EPP over TCP
Connections must be created using TLS/SSL over TCP, to the respective live/test environment. Upon the establishment of a connection (client and server TLS/SSL handshake) the EPP Gateway server will send a greeting message to the client. Gateway pings by sending a “hello” command will also generate a greeting message back to the client.
Each EPP XML request must be encoded in UTF-8, and pre-pended by a 4 byte header, describing its total length in octets in network (big-endian) byte order.