Only save results that found something. Not reachable hosts or no open

or filtered ports add no value to the scan and thus only cost RAM

1 files changed, 5 insertions, 1 deletions

diff --git a/src/main/java/com/it_jaros/jscanner/Scanner.java b/src/main/java/com/it_jaros/jscanner/Scanner.java
index 66ceb03..7ff838f 100644
--- a/src/main/java/com/it_jaros/jscanner/Scanner.java
+++ b/src/main/java/com/it_jaros/jscanner/Scanner.java
@@ -84,7 +84,11 @@ public class Scanner implements AutoCloseable {
                     continue;
                 }
                 activeHostWorkers--;
-                scan.addScanResult(finishedHost.get());
+                ScanResult result = finishedHost.get();
+                // we only want results that give value and not cost RAM for nothing
+                if (!result.openPorts().isEmpty() || !result.filteredPorts().isEmpty()) {
+                    scan.addScanResult(finishedHost.get());
+                }
             } catch (InterruptedException e) {
                 Thread.currentThread().interrupt();
             } catch (ExecutionException e) {