/* Here we simply tell the program what must happen when the button is clicked.
* Obviously in the following case, what happens is that when the button is clicked
* we invoke a method called "Dns.BeginResolve" which actually finished the real task started
* by the AsyncCallback delegate, which is to
* find the IP address of the website */
void ButtonResolveOnClick(object obj, EventArgs ea)
{
results.Items.Clear();
string addr = address.Text;
Object state = new Object();
Dns.BeginResolve(addr, OnResolved, state);
}
public void AsyncResolve()
{
IAsyncResult async = Dns.BeginResolve(site1Dot, null, null);
IPHostEntry entry = Dns.EndResolve(async);
SubTestValidIPHostEntry(entry);
CheckIPv4Address(entry, IPAddress.Parse(site1Dot));
}
// Determine the Internet Protocol (IP) addresses for
// this host asynchronously.
public void DoGetHostEntryAsync(string hostname, DnsLookupCallback callback)
{
GetHostEntryFinished.Reset();
ResolveState ioContext = new ResolveState(hostname, callback);
Dns.BeginResolve(ioContext.host,
new AsyncCallback(GetHostEntryCallback), ioContext);
}
private void btnResolve_Click(object sender, EventArgs e)
{
results.Items.Clear(); // xóa list view
string addr = address.Text; // lấy chuỗi địa chỉ được nhập vào
Object state = new Object(); // object trạng thái
Dns.BeginResolve(addr, OnResolved, state); // bắt đầu gửi yêu cầu không đồng bộ DNS đến địa chỉ được nhập vào
}
public static IPEndPoint GetIPEndPoint(string __ip, int __port)
{
// init vars
IPEndPoint ret = null;
IPHostEntry ipEntry;
// The IP Address Array. Holds an array of resolved Host Names.
IPAddress ipAddr;
if (__ip.ToLower().CompareTo("localhost") == 0 ||
__ip.ToLower().CompareTo("0.0.0.0") == 0)
{
__ip = IPHost();
}
// Value of alpha characters
char[] alpha = "aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ-".ToCharArray();
// If alpha characters exist we know we are doing a forward lookup
if (__ip.IndexOfAny(alpha) == -1)
{
ipEntry = Dns.GetHostByName(__ip);
if (ipEntry.AddressList.Length > 0)
{
ipAddr = ipEntry.AddressList[0];
if (__port < 0)
{
__port = 0;
}
ret = new IPEndPoint(ipAddr, __port);
}
}
else
{
if (__ip.ToLower() == "any")
{
ret = new IPEndPoint(IPAddress.Any, __port);
}
else
{
IAsyncResult __iar = Dns.BeginResolve(__ip, null, null);
__iar.AsyncWaitHandle.WaitOne(TimeSpan.FromSeconds(10), false);
if (__iar.IsCompleted)
{
ipEntry = Dns.EndResolve(__iar);
if (ipEntry != null)
{
ipAddr = ipEntry.AddressList[0];
if (__port < 0)
{
__port = 0;
}
ret = new IPEndPoint(ipAddr, __port);
}
}
}
}
return(ret);
}
/// <summary>
/// Begins an asynchronous request to resolve a DNS host name or IP address in dotted-quad notation to an IPAddress instance.
/// </summary>
/// <param name="host">The host to resolve.</param>
/// <param name="callback">The method to call when the hostname has been resolved.</param>
/// <returns>An IAsyncResult instance that references the asynchronous request.</returns>
/// <exception cref="SocketException">There was an error while trying to resolve the host.</exception>
internal AsyncProxyResult BeginDns(string host, HandShakeComplete callback)
{
try {
Dns.BeginResolve(host, new AsyncCallback(OnResolved), this);
return(new AsyncProxyResult());
} catch {
throw new SocketException();
}
}
public void DnsObsoleteBeginResolve_Loopback_MatchesResolve()
{
IAsyncResult asyncObject = Dns.BeginResolve(IPAddress.Loopback.ToString(), null, null);
IPHostEntry results = Dns.EndResolve(asyncObject);
IPHostEntry entry = Dns.Resolve(IPAddress.Loopback.ToString());
Assert.Equal(entry.HostName, results.HostName);
Assert.Equal(entry.AddressList, results.AddressList);
}
public ServerSync(ServerProfile server, AccountProfile account, ShardProfile shard)
{
this.m_Server = server;
this.m_Account = account;
this.m_Shard = shard;
this.m_Buffer = new byte[0x800];
this.m_CryptoProvider = new LoginCrypto((uint)Network.ClientIP);
Dns.BeginResolve(server.Address, new AsyncCallback(this.OnResolve), null);
}
public void DnsObsoleteBeginResolve_BadIPv4String_ReturnsOnlyGivenIP()
{
IAsyncResult asyncObject = Dns.BeginResolve("0.0.1.1", null, null);
IPHostEntry entry = Dns.EndResolve(asyncObject);
Assert.Equal("0.0.1.1", entry.HostName);
Assert.Equal(1, entry.AddressList.Length);
Assert.Equal(IPAddress.Parse("0.0.1.1"), entry.AddressList[0]);
}
private void callbackOnNewPC(PC pc)
{
object[] objArray = new object[1] {
(object)pc
};
ArpForm arpForm = this;
arpForm.Invoke((Delegate) new delegateOnNewPC(arpForm.AddPc), objArray);
Dns.BeginResolve(pc.ip.ToString(), new AsyncCallback(this.EndResolvCallBack), pc);
}
public void AsyncResolve()
{
IAsyncResult async = Dns.BeginResolve(site1Dot, null, null);
IPHostEntry entry = Dns.EndResolve(async);
SubTestValidIPHostEntry(entry);
var ip = GetIPv4Address(entry);
Assert.AreEqual(site1Dot, ip.ToString());
}
public static void Main()
{
AsyncCallback OnResolved;
OnResolved = new AsyncCallback(Resolved);
string addr = "www.java2s.com";
Object state = new Object();
Dns.BeginResolve(addr, OnResolved, state);
}
public void AsyncResolve()
{
IAsyncResult r;
r = Dns.BeginResolve(site1Name, new AsyncCallback(ResolveCallback), null);
IAsyncResult async = Dns.BeginResolve(site1Dot, null, null);
IPHostEntry entry = Dns.EndResolve(async);
SubTestValidIPHostEntry(entry);
Assert.AreEqual(site1Dot, entry.AddressList [0].ToString());
}
/// <summary>
/// Begins an asynchronous request to resolve a DNS host name or IP address in dotted-quad notation to an IPAddress instance.
/// </summary>
/// <param name = "host">The host to resolve.</param>
/// <param name = "callback">The method to call when the hostname has been resolved.</param>
/// <returns>An IAsyncResult instance that references the asynchronous request.</returns>
/// <exception cref = "SocketException">There was an error while trying to resolve the host.</exception>
internal IAsyncProxyResult BeginDns(string host, Action <Exception> callback)
{
try
{
Dns.BeginResolve(host, OnResolved, this);
return(new IAsyncProxyResult());
}
catch
{
throw new SocketException();
}
}
public void BeginResolve_HostName_Null()
{
try {
Dns.BeginResolve((string)null,
new AsyncCallback(ResolveCallback),
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("hostName", ex.ParamName, "#5");
}
}
public void fBeginResolve(string HostName)
{
try
{
allDone = new System.Threading.ManualResetEvent(false);
// 建立 State 物件
RequestState State = new RequestState();
// 開始ansyc 解析 DNS
// 定義Callback 方法為 ResponseCallback
IAsyncResult Result = Dns.BeginResolve(HostName, new AsyncCallback(ResponseCallback), State);
int i = 0;
while (State.host == null)
{
Console.WriteLine(i.ToString());
++i;
}
// Wait until asynchronous call completes.
//allDone.WaitOne();
string IPAddr = "";
string DNS = ""; // 永久為空
string hostName = State.host.HostName;
string result = "";
foreach (var item in State.host.AddressList)
{
IPAddr += item.ToString() + "\n\r";
}
foreach (var item in State.host.Aliases)
{
DNS += item.ToString() + "\n\r";
}
result = "我的IP位置: " + IPAddr + "\n\r" + "我的網域名稱(DNS): \n\r" + DNS + "\n\r" + "我的電腦名稱: " + HostName;
MessageBox.Show(result);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
public void AsyncResolve()
{
message = "AsyncResolve";
reset.Reset();
IAsyncResult r = Dns.BeginResolve(site, new AsyncCallback(ResolveCallback), null);
Assert.IsNotNull(r, "IAsyncResult");
// note for some reason r.AsyncWaitHandle.Wait won't work as expected
// if (!r.AsyncWaitHandle.WaitOne (timeout, true))
if (!reset.WaitOne(timeout, true))
{
Assert.Ignore("Timeout");
}
Assert.IsNull(message, message);
}
private void Write()
{
while (true)
{
listBox1.Items.Clear();
string f, l;
f = maskedTextBox1.Text.Replace(" ", "");
l = maskedTextBox2.Text.Replace(" ", "");
IPAddress ipf = IPAddress.Parse(f);
IPAddress ipl = IPAddress.Parse(l);
List <IPAddress> ips = new List <IPAddress>();
//Show IP
IPHostEntry IPHost = Dns.GetHostByName(Dns.GetHostName());
listBox1.Items.Add("My IP address is " + IPHost.AddressList[0].ToString());
//Ping using ping class
ips.Add(ipf);
IPAddress iph = ipf;
while (true)
{
iph = increament(iph);
if (iph.Address == ipl.Address)
{
break;
}
// iph.Address = iph.Address + 0x1 <<1;
ips.Add(iph);
}
ips.Add(ipl);
foreach (IPAddress ip in ips)
{
Ping pi = new Ping();
PingReply pr = pi.Send(ip);
Dns.BeginResolve(ip.ToString(), new AsyncCallback(bringname), ip.ToString() + " " + pr.Status.ToString());
}
Thread.Sleep(500);
}
}
private void BeginResolve()
{
if (State != ClientState.Disconnected)
{
try
{
_currentAsyncResult = Dns.BeginResolve(_server, null, null);
InvokeAfterWait(new MethodInvoker(EndResolve), _currentAsyncResult.AsyncWaitHandle);
}
catch (Exception e)
{
if (!HandleException(e))
{
throw new AsyncTcpClientException(this, e);
}
OnResolveFailed();
return;
}
}
}
public void AsyncResolveCallback()
{
var evt = new ManualResetEvent(false);
Exception ex = null;
Dns.BeginResolve(site1Name, new AsyncCallback((IAsyncResult ar) =>
{
try {
IPHostEntry h = Dns.EndResolve(ar);
SubTestValidIPHostEntry(h);
} catch (Exception e) {
ex = e;
} finally {
evt.Set();
}
}), null);
Assert.IsTrue(evt.WaitOne(TimeSpan.FromSeconds(60)), "Wait");
Assert.IsNull(ex, "Exception");
}
public static void Main()
{
allDone = new ManualResetEvent(false);
// Create an instance of the RequestState class.
RequestState myRequestState = new RequestState();
// Begin an asynchronous request for information like host name, IP addresses, or
// aliases for specified the specified URI.
IAsyncResult asyncResult = Dns.BeginResolve("www.contoso.com", new AsyncCallback(RespCallback), myRequestState);
// Wait until asynchronous call completes.
allDone.WaitOne();
Console.WriteLine("Host name : " + myRequestState.host.HostName);
Console.WriteLine("\nIP address list : ");
for (int index = 0; index < myRequestState.host.AddressList.Length; index++)
{
Console.WriteLine(myRequestState.host.AddressList[index]);
}
Console.WriteLine("\nAliases : ");
for (int index = 0; index < myRequestState.host.Aliases.Length; index++)
{
Console.WriteLine(myRequestState.host.Aliases[index]);
}
}
public void PermitOnly_BeginResolve()
{
Dns.BeginResolve(null, null, null);
}
public static bool Connect()
{
m_ServerHost = NewConfig.ServerHost;
m_ServerPort = NewConfig.ServerPort;
try
{
Debug.Try("Parsing IP ( \"{0}\" )", m_ServerHost);
m_ServerIP = IPAddress.Parse(m_ServerHost);
m_ServerIPEP = new IPEndPoint(m_ServerIP, m_ServerPort);
Debug.EndTry("( {0} )", m_ServerIPEP);
}
catch
{
Debug.FailTry();
try
{
Debug.Try("Resolving");
IAsyncResult asyncResult = Dns.BeginResolve(m_ServerHost, null, null);
do
{
Engine.DrawNow();
}while (!asyncResult.AsyncWaitHandle.WaitOne(10, false));
IPHostEntry entry = Dns.EndResolve(asyncResult);
if (entry.AddressList.Length == 0)
{
Debug.FailTry("( AddressList is empty )");
return(false);
}
m_ServerIP = entry.AddressList[0];
m_ServerIPEP = new IPEndPoint(m_ServerIP, m_ServerPort);
Debug.EndTry("( {0} )", m_ServerIPEP);
}
catch (Exception exception)
{
Debug.FailTry();
Debug.Error(exception);
return(false);
}
}
Flush();
Engine.ValidateHandlers();
m_Server = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
Debug.Try("Connecting to login server '{0}'", m_ServerIPEP);
try
{
IAsyncResult result2 = m_Server.BeginConnect(m_ServerIPEP, null, null);
do
{
Engine.DrawNow();
}while (!result2.AsyncWaitHandle.WaitOne(10, false));
m_Server.EndConnect(result2);
}
catch (Exception exception2)
{
Debug.FailTry();
Debug.Error(exception2);
return(false);
}
Debug.EndTry();
return(true);
}
/// <summary>
/// This method is called by the Main static method to perform the
/// DNS resolutions requested by the user demonstrating the callback
/// options specified.
/// </summary>
/// <param name="host">An IP address or host name to resolve</param>
/// <param name="methodToUse">The callback option to demonstrate</param>
private void DoResolve(string host, CallbackOption methodToUse)
{
resultsDisplayed = false;
IPHostEntry hostInformation = null;
Resolver resolver = new Resolver();
switch (methodToUse)
{
case CallbackOption.UseInterface:
{
Console.WriteLine("Resolving...");
// By passing an interface that this object supports, the called
// method can notify this object of the results
try
{
resolver.Resolve(host, (IResolveCallback)this);
}
catch (System.Net.Sockets.SocketException)
{
Console.WriteLine("Bad host name (SocketException)");
resultsDisplayed = true;
}
break;
}
case CallbackOption.UseSynchronousDelegate:
{
Console.WriteLine("Resolving...");
// By passing a delegate wrapping the HostResolved method, the
// called object can notify this object of the result in a synchronous
// or asynchronous manner, depending on how it is constructed.
ResolveCallbackDelegate cb = new ResolveCallbackDelegate(HostResolved);
resolver.Resolve(host, cb);
break;
}
case CallbackOption.UseAsynchronousDelegateWithWait:
{
Console.Write("Resolving");
// By wrapping a synchronous long-running method (DNS resolution)
// with a delegate, this object can call that method
// asynchronously and show progress (in this case) or do other
// work while it executes. In this scenario, it waits on the
// result using the WaitHandle provided by IAsyncResult.
ResolveDelegate synchMethod = new ResolveDelegate(resolver.Resolve);
// The BeginInvoke method is supplied by the C# compiler...
// The IntelliSense engine does not display this at design time.
IAsyncResult ar = synchMethod.BeginInvoke(host, null, null);
// Write another period for each 100ms interval of wait time.
while (!ar.AsyncWaitHandle.WaitOne(100, false))
{
Console.Write(".");
}
Console.WriteLine();
// If any exceptions are raised by the called method, they won't
// be thrown until the results are obtained.
try
{
// The EndInvoke method is supplied by the C# compiler...
// The IntelliSense engine does not display this at design time.
hostInformation = synchMethod.EndInvoke(ar);
DisplayResults(hostInformation);
}
catch (System.Net.Sockets.SocketException)
{
Console.WriteLine("Bad host name (SocketException)");
resultsDisplayed = true;
}
break;
}
case CallbackOption.UseAsynchronousDelegateWithCallback:
{
Console.WriteLine("Resolving...");
ResolveDelegate synchMethod = new ResolveDelegate(resolver.Resolve);
AsyncCallback cb = new AsyncCallback(this.AsyncCustomCallbackMethod);
// Begin the method's execution...when finished, the callback will be
// called.
IAsyncResult ar = synchMethod.BeginInvoke(host, cb, null);
break;
}
case CallbackOption.UseFrameworkSuppliedSynchronousMethod:
{
Console.WriteLine("Resolving...");
// This calls the synchronous version of a framework-defined class
// that also explicitly supports asynchronous invocation.
try
{
hostInformation = Dns.Resolve(host);
DisplayResults(hostInformation);
}
catch (System.Net.Sockets.SocketException)
{
Console.WriteLine("Bad host name (SocketException)");
resultsDisplayed = true;
}
break;
}
case CallbackOption.UseFrameworkSuppliedAsynchronousMethodWithWait:
{
Console.Write("Resolving");
IAsyncResult ar = Dns.BeginResolve(host, null, null);
// Write another period for each 100ms interval of wait time.
while (!ar.AsyncWaitHandle.WaitOne(100, false))
{
Console.Write(".");
}
Console.WriteLine();
// If any exceptions are raised by the called method, they won't
// be thrown until the results are obtained.
try
{
hostInformation = Dns.EndResolve(ar);
DisplayResults(hostInformation);
}
catch (System.Net.Sockets.SocketException)
{
Console.WriteLine("Bad host name (SocketException)");
resultsDisplayed = true;
}
break;
}
case CallbackOption.UseFrameworkSuppliedAsynchronousMethodWithCallback:
{
Console.WriteLine("Resolving...");
AsyncCallback cb = new AsyncCallback(this.AsyncFrameworkCallbackMethod);
// Begin the call...when it is finished, the callback method will be
// called.
IAsyncResult ar = Dns.BeginResolve(host, cb, null);
break;
}
default:
Console.WriteLine("Not Implemented Yet");
break;
}
// If this method ends now, there is no guarantee that the host information
// will be displayed before the next prompt to the user for more hosts to
// resolve is shown. In order to force the wait, put the thread to sleep
// for 100ms intervals until the output has been displayed.
while (!resultsDisplayed)
{
// For the synchronous options, this will never get executed
// because the results will have been displayed before execution
// reaches this point.
System.Threading.Thread.Sleep(100);
}
}
public void DnsObsoleteBeginResolve_BadName_Throws()
{
IAsyncResult asyncObject = Dns.BeginResolve("BadName", null, null);
Assert.ThrowsAny <SocketException>(() => Dns.EndResolve(asyncObject));
}
public void Deny_BeginResolve()
{
Dns.BeginResolve(null, null, null);
}
