nslookup: support lookup of multiple record types at once

nslookup.py

@@ -2,20 +2,21 @@
 
 import dns.resolver
 
-def nslookup(domain, typ="AAAA"):
+def nslookup(domain, types=["AAAA", "A"]):
    result = ""
    rcount = 0
    try:
-      answer = dns.resolver.resolve(domain, typ)
-      for rdata in answer:
-         if rcount > 0:
-            result += "\n"
-         if hasattr(rdata, 'exchange'):
-            result += str(rdata.preference)+" "+str(rdata.exchange)
-            rcount += 1
-         else:
-            result += str(rdata)
-            rcount += 1
+      for typ in types:
+         answer = dns.resolver.resolve(domain, typ)
+         for rdata in answer:
+            if rcount > 0:
+               result += "\n"
+            if hasattr(rdata, 'exchange'):
+               result += str(rdata.preference)+" "+str(rdata.exchange)
+               rcount += 1
+            else:
+               result += str(rdata)
+               rcount += 1
    except dns.resolver.NXDOMAIN as err:
       result = str(err)
    except Exception as err:
@@ -25,7 +26,7 @@ def nslookup(domain, typ="AAAA"):
    return result
 
 def main():
-   print(nslookup("elmo.space", "AAAA"))
+   print(nslookup("elmo.space"))
 
 if __name__ == "__main__":
    main()