markus / CommonLib / DNSHelper.cs @ f3c48db7
이력 | 보기 | 이력해설 | 다운로드 (3.01 KB)
| 1 | af22332b | ljiyeon | using System; |
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| 2 | using System.Collections.Generic; |
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| 3 | using System.Linq; |
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| 4 | using System.Net; |
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| 5 | using System.Net.NetworkInformation; |
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| 6 | using System.Text; |
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| 7 | using System.Threading.Tasks; |
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| 8 | |||
| 9 | eb5cdefc | djkim | namespace CommonLib |
| 10 | af22332b | ljiyeon | {
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| 11 | public class DNSHelper |
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| 12 | {
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| 13 | public static IPAddress GetDnsAdress() |
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| 14 | {
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| 15 | NetworkInterface[] networkInterfaces = NetworkInterface.GetAllNetworkInterfaces(); |
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| 16 | |||
| 17 | foreach (NetworkInterface networkInterface in networkInterfaces) |
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| 18 | {
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| 19 | f87dfb18 | taeseongkim | |
| 20 | 1137be84 | djkim | if ((networkInterface.NetworkInterfaceType == NetworkInterfaceType.Ethernet || |
| 21 | f87dfb18 | taeseongkim | networkInterface.NetworkInterfaceType == NetworkInterfaceType.Wireless80211) |
| 22 | && networkInterface.OperationalStatus == OperationalStatus.Up) |
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| 23 | af22332b | ljiyeon | {
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| 24 | IPInterfaceProperties ipProperties = networkInterface.GetIPProperties(); |
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| 25 | IPAddressCollection dnsAddresses = ipProperties.DnsAddresses; |
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| 26 | |||
| 27 | foreach (IPAddress dnsAdress in dnsAddresses) |
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| 28 | {
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| 29 | 1137be84 | djkim | if (dnsAdress.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork) |
| 30 | return dnsAdress; |
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| 31 | af22332b | ljiyeon | } |
| 32 | } |
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| 33 | } |
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| 34 | return null; |
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| 35 | } |
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| 36 | cdfb57ff | taeseongkim | |
| 37 | public static async Task<IPHostEntry> GetHostEntryAsync() |
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| 38 | {
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| 39 | IPHostEntry result = null; |
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| 40 | |||
| 41 | 566f0526 | taeseongkim | await Task.Factory.StartNew(() => |
| 42 | cdfb57ff | taeseongkim | {
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| 43 | 566f0526 | taeseongkim | try |
| 44 | cdfb57ff | taeseongkim | {
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| 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) |
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| 50 | 92442e4a | taeseongkim | {
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| 51 | 566f0526 | taeseongkim | if (ex.SocketErrorCode == System.Net.Sockets.SocketError.HostNotFound) |
| 52 | {
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| 53 | System.Diagnostics.Debug.WriteLine("DNS SocketError");
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| 54 | result = null; |
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| 55 | } |
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| 56 | 92442e4a | taeseongkim | } |
| 57 | 566f0526 | taeseongkim | catch (Exception ex) |
| 58 | {
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| 59 | throw ex; |
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| 60 | } |
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| 61 | }); |
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| 62 | |||
| 63 | System.Diagnostics.Debug.WriteLine("DNS END");
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| 64 | cdfb57ff | taeseongkim | |
| 65 | return result; |
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| 66 | } |
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| 67 | |||
| 68 | public static IPHostEntry GetHostEntryTask() |
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| 69 | {
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| 70 | IPHostEntry result = null; |
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| 71 | |||
| 72 | try |
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| 73 | {
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| 74 | var ipaddress = CommonLib.DNSHelper.GetDnsAdress(); |
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| 75 | |||
| 76 | var task = Task.Factory.StartNew(() => |
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| 77 | {
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| 78 | result = Dns.GetHostEntry(ipaddress); |
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| 79 | }); |
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| 80 | |||
| 81 | task.Wait(); |
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| 82 | } |
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| 83 | catch (Exception ex) |
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| 84 | {
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| 85 | 92442e4a | taeseongkim | if (ex.InnerException is System.Net.Sockets.SocketException) |
| 86 | {
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| 87 | System.Diagnostics.Debug.WriteLine((ex.InnerException as System.Net.Sockets.SocketException).SocketErrorCode); |
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| 88 | } |
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| 89 | else |
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| 90 | {
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| 91 | |||
| 92 | System.Diagnostics.Debug.WriteLine(ex.ToString()); |
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| 93 | } |
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| 94 | cdfb57ff | taeseongkim | } |
| 95 | |||
| 96 | return result; |
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| 97 | } |
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| 98 | af22332b | ljiyeon | } |
| 99 | } |
