markus / CommonLib / DNSHelper.cs @ 1305c420
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using System; |
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using System.Collections.Generic; |
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using System.Linq; |
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using System.Net; |
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using System.Net.NetworkInformation; |
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using System.Text; |
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using System.Threading.Tasks; |
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namespace CommonLib |
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{ |
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public class DNSHelper |
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{ |
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public static IPAddress GetDnsAdress() |
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{ |
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NetworkInterface[] networkInterfaces = NetworkInterface.GetAllNetworkInterfaces(); |
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foreach (NetworkInterface networkInterface in networkInterfaces) |
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{ |
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if ((networkInterface.NetworkInterfaceType == NetworkInterfaceType.Ethernet || |
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networkInterface.NetworkInterfaceType == NetworkInterfaceType.Wireless80211) |
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&& networkInterface.OperationalStatus == OperationalStatus.Up |
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&& !networkInterface.Name.Contains("vEthernet") && !networkInterface.Name.Contains("vmware")) |
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{ |
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IPInterfaceProperties ipProperties = networkInterface.GetIPProperties(); |
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IPAddressCollection dnsAddresses = ipProperties.DnsAddresses; |
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foreach (IPAddress dnsAdress in dnsAddresses) |
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{ |
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if (dnsAdress.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork) |
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{ |
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try |
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{ |
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var host = Dns.GetHostEntry(dnsAdress); |
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if (host != null) |
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{ |
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return dnsAdress; |
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} |
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} |
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catch (Exception ex) |
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{ |
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if (ex.InnerException is System.Net.Sockets.SocketException) |
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{ |
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System.Diagnostics.Debug.WriteLine((ex.InnerException as System.Net.Sockets.SocketException).SocketErrorCode); |
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} |
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//return dnsAdress; |
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} |
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} |
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|
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} |
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} |
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} |
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return null; |
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} |
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public static IPAddress GetClientAdress() |
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{ |
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NetworkInterface[] networkInterfaces = NetworkInterface.GetAllNetworkInterfaces(); |
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foreach (NetworkInterface networkInterface in networkInterfaces) |
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{ |
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if ((networkInterface.NetworkInterfaceType == NetworkInterfaceType.Ethernet || |
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networkInterface.NetworkInterfaceType == NetworkInterfaceType.Wireless80211) |
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&& networkInterface.OperationalStatus == OperationalStatus.Up |
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&& !networkInterface.Name.Contains("vEthernet") && !networkInterface.Name.Contains("vmware")) |
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{ |
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IPInterfaceProperties ipProperties = networkInterface.GetIPProperties(); |
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IPAddressCollection dnsAddresses = ipProperties.DnsAddresses; |
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foreach (UnicastIPAddressInformation ip in ipProperties.UnicastAddresses) |
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{ |
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if (ip.Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork) |
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{ |
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return ip.Address; |
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} |
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} |
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} |
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} |
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return null; |
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} |
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public static async Task<IPHostEntry> GetHostEntryAsync() |
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{ |
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IPHostEntry result = null; |
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try |
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{ |
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var ipaddress = CommonLib.DNSHelper.GetDnsAdress(); |
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result = await Dns.GetHostEntryAsync(ipaddress); |
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} |
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catch (Exception ex) |
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{ |
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if (ex.InnerException is System.Net.Sockets.SocketException) |
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{ |
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System.Diagnostics.Debug.WriteLine((ex.InnerException as System.Net.Sockets.SocketException).SocketErrorCode); |
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} |
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else |
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{ |
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System.Diagnostics.Debug.WriteLine(ex.ToString()); |
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} |
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} |
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System.Diagnostics.Debug.WriteLine("DNS END"); |
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return result; |
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} |
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public static IPHostEntry GetHostEntryTask() |
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{ |
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IPHostEntry result = null; |
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try |
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{ |
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var ipaddress = CommonLib.DNSHelper.GetDnsAdress(); |
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var task = Task.Factory.StartNew(() => |
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{ |
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result = Dns.GetHostEntry(ipaddress); |
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}); |
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task.Wait(); |
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} |
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catch (Exception ex) |
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{ |
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if (ex.InnerException is System.Net.Sockets.SocketException) |
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{ |
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System.Diagnostics.Debug.WriteLine((ex.InnerException as System.Net.Sockets.SocketException).SocketErrorCode); |
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} |
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else |
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{ |
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System.Diagnostics.Debug.WriteLine(ex.ToString()); |
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} |
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} |
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return result; |
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} |
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} |
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} |