连接问题iot aws mqttclient.net c#

我与客户的连接有问题。我尝试通过以下方式连接到我的物联网设备：

var caCert = X509Certificate.CreateFromCertFile(@"C:\DiscoD\MqttRuleDefault\root.crt");
var clientCert = new X509Certificate2(@"C:\DiscoD\MqttRuleDefault\xxxx-certificate.crt");

string path = @"C:\DiscoD\MqttRuleDefault\xxxxx-private.pem.key";
string privateKey = this.GetStringFromFile(path);
byte[] keyBuffer = Helpers.GetBytesFromPEM(privateKey, PemStringType.RsaPrivateKey);    

RSACryptoServiceProvider prov = Crypto.DecodeRsaPrivateKey(keyBuffer);
clientCert.PrivateKey = prov;

Console.WriteLine(clientCert.HasPrivateKey);

Console.WriteLine(clientCert.Issuer);
Console.WriteLine(clientCert.Verify());

RemoteCertificateValidationCallback cb = new RemoteCertificateValidationCallback(Pippo);
LocalCertificateSelectionCallback lcb = new LocalCertificateSelectionCallback(Pippo1);

var client = new MqttClient("yyyyy-ats.iot.us-west-2.amazonaws.com"
                            ,443
                            ,true
                            ,caCert
                            ,clientCert
                            ,MqttSslProtocols.TLSv1_2
                            ,cb
                            ,lcb
                            ,new List<string>() { "x-amzn-mqtt-ca" });

string clientId = Guid.NewGuid().ToString();
client.ConnectionClosed += Client_ConnectionClosed;
client.MqttMsgPublished += Client_MqttMsgPublished;
client.MqttMsgPublishReceived += Client_MqttMsgPublishReceived;
client.MqttMsgSubscribed += Client_MqttMsgSubscribed;
client.MqttMsgUnsubscribed += Client_MqttMsgUnsubscribed; 

client.Connect(clientId);

var caCert=X509Certificate.CreateFromCertFile（@“C:\discd\MqttRuleDefault\root.crt”）；
var clientCert=new X509Certificate2（@“C:\discd\MqttRuleDefault\xxxx certificate.crt”）；
字符串路径=@“C:\discd\MqttRuleDefault\xxxxx-private.pem.key”；
string privateKey=this.GetStringFromFile（路径）；
字节[]keyBuffer=Helpers.GetBytesFromPEM（privateKey，PemStringType.RsaPrivateKey）；
RSACryptoServiceProvider prov=加密解码RsaPrivateKey（keyBuffer）；
clientCert.PrivateKey=prov；
Console.WriteLine（clientCert.HasPrivateKey）；
Console.WriteLine（客户端证书颁发者）；
Console.WriteLine（clientCert.Verify（））；
RemoteCertificateValidationCallback cb=新的RemoteCertificateValidationCallback（Pippo）；
LocalCertificateSelectionCallback lcb=新的LocalCertificateSelectionCallback（Pippo1）；
var client=新的MqttClient（“yyyy-ats.iot.us-west-2.amazonaws.com”
,443
是的
，卡塞特
，客户证书
，MqttSslProtocols.TLSv1_2
，cb
，lcb
，新列表（）{“x-amzn-mqtt-ca”}）；
字符串clientId=Guid.NewGuid（）.ToString（）；
client.ConnectionClosed+=client\u ConnectionClosed；
client.MqttMsgPublished+=客户端_MqttMsgPublished；
client.mqttmsgpublisherceived+=客户机\u mqttmsgpublisherceived；
client.MqttMsgSubscribed+=client_MqttMsgSubscribed；
client.MqttMsgUnsubscribed+=client_MqttMsgUnsubscribed；
client.Connect（clientId）；

但康纳斯的消息并没有到达。

---

奇怪的是，具有相同字段的Python脚本设置正确连接，awsIotClient也正确连接。

我想解决的问题是，使用私钥将客户端证书导出到pfx，然后连接到8883端口