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我已编写此应用程序以使用 mqttnet 库，但连接失败。怎么可能通过 trace 获取 mqttnet？您是否注意到连接有问题？这是我的代码

            var mqttClient = new MqttFactory(new MQTTnet.Diagnostics.MqttNetLogger("MyCustomId")).CreateMqttClient();
        var caCert = X509Certificate.CreateFromCertFile("C:\\ca.crt");
        var clientCert = new X509Certificate2("C:\\certificate.pfx", "uno");

        var options = new MqttClientOptionsBuilder()
           .WithCredentials("ut", "pwd")
           .WithTcpServer("mydns", 8883)
            .WithTls(new MqttClientOptionsBuilderTlsParameters
            {
                UseTls = true,
                SslProtocol = System.Security.Authentication.SslProtocols.Tls13,
                Certificates = new List<X509Certificate>()
                    {
                        caCert, clientCert
                    },
                    CertificateValidationCallback = (X509Certificate x, X509Chain y, SslPolicyErrors z, IMqttClientOptions o) =>
                    {
                        return true;
                    }
            })
            .Build();
        MQTTnet.Client.Connecting.MqttClientAuthenticateResult r=await mqttClient.ConnectAsync(options, CancellationToken.None);

谢谢您的任何帮助将不胜感激

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1 回答 1

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我已将“CreateMqttClient”替换为“CreateManagedMqttClient”并修改了代码的后续部分，一切正常

于 2021-04-15T10:04:27.610 回答