simplewallet: add public_nodes command

Lists nodes exposing their RPC port for public use

src/wallet/wallet2.cpp

@@ -13549,4 +13549,25 @@ uint64_t wallet2::get_bytes_received() const
 {
   return m_http_client.get_bytes_received();
 }
+//----------------------------------------------------------------------------------------------------
+std::vector<cryptonote::public_node> wallet2::get_public_nodes(bool white_only)
+{
+  cryptonote::COMMAND_RPC_GET_PUBLIC_NODES::request req = AUTO_VAL_INIT(req);
+  cryptonote::COMMAND_RPC_GET_PUBLIC_NODES::response res = AUTO_VAL_INIT(res);
+
+  req.white = true;
+  req.gray = !white_only;
+
+  {
+    const boost::lock_guard<boost::recursive_mutex> lock{m_daemon_rpc_mutex};
+    bool r = epee::net_utils::invoke_http_json("/get_public_nodes", req, res, m_http_client, rpc_timeout);
+    THROW_ON_RPC_RESPONSE_ERROR_GENERIC(r, {}, res, "/get_public_nodes");
+  }
+
+  std::vector<cryptonote::public_node> nodes;
+  nodes = res.white;
+  nodes.reserve(nodes.size() + res.gray.size());
+  std::copy(res.gray.begin(), res.gray.end(), std::back_inserter(nodes));
+  return nodes;
+}
 }

src/wallet/wallet2.h

@@ -886,6 +886,8 @@ private:
     uint64_t get_last_block_reward() const { return m_last_block_reward; }
     uint64_t get_device_last_key_image_sync() const { return m_device_last_key_image_sync; }
 
+    std::vector<cryptonote::public_node> get_public_nodes(bool white_only = true);
+
     template <class t_archive>
     inline void serialize(t_archive &a, const unsigned int ver)
     {