mdw@git.distorted.org.uk Git - adns/blob - src/adns-internal.h

   1 /**/
   2
   3 #ifndef ADNS_INTERNAL_H_INCLUDED
   4 #define ADNS_INTERNAL_H_INCLUDED
   5
   6 #include <sys/time.h>
   7
   8 #include "adns.h"
   9
  10 #define MAXSERVERS 5
  11 #define MAXUDPRETRIES 10
  12 #define UDPRETRYMS 2000
  13 #define TCPMS 20000
  14
  15 struct adns__query {
  16   adns_query next, back;
  17   adns_query parent, child;
  18   adns_rrtype type;
  19   adns_answer *answer;
  20   int id, flags, udpretries, nextserver;
  21   unsigned long sentudp, senttcp; /* bitmaps indexed by server */
  22   struct timeval timeout;
  23   void *context;
  24   unsigned char *querymsg;
  25   int querylen;
  26   char owner[1];
  27   /* Possible states:
  28    *  Queue   child  answer   nextserver  sentudp             senttcp
  29    *  input   null   null     0           all bits zero       all bits zero
  30    *  timew   null   null     any         at least 1 bit set  any
  31    *  childw  set    partial  any         any                 any
  32    *  output  null   set      any         any                 any
  33    */
  34 };
  35
  36 struct adns__state {
  37   adns_initflags iflags;
  38   struct { adns_query head, tail; } input, timew, childw, output;
  39   int nextid, udpsocket;
  40   int qbufavail, tcpbufavail, tcpbufused, tcpbufdone;
  41   unsigned char *qbuf, *tcpbuf;
  42   int nservers;
  43   struct server {
  44     struct in_addr addr;
  45     enum { server_disc, server_connecting, server_ok } state;
  46     int tcpsocket;
  47     struct timeval timeout;
  48     struct { adns_query head, tail; } connw;
  49   } servers[MAXSERVERS];
  50 };
  51
  52 #endif