feat: 简单实现静态arp设置
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@@ -585,242 +585,6 @@ public class UDPServer
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}
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}
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// 强制进行ARP刷新，防止后续传输时造成影响
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// FlushArpEntry(ipAddr);
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}
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/// <summary>
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/// 跨平台ARP缓存刷新
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/// </summary>
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/// <param name="ipAddr">目标IP地址</param>
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private void FlushArpEntry(string ipAddr)
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{
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try
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{
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// 验证IP地址格式
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if (!IPAddress.TryParse(ipAddr, out var _))
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{
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logger.Warn($"Invalid IP address format: {ipAddr}");
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return;
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}
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ExecuteArpFlush(ipAddr);
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}
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catch (Exception ex)
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{
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logger.Error($"Error during ARP cache flush for {ipAddr}: {ex.Message}");
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}
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}
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/// <summary>
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/// 使用Ping类重新刷新ARP缓存
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/// </summary>
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/// <param name="ipAddr">目标IP地址</param>
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private async void RefreshArpWithPing(string ipAddr)
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{
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try
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{
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using var ping = new Ping();
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var options = new PingOptions
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{
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DontFragment = true,
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Ttl = 32,
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};
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// 创建32字节的数据包
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byte[] buffer = new byte[32];
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for (int i = 0; i < buffer.Length; i++)
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{
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buffer[i] = (byte)(i % 256);
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}
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// 异步发送ping，100ms超时
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var reply = await ping.SendPingAsync(ipAddr, 100, buffer, options);
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if (reply.Status == IPStatus.Success)
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{
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logger.Debug($"ARP cache refreshed successfully for {ipAddr} (RTT: {reply.RoundtripTime}ms)");
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}
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else
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{
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logger.Warn($"Ping to {ipAddr} failed with status: {reply.Status}, but ARP entry should still be updated");
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}
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}
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catch (Exception ex)
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{
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logger.Error($"Error refreshing ARP with ping for {ipAddr}: {ex.Message}");
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}
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}
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/// <summary>
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/// 执行ARP刷新流程：先删除ARP条目，再用ping重新刷新
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/// </summary>
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/// <param name="ipAddr">目标IP地址</param>
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private void ExecuteArpFlush(string ipAddr)
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{
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try
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{
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// 第一步：删除ARP条目
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bool deleteSuccess = DeleteArpEntry(ipAddr);
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if (deleteSuccess)
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{
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logger.Debug($"ARP entry deleted successfully for {ipAddr}");
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// 第二步：使用Ping类重新刷新ARP缓存
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RefreshArpWithPing(ipAddr);
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}
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else
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{
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logger.Warn($"Failed to delete ARP entry for {ipAddr}, but continuing with ping refresh");
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// 即使删除失败，也尝试ping刷新
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RefreshArpWithPing(ipAddr);
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}
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}
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catch (Exception ex)
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{
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logger.Error($"Failed to execute ARP flush for {ipAddr}: {ex.Message}");
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}
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}
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/// <summary>
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/// 删除ARP条目
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/// </summary>
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/// <param name="ipAddr">目标IP地址</param>
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/// <returns>是否成功删除</returns>
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private bool DeleteArpEntry(string ipAddr)
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{
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try
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{
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string command;
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string arguments;
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if (OperatingSystem.IsWindows())
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{
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// Windows: arp -d <ip>
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command = "arp";
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arguments = $"-d {ipAddr}";
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}
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else if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
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{
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// Linux/macOS: 优先使用 ip 命令删除
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if (IsCommandAvailable("ip"))
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{
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command = "ip";
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arguments = $"neigh del {ipAddr}";
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}
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else if (IsCommandAvailable("arp"))
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{
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command = "arp";
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arguments = $"-d {ipAddr}";
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}
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else
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{
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logger.Warn("Neither 'ip' nor 'arp' command is available for ARP entry deletion");
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return false;
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}
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}
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else
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{
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logger.Warn($"Unsupported operating system for ARP entry deletion");
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return false;
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}
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return ExecuteCommand(command, arguments, $"delete ARP entry for {ipAddr}");
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}
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catch (Exception ex)
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{
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logger.Error($"Error deleting ARP entry for {ipAddr}: {ex.Message}");
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return false;
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}
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}
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/// <summary>
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/// 检查系统命令是否可用
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/// </summary>
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/// <param name="command">命令名称</param>
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/// <returns>命令是否可用</returns>
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private bool IsCommandAvailable(string command)
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{
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try
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{
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var process = new System.Diagnostics.Process
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{
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StartInfo = new System.Diagnostics.ProcessStartInfo
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{
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FileName = OperatingSystem.IsWindows() ? "where" : "which",
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Arguments = command,
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UseShellExecute = false,
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RedirectStandardOutput = true,
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CreateNoWindow = true
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}
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};
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process.Start();
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process.WaitForExit(1000); // 1秒超时
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return process.ExitCode == 0;
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}
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catch
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{
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return false;
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}
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}
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/// <summary>
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/// 执行系统命令
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/// </summary>
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/// <param name="command">命令</param>
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/// <param name="arguments">参数</param>
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/// <param name="operation">操作描述</param>
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/// <returns>是否成功执行</returns>
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private bool ExecuteCommand(string command, string arguments, string operation)
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{
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try
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{
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var process = new System.Diagnostics.Process
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{
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StartInfo = new System.Diagnostics.ProcessStartInfo
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{
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FileName = command,
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Arguments = arguments,
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UseShellExecute = false,
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RedirectStandardOutput = true,
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RedirectStandardError = true,
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CreateNoWindow = true
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}
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};
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process.Start();
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// 设置超时时间，避免进程挂起
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if (process.WaitForExit(5000)) // 5秒超时
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{
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var output = process.StandardOutput.ReadToEnd();
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var error = process.StandardError.ReadToEnd();
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if (process.ExitCode == 0)
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{
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logger.Debug($"Command executed successfully: {operation}");
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return true;
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}
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else
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{
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logger.Warn($"Command failed: {operation}. Exit code: {process.ExitCode}, Error: {error}");
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return false;
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}
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}
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else
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{
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process.Kill();
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logger.Warn($"Command timed out: {operation}");
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return false;
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}
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}
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catch (Exception ex)
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{
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logger.Error($"Failed to execute command for {operation}: {ex.Message}");
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return false;
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}
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}
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/// <summary>
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