markus / CommonLib / DNSHelper.cs @ 9f55b953
이력 | 보기 | 이력해설 | 다운로드 (3.01 KB)
| 1 | af22332b | ljiyeon | using System; |
|---|---|---|---|
| 2 | using System.Collections.Generic; |
||
| 3 | using System.Linq; |
||
| 4 | using System.Net; |
||
| 5 | using System.Net.NetworkInformation; |
||
| 6 | using System.Text; |
||
| 7 | using System.Threading.Tasks; |
||
| 8 | |||
| 9 | eb5cdefc | djkim | namespace CommonLib |
| 10 | af22332b | ljiyeon | {
|
| 11 | public class DNSHelper |
||
| 12 | {
|
||
| 13 | public static IPAddress GetDnsAdress() |
||
| 14 | {
|
||
| 15 | NetworkInterface[] networkInterfaces = NetworkInterface.GetAllNetworkInterfaces(); |
||
| 16 | |||
| 17 | foreach (NetworkInterface networkInterface in networkInterfaces) |
||
| 18 | {
|
||
| 19 | f87dfb18 | taeseongkim | |
| 20 | 1137be84 | djkim | if ((networkInterface.NetworkInterfaceType == NetworkInterfaceType.Ethernet || |
| 21 | f87dfb18 | taeseongkim | networkInterface.NetworkInterfaceType == NetworkInterfaceType.Wireless80211) |
| 22 | && networkInterface.OperationalStatus == OperationalStatus.Up) |
||
| 23 | af22332b | ljiyeon | {
|
| 24 | IPInterfaceProperties ipProperties = networkInterface.GetIPProperties(); |
||
| 25 | IPAddressCollection dnsAddresses = ipProperties.DnsAddresses; |
||
| 26 | |||
| 27 | foreach (IPAddress dnsAdress in dnsAddresses) |
||
| 28 | {
|
||
| 29 | 1137be84 | djkim | if (dnsAdress.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork) |
| 30 | return dnsAdress; |
||
| 31 | af22332b | ljiyeon | } |
| 32 | } |
||
| 33 | } |
||
| 34 | return null; |
||
| 35 | } |
||
| 36 | cdfb57ff | taeseongkim | |
| 37 | public static async Task<IPHostEntry> GetHostEntryAsync() |
||
| 38 | {
|
||
| 39 | IPHostEntry result = null; |
||
| 40 | |||
| 41 | 566f0526 | taeseongkim | await Task.Factory.StartNew(() => |
| 42 | cdfb57ff | taeseongkim | {
|
| 43 | 566f0526 | taeseongkim | try |
| 44 | cdfb57ff | taeseongkim | {
|
| 45 | 566f0526 | taeseongkim | var ipaddress = CommonLib.DNSHelper.GetDnsAdress(); |
| 46 | |||
| 47 | cdfb57ff | taeseongkim | result = Dns.GetHostEntry(ipaddress); |
| 48 | 566f0526 | taeseongkim | } |
| 49 | catch (System.Net.Sockets.SocketException ex) |
||
| 50 | 92442e4a | taeseongkim | {
|
| 51 | 566f0526 | taeseongkim | if (ex.SocketErrorCode == System.Net.Sockets.SocketError.HostNotFound) |
| 52 | {
|
||
| 53 | System.Diagnostics.Debug.WriteLine("DNS SocketError");
|
||
| 54 | result = null; |
||
| 55 | } |
||
| 56 | 92442e4a | taeseongkim | } |
| 57 | 566f0526 | taeseongkim | catch (Exception ex) |
| 58 | {
|
||
| 59 | throw ex; |
||
| 60 | } |
||
| 61 | }); |
||
| 62 | |||
| 63 | System.Diagnostics.Debug.WriteLine("DNS END");
|
||
| 64 | cdfb57ff | taeseongkim | |
| 65 | return result; |
||
| 66 | } |
||
| 67 | |||
| 68 | public static IPHostEntry GetHostEntryTask() |
||
| 69 | {
|
||
| 70 | IPHostEntry result = null; |
||
| 71 | |||
| 72 | try |
||
| 73 | {
|
||
| 74 | var ipaddress = CommonLib.DNSHelper.GetDnsAdress(); |
||
| 75 | |||
| 76 | var task = Task.Factory.StartNew(() => |
||
| 77 | {
|
||
| 78 | result = Dns.GetHostEntry(ipaddress); |
||
| 79 | }); |
||
| 80 | |||
| 81 | task.Wait(); |
||
| 82 | } |
||
| 83 | catch (Exception ex) |
||
| 84 | {
|
||
| 85 | 92442e4a | taeseongkim | if (ex.InnerException is System.Net.Sockets.SocketException) |
| 86 | {
|
||
| 87 | System.Diagnostics.Debug.WriteLine((ex.InnerException as System.Net.Sockets.SocketException).SocketErrorCode); |
||
| 88 | } |
||
| 89 | else |
||
| 90 | {
|
||
| 91 | |||
| 92 | System.Diagnostics.Debug.WriteLine(ex.ToString()); |
||
| 93 | } |
||
| 94 | cdfb57ff | taeseongkim | } |
| 95 | |||
| 96 | return result; |
||
| 97 | } |
||
| 98 | af22332b | ljiyeon | } |
| 99 | } |
