try making sure the connection closes in the availability checker

launch.go

@@ -281,10 +281,10 @@ func Available() bool {
 			log.Println("Connecting error:", err)
 		}
 		if conn != nil {
-			defer conn.Close()
+			conn.Close()
 			return true
 		}
-		time.Sleep(time.Duration(i*3) * time.Second)
+		time.Sleep(time.Duration(i*10) * time.Second)
 	}
 	return false
 }