sqs.changeMessageVisibility according to [this](https://docs.aws.amazon.com/AWSSimpleQueueService/latest/APIReference/API_ChangeMessageVisibility.html#API_ChangeMessageVisibility_Examples) makes a request directly to the Queue's URL rather than via the SQS Endpoint. (I'm already setting SQS endpoint to LOCALSTACK_HOSTNAME - makes no difference for this call)..

In localstack the queue URL host returned is by default set to the value of HOSTNAME_EXTERNAL, which I'm setting to localstack, but calling this method within a lambda, does not work and I get the error:

```
UnknownEndpoint: Inaccessible host: `localstack'. This service may not be available in the `us-east-1' region. 
```

So, how can I make the queue URL accessible from within a lambda using localstack? Effectively I need to make **http://localstack** accessible from within lambda.

I'm using the following cmd to start localstack:

```
LAMBDA_EXECUTOR=docker-reuse DEBUG=1 LAMBDA_REMOTE_DOCKER=0 DATA_DIR=/tmp/localstack/data HOSTNAME_EXTERNAL=localstack localstack start
```
bucket_name = normalize_bucket_name(bucket_name)
    replication = BUCKET_REPLICATIONS.get(bucket_name)
    status_code = 200
    if not replication:
        
        replication = {
            'Error': {
                'Code': 'ReplicationConfigurationNotFoundError',
                'Message': 'The replication configuration was not found'
            }
        }
        status_code = 404
    body = xmltodict.unparse(replication)
    return requests_response(body, status_code=status_code)
def get_encryption(bucket_name):
    bucket_name = normalize_bucket_name(bucket_name)
    encryption = BUCKET_ENCRYPTIONS.get(bucket_name)
    status_code = 200
    if not encryption:
        
        encryption = {
            'Error': {
                'Code': 'ServerSideEncryptionConfigurationNotFoundError',
                'Message': 'The server side encryption configuration was not found'
            }
        }
        status_code = 404
    body = xmltodict.unparse(encryption)
    return requests_response(body, status_code=status_code)
def get_object_lock(bucket_name):