syntax = "proto3";

import "google/protobuf/descriptor.proto";

package types;

option go_package = "./types;types";

/* Service-level versioning shall use a 3-part version number (M.m.p) following semver rules */
/* 1. MAJOR version (M): increment when you make incompatible changes                        */
/* 2. MINOR version (m): increment when you add functionality in backward compatible manner  */
/* 3. PATCH version (p): increment when you make backward compatible bug fixes               */

// Extensions of file-level options for service versioning: should *not* be modified
extend google.protobuf.FileOptions {
  uint32 service_major_version = 50001;
  uint32 service_minor_version = 50002;
  uint32 service_patch_version = 50003;
}

message H128 {
  uint64 hi = 1;
  uint64 lo = 2;
}

message H160 {
  H128 hi = 1;
  uint32 lo = 2;
}

message H256 {
  H128 hi = 1;
  H128 lo = 2;
}

message H512 {
  H256 hi = 1;
  H256 lo = 2;
}

// Reply message containing the current service version on the service side
message VersionReply {
  uint32 major = 1;
  uint32 minor = 2;
  uint32 patch = 3;
}