Worker: Custom resolve

I want to resolve a domain to a specific IP address. In CURL I would use

$ curl --resolve www.example.com:443:1.0.0.0 http://www.example.com/

$ curl --resolve www.example.com:443:1.0.0.0 http://www.example.com/

$ curl --resolve www.example.com:443:1.0.0.0 http://www.example.com/

$ curl --resolve www.example.com:443:1.0.0.0 http://www.example.com/