C# https证书通信Post/Get（解决做ssl通道时遇到“请求被中止: 未能创建 SSL/TLS 安全

1 public static string HttpPost(string url, string param = null) 2 { 3 HttpWebRequest request; 4 5 //如果是发送HTTPS请求 6 if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase)) 7 { 8 ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls; //协议按需选择， 9 ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult); 10 request = WebRequest.Create(url) as HttpWebRequest; 11 request.ProtocolVersion = HttpVersion.Version10; 12 13 } 14 else 15 { 16 request = WebRequest.Create(url) as HttpWebRequest; 17 } 18 19 request.Method = "POST"; 20 request.ContentType = "application/json"; 21 request.Accept = "*/*"; 22 request.Timeout = 15000; 23 request.AllowAutoRedirect = false; 24 //查找我们导入的证书 25 X509Store certStore = new X509Store(StoreName.My, StoreLocation.LocalMachine); 26 certStore.Open(OpenFlags.ReadOnly); 27 var aa = certStore.Certificates; 28 X509Certificate2Collection certCollection = certStore.Certificates.Find(X509FindType.FindBySubjectName, "", false); 29 request.ClientCertificates.Add(certCollection[0]); 30 31 32 StreamWriter requestStream = null; 33 WebResponse response = null; 34 string responseStr = null; 35 36 try 37 { 38 requestStream = new StreamWriter(request.GetRequestStream()); 39 requestStream.Write(param); 40 requestStream.Close(); 41 42 response = request.GetResponse(); 43 if (response != null) 44 { 45 StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8); 46 responseStr = reader.ReadToEnd(); 47 reader.Close(); 48 } 49 } 50 catch (Exception) 51 { 52 throw; 53 } 54 finally 55 { 56 request = null; 57 requestStream = null; 58 response = null; 59 } 60 61 return responseStr; 62 } 63 64 65 private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) 66 { 67 return true; //总是接受 68 }