introducing [DELAYED] for heavy query time based payloads when response time is non-deterministic

lib/core/common.py

@@ -1281,7 +1281,7 @@ def calculateDeltaSeconds(start, epsilon=0.1):
     Returns elapsed time from start till now (including expected
     error set by epsilon parameter)
     """
-    return int(time.time() - start - kb.responseTime + epsilon)
+    return time.time() - start - kb.responseTime + epsilon
 
 def initCommonOutputs():
     kb.commonOutputs = {}

lib/core/settings.py

@@ -48,6 +48,11 @@ DUMP_STOP_MARKER    = "__STOP__"
 
 PAYLOAD_DELIMITER  = "\x00"
 
+# settings used for delayed time payloads
+TIME_MIN_DELTA     = 1 # minimum difference of loading time in seconds
+TIME_N_RESPONSE    = 3 # minimum multiplicant of response time
+
+
 # System variables
 IS_WIN             = subprocess.mswindows
 # The name of the operating system dependent module imported. The following