DSL.kt

class TLSSocketFactoryProvider(init: ProviderConfiguration.() -> Unit) {
    private val config: ProviderConfiguration = ProviderConfiguration().apply(init)
    fun createSocketFactory(protocols: List<String>): SSLSocketFactory = with(createSSLContext(protocols)) {
        return ExtendedSSLSocketFactory(
            socketFactory, protocols.toTypedArray(),
            getOptionalCipherSuites() ?: socketFactory.defaultCipherSuites)
    }
    fun createServerSocketFactory(protocols: List<String>): SSLServerSocketFactory = with(createSSLContext(protocols)) {
        return ExtendedSSLServerSocketFactory(
            serverSocketFactory, protocols.toTypedArray(),
            getOptionalCipherSuites() ?: serverSocketFactory.defaultCipherSuites)
    }
    private fun getOptionalCipherSuites() =
        config.socketConfig?.cipherSuites?.toTypedArray()


    private fun createSSLContext(protocols: List<String>): SSLContext {
       //... already known
    }
}