title: How to use .key and .pem file to create a socket SSL in Android?
body: <p>My .key file like:
  -----BEGIN RSA PRIVATE KEY-----
  MIIEpAIBAAKCAQEA1j6eGXbHpqigZ1K//wnuyr5v/L2jFm7dzTtHJx8ZoMQ4CbsG</p>
  
  <p>My .pem file like:
  -----BEGIN CERTIFICATE-----
  MIIE4zCCA8ugAwIBAgIDBOziMA0GCSqGSIb3DQEBBQUAMDwxCzAJBgNVBAYTAlVT</p>
  
  <p>I don't know how many steps of authenticate at here. I only want to create a ssl socket to an IP and port, and send/receive data in that socket.
  I tried to use keystock, but perhaps I don't understand deep about it, I always get wrong.</p>
  
  <p>Please give me a guide, or sample code.</p>
  
  <p>Thanks so much.</p>