AmazonS3 & AclAwareAmazonS3

Warning: This adapter has been deprecated since v0.4.0 and will be removed in v1.0.0. You should rather use the AwsS3 adapter.

When using the legacy Amazon S3 adapters (aws-sdk-php < 2), you will need to specify a CA certificate to be able to talk to Amazon servers in https. You can use the one which is shipped with the SDK by defining before creating the \AmazonS3 object:

define("AWS_CERTIFICATE_AUTHORITY", true);

Specifying a custom CA certificate is not required when using the Gaufrette\Adapter\AmazonS3 adapter because it uses the newest version of the AWS SDK for PHP.