message: [rpc] modify block query length
diff: @@ -24,7 +24,7 @@ const DEFAULT_TCP_PORT: u16 = 9860;
  const DEFAULT_WEB_SOCKET_PORT: u16 = 9870;
  // UNSPECIFIED is 0.0.0.0
  const DEFAULT_RPC_ADDRESS: IpAddr = IpAddr::V4(Ipv4Addr::UNSPECIFIED);
  -const DEFAULT_BLOCK_QUERY_MAX_RANGE: u64 = 128;
  +const DEFAULT_BLOCK_QUERY_MAX_RANGE: u64 = 32;
  #[derive(Debug, Default, Clone, PartialEq, Deserialize, Serialize, StructOpt)]
  pub struct HttpConfiguration {
  