reserved_only CLI flag

parity/cli.rs

@@ -70,6 +70,7 @@ Networking Options:
   --reserved-peers FILE    Provide a file containing enodes, one per line.
                            These nodes will always have a reserved slot on top
                            of the normal maximum peers.
+  --reserved-only          Connect only to reserved nodes.
 
 API and Console Options:
   --jsonrpc-off            Disable the JSON-RPC API server.
@@ -240,6 +241,7 @@ pub struct Args {
 	pub flag_nat: String,
 	pub flag_node_key: Option<String>,
   pub flag_reserved_peers: Option<String>,
+  pub flag_reserved_only: bool,
 	pub flag_cache_pref_size: usize,
 	pub flag_cache_max_size: usize,
 	pub flag_queue_max_size: usize,

parity/configuration.rs

@@ -200,6 +200,7 @@ impl Configuration {
 		net_path.push("network");
 		ret.config_path = Some(net_path.to_str().unwrap().to_owned());
 		ret.reserved_nodes = self.init_reserved_nodes();
+		ret.reserved_only = self.args.flag_reserved_only;
 		ret
 	}
 

parity/main.rs

@@ -308,7 +308,7 @@ fn execute_export(conf: Configuration) {
 		udp_port: None,
 		nat_enabled: false,
 		discovery_enabled: false,
-		pin: true,
+		reserved_only: true,
 		boot_nodes: Vec::new(),
 		use_secret: None,
 		ideal_peers: 0,
@@ -380,7 +380,7 @@ fn execute_import(conf: Configuration) {
 		udp_port: None,
 		nat_enabled: false,
 		discovery_enabled: false,
-		pin: true,
+		reserved_only: true,
 		boot_nodes: Vec::new(),
 		use_secret: None,
 		ideal_peers: 0,