final NHttpMessageWriterFactory<HttpRequest> requestWriterFactory,
final ByteBufferAllocator allocator,
final ConnectionConfig config) {
this(new DefaultNHttpClientConnectionFactory(
responseParserFactory, requestWriterFactory, allocator, config),
new SSLNHttpClientConnectionFactory(
sslcontext, sslHandler, responseParserFactory, requestWriterFactory,
allocator, config));
}