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 * This file is part of the Sofia-SIP package
 * Copyright (C) 2005 Nokia Corporation.
 * Contact: Pekka Pessi <pekka.pessi@nokia.com>
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA

/** Defined when <sofia-sip/tport_plugins.h> has been included. */

/**@file sofia-sip/tport_plugins.h
 * @brief Transport plugin interface
 * @author Pekka Pessi <Pekka.Pessi@nokia.com>
 * @date Created: Fri Mar 31 12:22:22 EEST 2006 ppessi

/* -- STUN Plugin ------------------------------------------------------- */

#define TPORT_STUN_SERVER_T struct tport_stun_server_s
/** Safe type for tport server object */
00043 typedef TPORT_STUN_SERVER_T tport_stun_server_t;

typedef struct {
  int vst_size;
  tport_stun_server_t *(*vst_create)(su_root_t *root, tagi_t const *tags);
  void (*vst_destroy)(tport_stun_server_t *);
  int (*vst_add_socket)(tport_stun_server_t *, su_socket_t socket);
  int (*vst_remove_socket)(tport_stun_server_t *, su_socket_t socket);
  void (*vst_request)(tport_stun_server_t *server, su_socket_t socket,
                 void *msg, ssize_t msglen,
                 void *addr, socklen_t addrlen);
} tport_stun_server_vtable_t;

SOFIAPUBFUN int tport_plug_in_stun_server(tport_stun_server_vtable_t const *);

/* -- SigComp Plugin ---------------------------------------------------- */

/* We already use these SigComp types in applications */

struct sigcomp_udvm;
struct sigcomp_compartment;

typedef struct tport_comp_vtable_s tport_comp_vtable_t;

struct tport_comp_vtable_s {
  /* NOTE: this will change! Unstable! Do not use! */
  int vsc_size;

  char const *vsc_compname;
  size_t vsc_sizeof_context;

  int (*vsc_init_comp)(tp_stack_t *,
                   tport_t *,
                   tport_compressor_t *,
                   char const *comp_name,
                   tagi_t const *tags);

  void (*vsc_deinit_comp)(tp_stack_t *,
                    tport_t *,
                    tport_compressor_t *);

  char const *(*vsc_comp_name)(tport_compressor_t const *master_sc,
                         char const *compression,
                         tagi_t const *tags);

  /* Mapping of public tport API */

  int (*vsc_can_send_comp)(tport_compressor_t const *);
  int (*vsc_can_recv_comp)(tport_compressor_t const *);

  int (*vsc_set_comp_name)(tport_t const *self, 
                     tport_compressor_t const *return_sc,
                     char const *comp);

  int (*vsc_sigcomp_option)(tport_t const *self,
                      struct sigcomp_compartment *cc,
                      char const *option);

  struct sigcomp_compartment *
  (*vsc_sigcomp_compartment)(tport_t *self,
                       char const *name, int namelen,
                       int create_if_needed);

  struct sigcomp_compartment * 
  (*vsc_compartment_incref)(struct sigcomp_compartment *cc);

  void (*vsc_compartment_decref)(struct sigcomp_compartment **pointer_to_cc);

  int (*vsc_set_compartment)(tport_t *self,
                       tport_compressor_t *,
                       struct sigcomp_compartment *);

  struct sigcomp_compartment *
  (*vsc_get_compartment)(tport_t const *self,
                   tport_compressor_t const *);

  int (*vsc_has_sigcomp_assigned)(tport_compressor_t const *comp);

  int (*vsc_sigcomp_accept)(tport_t *self,
                      tport_compressor_t const *comp,
                      struct sigcomp_compartment *cc,
                      msg_t *msg);

  int (*vsc_delivered_using_udvm)(tport_t *tp,
                          msg_t const *msg,
                          struct sigcomp_udvm **return_pointer_to_udvm,
                          int remove);

  int (*vsc_sigcomp_close)(tport_t *self,
                     struct sigcomp_compartment *cc,
                     int how);

  int (*vsc_sigcomp_lifetime)(tport_t *self,
                        struct sigcomp_compartment *,
                        unsigned lifetime_in_ms,
                        int only_expand);

  /* Internal API */

  struct sigcomp_udvm **(*vsc_get_udvm_slot)(tport_t *self);

  struct sigcomp_compartment *
  (*vsc_sigcomp_assign_if_needed)(tport_t *self,
                          struct sigcomp_compartment *cc);

  void (*vsc_accept_incomplete)(tport_t const *self, 
                        tport_compressor_t *sc,
                        msg_t *msg);

  int (*vsc_recv_comp)(tport_t const *self, 
                   tport_compressor_t *sc,
                   msg_t **in_out_msg,
                   su_sockaddr_t *from,
                   socklen_t fromlen);

  ssize_t (*vsc_send_comp)(tport_t const *self,
                   msg_t *msg, 
                   msg_iovec_t iov[], 
                   size_t iovused,
                   struct sigcomp_compartment *cc,
                   tport_compressor_t *sc);


SOFIAPUBFUN int tport_plug_in_comp(tport_comp_vtable_t const *);

#endif /* !defined(TPORT_PLUGINS_H) */

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