POST request to S3 is returning a HTTPResponse 405

Question

I have the following CORS configuration for S3 in order to use one of my buckets as a static website hosting:

<?xml version="1.0" encoding="UTF-8"?>
<CORSConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
    <CORSRule>
        <AllowedOrigin>*</AllowedOrigin>
        <AllowedMethod>GET</AllowedMethod>
        <AllowedMethod>POST</AllowedMethod>
        <MaxAgeSeconds>3000</MaxAgeSeconds>
    </CORSRule>
</CORSConfiguration>

Then I have the following Edit Redirection Rules:

<RoutingRules>
    <RoutingRule>
    <Condition>
        <KeyPrefixEquals>abc</KeyPrefixEquals>
    </Condition>
    <Redirect>
        <HostName>myec2instance.com</HostName>
    </Redirect>
</RoutingRule>

I want S3 to redirect the request when it receives a request of POST operation. The redirection rule is working properly but for some reason S3 is returning HTTPResponse 405 when the request is a POST. Any ideas why?

Answer 1

This error has nothing to do with CORS -- it's S3 related error. The S3 website endpoints are only equipped for GET and HEAD. Anything else should be denied before the redirection rules are checked.

You can refer to the below link for more info on GET and HEAD objects.

 http://docs.aws.amazon.com/AmazonS3/latest/dev/WebsiteEndpoints.html