mcrxhandler.h

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/*
** Copyright (C) 2004 Russell Leighton
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/


#ifndef __AWHANDLER_MCRX__
#define __AWHANDLER_MCRX__

#include "monitor.h"

#include "wire.h"

#include "bitvector.h"

/*

Changes:


*/

#include "monitor.h"
#include "wire.h"

#include "mctxrx.h"

typedef struct {

  aw_event_sig_t
   received,              /* sucessfully received file */
   error;                 /* error receiving file */

} aw_mcrxhandler_events_t;

typedef enum {

  AW_MCRXHANDLER_IDLE,               /* not doing anything */
  AW_MCRXHANDLER_READING,            /* reading file from mcaddress */
  AW_MCRXHANDLER_WAIT_RETX,          /* waiting for request for re transmits */

} aw_mcrxhandler_state_cd_t;

typedef struct {

  aw_mcrxhandler_state_cd_t
   state_cd;

  /* tx ip for current transaction id */
  in_addr_t
   xtnip;

  /* current transaction id */
  u_int32_t
   xtnid;

  /* used in timeout_poller */
  aw_address_t
   timeout_event_id;

  int32_t
   file_fd,
   mc_fd,
   retx_fd;

  /* write to this until success */
  byte_t
   tmp_filename[AW_MCTXRX_MAX_PATHLEN+3];

  /* space to read/write packets, max size of a UDP packet */
  byte_t
   message[0xffff]; 
  u_int32_t
   message_size;

  /* bitvector indicating which blocks have not been read (1), if read then 0 */
  aw_bitvector_t
   *unread_blocks;

  u_int32_t
   nblocks_read,
   nblocks_missed;

  int32_t
   last_blockid;

  aw_timestamp_t
   initial_blocktstamp,
   last_blocktstamp;

  /* current file info */
  aw_mctxrx_info_t
   info;

} aw_mcrxhandler_state_t;


typedef struct {

  aw_handler_t 
    handler_header;

  aw_mcrxhandler_state_t
   state;

  aw_mcrxhandler_events_t 
   events;

  /* address of interface to rx multicast packets */
  struct in_addr
   mcast_if_addr;

  /* multicast address to rx packets */
  struct sockaddr_in
   mcast_grp_addr;

  /* max time allowed to succeed per try */
  aw_timestamp_t
   timeout;

  /* the schedule to send sw interrupts to test for timeouts */
  aw_alarm_sched_t
   timeout_sched;

} aw_mcrxhandler_t ;


aw_mcrxhandler_t *aw_create_mcrxhandler(const byte_t *mcaddress,
                                        u_int32_t mcport,
                                        const byte_t *mcinterface,
                                        aw_timestamp_t timeout,
                                        const aw_mcrxhandler_events_t *events,
                                        aw_logger_t *logger
                                        );


#endif

Aware 0.11.1 Copyright (C) 1998-2005 Russell Leighton (russ@elegant-software.com)