No RegionEndpoint or ServiceURL configured

Question

I am writing code to upload files to AWS S3 and receiving this exception:

AmazonClientException: No RegionEndpoint or ServiceURL configured

My code:

Console.WriteLine("ready to upload");
AWSCredentials credentials;
credentials = new BasicAWSCredentials(accessKeyID.Trim(), secretKey.Trim());
AmazonS3Client s3Client = new AmazonS3Client(accessKeyID.Trim(), secretKey.Trim(), Amazon.RegionEndpoint.USEast1);
Console.WriteLine("Successful verification");
Console.WriteLine("Check if the bucket exists");
if (!CheckBucketExists(s3Client, bucketName))
{
    s3Client.PutBucket(bucketName);
    Console.WriteLine("create bucket");
}
TransferUtility utility = new TransferUtility();
Console.WriteLine("Upload  Directory......");
//exception here
utility.UploadDirectory(@"E:\telerikFile\13ginabdfglil.com", bucketName);

The exception:

Amazon.Runtime.AmazonClientException: No RegionEndpoint or ServiceURL configured
  Amazon.Runtime.ClientConfig.Validate()
  Amazon.S3.AmazonS3Config.Validate()
  Amazon.Runtime.AmazonServiceClient..ctor(AWSCredentials credentials, ClientConfig config)
  Amazon.S3.AmazonS3Client..ctor()
  Amazon.S3.Transfer.TransferUtility..ctor()
  Telerik2Amazon.Program.UploadFile()

What should I do?

For services like S3 or EC2, specifying endpoint is must. So `new AmazonS3Client(credentials, RegionEndpoint.USEast1)` should work. — Mangesh, Jul 21 '20 at 12:05

score 44 · Answer 1 · answered Sep 16 '17 at 12:48

The short answer to error...

Amazon.Runtime.AmazonClientException: No RegionEndpoint or ServiceURL configured

...in my case was to specify a region when constructing the client object (for me it was AmazonSimpleEmailServiceClient).

Assuming you're using BasicAWSCredentials then try this:

var credentials = new BasicAWSCredentials(accessKeyID, secretKey);

new AmazonS3Client(credentials, RegionEndpoint.USEast1);

//                              ^^^^^^^^^^^^^^^^^^^^^^  add this

Neil · Answer 2 · 2019-05-04T06:57:37.793

First of all, you shouldn't hardcode aws credentials.

I had a similar error. Turned out it was due to changes in .Net Core:

One of the biggest changes in .NET Core is the removal of ConfigurationManager and the standard app.config and web.config files

https://docs.aws.amazon.com/sdk-for-net/v3/developer-guide/net-dg-config-netcore.html

For quick and dirty approach you can create credintial profile file on your machine see https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/setup-credentials.html

e.g. C:\Users\<USERNAME>\.aws\credentials on Windows

[default]
aws_access_key_id = your_access_key_id
aws_secret_access_key = your_secret_access_key

then in your code you can just do something like:

var dbClient = new AmazonDynamoDBClient(new StoredProfileAWSCredentials(), 
                     RegionEndpoint.USEast1);

A more involved way is: https://docs.aws.amazon.com/sdk-for-net/v3/developer-guide/net-dg-config-netcore.html#net-core-configuration-builder

public Startup(IHostingEnvironment env)
{
    var builder = new ConfigurationBuilder()
        .SetBasePath(env.ContentRootPath)
        .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
        .AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true)
        .AddEnvironmentVariables();
    Configuration = builder.Build();
}

appsettings.Development.json

{
  "AWS": {
    "Profile": "local-test-profile",
    "Region": "us-west-2"
  }
}


var options = Configuration.GetAWSOptions();
IAmazonS3 client = options.CreateServiceClient<IAmazonS3>();

Still should avoid hard code the region.. because if you move it to Europe or Asia.. you will be connecting to the wrong stuff. On AWS it just uses the roles access and regions of the executing code. THe profiles are really there to "override" this if needed.. but that is rarely the case - use the "more involved way" which is really the more preffered way.. and not that difficult — Piotr Kula, Feb 05 '21 at 13:56
The issue I found with this is that I needed to use the DryRun() method from AmazonEC2Client, which is not available with IAmazonEC2. If I try to use the CreateServiceClient() with AmazonEC2Client, it fails to create the client, throwing a "Object not set to a reference" error :( — Kappacake, Apr 22 '21 at 09:50

score 9 · Answer 3 · answered Jun 10 '21 at 05:56

I received this error when running tests for a Lambda that uses the S3 client. I resolved the error by simply providing a default profile with a region defined in ~/.aws/config:

[default]
region = us-west-1

No Lambda code changes needed. Of course YMMV depending on your circumstances.

score 8 · Answer 4 · answered Jan 21 '19 at 15:38

8

In Asp.Net this error can be fixed by adding this line to Web.config:

<add key="AWSRegion" value="us-east-1" />

Worked for me for AWSSDK.SimpleEmail v3.3

answered Jan 21 '19 at 15:38

safinilnur

199
1
4

Use `/.aws/credentials` file instead. It can be easily created using `Visual Studio AWS Toolkit`. This makes sense because when you deploy then the EC2/Lambda instance uses the roles "metadata" and gets all the info it needs. Sorry -1 cause people then copy and paste this not understanding how AWS credentials work (eg, myself) – Piotr Kula Feb 05 '21 at 13:51

xiehongguang · Answer 5 · 2019-04-08T09:28:27.743

My access key id and secret key are can be used.
Therefore I give up using TransferUtility Class and chosing another Class named PutObjectRequest to upload my files
attontion: PutObjectRequest’s Property Key,it's directory name and file name must equal to local files' directory name and file name.
codes here:

        String s3Path = "987977/Baby.db";
        Console.WriteLine("Ready to upload");
        AWSCredentials credentials;
        credentials = new BasicAWSCredentials(accessKeyID.Trim(), secretKey.Trim());
        AmazonS3Client s3Client = new AmazonS3Client(accessKeyID.Trim(), secretKey.Trim(), Amazon.RegionEndpoint.USEast1);
        Console.WriteLine("Successful verification");
        Console.WriteLine("Check： if the bucket exists");
        if (!CheckBucketExists(s3Client, bucketName))
        {
            s3Client.PutBucket(bucketName);
            Console.WriteLine("Creat bucket");
        }
        string localPath = @"E:\telerikFile\987977\Baby.db";
        PutObjectRequest obj = new PutObjectRequest();
        var fileStream = new FileStream(localPath, FileMode.Open, FileAccess.Read);
  //      obj.FilePath= @"E:\telerikFile\987977\Baby.db";
        obj.InputStream = fileStream;
        obj.BucketName = bucketName;
        obj.Key = s3Path;
       // obj.ContentBody = "This is sample content...";
        obj.CannedACL = S3CannedACL.PublicRead;
        Console.WriteLine("uploading");
        // default to set public right  
        s3Client.PutObject(obj);

For some reason, even using this approach was giving me the same error until I added on the file C:\Users\\.aws\credentials the default profile. I actually don't use the credentials on that file, but if it is missing it throws the error. It seems that it requires you the default profile on that file no matter what. — Proteo5, Jan 31 '22 at 18:17

score 1 · Answer 6 · edited Aug 21 '18 at 12:00

1

If you are using TransferUtility() try this:

var credentials = new BasicAWSCredentials(accessKeyID, secretKey);

var S3Client = new AmazonS3Client(credentials, RegionEndpoint.USEast1);

this._transferUtility = new TransferUtility(S3Client);

edited Aug 21 '18 at 12:00

Fredrik Widerberg

3,068
10
30
42

answered Aug 21 '18 at 11:41

GRD

11
1

Nino van der Mark · Answer 7 · 2021-10-26T08:52:17.057

Starting from .NET Core, there's no longer a web.config or app.config, instead the ConfigurationBuilder is used, which can retrieve configuration from a number of different sources.

The web templates for .NET use Host.CreateDefaultBuilder(args) which relies on environment variables and the appsettings.json file, for other applications the following can be done:

IConfiguration configuration = new ConfigurationBuilder()
                .SetBasePath(Directory.GetCurrentDirectory())
                .AddJsonFile(APPSETTINGS, optional: false, reloadOnChange: true)
                .AddEnvironmentVariables()
                .Build();

This will retrieve configuration from the appsettings.json file, but also from environment variables, and allows you to retrieve them as follows:

var region = configuration["AWS_REGION"];

The AWS SDK will use this configuration to retrieve the region for services retreived through Dependency Injection in any ASP.NET Core application. For Lambda's you'll need to construct a ServiceCollection manually for that to work, which can be done as such.

private readonly ServiceProvider serviceProvider;

public Function()
{
    var serviceCollection = new ServiceCollection();
    serviceCollection.AddSingleton<IAmazonDynamoDB, AmazonDynamoDBClient>();
    serviceProvider = serviceCollection.BuildServiceProvider();
}

public void FunctionHandler(string input, LambdaContext context)
{
    var dynamodb = serviceProvider.GetService<IAmazonDynamoDB>();
    // Business logic here
}

This approach should be sufficient for pretty much every use-case. If you're having issues with this, please try to troubleshoot that rather than attempt the fall-back below.

This next bit is only here for completeness, but you really shouldn't need it.

When using the above fails, you can fall back on the AWSConfigs static to set your environment variables explicitly. Using the below approach allows us to reuse our existing configuration, whether that is in the appsettings.json or in the Environment variables.

AWSConfigs.AWSRegion = configuration["AWS_REGION"];

Thanks, `AWSConfigs.AWSRegion = configuration["ap-southeast-2"];` was all I needed to get mocks and unit tests working on our Code Pipeline build server. — thinkOfaNumber, Oct 08 '21 at 00:48
@thinkOfaNumber be very weary of using this in unit tests, especially if you are running your tests in parallel, as we were. Because this static field is shared across threads, setting this in one place will set it everywhere and may lead to your tests becoming non-deterministic. — Nino van der Mark, Oct 25 '21 at 14:53
That shouldn't be a problem if all unit tests are using the same region, right? I'm not testing changing the region, just trying to mock out the AmazonIotDataClient so I can test my services without actually calling PublishAsync. — thinkOfaNumber, Oct 26 '21 at 01:38
Right, that should work fine. We were having tests that tested the validity of the region as well, which required some of them to have different values set, thus causing problems. — Nino van der Mark, Oct 26 '21 at 08:40
You can use the Nuget: AWSSDK.Extensions.NETCore.Setup and then wire up your AWS service like so: ``` services.TryAddAWSService(configuration.GetAWSOptions("sqs")); ``` This assumes you've got your appsettings.json with a section like so: ``` { "sqs": { "ServiceURL": "https://sqs.ap-southeast-2.amazonaws.com" } } ``` — Sudhanshu Mishra, Dec 09 '21 at 06:08

LeonardoX · Answer 8 · 2022-10-29T13:11:52.760

In my case, I had this error trying to run this sample code that creates some lambda functions to interact with AWS QLDB. I had to only follow one of the options from this post, which in my case was:

Managing access keys for IAM users
Configure your project, by Using the shared AWS credentials file, adding this settings to
%USERPROFILE%.aws\credentials file

credentials file:

[default] 
region = your_region_id
aws_access_key_id = your_aws_access_key_id 
aws_secret_access_key = your_aws_secret_access_key

But you could use any of the different ways AWS SDK finds the credentials, checking Credential and profile resolution

score -3 · Answer 9 · answered Nov 12 '21 at 16:19

-3

I also have this issue and nothing was helpful, aws is the worst, so complicated and their documentation is subpar that of microsft's no wonder Azure is taking marketshare

answered Nov 12 '21 at 16:19

Bogdan Banciu

169
1
6

1

This should probably have been a comment rather than an answer. – void.pointer Jun 13 '22 at 17:04

No RegionEndpoint or ServiceURL configured

9 Answers9

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