我正在尝试使用 RestSharp 调用 REST Web 服务。以下是我的代码: ServicePointManager.Expect100Continue = true; ServicePointManager.DefaultConnectionLimit = 9999; ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12 | SecurityProtocolType.Ssl3; ServicePointManager.ServerCertificateValidationCallback += (sender, cert, chain, sslPolicyErrors) => true; var client = new RestClient(url); var certificate = new X509Certificate(); certificate.Import(Properties.Resources.cert, "password", X509KeyStorageFlags.PersistKeySet); client.ClientCertificates = new X509CertificateCollection() { certificate }; var request = new RestRequest(Method.POST); request.AddHeader("Connection", "keep-alive"); request.AddHeader("Content-Type", "text/plain"); request.AddParameter("undefined", $"param={param}", ParameterType.RequestBody); IRestResponse response = await client.ExecutePostTaskAsync(request); return response;但是,我收到错误 - 请求已中止:无法创建 SSL/TLS 安全通道。我也尝试搜索此错误,但在所有帖子中,人们建议使用 -SecurityProtocolType.Tls12和ServicePointManager.Expect100Continue = true。我已经在我的代码中使用了这些,但我仍然看到错误。另外,如果我尝试使用 Postman 发出类似的请求,它工作得很好。我还缺少什么吗?
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