c# - AWS Cognito : How to make authentication request in . 注册/登录后的网络

Question

使用适用于 .Net 的 AWS 开发工具包，我可以使用在 UserPool 中注册用户

AmazonCognitoIdentityProviderClient provider = new AmazonCognitoIdentityProviderClient(new Amazon.Runtime.AnonymousAWSCredentials(), RegionEndpoint.USEast1);
SignUpRequest signUpRequest = new SignUpRequest()
        {
            ClientId = CLIENTAPP_ID,
            Password = user.Password,
            Username = user.Username
        };

await provider.SignUpAsync(signUpRequest);

注册后，我想验证用户身份并登录并重定向到某个授权页面。使用以下代码，我可以获得 Auth Token

CognitoUserPool userPool = new CognitoUserPool(this.POOL_ID, this.CLIENTAPP_ID, provider);
CognitoUser user = new CognitoUser(username, this.CLIENTAPP_ID, userPool, provider);

InitiateSrpAuthRequest authRequest = new InitiateSrpAuthRequest()
  {
    Password = password
  };

AuthFlowResponse authResponse = await user.StartWithSrpAuthAsync(authRequest).ConfigureAwait(false);
 if (authResponse.AuthenticationResult != null)
 {
  // Here i can see authResponse.AuthenticationResult.AccessToken
}

但是现在对于 GetUserAttributes 或 DeleteUser 的任何下一个请求，我如何使用返回的用户 token ？
我看到有userPool.getCurrentUser();但这在.Net SDK中不可用，我认为它在JS SDK中。

那么如何在注册/登录后发出经过身份验证的请求以使用 .Net SDK 或使用 REST Api 调用执行各种其他操作，如 UpdateAttributes 或 DeleteUser 等

请建议

Answer 1

调用 StartWithSrpAuthAsync 成功返回后，您可以使用 user反对并调用GetCognitoAWSCredentials .

CognitoAWSCredentials credentials =
    user.GetCognitoAWSCredentials("identityPoolID", RegionEndpoint.<Your_Identity_Pool_Region>);

然后使用这些凭据:

// examples
await user.UpdateAttributesAsync(...);
await user.DeleteUserAsync();

new AmazonLambdaClient(credentials, AuthenticationManager.Region);
new AmazonS3Client(credentials);

您还可以调用电话获取用户:

string accessToken = authResponse.AuthenticationResult.AccessToken;

Task<GetUserResponse> responseTask =
    provider.GetUserAsync(new GetUserRequest
    {
        AccessToken = accessToken
    });

GetUserResponse responseObject = await responseTask;

一些引用资料:

https://aws.amazon.com/blogs/developer/cognitoauthentication-extension-library-developer-preview/

https://docs.aws.amazon.com/sdk-for-net/v3/developer-guide/cognito-authentication-extension.html#more-authentication-options

搜索 GetCognitoAWSCredentials页面内