Azure IoThub - 类 RegistryManager - 方法 AddDeviceAsync(device) 抛出 ErrorCode:ArgumentNull;BadRequest

Posted 2023-03-27

【中文标题】Azure IoThub - 类 RegistryManager - 方法 AddDeviceAsync(device) 抛出 ErrorCode:ArgumentNull;BadRequest

【英文标题】：Azure IoThub - Class RegistryManager - Method AddDeviceAsync(device) throws ErrorCode:ArgumentNull;BadRequest

【发布时间】：2018-08-30 17:57:38

【问题描述】：

AddDeviceAsync 方法的注册表抛出异常 ArgumentNull。 参数、registryManager和输出参数notjing为null但还是抛出异常。

异常："Message":"ErrorCode:ArgumentNull;BadRequest","ExceptionMessage":"Tracking ID:adf7e83e7db046969086702500cbe73b-G:2-TimeStamp:03/21/2018 14:09:50" 方法：ProjectXXX。 NTB.FN.DeviceRegistration.IdentityCreationService.CreateDeviceIdentity() 说明：意外异常

是否与 Microsoft.Azure.Devices 库有关？？

代码

RegistryManager registryManager = null;

void Initialize()

    registryManager = RegistryManager.CreateFromConnectionString(AppSetting.IoTHubConnectionString);


public async Task<string> CreateDeviceIdentity(string deviceId, string deviceKey)

    Device device = new Device(deviceId);
    Device newdevice =  new Device();

    Exception exception = null;
    bool bExceptionHasOccured = false;

    string token = string.Empty;
    string primarySasToken = Base64Encode(deviceKey);
    string secondarySasToken = Base64Encode($"deviceId-deviceId");
    device.Authentication = new AuthenticationMechanism
    
        SymmetricKey = new SymmetricKey
        
            PrimaryKey = primarySasToken,
            SecondaryKey = secondarySasToken
        
    ;
    try
    
        newdevice = await registryManager.AddDeviceAsync(device);
        break;
    
    catch (DeviceAlreadyExistsException)
    
        token = GetDeviceToken(deviceId);
        break;
    
    catch (IotHubThrottledException e)
    

    
    catch (SocketException e)
    

    
    catch (Exception e)
    

    

    token = newdevice.Authentication.SymmetricKey.PrimaryKey;
    return token;

堆栈跟踪 System.ArgumentException: 在 Microsoft.Azure.Devices.HttpClientHelper+d__36.MoveNext（Microsoft.Azure.Devices，版本=1.0.0.0，文化=中性，PublicKeyToken=31bf3856ad364e35） 在 System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（mscorlib，版本=4.0.0.0，文化=中性，PublicKeyToken=b77a5c561934e089） 在 System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（mscorlib，版本=4.0.0.0，文化=中性，PublicKeyToken=b77a5c561934e089） 在 Microsoft.Azure.Devices.HttpClientHelper+d__121.MoveNext (Microsoft.Azure.Devices, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35) at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089) at System.Runtime.CompilerServices.TaskAwaiter1.GetResult（mscorlib，版本=4.0.0.0，文化=中性，PublicKeyToken=b77a5c561934e089） 在 ProjectXXX.NTB.FN.DeviceRegistration.IdentityCreationService+d__6.MoveNext（ProjectXXX.NTB.FN.DeviceRegistration，版本=1.0.0.0，文化=中性，PublicKeyToken=nullProjectXXX.NTB.FN.DeviceRegistration，版本=1.0.0.0，文化=中性，PublicKeyToken=null：D:\ProjectXXX\ProjectXXX.NTB\ProjectXXX.NTB\DeviceRegistrationLib\ProjectXXX.NTB.FN.DeviceRegistration\IdentityCreationService.csProjectXXX.NTB.FN.DeviceRegistration，版本=1.0.0.0，文化=中性， PublicKeyToken=null: 122)

【参考方案1】：

当我将 Microsoft.Azure.Devices 从 1.5.1 降级到 1.3.2 时它起作用了

【参考方案2】：

有效的 SymmetricKey 必须是 Base64 编码的字符串，长度在 16 到 64 个字节之间。

我不知道你的deviceKey 是什么样的。我使用 GUID 并使用以下代码块进行测试，可以成功创建设备。

public static async Task<string> CreateDeviceIdentity(string deviceId)
    
        Device device = new Device(deviceId);
        Device newdevice = new Device();

        string token = string.Empty;

        var primaryKey = Guid.NewGuid();
        var secondaryKey = Guid.NewGuid();

        byte[] bytes = Encoding.UTF8.GetBytes(primaryKey.ToString());
        string base64PrimaryKey = Convert.ToBase64String(bytes);

        bytes = Encoding.UTF8.GetBytes(secondaryKey.ToString());
        string base64SecondaryKey = Convert.ToBase64String(bytes);

        try
        

            device.Authentication = new AuthenticationMechanism
            
                SymmetricKey = new SymmetricKey
                
                    PrimaryKey = base64PrimaryKey,
                    SecondaryKey = base64SecondaryKey
                
            ;

            newdevice = await registryManager.AddDeviceAsync(device);
        
        catch (Exception ex)
        

        

        token = newdevice.Authentication.SymmetricKey.PrimaryKey;
        return token;
    

【讨论】：

感谢您的回复。我发现此代码适用于 Microsoft.Azure.Devices 1.3.2

的解决方案

【参考方案3】：

通过将 Microsoft.Azure.Devices 从 1.5.1 降级到 1.3.2 它应该可以工作