr = "www.nfex.ru";
Object state = new Object();
Dns.BeginResolve(addr, OnResolved, state);
}
}</source>

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Csharp/CSharp Tutorial/Network/DNS - История изменений

в 15:31, 26 мая 2010

Admin: 1 версия