syntax = "proto3";

message HelloReq {
  uint32 protocol_version = 1;
}

message HelloRsp {
  uint32 protocol_version = 1;
  uint32 vendor_id = 2;
  uint32 product_id = 3;
  uint32 firmware_major = 4;
  uint32 firmware_minor = 5;
  uint32 capability_flags = 6;
}

message CdcPacketBody {
  oneof body {
    HelloReq hello_req = 1;
    HelloRsp hello_rsp = 2;
  }
}