text: /******************************************************************************
   *                       ____    _    _____                                   *
   *                      / ___|  / \  |  ___|    C++                           *
   *                     | |     / _ \ | |_       Actor                         *
   *                     | |___ / ___ \|  _|      Framework                     *
   *                      \____/_/   \_|_|                                      *
   *                                                                            *
   * Copyright 2011-2018 Dominik Charousset                                     *
   *                                                                            *
   * Distributed under the terms and conditions of the BSD 3-Clause License or  *
   * (at your option) under the terms and conditions of the Boost Software      *
   * License 1.0. See accompanying files LICENSE and LICENSE_ALTERNATIVE.       *
   *                                                                            *
   * If you did not receive a copy of the license files, see                    *
   * http://opensource.org/licenses/BSD-3-Clause and                            *
   * http://www.boost.org/LICENSE_1_0.txt.                                      *
   ******************************************************************************/
  
  #pragma once
  
  #include "caf/io/datagram_handle.hpp"
  #include "caf/io/network/manager.hpp"
  #include "caf/io/network/receive_buffer.hpp"
  
  namespace caf::io::network {
  
  /// A datagram manager provides callbacks for outgoing
  /// datagrams as well as for error handling.
  class datagram_manager : public manager {
  public:
    ~datagram_manager() override;
  
    /// Called by the underlying I/O device whenever it received data.
    /// @returns `true` if the manager accepts further reads, otherwise `false`.
    virtual bool
    consume(execution_unit*, datagram_handle hdl, receive_buffer& buf)
      = 0;
  
    /// Called by the underlying I/O device whenever it sent data.
    virtual void datagram_sent(execution_unit*, datagram_handle hdl, size_t,
                               byte_buffer buffer)
      = 0;
  
    /// Called by the underlying I/O device to indicate that a new remote
    /// endpoint has been detected, passing in the received datagram.
    /// @returns `true` if the manager accepts further enpoints,
    ///          otherwise `false`.
    virtual bool new_endpoint(receive_buffer& buf) = 0;
  
    /// Get the port of the underlying I/O device.
    virtual uint16_t port(datagram_handle) const = 0;
  
    /// Get the remote address of the underlying I/O device.
    virtual std::string addr(datagram_handle) const = 0;
  };
  
  } // namespace caf::io::network
  