Hello Errto,
Thanks for your last suggestions I have implemented all that you said but it really did not help, to resolve the issue. It's still hanging...

sub host_to_user {                                                    
+          
 my $nread ; 
 my $inp ;                          
   $/ = CRLF ;           
                                                      
   while (<$socket>) {                                  
     chomp;                                                           
+   my @data = split/-/, $_ ;    
      print $_ , "\n";  
         
      print "The first value is $data[1]\n";   
                 
        if ($data[1] eq 'THISISTHEEND') {                  
                              
           $socket->close ;                 
           print " I have executed the close\n";  

           return 0 ;                                   
       }                                                            
   }                                                               #  
+ $socket->close ; #<- position 2       
   ###print " I have executed the close\n";  
   #    return ;           
}
[download]

The output is still the same the following is the output of the above code.

$ ./client                                              
Testing> Hello                                          
I have received your message[server]-THISISTHEEND       
The first value is THISISTHEEND                         
 I have executed the close                              
Testing> So what                                        
                                                        
^C$                                                     
$
[download]

I even tried to put the $socket->close () in what I mentioned as position 2, but that was worse and the execution never got to the close section so I took it out.