# Bug report

# Detailed description

The `AWS.s3.upload()` (official SDK - https://github.com/aws/aws-sdk-js) returns an object with the `Location` key that points to 4566 instead of 4572 (LocalStack S3 port).

## Expected behavior

The `Location` should point to the file on S3.

Example:

```
Location: http://localhost:4572/path/to/bucket.txt
```

## Actual behavior

The `Location` points to the LocalStack entrypoint.

Example:

```
Location: http://localhost:4566/path/to/bucket.txt
```

# Steps to reproduce

- Upload a file to S3 using the official AWS SDK (https://github.com/aws/aws-sdk-js).
- Check out the `Location` property.

## Client code

```javascript
const AWS = require('aws-sdk');
const s3 = new AWS.S3({
  region: 'us-west-1',
  endpoint: 'http://localhost:4566',
  apiVersion: '2006-03-01',
  s3ForcePathStyle: true,
});

(async () => {
  await s3
    .createBucket({ Bucket: 'my-bucket', ACL: 'private' })
    .promise();

  const { Location } = await s3
    .upload({ Key: 'file.txt', Body: 'test', Bucket: 'my-bucket' })
    .promise();

  console.assert(Location === 'http://localhost:4572/my-bucket/file.txt');
})();
```
rs = sqs_client.receive_message(QueueUrl=queue_url, MessageAttributeNames=['All'])
            self.assertGreater(len(rs['Messages']), 0)
            return rs['Messages'][0]
        message = retry(receive_message, retries=3, sleep=2)
        self.assertEqual(message['Body'], event['message'])
        
        testutil.delete_lambda_function(function_name)
        sqs_client.delete_queue(QueueUrl=queue_url)
    def test_lambda_put_item_to_dynamodb(self):
        table_name = 'ddb-table-{}'.format(short_uid())
        function_name = '{}-{}'.format(TEST_LAMBDA_FUNCTION_PREFIX, short_uid())
        aws_stack.create_dynamodb_table(table_name, partition_key='id')
        testutil.create_lambda_function(handler_file=TEST_LAMBDA_PUT_ITEM_FILE,
                                        func_name=function_name,
                                        runtime=LAMBDA_RUNTIME_PYTHON36)
        data = {
            short_uid(): 'data-{}'.format(i)
            for i in range(3)
        }
        event = {