Request/Reply

For request/reply, the interface will be a client-server interface. 2200 acts as the client and 2300 as the server. It follows the semantics of remote procedure calls (RPCs), i.e., the client "calls" a function that is "remotely" executed on the server and the result is passed back to the client.

Message layer

Property	Value
Middleware	ZMQ sockets version 4.x
ZMQ message pattern	Request-reply. 2200 using REQ socket and 2300 REP socket
Server binding argument	tcp://*:4203 i.e., uses underlying TCP socket connect to port 4203.
Client connect argument	tcp://<host address>:4203. The <host address> contains the IP address of 2300.

The messages in this section inherit from generic messages described in the messages spec. Any new messages should also inherit from these messages.

Application layer

The application layer contains the specific application functions that are described in the root document. The functions are described via the contents of the request and reply dictionaries.