waits for a tor instance to come online before making a connection

src/DNSServer.js

@@ -9,8 +9,8 @@ class DNSServer extends UDPServer {
 
 		this.on('request', (req, res) => {
 			for (let question of req.question) {
-				let dns_port = (tor_pool.next().dns_port);
+				let connect = (tor_instance) => {
-				
+					let dns_port = (tor_instance.dns_port);
 					let outbound_req = dns.Request({
 						question,
 						server: { address: '127.0.0.1', port: dns_port, type: 'udp' },
@@ -36,6 +36,15 @@ class DNSServer extends UDPServer {
 					});	
 
 					outbound_req.send();
+				};
+
+				if (this.tor_pool.instances.length) {
+					connect(this.tor_pool.next());
+				}
+				else {
+					this.log.debug(`[dns]: a connection has been attempted, but no tor instances are live... waiting for an instance to come online`);
+					this.tor_pool.once('instance_created', connect);
+				}
 			}
 		});
 	}

src/SOCKSServer.js

@@ -12,7 +12,8 @@ class SOCKSServer extends SOCKS5Server{
 			var outbound_socket;
 			let buffer = [];
 
-			let socks_port = (tor_pool.next().socks_port);
+			let connect = (tor_instance) => {
+				let socks_port = tor_instance.socks_port;
 				logger && logger.info(`[socks]: ${info.srcAddr}:${info.srcPort} → 127.0.0.1:${socks_port} → ${info.dstAddr}:${info.dstPort}`)
 
 				let onClose = (error) => {
@@ -67,6 +68,13 @@ class SOCKSServer extends SOCKS5Server{
 					})
 				});
 			};
+			if (tor_pool.instances.length) {
+				connect(tor_pool.next());
+			} else {
+				logger.debug(`[socks]: a connection has been attempted, but no tor instances are live... waiting for an instance to come online`);
+				tor_pool.once('instance_created', connect);
+			}
+		};
 
 		super(handleConnection);
 

src/TorPool.js

@@ -37,7 +37,7 @@ class TorPool extends EventEmitter {
 		this.logger = logger;
 	}
 
-	get instances() { return this._instances.slice(0); }
+	get instances() { return this._instances.filter((tor) => tor.ready).slice(0); }
 
 	create_instance(callback) {
 		let config = _.extend({}, this.tor_config)
@@ -48,6 +48,7 @@ class TorPool extends EventEmitter {
 
 			instance.once('error', callback)
 			instance.once('ready', () => {
+				this.emit('instance_created', instance);
 				callback && callback(null, instance);
 			});
 		});

src/TorProcess.js

@@ -31,6 +31,7 @@ class TorProcess extends EventEmitter {
 	}
 
 	new_ip() {
+		this.log.info(`[tor-${this.process.pid}]: has requested a new identity`);
 		this.process.kill('SIGHUP');
 	}
 
@@ -82,6 +83,7 @@ class TorProcess extends EventEmitter {
 			});
 
 			this.once('ready', () => {
+				this.ready = true;
 				this.logger && this.logger.info(`[tor-${tor.pid}]: tor is ready`);
 			});