# DescribeTrafficSources


Gets information about the traffic sources for the specified Auto Scaling group.

You can optionally provide a traffic source type. If you provide a traffic source type, then the results only include that traffic source type.

If you do not provide a traffic source type, then the results include all the traffic sources for the specified Auto Scaling group. 

## Request Parameters


 For information about the parameters that are common to all actions, see [Common Parameters](CommonParameters.md).

 ** AutoScalingGroupName **   
The name of the Auto Scaling group.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 255.  
Pattern: `[\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*`   
Required: Yes

 ** MaxRecords **   
The maximum number of items to return with this call. The maximum value is `50`.  
Type: Integer  
Required: No

 ** NextToken **   
The token for the next set of items to return. (You received this token from a previous call.)  
Type: String  
Pattern: `[\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*`   
Required: No

 ** TrafficSourceType **   
The traffic source type that you want to describe.  
The following lists the valid values:  
+  `elb` if the traffic source is a Classic Load Balancer.
+  `elbv2` if the traffic source is a Application Load Balancer, Gateway Load Balancer, or Network Load Balancer.
+  `vpc-lattice` if the traffic source is VPC Lattice.
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 255.  
Pattern: `[\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*`   
Required: No

## Response Elements


The following elements are returned by the service.

 ** NextToken **   
This string indicates that the response contains more items than can be returned in a single response. To receive additional items, specify this string for the `NextToken` value when requesting the next set of items. This value is null when there are no more items to return.  
Type: String  
Pattern: `[\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*` 

 **TrafficSources.member.N**   
Information about the traffic sources.  
Type: Array of [TrafficSourceState](API_TrafficSourceState.md) objects

## Errors


For information about the errors that are common to all actions, see [Common Error Types](CommonErrors.md).

 ** InvalidNextToken **   
The `NextToken` value is not valid.    
 ** message **   

HTTP Status Code: 400

 ** ResourceContention **   
You already have a pending update to an Amazon EC2 Auto Scaling resource (for example, an Auto Scaling group, instance, or load balancer).    
 ** message **   

HTTP Status Code: 500

## Examples


### Example


This example illustrates one usage of DescribeTrafficSources.

#### Sample Request


```
https://autoscaling.amazonaws.com/?Action=DescribeTrafficSources
&AutoScalingGroupName=my-asg
&Version=2011-01-01
&AUTHPARAMS
```

#### Sample Response


```
<DescribeTrafficSourcesResponse xmlns="https://autoscaling.amazonaws.com/doc/2011-01-01/">
  <DescribeTrafficSourcesResult>
    <TrafficSources>
      <Identifier>arn:aws:vpc-lattice:us-west-2:123456789012:targetgroup/tg-0e2f2665eEXAMPLE</Identifier>
      <State>InService</State>
      <Type>vpc-lattice</Type>
    </TrafficSources>
  </DescribeTrafficSourcesResult>
  <ResponseMetadata>
    <RequestId>9351b5ea-b4c0-4a88-b873-c51e4EXAMPLE</RequestId>
  </ResponseMetadata>
</DescribeTrafficSourcesResponse>
```

## See Also


For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS Command Line Interface V2](https://docs.aws.amazon.com/goto/cli2/autoscaling-2011-01-01/DescribeTrafficSources) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/autoscaling-2011-01-01/DescribeTrafficSources) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/autoscaling-2011-01-01/DescribeTrafficSources) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/autoscaling-2011-01-01/DescribeTrafficSources) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/DescribeTrafficSources) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/autoscaling-2011-01-01/DescribeTrafficSources) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/autoscaling-2011-01-01/DescribeTrafficSources) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/autoscaling-2011-01-01/DescribeTrafficSources) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/DescribeTrafficSources) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/autoscaling-2011-01-01/DescribeTrafficSources)