// -*- C++ -*-

//==========================================================================
/**
 *  @file   Sock_Connect.h
 *
 *  $Id$
 *
 *  @author Priyanka Gontla <pgontla@ece.uci.edu>
 *  @author Based on code that existed formerly in ACE.h.
 */
//==========================================================================

#ifndef ACE_SOCK_CONNECT_H
#define ACE_SOCK_CONNECT_H

#include /**/ "ace/pre.h"

#include "ace/ACE_export.h"

#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */

#include "ace/Basic_Types.h"
#include "ace/os_include/netinet/os_in.h"

// Forward Declarations
class ACE_INET_Addr;

class ACE_Export ACE_Sock_Connect
{
 public:

  // = Socket connection establishment calls.

  /// Bind a new unused port to @a handle.
  static int bind_port (ACE_HANDLE handle,
                        ACE_UINT32 ip_addr = INADDR_ANY,
                        int address_family = AF_UNSPEC);

  /**
   * Get our broadcast address based on our @a host_addr.  If
   * @a hostname is non-0 we'll use it to determine our IP address.  If
   * @a handle is not ACE_INVALID_HANDLE then we'll use this to
   * determine our broadcast address, otherwise we'll have to create a
   * socket internally (and free it).  Returns -1 on failure and 0 on
   * success.
   */
  static int get_bcast_addr (ACE_UINT32 &bcast_addr,
                             const ACE_TCHAR *hostname = 0,
                             ACE_UINT32 host_addr = 0,
                             ACE_HANDLE handle = ACE_INVALID_HANDLE);

  /**
   * Return count and array of all configured IP interfaces on this
   * host, rc = 0 on success (count == number of interfaces else -1).
   * Caller is responsible for calling delete [] on @a addr_array.
   */
  static int get_ip_interfaces (size_t &count,
                                ACE_INET_Addr *&addr_array);

  /**
   * Helper routine for get_ip_interfaces, differs by UNIX platform so
   * put into own subroutine.  perform some ioctls to retrieve ifconf
   * list of ifreq structs.
   */
  static int count_interfaces (ACE_HANDLE handle,
                               size_t &how_many);

  /// Routine to return a handle from which @c ioctl requests can be
  /// made.  Caller must close the handle.
  static ACE_HANDLE get_handle (void);

  /**
   * Returns 1 if IPv6 is enabled on the current host; 0 if not.
   * This is an execution-time check. If ACE has not been compiled
   * with ACE_HAS_IPV6, it always returns 0. If ACE_HAS_IPV6 is
   * enabled, this function tries to create a PF_INET6 socket,
   * returning 1 if it succeeds, and 0 if it fails. Caches the result
   * so it only gets checked once.
   */
  static int ipv6_enabled (void);

#if defined (ACE_HAS_IPV6)
private:
  /// Does this box have ipv6 turned on?
  static int ipv6_enabled_;
#endif /* ACE_HAS_IPV6 */
};

#include /**/ "ace/post.h"

#endif  /* ACE_SOCK_CONNECT_H */