release/src/router/udpxy/netop.h

   1 /* @(#) interface to network operations for udpxy
   2  *
   3  * Copyright 2008-2011 Pavel V. Cherenkov (pcherenkov@gmail.com) (pcherenkov@gmail.com)
   4  *
   5  *  This file is part of udpxy.
   6  *
   7  *  udpxy is free software: you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation, either version 3 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  udpxy is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with udpxy.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #ifndef NETOP_UDPXY_0313082217_
  22 #define NETOP_UDPXY_0313082217_
  23
  24 #include <sys/types.h>
  25
  26 struct in_addr;
  27 struct sockaddr_in;
  28
  29 #ifdef __cplusplus
  30 extern "C" {
  31 #endif
  32
  33 /* set up (server) listening sockfd
  34  */
  35 int
  36 setup_listener( const char* ipaddr, int port, int* sockfd, int bklog );
  37
  38
  39 /* set up the socket to receive multicast data
  40  *
  41  */
  42 int
  43 setup_mcast_listener( struct sockaddr_in*   sa,
  44                       const struct in_addr* mifaddr,
  45                       int*                  mcastfd,
  46                       int                   sockbuflen );
  47
  48
  49 /* unsubscribe from multicast and close the reader socket
  50  *
  51  */
  52 void
  53 close_mcast_listener( int msockfd, const struct in_addr* mifaddr );
  54
  55
  56 /* add or drop membership in a multicast group
  57  */
  58 int
  59 set_multicast( int msockfd, const struct in_addr* mifaddr,
  60                int opname );
  61
  62
  63 /* drop from and add into a multicast group
  64  */
  65 int
  66 renew_multicast( int msockfd, const struct in_addr* mifaddr );
  67
  68
  69 /* set send/receive timeouts on socket(s)
  70  */
  71 int
  72 set_timeouts( int rsock, int ssock,
  73         u_short rcv_tmout_sec, u_short rcv_tmout_usec,
  74         u_short snd_tmout_sec, u_short snd_tmout_usec );
  75
  76
  77 /* set socket's send buffer value
  78  */
  79 int
  80 set_sendbuf( int sockfd, const size_t len );
  81
  82
  83 /* set socket's send buffer value
  84  */
  85 int
  86 set_rcvbuf( int sockfd, const size_t len );
  87
  88
  89 /* get socket's send buffer size
  90  */
  91 int
  92 get_sendbuf( int sockfd, size_t* const len );
  93
  94
  95 /* get socket's send buffer size
  96  */
  97 int
  98 get_rcvbuf( int sockfd, size_t* const len );
  99
 100
 101 /* set/clear file/socket's mode as non-blocking
 102  */
 103 int
 104 set_nblock( int fd, int set );
 105
 106 /* retrieve string address, int port of local/remote
 107    end of the socket
 108  */
 109 int
 110 get_sockinfo (int sockfd, char* addr, size_t alen, int* port);
 111 int
 112 get_peerinfo (int sockfd, char* addr, size_t alen, int* port);
 113
 114 #ifdef __cplusplus
 115 }
 116 #endif
 117
 118
 119 #endif /* NETOP_UDPXY_0313082217_ */
 120
 121
 122 /* __EOF__ */
 123