108 lines
3.2 KiB
C#
108 lines
3.2 KiB
C#
using System;
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using System.Diagnostics;
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using System.Diagnostics.CodeAnalysis;
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using System.Net;
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using System.Net.Sockets;
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using System.Threading;
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using System.Threading.Tasks;
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namespace FastGithub.DomainResolve
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{
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/// <summary>
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/// IP延时记录
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/// 5分钟有效期
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/// 5秒连接超时
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/// </summary>
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[DebuggerDisplay("Adddress={Adddress} Elapsed={Elapsed}")]
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sealed class IPAddressElapsed : IEquatable<IPAddressElapsed>
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{
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private static readonly long maxLifeTime = 5 * 60 * 1000;
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private static readonly TimeSpan connectTimeout = TimeSpan.FromSeconds(5d);
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private long lastTestTickCount = 0L;
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/// <summary>
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/// 获取IP地址
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/// </summary>
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public IPAddress Adddress { get; }
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/// <summary>
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/// 获取端口
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/// </summary>
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public int Port { get; }
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/// <summary>
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/// 获取延时
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/// </summary>
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public TimeSpan Elapsed { get; private set; } = TimeSpan.MaxValue;
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/// <summary>
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/// IP延时
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/// </summary>
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/// <param name="adddress"></param>
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/// <param name="port"></param>
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public IPAddressElapsed(IPAddress adddress, int port)
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{
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this.Adddress = adddress;
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this.Port = port;
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}
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/// <summary>
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/// 是否可以更新延时
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/// </summary>
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/// <returns></returns>
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public bool CanUpdateElapsed()
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{
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return Environment.TickCount64 - this.lastTestTickCount > maxLifeTime;
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}
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/// <summary>
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/// 更新连接耗时
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/// </summary>
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/// <param name="cancellationToken"></param>
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/// <returns></returns>
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public async Task UpdateElapsedAsync(CancellationToken cancellationToken)
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{
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var stopWatch = Stopwatch.StartNew();
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try
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{
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using var timeoutTokenSource = new CancellationTokenSource(connectTimeout);
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using var linkedTokenSource = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, timeoutTokenSource.Token);
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using var socket = new Socket(this.Adddress.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
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await socket.ConnectAsync(this.Adddress, this.Port, linkedTokenSource.Token);
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this.Elapsed = stopWatch.Elapsed;
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}
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catch (Exception)
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{
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cancellationToken.ThrowIfCancellationRequested();
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this.Elapsed = TimeSpan.MaxValue;
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}
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finally
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{
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this.lastTestTickCount = Environment.TickCount64;
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stopWatch.Stop();
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}
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}
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public bool Equals(IPAddressElapsed? other)
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{
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return other != null && other.Adddress.Equals(this.Adddress);
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}
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public override bool Equals([NotNullWhen(true)] object? obj)
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{
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return obj is IPAddressElapsed other && this.Equals(other);
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}
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public override int GetHashCode()
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{
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return this.Adddress.GetHashCode();
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}
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public override string ToString()
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{
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return this.Adddress.ToString();
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}
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}
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}
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