2.1.1.2.2 Sending Reply
If the OperationType of the request message is OneWayRequest(1), then an implementation MUST NOT send any response. The rest of this section applies only to incoming request messages where the OperationType of the message is Request(0).
An implementation MUST construct a TCP message frame as specified in Message Frame Structure (section 2.2.3.3) with the following constraints:
The implementation SHOULD use single message content (section 2.2.3.3.1) but MAY use chunked message content (section 2.2.3.3.2).<7>
The OperationType MUST be written as Reply(2).
The associated Method Type of the target Remote Method obtained as specified in Dispatching the Call (section 3.2.5.1.4) MUST be obtained in an implementation-specific way. If the Method Type is One-Way, then the reply MUST contain an empty message content.
Finally, the implementation MUST package the message content following the message frame as specified in Message Frame Structure (section 2.2.3.3).
A server implementation MUST send the reply in the same connection that the request came in. The implementation MAY use the Close Connection header specified in the CloseConnectionHeader subsection under the Message Frame Structure (section 2.2.3.3) to indicate the client should not send any more messages in this connection.