title: APNS P12 certificate stopped working?
body: <p>I am using ASP.NET server to send push notification to APNS. I am using PushSharp library. Suddenly, push notification stopped working. I got this exception,</p>
  
  <pre><code>The maximum number of Send attempts to send the notification was reached
  </code></pre>
  
  <p>I searched and found that APNS is no longer support SSL v3. <a href="https://developer.apple.com/news/?id=10222014a" rel="nofollow">https://developer.apple.com/news/?id=10222014a</a> and I found that the latest version of library is also using Tls. So I updated the library. But now I am getting,</p>
  
  <pre><code>System.IO.IOException: Received an unexpected EOF or 0 bytes from the transport stream.
  </code></pre>
  
  <p>My .p12 certficate validity is 3/4/2014 to 3/4/2015. I have generated the .p12 cert file when APNS support SSL v3. Will I need to update the p12 certificate?</p>