// -*- C++ -*-

//=============================================================================
/**
 *  @file    params.h
 *
 *  $Id$
 *
 *  @author Chris Cleeland
 */
//=============================================================================

#ifndef TAO_PARAMS_H
#define TAO_PARAMS_H

#include /**/ "ace/pre.h"
#include "ace/Unbounded_Queue.h"
#include "ace/Array_Map.h"
#include "ace/Synch.h"

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

#include "ace/SString.h"

#include "tao/objectid.h"
#include "tao/CORBA_String.h"

TAO_BEGIN_VERSIONED_NAMESPACE_DECL

// Forward decls.

// @@ Using an ACE_Unbounded_Queue to contain the endpoints and
//    preconnects may not be the best container to use.  However, it
//    will only be used during ORB bootstrapping.  Also, a template
//    instantiation of ACE_Unbounded_Queue<ACE_CString> already exists
//    in ACE so we do not have to worry about increasing TAO's
//    footprint by using this container.
typedef ACE_Unbounded_Queue<ACE_CString> TAO_EndpointSet;
typedef ACE_Unbounded_Queue_Const_Iterator<ACE_CString> TAO_EndpointSetIterator;

// -------------------------------------------------------------------

/**
 * @class TAO_ORB_Parameters
 *
 * @brief Parameters that are specific to the ORB.  These parameters can
 * be for the client, the server, or for both.
 */
class TAO_Export TAO_ORB_Parameters
{
public:

  typedef ACE_Array_Map<ACE_CString, ACE_CString> endpoints_map_type;

  /// Constructor.
  TAO_ORB_Parameters (void);

  /// Specifies the endpoints on which this server is willing to
  /// listen for requests.
  int add_endpoints (const ACE_CString &lane,
                     const ACE_CString &endpoints);
  void get_endpoint_set (const ACE_CString &lane,
                         TAO_EndpointSet &endpoint_set);

  /// Set/Get the port of services locatable through multicast.
  CORBA::UShort service_port (TAO::MCAST_SERVICEID service_id) const;
  void service_port (TAO::MCAST_SERVICEID service_id, CORBA::UShort port);

  /// Get/Set address:port for Multicast Discovery Protocol for
  /// the Naming Service.
  const char *mcast_discovery_endpoint (void) const;
  void mcast_discovery_endpoint (const char *mde);

  /// Set/Get the size to be used for a socket's receive buffer.
  int sock_rcvbuf_size (void) const;
  void sock_rcvbuf_size (int);

  /// Set/Get the size to be used for a socket's send buffer.
  int sock_sndbuf_size (void) const;
  void sock_sndbuf_size (int);

  /// Set/Get the status of whether to use TCP_NODELAY or not.
  int nodelay (void) const;
  void nodelay (int);

  /// Set/Get whether we should set SO_KEEPALIVE on the socket or not.
  int sock_keepalive (void);
  void sock_keepalive (int);

  /// Set/Get whether we should set SO_DONTROUTE on the socket or not.
  int sock_dontroute (void);
  void sock_dontroute (int);

  /**
   * Octet sequences are marshalled without doing any copies, we
   * simply append a block to the CDR message block chain. When the
   * octet sequence is small enough and there is room in the current
   * message block it is more efficient just to copy the buffer.
   */
  int cdr_memcpy_tradeoff (void) const;
  void cdr_memcpy_tradeoff (int);

  /**
   * Maximum size of a GIOP message before outgoing fragmentation
   * kicks in.
   */
  //@{
  ACE_CDR::ULong max_message_size (void) const;
  void max_message_size (ACE_CDR::ULong size);
  //@}

  /// The ORB will use the dotted decimal notation for addresses. By
  /// default we use the full ascii names.
  int use_dotted_decimal_addresses (void) const;
  void use_dotted_decimal_addresses (int);

  /// The ORB will cache incoming connections against the dotted
  /// decimal form of the peer's address
  int cache_incoming_by_dotted_decimal_address (void) const;
  void cache_incoming_by_dotted_decimal_address (int);

  /// The ORB will turn off SO_LINGER if this is zero.
  int linger (void) const;
  void linger (int);

  /// Set/Get the Init Reference of an arbitrary ObjectID.
  char *default_init_ref (void) const;
  void default_init_ref (const char *default_init_ref);

  /// Disable the OMG standard profile components, useful for
  /// homogenous environments.
  int std_profile_components (void) const;
  void std_profile_components (int x);

  /// Scheduling policy.
  /**
   * Scheduling policy specified by the user through the
   * -ORBSchedPolicy option.  This value is typically used by
   * functions like ACE_OS::thr_setprio() and
   * ACE_Sched_Params::priority_min(). Legal values are ACE_SCHED_RR,
   * ACE_SCHED_FIFO, and ACE_SCHED_OTHER.
   */
  int ace_sched_policy (void) const;
  void ace_sched_policy (int x);

  /// Scheduling policy flag.
  /**
   * Scheduling policy specified by the user through the
   * -ORBSchedPolicy option.  This value is typically used by ACE
   * thread creation functions. Legal values are THR_SCHED_RR,
   * THR_SCHED_FIFO, and THR_SCHED_DEFAULT.
   */
  long sched_policy (void) const;
  void sched_policy (long x);

  /// Scheduling scope flag.
  /**
   * Scheduling policy specified by the user through the
   * -ORBScopePolicy option.  This value is typically used by ACE
   * thread creation functions. Legal values are THR_SCOPE_SYSTEM and
   * THR_SCOPE_PROCESS.
   */
  long scope_policy (void) const;
  void scope_policy (long x);

  /// Thread creation flags.
  /**
   * Shorthand for OR'ing together the scope_policy and sched_policy.
   */
  long thread_creation_flags (void) const;

  /// Single read optimization.
  int single_read_optimization (void) const;
  void single_read_optimization (int x);

  /// Create shared profiles without priority
  int shared_profile (void) const;
  void shared_profile (int x);

  /// Want to use parallel connection attempts when profiles have multiple
  /// endpoints.
  bool  use_parallel_connects(void) const;
  void use_parallel_connects (bool x);

  /// The milliseconds delay used to stagger individual connection starts
  /// when using parallel connects.
  unsigned long parallel_connect_delay (void) const;
  void parallel_connect_delay (unsigned long x);

  /// Mutators and accessors for rt_collocation_resolver
  bool disable_rt_collocation_resolver (void) const;
  void disable_rt_collocation_resolver (bool);

  /// Accepts the list of preferred interfaces and does a simple
  /// semantic check on the string
  bool preferred_interfaces (const char *s);
  const char *preferred_interfaces (void) const;

  void enforce_pref_interfaces (bool p);
  bool enforce_pref_interfaces (void) const;

#if defined (ACE_HAS_IPV6)
  void prefer_ipv6_interfaces (bool p);
  bool prefer_ipv6_interfaces (void) const;

  void connect_ipv6_only (bool p);
  bool connect_ipv6_only (void) const;
#endif /* ACE_HAS_IPV6 */

  void negotiate_codesets (bool c);
  bool negotiate_codesets (void) const;

private:
  // Each "endpoint" is of the form:
  //
  //   protocol://V.v@addr1,...,W.w@addrN/
  //
  // or:
  //
  //   protocol://addr1,addr2,...,addrN/
  //
  // where "V.v" and "W.w" are optional versions.
  //
  // Multiple sets of endpoints may be seperated by a semi-colon `;'.
  // For example:
  //
  //   iiop://space:2001,odyssey:2010;uiop://foo,bar
  //
  // All preconnect or endpoint strings should be of the above form(s).
  int parse_and_add_endpoints (const ACE_CString &endpoints,
                               TAO_EndpointSet &endpoint_set);

  /// Map of endpoints this server is willing to accept requests on.
  endpoints_map_type endpoints_map_;

  /// Port numbers of the configured services.
  CORBA::UShort service_port_[TAO_NO_OF_MCAST_SERVICES];

  /// Address:port for Multicast Discovery Protocol for the Naming
  /// Service.
  CORBA::String_var mcast_discovery_endpoint_;

  /// List of comma separated prefixes from ORBDefaultInitRef.
  ACE_CString default_init_ref_;

  /// Size to be used for a socket's receive buffer.
  int sock_rcvbuf_size_;

  /// Size to be used for a socket's send buffer.
  int sock_sndbuf_size_;

  /// 1 if we're using TCP_NODELAY and 0 otherwise.
  int nodelay_;

  /// 1 if we're using SO_KEEPALIVE and 0 otherwise (default 0).
  int sock_keepalive_;

  /// 1 if we're using SO_DONTROUTE and 0 otherwise (default 0).
  int sock_dontroute_;

  /// Control the strategy for copying vs. appeding octet sequences in
  /// CDR streams.
  int cdr_memcpy_tradeoff_;

  /// Maximum GIOP message size to be sent over a given transport.
  /**
   * Setting a maximum message size will cause outgoing GIOP
   * fragmentation to be enabled.
   */
  ACE_CDR::ULong max_message_size_;

  /// For selecting a liteweight version of the GIOP protocol.
  int use_lite_protocol_;

  /// For selecting a address notation
  int use_dotted_decimal_addresses_;

  /// If incoming connections should be cached against IP (true) or
  /// hostname (false).
  int cache_incoming_by_dotted_decimal_address_;

  /// For setting the SO_LINGER option
  int linger_;

  /// If true then the standard OMG components are not generated.
  int std_profile_components_;

  /// Scheduling policy.
  /**
   * Scheduling policy specified by the user through the
   * -ORBSchedPolicy option.  This value is typically used by
   * functions like ACE_OS::thr_setprio() and
   * ACE_Sched_Params::priority_min(). Legal values are ACE_SCHED_RR,
   * ACE_SCHED_FIFO, and ACE_SCHED_OTHER.
   */
  int ace_sched_policy_;

  /// Scheduling policy flag.
  /**
   * Scheduling policy specified by the user through the
   * -ORBSchedPolicy option.  This value is typically used by ACE
   * thread creation functions. Legal values are THR_SCHED_RR,
   * THR_SCHED_FIFO, and THR_SCHED_DEFAULT.
   */
  long sched_policy_;

  /// Scheduling scope flag.
  /**
   * Scheduling policy specified by the user through the
   * -ORBScopePolicy option.  This value is typically used by ACE
   * thread creation functions. Legal values are THR_SCOPE_SYSTEM and
   * THR_SCOPE_PROCESS.
   */
  long scope_policy_;

  /// Single read optimization.
  int single_read_optimization_;

  /// Shared Profile - Use the same profile for multiple endpoints
  int shared_profile_;

  /// Use Parallel Connects - Try to connect to all endpoints in a
  /// shared profile at once, use the first to complete.
  int use_parallel_connects_;

  /// When using parallel connects, this delay is used to stagger connection
  /// attempts. This gives a trade-off between opening more potential
  /// connections than necessary vs increasing the potential time before
  /// a good connection is discovered. Time is expressed in milliseconds.
  unsigned long parallel_connect_delay_;

  /// Preferred network interfaces as a string
  ACE_CString pref_network_;

  /// Default collocation resolver
  /**
   * The vanilla ORB has only one collocation resolver. But if the
   * RTORB is in place, the RTORB can get in a new collocation
   * resolver. There are some applications that would like to use the
   * default collocation resolver with the RTORB. This boolean is the
   * value of the option that the application passes in to enable/disable
   * the use of RT collocation resolver with the RTORB. The default value
   * is false to indicate that the RT_Collocation_Resolver will be
   * loaded if the RTORB is used.
   */
  bool disable_rt_collocation_resolver_;

  bool enforce_preferred_interfaces_;

#if defined (ACE_HAS_IPV6)
  /// Prefer to connect IPv6 over IPv4 Yes or No.
  bool prefer_ipv6_interfaces_;

  /**
   * Only connect to (client) or listen on and accept from (server)
   * IPv6 interfaces Yes or No.
   */
  bool connect_ipv6_only_;
#endif /* ACE_HAS_IPV6 */

  /// Enable the use of codeset negotiation
  bool negotiate_codesets_;
};

TAO_END_VERSIONED_NAMESPACE_DECL

#if defined (__ACE_INLINE__)
# include "tao/params.i"
#endif /* __ACE_INLINE__ */

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

#endif /* TAO_PARAMS_H */