public static bool Connect(Socket socket, IPAddress[] addresses, int port, int timeout)
{
using (var waitAsyncResult = new WaitAsyncResult((w, r) =>
{
var s = (Socket)r.AsyncState;
var succeed = false;
try
{
s.EndConnect(r);
succeed = !w.TimedOut;
}
catch (SystemException sex)
{
if (g_traceInfo.IsWarningEnabled)
{
TraceHelper.TraceWarning(g_traceInfo, sex.Message);
}
}
if (!succeed)
{
s.Close();
}
return(succeed);
}))
{
socket.BeginConnect(addresses, port, waitAsyncResult.Callback, socket);
return(waitAsyncResult.Wait(timeout));
}
}
public static IPAddress[] GetHostAddresses(string hostNameOrAddress, int timeout)
{
IPAddress[] addresses = null;
using (var waitAsyncResult = new WaitAsyncResult((w, r) =>
{
try
{
addresses = Dns.EndGetHostAddresses(r);
return(true);
}
catch (SystemException sex)
{
if (g_traceInfo.IsWarningEnabled)
{
TraceHelper.TraceWarning(g_traceInfo, sex.Message);
}
return(false);
}
}))
{
Dns.BeginGetHostAddresses(hostNameOrAddress, waitAsyncResult.Callback, null);
waitAsyncResult.Wait(timeout);
return(addresses);
}
}
public static void Wait_Completed(bool callbackSucceed)
{
// Arrange
var waitAsyncResult = new WaitAsyncResult((w, r) => callbackSucceed);
// Act
waitAsyncResult.Callback(null);
var result = waitAsyncResult.Wait(0);
// Assert
Assert.Equal(callbackSucceed, result);
Assert.False(waitAsyncResult.TimedOut);
Assert.Equal(callbackSucceed, waitAsyncResult.Succeed);
}