title: GCDAsyncSocket two way authentication
body: <p>I'm using GCD AsyncSocket to create client application to connect to server java create by SSLServer Socket with self-sign certificate. With one way authentication, I can init SSL socket and communication well. But with two way authentication, I don't know how to implement it. At iOS client, I will have a client's certificate and server will trust client base on this certificate. I can read certificate from .p12 file well too.
  Many thanks to any advice.</p>