64 lines
1.8 KiB
C#
64 lines
1.8 KiB
C#
using System.Diagnostics.CodeAnalysis;
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using System.Net;
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using System.Net.NetworkInformation;
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namespace FastGithub
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{
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/// <summary>
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/// dns配置
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/// </summary>
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public class DnsConfig
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{
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/// <summary>
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/// IP地址
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/// </summary>
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[AllowNull]
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public string IPAddress { get; set; }
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/// <summary>
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/// 端口
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/// </summary>
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public int Port { get; set; } = 53;
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/// <summary>
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/// 转换为IPEndPoint
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/// </summary>
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/// <returns></returns>
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/// <exception cref="FastGithubException"></exception>
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public IPEndPoint ToIPEndPoint()
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{
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if (System.Net.IPAddress.TryParse(this.IPAddress, out var address) == false)
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{
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throw new FastGithubException($"无效的ip：{this.IPAddress}");
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}
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if (this.Port == 53 && IsLocalMachineIPAddress(address))
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{
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throw new FastGithubException($"配置的dns值不能指向{nameof(FastGithub)}自身：{this.IPAddress}:{this.Port}");
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}
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return new IPEndPoint(address, this.Port);
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}
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/// <summary>
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/// 是否为本机ip
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/// </summary>
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/// <param name="address"></param>
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/// <returns></returns>
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private static bool IsLocalMachineIPAddress(IPAddress address)
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{
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foreach (var @interface in NetworkInterface.GetAllNetworkInterfaces())
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{
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foreach (var addressInfo in @interface.GetIPProperties().UnicastAddresses)
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{
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if (addressInfo.Address.Equals(address))
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{
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return true;
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}
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}
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}
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return false;
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}
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}
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}
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