multithreading - Why can't URI object locate method "scheme"? -

I am trying to create an asynchronous http request client using the following source code:

  #! Ural use of Pearl; Use DDP; Use threads; Use thread: line; Use LWP :: UserAgent; Use continuous NUM_WORKERS & gt; 25; My $ req_q = Thread :: line- & gt; new (); My $ res_q = Thread :: Qi-> New (); My @urls = ("http://google.com", "http://web.de"); My @Workers; (1. NUM_WORKERS) {Push @Workers, async {my $ ua = LWP :: UserAgent- & gt; new (); While (my $ req = $ req_q-> dequeue ()) {$ res_q- & gt; Enquee ($ ua- & gt; Request ($ req)); }}; } {$ Req_q-> for my $ url (@urls) Enque (HTTP :: Request-> New (GET => $ url)); } $ Req_q- & gt; For the undefined @workers; (1 .. @ curl) for {my $ res = $ res_q- & gt; Dequeue (); P $ res; } $ _- & gt; Join () for @workers; Unfortunately, I get an error:  
 
  400 package "URI :: HIT"  
 
 
 This should be a module issue, But if I use the URI package in other scripts then it works fine. 
 
 I tested the URI on URI-16Fedora (x86_64 GNU / Linux) Pearl 5.16 and Ubuntu (i686 atllon ION 6GNU / Linux) Pearl 5.14. 
 
 e.g. 
   $ perl -MURI -E'say $ INC {"URI.pm"}; URI- & gt; VERSION; URI- & gt; New ("http://www.google.com/") - & gt; Plan '$ / home / xxxxx / perl5 / lib / perl5 / URI.pm $ 1.64 $ http  

What would be the best way to troubleshoot any idea?

Thread :: Queue :: Thread: Anyone instead of the line because these objects A little handles are better However, there were two mistakes in the original code (now fixed).

  Usage Thread :: Line :: Any 1.03 qw (); ... my $ req_q = thread :: line- & gt; new (); My $ res_q = Thread :: Qi-> New ();  

should be

  Usage Thread :: Line :: Any 1.03; # Import should call ... my $ req_q = thread :: qi :: any- & gt; new (); My $ res_q = thread :: line: any-> new ();  

Thread :: Qi :: Anybody works in Import , which should not be there, so do not call calling my phone customary practice Import

This minor change will allow the code to work.

---

If Thread :: wants to continue using the queue, it seems that you have to load the module before using the thread before calling your shared objects. ; (I think that will save you memory, so it does not matter that there is a good idea to do this.) URI URI: Loads the HTI, so you

Use URI: http;

or

  BEGIN {URI-> New ('', 'http')}  

First use the thread;

This will pass you to that problem (and in the other).