From 393110baf12c98a4eab88571a5dbb672ff2771dd Mon Sep 17 00:00:00 2001
From: ron <ron@e0a8ed71-7df4-0310-8962-fdc924857419>
Date: Sat, 22 Aug 2009 22:23:03 +0000
Subject: [PATCH] Fixed a bug where http.pipeline() would print a cryptic error
 if no requests were passed for it to perform. Changed it to print a warning
 if debugging is turned on, and return an empty set.

---
 nselib/http.lua | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/nselib/http.lua b/nselib/http.lua
index 503655d18..74df88951 100644
--- a/nselib/http.lua
+++ b/nselib/http.lua
@@ -618,6 +618,12 @@ pipeline = function(host, port, allReqs, options)
   local j, opts
   local opts
   local recv_status = true
+
+  -- Check for an empty request
+  if(#allReqs == 0) then
+    stdnse.print_debug(1, "Warning: empty set of requests passed to http.pipeline()")
+    return {}
+  end
   
   opts = {connect_timeout=5000, request_timeout=3000, recv_before=false}