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我正在尝试开发通过网络连接到网络服务器的软件；在尝试使用加密狗保护我的软件之前，一切正常。我的加密狗有一些网络功能，它的 API 在网络基础设施下工作。w当我将加密狗检查代码添加到我的程序时，我收到了这个错误：

"Either the application has not called WSAStartup, or WSAStartup failed"

我放置了引发异常的代码块。我遇到异常的情况是；我登录到程序（一切正常）然后拔出加密狗，然后程序停止并要求加密狗，我再次插入加密狗并尝试登录，但我在网上遇到异常

响应 = (HttpWebResponse)request.GetResponse();

DongleService unikey = new DongleService();

                checkDongle = unikey.isConnectedNow();

                if (checkDongle)
                {
                    isPass = true;
                    this.username = txtbxUser.Text;
                    this.pass = txtbxPass.Text;
                    this.IP = combobxServer.Text;
                    string uri = @"https://" + combobxServer.Text + ":5002num_events=1";
                    request = (HttpWebRequest)WebRequest.Create(uri);
                    request.Proxy = null;
                    request.Credentials = new NetworkCredential(this.username, this.pass);
                    ServicePointManager.ServerCertificateValidationCallback = ((sender, certificate, chain, sslPolicyErrors) => true);
                    response = (HttpWebResponse)request.GetResponse();

                    Properties.Settings.Default.User = txtbxUser.Text;
                    int index = _servers.FindIndex(p => p == combobxServer.Text);
                    if (index == -1)
                    {
                        _servers.Add(combobxServer.Text);
                        Config_Save.SaveServers(_servers);
                        _servers = Config_Save.LoadServers();
                    }

                    Properties.Settings.Default.Server = combobxServer.Text;
                    // also save the password
                    if (checkBox1.CheckState.ToString() == "Checked")
                        Properties.Settings.Default.Pass = txtbxPass.Text;

                    Properties.Settings.Default.settingLoginUsername = this.username;
                    Properties.Settings.Default.settingLoginPassword = this.pass;
                    Properties.Settings.Default.settingLoginPort = "5002";
                    Properties.Settings.Default.settingLoginIP = this.IP;
                    Properties.Settings.Default.isLogin = "guest";

                    Properties.Settings.Default.Save();
                    response.Close();
                    request.Abort();
                    this.isPass = true;
                    this.Close();
                }
                else
                {
                    MessageBox.Show("Please Insert Correct Dongle!", "Dongle Error", MessageBoxButtons.OK, MessageBoxIcon.Stop);
                }
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1 回答 1

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WSAStartup 是套接字库中的第一个函数，它在开始使用网络时执行。你可以导入

 [DllImport("ws2_32.dll", CharSet = CharSet.Auto, SetLastError=true)]
 static extern Int32 WSAGetLastError();

当引发异常时，执行 WSAGetLastError 并从这里查看错误代码。希望它会帮助你。在获得 Win32Exception 的特定情况下，您可以使用来自异常的 NativeErrorCode，如@Patrick的注释中所写。

于 2012-09-22T08:58:15.577 回答