Optimize default configuration for first use.

Author: evoskuil

data/bs.cfg

@@ -7,8 +7,8 @@ debug_file = debug.log
 error_file = error.log
 # The log archive directory, defaults to 'archive'.
 archive_directory = archive
-# The size at which a log is archived, defaults to 0 (disabled).
-rotation_size = 0
+# The size at which a log is archived, defaults to 10000000 (0 disables).
+rotation_size = 10000000
 # The minimum free space required in the archive directory, defaults to 0.
 minimum_free_space = 0
 # The maximum combined size of archived logs, defaults to 0 (maximum).
@@ -35,10 +35,10 @@ identifier = 3652501241
 validate_checksum = false
 # The port for incoming connections, defaults to 8333 (use 18333 for testnet).
 inbound_port = 8333
-# The target number of incoming network connections, defaults to 8.
-inbound_connections = 8
-# The target number of outgoing network connections, defaults to 8.
-outbound_connections = 8
+# The target number of incoming network connections, defaults to 0.
+inbound_connections = 0
+# The target number of outgoing network connections, defaults to 2.
+outbound_connections = 2
 # The attempt limit for manual connection establishment, defaults to 0 (forever).
 manual_attempt_limit = 0
 # The number of concurrent attempts to establish one connection, defaults to 5.
@@ -51,8 +51,8 @@ channel_handshake_seconds = 30
 channel_heartbeat_minutes = 5
 # The inactivity time limit for any connection, defaults to 30.
 channel_inactivity_minutes = 30
-# The age limit for any connection, defaults to 1440.
-channel_expiration_minutes = 1440
+# The age limit for any connection, defaults to 60.
+channel_expiration_minutes = 60
 # The time limit for obtaining seed addresses, defaults to 30.
 channel_germination_seconds = 30
 # The maximum number of peer hosts in the pool, defaults to 1000.
@@ -83,8 +83,8 @@ seed = seed.voskuil.org:8333
 [database]
 # The blockchain database directory, defaults to 'blockchain'.
 directory = blockchain
-# Flush each write to disk, defaults to true.
-flush_writes = true
+# Flush each write to disk, defaults to false.
+flush_writes = false
 # Full database files increase by this percentage, defaults to 50.
 file_growth_rate = 50
 # Block hash table size, defaults to 650000.
@@ -101,8 +101,8 @@ cache_capacity = 0
 [blockchain]
 # The number of cores dedicated to block validation, defaults to 0 (physical cores).
 cores = 0
-# Use high thread priority for block validation, defaults to false.
-priority = false
+# Use high thread priority for block validation, defaults to true.
+priority = true
 # Use libconsensus for script validation if integrated, defaults to false.
 use_libconsensus = false
 # The maximum reorganization depth, defaults to 256 (0 for unlimited).
@@ -158,8 +158,8 @@ bip90 = true
 block_poll_seconds = 1
 # The minimum fee per byte required for transaction acceptance, defaults to 1.
 minimum_byte_fee_satoshis = 1
-# Request that peers relay transactions, defaults to true.
-relay_transactions = true
+# Request that peers relay transactions, defaults to false.
+relay_transactions = false
 # Request transactions on each channel start, defaults to true.
 refresh_transactions = true
 
@@ -176,16 +176,16 @@ handshake_seconds = 30
 secure_only = false
 # The number of query worker threads per endpoint, defaults to 1 (0 disables service).
 query_workers = 1
-# The maximum number of query subscriptions, defaults to 10000 (0 disables subscribe).
-subscription_limit = 10000
+# The maximum number of query subscriptions, defaults to 0 (subscription disabled).
+subscription_limit = 0
 # The query subscription expiration time, defaults to 10.
 subscription_expiration_minutes = 10
-# The heartbeat service interval, defaults to 5 (0 disables service).
-heartbeat_service_seconds = 5
-# Enable the block publishing service, defaults to true.
-block_service_enabled = true
-# Enable the transaction publishing service, defaults to true.
-transaction_service_enabled = true
+# The heartbeat service interval, defaults to 0 (service disabled).
+heartbeat_service_seconds = 0
+# Enable the block publishing service, defaults to false.
+block_service_enabled = false
+# Enable the transaction publishing service, defaults to false.
+transaction_service_enabled = false
 
 # The secure query endpoint, defaults to 'tcp://*:9081'.
 secure_query_endpoint = tcp://*:9081

include/bitcoin/server/parser.hpp

@@ -33,7 +33,7 @@ class BCS_API parser
   : public config::parser
 {
 public:
-    parser(const bc::config::settings& context);
+    parser(bc::config::settings context);
     parser(const configuration& defaults);
 
     /// Parse all configuration into member settings.

src/parser.cpp

@@ -46,27 +46,21 @@ parser::parser(const configuration& defaults)
 }
 
 // Initialize configuration using defaults of the given context.
-parser::parser(const bc::config::settings& context)
+parser::parser(bc::config::settings context)
   : configured(context)
 {
-    // A server/node allows 8 inbound connections by default.
-    configured.network.inbound_connections = 8;
+    // Logs will slow things if not rotated.
+    configured.network.rotation_size = 10000000;
 
-    // A server/node allows 1000 host names by default.
-    configured.network.host_pool_capacity = 1000;
+    // With block-first sync the count should be low until complete.
+    configured.network.outbound_connections = 2;
 
-    // A server/node requests transaction relay by default.
-    configured.network.relay_transactions = true;
+    // A node allows 1000 host names by default.
+    configured.network.host_pool_capacity = 1000;
 
-    // A server/node exposes full node (1) network services by default.
+    // A node exposes full node (1) network services by default.
     configured.network.services = message::version::service::node_network;
 
-    // A server prioritizes notification memory consumption over block speed.
-    configured.chain.priority = false;
-
-    // A server prioritizes restart after hard shutdown over block speed.
-    configured.database.flush_writes = true;
-
     // TODO: set this independently on each public endpoint.
     configured.protocol.message_size_limit = max_block_size + 100;
 }
@@ -155,7 +149,7 @@ options_metadata parser::load_settings()
     (
         "log.rotation_size",
         value<size_t>(&configured.network.rotation_size),
-        "The size at which a log is archived, defaults to 0 (disabled)."
+        "The size at which a log is archived, defaults to 10000000 (0 disables)."
     )
     (
         "log.minimum_free_space",
@@ -221,12 +215,12 @@ options_metadata parser::load_settings()
     (
         "network.inbound_connections",
         value<uint32_t>(&configured.network.inbound_connections),
-        "The target number of incoming network connections, defaults to 8."
+        "The target number of incoming network connections, defaults to 0."
     )
     (
         "network.outbound_connections",
         value<uint32_t>(&configured.network.outbound_connections),
-        "The target number of outgoing network connections, defaults to 8."
+        "The target number of outgoing network connections, defaults to 2."
     )
     (
         "network.manual_attempt_limit",
@@ -261,7 +255,7 @@ options_metadata parser::load_settings()
     (
         "network.channel_expiration_minutes",
         value<uint32_t>(&configured.network.channel_expiration_minutes),
-        "The age limit for any connection, defaults to 1440."
+        "The age limit for any connection, defaults to 60."
     )
     (
         "network.channel_germination_seconds",
@@ -308,7 +302,7 @@ options_metadata parser::load_settings()
     (
         "database.flush_writes",
         value<bool>(&configured.database.flush_writes),
-        "Flush each write to disk, defaults to true."
+        "Flush each write to disk, defaults to false."
     )
     (
         "database.file_growth_rate",
@@ -338,7 +332,7 @@ options_metadata parser::load_settings()
     (
         "database.cache_capacity",
         value<uint32_t>(&configured.database.cache_capacity),
-        "The maximum number of entries in the unspent outputs cache, defaults to 0."
+        "The maximum number of entries in the unspent outputs cache, defaults to 10000."
     )
 
     /* [blockchain] */
@@ -350,7 +344,7 @@ options_metadata parser::load_settings()
     (
         "blockchain.priority",
         value<bool>(&configured.chain.priority),
-        "Use high thread priority for block validation, defaults to false."
+        "Use high thread priority for block validation, defaults to true."
     )
     (
         "blockchain.use_libconsensus",
@@ -411,16 +405,16 @@ options_metadata parser::load_settings()
     )
 
     /* [node] */
-    (
-        "node.sync_peers",
-        value<uint32_t>(&configured.node.sync_peers),
-        "The maximum number of initial block download peers, defaults to 0 (physical cores)."
-    )
-    (
-        "node.sync_timeout_seconds",
-        value<uint32_t>(&configured.node.sync_timeout_seconds),
-        "The time limit for block response during initial block download, defaults to 5."
-    )
+    ////(
+    ////    "node.sync_peers",
+    ////    value<uint32_t>(&configured.node.sync_peers),
+    ////    "The maximum number of initial block download peers, defaults to 0 (physical cores)."
+    ////)
+    ////(
+    ////    "node.sync_timeout_seconds",
+    ////    value<uint32_t>(&configured.node.sync_timeout_seconds),
+    ////    "The time limit for block response during initial block download, defaults to 5."
+    ////)
     (
         "node.block_poll_seconds",
         value<uint32_t>(&configured.node.block_poll_seconds),
@@ -442,7 +436,7 @@ options_metadata parser::load_settings()
         /* Internally this is network, but it is conceptually a node setting. */
         "node.relay_transactions",
         value<bool>(&configured.network.relay_transactions),
-        "Request that peers relay transactions, defaults to true."
+        "Request that peers relay transactions, defaults to false."
     )
     (
         "node.refresh_transactions",
@@ -488,7 +482,7 @@ options_metadata parser::load_settings()
     (
         "server.subscription_limit",
         value<uint32_t>(&configured.server.subscription_limit),
-        "The maximum number of query subscriptions, defaults to 10000 (0 disables subscribe)."
+        "The maximum number of query subscriptions, defaults to 0 (subscription disabled)."
     )
     (
         "server.subscription_expiration_minutes",
@@ -498,17 +492,17 @@ options_metadata parser::load_settings()
     (
         "server.heartbeat_service_seconds",
         value<uint32_t>(&configured.server.heartbeat_service_seconds),
-        "The heartbeat service interval, defaults to 5 (0 disables service)."
+        "The heartbeat service interval, defaults to 0 (service disabled)."
     )
     (
         "server.block_service_enabled",
         value<bool>(&configured.server.block_service_enabled),
-        "Enable the block publishing service, defaults to true."
+        "Enable the block publishing service, defaults to false."
     )
     (
         "server.transaction_service_enabled",
         value<bool>(&configured.server.transaction_service_enabled),
-        "Enable the transaction publishing service, defaults to true."
+        "Enable the transaction publishing service, defaults to false."
     )
     (
         "server.secure_query_endpoint",

src/settings.cpp

@@ -27,13 +27,13 @@ using namespace asio;
 
 settings::settings()
   : query_workers(1),
-    heartbeat_service_seconds(5),
+    heartbeat_service_seconds(0),
+    subscription_limit(0),
     subscription_expiration_minutes(10),
-    subscription_limit(10000),
     priority(false),
     secure_only(false),
-    block_service_enabled(true),
-    transaction_service_enabled(true),
+    block_service_enabled(false),
+    transaction_service_enabled(false),
 
     secure_query_endpoint("tcp://*:9081"),
     secure_heartbeat_endpoint("tcp://*:9082"),