Question

我无法将我的C＃代码连接到AWS IoT MQTT Broker，但是我能够使用AWS MQTT Client连接到MQTT代理。我在我的C＃代码（https://www.nuget.org/packages/M2Mqtt）中使用M2MQTT作为MQTT客户端。请注意，.pfx文件是使用openSSL使用从AWS IoT下载的证书和私钥创建的。证书被激活并附加到某个东西上。 rootca.crt是亚马逊的根CA.

我一直在Client.Connect(clientId)

收到错误

{uPLibrary.Networking.M2Mqtt.Exceptions.MqttCommunicationException：类型异常＆＃39; uPLibrary.Networking.M2Mqtt.Exceptions.MqttCommunicationException＆＃39; 被扔了。在 uPLibrary.Networking.M2Mqtt.MqttClient.SendReceive（Byte [] msgBytes， Int32超时）at uPLibrary.Networking.M2Mqtt.MqttClient.Connect（String clientId，String username，String password，Boolean willRetain，Byte willQosLevel， Boolean willFlag，String willTopic，String willMessage，Boolean cleanSession，UInt16 keepAlivePeriod）at uPLibrary.Networking.M2Mqtt.MqttClient.Connect（String clientId）

以下是我的代码

   private const string IotEndpoint = "xxvf6ihlpxlxf6.iot.us-east-2.amazonaws.com";

        private const int BrokerPort = 8883;

        private const string Topic = "dsfds2MQTT/#";
         var clientCert = new X509Certificate2("C:\\Program Files (x86)\\GnuWin32\\bin\\XXXX.pfx", "XXX#");

                var caCert = X509Certificate.CreateFromCertFile("C:\\Program Files (x86)\\GnuWin32\\bin\\rootca.crt");

                // create the client
                var client = new MqttClient(IotEndpoint, BrokerPort, true, caCert, clientCert, MqttSslProtocols.TLSv1_2);
                //message to publish - could be anything
                var message = "Test message";
                string clientId = Guid.NewGuid().ToString();
                //client naming has to be unique if there was more than one publisher
                client.Connect(clientId);
                //publish to the topic
                client.Publish(Topic, Encoding.UTF8.GetBytes(message));

我还查看了此链接Getting AuthenticationException when connect M2Mqtt.MqttClient to Mosquitto broker with TLS和A call to SSPI failed, see inner exception paho m2mqtt Dot.Net(c#) client SSL/TLS connection 他们通过将.crt转换为.pfx来修复问题，但就我的情况而言是亚马逊根CA，我不确定如何在没有私钥的情况下转换为.pfx。这看起来像是一个身份验证问题，但不确定是什么问题。

MQTT客户端无法连接到AWS IoT MQTT Broker

0 个答案: