support boolean value in matching

collectors/dnsmessage.go

@@ -127,6 +127,8 @@ func (c *DNSMessage) ReadConfig() {
 			c.ReadConfigMatching(value)
 		}
 	}
+
+	// TODO check drop policy
 }
 
 func (c *DNSMessage) LoadData(matchSource string, srcKind string) (MatchSource, error) {

config.yml

@@ -96,6 +96,7 @@ pipelines:
     dnsmessage:
       matching:
         include:
+          #dns.flags.qr: false
           dns.opcode: 0
           dns.length:
             greater-than: 50

dnsutils/message.go

@@ -946,9 +946,15 @@ func (dm *DNSMessage) Matching(matching map[string]interface{}) (error, bool) {
 				return nil, false
 			}
 
+		// bool
+		case reflect.Bool:
+			if value != fieldValue.Interface().(bool) {
+				return nil, false
+			}
+
 		// other types
 		default:
-			return fmt.Errorf("unsupported type %s", reflect.Slice), false
+			return fmt.Errorf("unsupported type value: %s", reflectedValue.Kind()), false
 		}
 
 	}