title: i got error when call webservice with nusoap
body: <p>i used nusoap for calling a webservice like this:</p>
  
  <pre><code>&lt;?php
        require 'nusoap/lib/nusoap.php';       
        $client = new nusoap_client('http://webserviceSite.com/webservices/globalservices.asmx?wsdl', 'WSDL');    
  
        $error = $client-&gt;getError();
  
        if ($error) {
          die("client construction error: {$error}\n");
        }    
  
        $answer = $client-&gt;call('GetCaptchaImage');
  
        $error = $client-&gt;getError();
  
        if ($error) {
          print_r("res:".$client-&gt;response);
          print("\n");
          print_r("debug:".$client-&gt;getDebug());
          die();
        }    
  
        print_r($answer);  
                ?&gt;
  </code></pre>
  
  <p>but i got this error:
  `"wsdl error: HTTP ERROR: Couldn't open socket connection to server <a href="http://webserviceSite.com/webservices/globalservices.asmx?wsdl" rel="nofollow">http://webserviceSite.com/webservices/globalservices.asmx?wsdl</a> prior to connect(). This is often a problem looking up the host name. "</p>
  
  <p>plz help me.i cant understand this error</p>