Bitcoin full node and query server

Oct 28, 2025

View in context in the libbitcoin Slack #general mirror.

evoskuil20:59

However, given that boost::json does in fact provide full streaming capability to/from its DOM, it becomes very attractive to allow the network layer to simply parse/serialize to/from the json DOM for both the json-rpc request/response classes, and the contained request::params/response::result objects. These objects we defined as (tiny bit simplified):

namespace libbitcoin {
namespace network {
namespace json {

/// Enumeration of JSON-RPC protocol versions.
enum class version
{
    /// Undefined version (not set).
    undefined,

    /// JSON-RPC 1.0 (bitcoin core).
    v1,

    /// JSON-RPC 2.0 (electrum daemon, electrum protocol, stratum v1).
    v2,

    /// Determine the version from the jsonrpc element.
    any,

    /// The jsonrpc value is invalid.
    invalid
};

/// Forward declaration. 
struct value_t;

struct null_t {};
using code_t = int64_t;
using boolean_t = bool;
using number_t = double;
using string_t = std::string;
using array_t = std::vector<value_t>;
using object_t = std::unordered_map<string_t, value_t>;

using identity_t = std::variant
<
    null_t,
    code_t,
    string_t
>;
using id_option = std::optional<identity_t>;

struct value_t
{
    using type = std::variant
    <
        null_t,
        boolean_t,
        number_t,
        string_t,
        array_t,
        object_t
    >;

    type inner{};
};
using value_option = std::optional<value_t>;

using params_t = std::variant
<
    array_t,
    object_t
>;
using params_option = std::optional<params_t>;

struct BCT_API result_t
{
    code_t code{};
    string_t message{};
    value_option data{};
};
using error_option = std::optional<result_t>;

struct BCT_API response_t
{
    version jsonrpc{ version::undefined };
    id_option id{};
    error_option error{};
    value_option result{};
};

struct BCT_API request_t
{
    version jsonrpc{ version::undefined };
    id_option id{};
    string_t method{};
    params_option params{};
};

} // namespace json
} // namespace network
} // namespace libbitcoin

(edited)