Expose node configuration via config file

libraries/app/api.cpp

@@ -323,7 +323,7 @@ namespace steemit { namespace app {
        return _app.p2p_node()->get_potential_peers();
     }
 
-    fc::variant_object network_node_api::get_advanced_node_parameters() const
+    graphene::net::node_configuration network_node_api::get_advanced_node_parameters() const
     {
        return _app.p2p_node()->get_advanced_node_parameters();
     }

libraries/app/application.cpp

@@ -138,6 +138,14 @@ namespace detail {
             ilog("Setting p2p max connections to ${n}", ("n", node_param["maximum_number_of_connections"]));
          }
 
+         if( _options->count("p2p-parameters") )
+         {
+            fc::variant var = fc::json::from_string( _options->at("p2p-parameters").as<string>(), fc::json::strict_parser );
+            const fc::variant_object& vo = var.get_object();
+            ilog( "Setting p2p advanced node parameters: ${vo}", ("vo", vo) );
+            _p2p_network->set_advanced_node_parameters( vo );
+         }
+
          _p2p_network->listen_to_p2p_network();
          ilog("Configured p2p node to listen on ${ip}", ("ip", _p2p_network->get_actual_listening_endpoint()));
 
@@ -1008,6 +1016,7 @@ void application::set_program_options(boost::program_options::options_descriptio
    configuration_file_options.add_options()
          ("p2p-endpoint", bpo::value<string>(), "Endpoint for P2P node to listen on")
          ("p2p-max-connections", bpo::value<uint32_t>(), "Maxmimum number of incoming connections on P2P endpoint")
+         ("p2p-parameters", bpo::value<string>()->default_value("{}"), "P2P network parameters")
          ("seed-node,s", bpo::value<vector<string>>()->composing(), "P2P nodes to connect to on startup (may specify multiple times)")
          ("checkpoint,c", bpo::value<vector<string>>()->composing(), "Pairs of [BLOCK_NUM,BLOCK_ID] that should be enforced as checkpoints.")
          ("shared-file-dir", bpo::value<string>(), "Location of the shared memory file. Defaults to data_dir/blockchain")

libraries/app/include/steemit/app/api.hpp

@@ -149,7 +149,7 @@ namespace steemit { namespace app {
           * @brief Get advanced node parameters, such as desired and max
           *        number of connections
           */
-         fc::variant_object get_advanced_node_parameters() const;
+         graphene::net::node_configuration get_advanced_node_parameters() const;
 
          /**
           * @brief Set advanced node parameters, such as desired and max

libraries/net/include/graphene/net/config.hpp

@@ -103,3 +103,6 @@
 #define GRAPHENE_NET_MIN_BLOCK_IDS_TO_PREFETCH               10000
 
 #define GRAPHENE_NET_MAX_TRX_PER_SECOND                      1000
+
+#define GRAPHENE_NET_MAX_NUMBER_OF_BLOCKS_TO_HANDLE_AT_ONE_TIME 200
+#define GRAPHENE_NET_MAX_NUMBER_OF_BLOCKS_TO_PREFETCH           (10 * GRAPHENE_NET_MAX_NUMBER_OF_BLOCKS_TO_HANDLE_AT_ONE_TIME)

libraries/net/include/graphene/net/node.hpp

@@ -25,6 +25,7 @@
 
 #include <graphene/net/core_messages.hpp>
 #include <graphene/net/message.hpp>
+#include <graphene/net/node_configuration.hpp>
 #include <graphene/net/peer_database.hpp>
 
 #include <steemit/protocol/types.hpp>
@@ -271,7 +272,7 @@ namespace graphene { namespace net {
         bool      is_connected() const;
 
         void set_advanced_node_parameters(const fc::variant_object& params);
-        fc::variant_object get_advanced_node_parameters();
+        node_configuration get_advanced_node_parameters()const;
         message_propagation_data get_transaction_propagation_data(const steemit::protocol::transaction_id_type& transaction_id);
         message_propagation_data get_block_propagation_data(const steemit::protocol::block_id_type& block_id);
         node_id_t get_node_id() const;
@@ -290,7 +291,6 @@ namespace graphene { namespace net {
 
         std::vector<potential_peer_record> get_potential_peers() const;
 
-        void disable_peer_advertising();
         fc::variant_object get_call_statistics() const;
       private:
         std::unique_ptr<detail::node_impl, detail::node_impl_deleter> my;

libraries/net/include/graphene/net/node_configuration.hpp

@@ -0,0 +1,59 @@
+#pragma once
+
+#include <graphene/net/config.hpp>
+
+#include <fc/crypto/elliptic.hpp>
+#include <fc/network/ip.hpp>
+
+namespace graphene { namespace net {
+
+struct node_configuration
+{
+   node_configuration() {}
+
+   fc::ip::endpoint listen_endpoint;
+   bool accept_incoming_connections = true;
+   bool wait_if_endpoint_is_busy = true;
+
+   /**
+    * Originally, our p2p code just had a 'node-id' that was a random number identifying this node
+    * on the network.  This is now a private key/public key pair, where the public key is used
+    * in place of the old random node-id.  The private part is unused, but might be used in
+    * the future to support some notion of trusted peers.
+    */
+   fc::ecc::private_key private_key;
+
+   /** if we have less than `desired_number_of_connections`, we will try to connect with more nodes */
+   uint32_t desired_number_of_connections = GRAPHENE_NET_DEFAULT_DESIRED_CONNECTIONS;
+   /** if we have _maximum_number_of_connections or more, we will refuse any inbound connections */
+   uint32_t maximum_number_of_connections = GRAPHENE_NET_DEFAULT_MAX_CONNECTIONS;
+   /** retry connections to peers that have failed or rejected us this often, in seconds */
+   uint32_t peer_connection_retry_timeout = GRAPHENE_NET_DEFAULT_PEER_CONNECTION_RETRY_TIME;
+   /** how many seconds of inactivity are permitted before disconnecting a peer */
+   uint32_t peer_inactivity_timeout = GRAPHENE_NET_PEER_HANDSHAKE_INACTIVITY_TIMEOUT;
+
+   bool peer_advertising_disabled = false;
+
+   uint32_t maximum_number_of_blocks_to_handle_at_one_time = GRAPHENE_NET_MAX_NUMBER_OF_BLOCKS_TO_HANDLE_AT_ONE_TIME;
+   uint32_t maximum_number_of_sync_blocks_to_prefetch = GRAPHENE_NET_MAX_NUMBER_OF_BLOCKS_TO_PREFETCH;
+   uint32_t maximum_blocks_per_peer_during_syncing = GRAPHENE_NET_MAX_BLOCKS_PER_PEER_DURING_SYNCING;
+   int64_t active_ignored_request_timeout_microseconds = 6000000;
+};
+
+} }
+
+FC_REFLECT(graphene::net::node_configuration,
+   (listen_endpoint)
+   (accept_incoming_connections)
+   (wait_if_endpoint_is_busy)
+   (private_key)
+   (desired_number_of_connections)
+   (maximum_number_of_connections)
+   (peer_connection_retry_timeout)
+   (peer_inactivity_timeout)
+   (peer_advertising_disabled)
+   (maximum_number_of_blocks_to_handle_at_one_time)
+   (maximum_number_of_sync_blocks_to_prefetch)
+   (maximum_blocks_per_peer_during_syncing)
+   (active_ignored_request_timeout_microseconds)
+)