fix for redirect/HOST header bug

lib/core/common.py

@@ -3127,4 +3127,12 @@ def findPageForms(content, url, raise_=False, addToTargets=False):
         for target in retVal:
             kb.targetUrls.add(target)
 
+    return retVal
+
+def getHostHeader(url):
+    retVal = urlparse.urlparse(url).netloc
+
+    if any(map(lambda x: retVal.endswith(':%d' % x), [80, 443])):
+        retVal = retVal.split(':')[0]
+
     return retVal