#ifndef BOOST_NETWORK_PROTOCOL_HTTP_IMPL_ASYNC_CONNECTION_BASE_20100529
#define BOOST_NETWORK_PROTOCOL_HTTP_IMPL_ASYNC_CONNECTION_BASE_20100529

// Copryight 2013 Google, Inc.
// Copyright 2010 Dean Michael Berris <dberris@google.com>
// Copyright 2010 (C) Sinefunc, Inc.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)

#include <boost/network/protocol/http/response.hpp>
#include <boost/network/protocol/http/client/connection/connection_delegate_factory.hpp>
#include <boost/network/protocol/http/traits/delegate_factory.hpp>
#include <boost/network/protocol/http/client/connection/async_normal.hpp>

namespace boost { namespace network { namespace http { namespace impl {

  template <class Tag, unsigned version_major, unsigned version_minor>
  struct async_connection_base {
    typedef async_connection_base<Tag,version_major,version_minor> this_type;
    typedef typename resolver_policy<Tag>::type resolver_base;
    typedef typename resolver_base::resolver_type resolver_type;
    typedef typename resolver_base::resolve_function resolve_function;
    typedef typename string<Tag>::type string_type;
    typedef basic_request<Tag> request;
    typedef basic_response<Tag> response;
    typedef iterator_range<char const *> char_const_range;
    typedef function<void(char_const_range const &, system::error_code const &)>
        body_callback_function_type;
    typedef function<bool(string_type&)> body_generator_function_type;
    typedef shared_ptr<this_type> connection_ptr;

    // This is the factory function which constructs the appropriate async
    // connection implementation with the correct delegate chosen based on the
    // tag.
    static connection_ptr new_connection(
        resolve_function resolve,
        resolver_type & resolver,
        bool follow_redirect,
        bool always_verify_peer,
        bool https,
        optional<string_type> certificate_filename=optional<string_type>(),
        optional<string_type> const & verify_path=optional<string_type>(),
        optional<string_type> certificate_file=optional<string_type>(),
        optional<string_type> private_key_file=optional<string_type>()) {
      typedef http_async_connection<Tag,version_major,version_minor>
          async_connection;
      typedef typename delegate_factory<Tag>::type delegate_factory_type;
      connection_ptr temp;
      temp.reset(
          new async_connection(
              resolver,
              resolve,
              follow_redirect,
              delegate_factory_type::new_connection_delegate(
                  resolver.get_io_service(),
                  https,
                  always_verify_peer,
                  certificate_filename,
                  verify_path,
                  certificate_file,
                  private_key_file)));
      BOOST_ASSERT(temp.get() != 0);
      return temp;
    }

    // This is the pure virtual entry-point for all asynchronous connections.
    virtual response start(
        request const & request,
        string_type const & method,
        bool get_body,
        body_callback_function_type callback,
        body_generator_function_type generator) = 0;

    virtual ~async_connection_base() {}

  };

} // namespace impl

} // namespace http

} // namespace network

} // namespace boost

#endif // BOOST_NETWORK_PROTOCOL_HTTP_IMPL_ASYNC_CONNECTION_BASE_20100529
