The DataServer broker ( _probrkr.exe) or an Oracle DataServer instance of the Unified Broker) on a host machine determines the protocol requirements of the clients that connect to server components (_orasrv.exe) started by the broker on behalf of a connecting client. A distributed ProBroker or Unified Broker environment can accepts a -sslstartup or command line argument on the host machine to indicate that the types of client requests that the spawned DataServer (_msssrv.exe/_orasrv.exe) can handle should be using TLS protocol over the network. OpenEdge DataServer client should only send TLS enabled requests over the network. A -ssl start-up parameter is also accepted by the client to instantiate a TLS connection with the server component. If an OpenEdge DataServer client is started without a -ssll startup parameter and it sends a connection request to a running broker in TLS mode, the broker fails to authenticate the client connection request. However, a message is then returned internally to the client requesting it to send a TLS enabled handshake. If the client is capable of sending a TLS request, the TLS connection is automatically established without specifying the client startup parameter.

See the The Distributed DataServer using the Unified Broker Frameworkand Configure OpenEdge for an overview of the Unified Broker framework.