title: Verify return code: 20 (unable to get local issuer certificate)
body: <p>I have a problem similar to this: <a href="https://stackoverflow.com/questions/11500684/apple-push-notification-in-production-environment-unable-to-get-local-issuer-c">Apple Push Notification in Production Environment : Unable to get local issuer certificate</a>
  but in my local computer.
  I followed this tutorial: <a href="http://www.raywenderlich.com/3443/apple-push-notification-services-tutorial-part-12" rel="nofollow noreferrer">http://www.raywenderlich.com/3443/apple-push-notification-services-tutorial-part-12</a> but in this step</p>
  
  <pre><code>openssl s_client -connect gateway.sandbox.push.apple.com:2195 -cert PushChatCert.pem -key PushChatKey.pem
  </code></pre>
  
  <p>It says:</p>
  
  <blockquote>
    <p>(A lot of number and letters)
    Verify return code: 20 (unable to get local issuer certificate)</p>
  </blockquote>
  
  <p>What the problem is? Thank you</p>