Services
Services are the centerpieces of the library. A service is an interface annotated with the RPC
annotation, and contains a set of methods and fields that can be executed or accessed remotely. A simple service can be declared as follows:
Here we declare the method hello
, that accepts one argument and returns a string. The method is marked with a suspend
modifier, which means that we use coroutines to send RPC requests. Note that for now, only suspend
methods are supported in service interfaces.
To be able to use a service both in client and server code, the interface should be placed in the common module — kudos to Kotlin Multiplatform.
Now we can implement the service, so server knows how to process incoming requests.
The server will use that implementation to answer the client requests.