daemon: automatic public nodes discovering and bootstrap daemon switching

1 files changed, 67 insertions, 0 deletions

diff --git a/src/rpc/bootstrap_daemon.h b/src/rpc/bootstrap_daemon.h
new file mode 100644
index 000000000..130a6458d
--- /dev/null
+++ b/src/rpc/bootstrap_daemon.h
@@ -0,0 +1,67 @@
+#pragma  once
+
+#include <functional>
+#include <vector>
+
+#include <boost/optional/optional.hpp>
+#include <boost/utility/string_ref.hpp>
+
+#include "net/http_client.h"
+#include "storages/http_abstract_invoke.h"
+
+namespace cryptonote
+{
+
+  class bootstrap_daemon
+  {
+  public:
+    bootstrap_daemon(std::function<boost::optional<std::string>()> get_next_public_node) noexcept;
+    bootstrap_daemon(const std::string &address, const boost::optional<epee::net_utils::http::login> &credentials);
+
+    std::string address() const noexcept;
+    boost::optional<uint64_t> get_height();
+    bool handle_result(bool success);
+
+    template <class t_request, class t_response>
+    bool invoke_http_json(const boost::string_ref uri, const t_request &out_struct, t_response &result_struct)
+    {
+      if (!switch_server_if_needed())
+      {
+        return false;
+      }
+
+      return handle_result(epee::net_utils::invoke_http_json(uri, out_struct, result_struct, m_http_client));
+    }
+
+    template <class t_request, class t_response>
+    bool invoke_http_bin(const boost::string_ref uri, const t_request &out_struct, t_response &result_struct)
+    {
+      if (!switch_server_if_needed())
+      {
+        return false;
+      }
+
+      return handle_result(epee::net_utils::invoke_http_bin(uri, out_struct, result_struct, m_http_client));
+    }
+
+    template <class t_request, class t_response>
+    bool invoke_http_json_rpc(const boost::string_ref command_name, const t_request &out_struct, t_response &result_struct)
+    {
+      if (!switch_server_if_needed())
+      {
+        return false;
+      }
+
+      return handle_result(epee::net_utils::invoke_http_json_rpc("/json_rpc", std::string(command_name.begin(), command_name.end()), out_struct, result_struct, m_http_client));
+    }
+
+  private:
+    bool set_server(const std::string &address, const boost::optional<epee::net_utils::http::login> &credentials = boost::none);
+    bool switch_server_if_needed();
+
+  private:
+    epee::net_utils::http::http_simple_client m_http_client;
+    std::function<boost::optional<std::string>()> m_get_next_public_node;
+  };
+
+}