syntax = "proto3";

package chre.rpc;

service RpcWorldService {
  // Increment a number.
  rpc Increment(NumberMessage) returns (NumberMessage) {}

  // Request a stream of ticks.
  rpc Timer(TimerRequest) returns (stream TimerResponse) {}

  // Add multiple numbers.
  rpc Add(stream NumberMessage) returns (NumberMessage) {}
}

// Request and response for the Increment & Add services wrapping a number.
message NumberMessage {
  uint32 number = 1;
}

message TimerRequest {
  // Number of ticks that the server should stream.
  uint32 num_ticks = 1;
}

message TimerResponse {
  // Tick number, starting at 1 and incremented on each tick.
  uint32 tick_number = 1;
}