CODEWITHSUNDEEP
client-serverdata-distribution-service
kobi89
kobi89

Reputation: 162

How to implement request response mechanism in DDS?

I am new to DDS,I am using CyclonesDDS c++ packages

as I know DDS implementation mechanism is published/subscribe

is it possible to perform a request-response in DDS? like in clenet-server applications?

A client pc will request data then a central pc will respond with data

should I implement it logically in the program? is following way is the optimum method

client PC -> request logic -> client PC publish to a requestData topic

central PC -> waiting for requst topic -> central PC subscribe requestData check if data is requesting

central PC -> response logic -> central PC publish data to a dataWrite topic

client PC -> waiting for data topic -> central PC subscribe dataWrite topic and read data

are there callback functions to perform this?

Upvotes: 1

Views: 1505

Answers (1)

Reinier Torenbeek
Reinier Torenbeek

Reputation: 17373

Yes, it is possible to implement request-response logic over DDS. In fact, the OMG RPC Over DDS specification defines a Remote Procedure Calls (RPC) framework using the basic building blocks of DDS. That seems to provide what you are looking for.

For some concrete documentation provided by a vendor that implements this kind of logic as part of their product, you could check out the RTI Connext User's Manual Part 4: Request-Reply Communication Pattern.

Upvotes: 1

Related Questions