Publish/Subscribe
For publish/subscribe, a broadcast model is followed. 2300 acts as a sender, while 2200 listens to the various messages.
Message layer
| Property | Value |
|---|---|
| Middleware | ZMQ sockets version 4.x |
| ZMQ message pattern | Publish-subscribe. 2200 using SUB socket and 2300 PUB socket |
| Publish binding argument | tcp://*:4204 i.e., uses underlying TCP socket connect to port 4204. |
| Subscriber connect argument | tcp://<host address>:4204. The <host address> contains the IP address of 2300. |
The messages in this section inherit from generic messages described in the messages spec. Since messages will only be broadcasted, only the base request will be used. Any new messages should also inherit from this message.
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 published dictionaries.