SardineFactory should support keystore

[fgiloux]

Hi,

I think that SardineFactory should get extended to support passing an SSL context as a parameter.
Something like:

public static Sardine begin(String username, String password, ProxySelector proxy, SSLContext sslContext) {
   if (sslContext != null) {
       final SSLConnectionSocketFactory socketFactory = new SSLConnectionSocketFactory(sslContext);
       return new SardineImpl(username, password, proxy) {
           @Override
           protected SSLConnectionSocketFactory createDefaultSecureSocketFactory() {
           return socketFactory;
       }
   } else
           return new SardineImpl(username, password, proxy);
};

This would allow specifying parameters for the SSL connection, like a key store and a trust store without directly calling an implementation class.

Best Regards,

Frédéric