markus / CommonLib / DNSHelper.cs @ 3a52c0a7
이력 | 보기 | 이력해설 | 다운로드 (2.99 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 | 1137be84 | djkim | if ((networkInterface.NetworkInterfaceType == NetworkInterfaceType.Ethernet || |
| 20 | networkInterface.NetworkInterfaceType == NetworkInterfaceType.Wireless80211) && networkInterface.OperationalStatus == OperationalStatus.Up) |
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| 21 | af22332b | ljiyeon | {
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| 22 | IPInterfaceProperties ipProperties = networkInterface.GetIPProperties(); |
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| 23 | IPAddressCollection dnsAddresses = ipProperties.DnsAddresses; |
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| 24 | |||
| 25 | foreach (IPAddress dnsAdress in dnsAddresses) |
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| 26 | {
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| 27 | 1137be84 | djkim | if (dnsAdress.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork) |
| 28 | return dnsAdress; |
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| 29 | af22332b | ljiyeon | } |
| 30 | } |
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| 31 | } |
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| 32 | return null; |
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| 33 | } |
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| 34 | cdfb57ff | taeseongkim | |
| 35 | public static async Task<IPHostEntry> GetHostEntryAsync() |
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| 36 | {
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| 37 | IPHostEntry result = null; |
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| 38 | |||
| 39 | 566f0526 | taeseongkim | await Task.Factory.StartNew(() => |
| 40 | cdfb57ff | taeseongkim | {
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| 41 | 566f0526 | taeseongkim | try |
| 42 | cdfb57ff | taeseongkim | {
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| 43 | 566f0526 | taeseongkim | var ipaddress = CommonLib.DNSHelper.GetDnsAdress(); |
| 44 | |||
| 45 | cdfb57ff | taeseongkim | result = Dns.GetHostEntry(ipaddress); |
| 46 | 566f0526 | taeseongkim | } |
| 47 | catch (System.Net.Sockets.SocketException ex) |
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| 48 | 92442e4a | taeseongkim | {
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| 49 | 566f0526 | taeseongkim | if (ex.SocketErrorCode == System.Net.Sockets.SocketError.HostNotFound) |
| 50 | {
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| 51 | System.Diagnostics.Debug.WriteLine("DNS SocketError");
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| 52 | result = null; |
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| 53 | } |
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| 54 | 92442e4a | taeseongkim | } |
| 55 | 566f0526 | taeseongkim | catch (Exception ex) |
| 56 | {
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| 57 | throw ex; |
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| 58 | } |
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| 59 | }); |
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| 60 | |||
| 61 | System.Diagnostics.Debug.WriteLine("DNS END");
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| 62 | cdfb57ff | taeseongkim | |
| 63 | return result; |
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| 64 | } |
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| 65 | |||
| 66 | public static IPHostEntry GetHostEntryTask() |
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| 67 | {
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| 68 | IPHostEntry result = null; |
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| 69 | |||
| 70 | try |
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| 71 | {
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| 72 | var ipaddress = CommonLib.DNSHelper.GetDnsAdress(); |
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| 73 | |||
| 74 | var task = Task.Factory.StartNew(() => |
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| 75 | {
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| 76 | result = Dns.GetHostEntry(ipaddress); |
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| 77 | }); |
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| 78 | |||
| 79 | task.Wait(); |
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| 80 | } |
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| 81 | catch (Exception ex) |
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| 82 | {
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| 83 | 92442e4a | taeseongkim | if (ex.InnerException is System.Net.Sockets.SocketException) |
| 84 | {
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| 85 | System.Diagnostics.Debug.WriteLine((ex.InnerException as System.Net.Sockets.SocketException).SocketErrorCode); |
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| 86 | } |
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| 87 | else |
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| 88 | {
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| 89 | |||
| 90 | System.Diagnostics.Debug.WriteLine(ex.ToString()); |
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| 91 | } |
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| 92 | cdfb57ff | taeseongkim | } |
| 93 | |||
| 94 | return result; |
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| 95 | } |
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| 96 | af22332b | ljiyeon | } |
| 97 | } |
