Re: Vista/IPv6

Peter Eisentraut wrote:
> Am Mittwoch, 11. April 2007 16:46 schrieb Magnus Hagander:
>   
>> Point being - if you build on a ipv6 enabled machine, will that binary then
>> work at all on a non-ipv6 machine? Consider binaries distributed by the
>> installer... Might as well think up the proper fix before we just band-aid
>> it for the regression tests..
>>     
>
> The check is done by initdb (not on the build machine) and it checks if 
> getaddrinfo("::1", ...) works.  If that doesn't work then you don't have IPv6 
> for all practical purposes.  So everything seems to be set up all right.
>
>   
There is a configure time and a runtime check. The code is below - note 
the first #ifdef.

cheers

andrew

#ifdef HAVE_IPV6
   /*    * Probe to see if there is really any platform support for IPv6, and    * comment out the relevant pg_hba line
ifnot.  This avoids runtime    * warnings if getaddrinfo doesn't actually cope with IPv6.  
 
Particularly    * useful on Windows, where executables built on a machine with IPv6 may    * have to run on a machine
without.   */   {       struct addrinfo *gai_result;       struct addrinfo hints;       int         err = 0;
 

#ifdef WIN32       /* need to call WSAStartup before calling getaddrinfo */       WSADATA     wsaData;
       err = WSAStartup(MAKEWORD(2, 2), &wsaData);
#endif
       /* for best results, this code should match parse_hba() */       hints.ai_flags = AI_NUMERICHOST;
hints.ai_family= PF_UNSPEC;       hints.ai_socktype = 0;       hints.ai_protocol = 0;       hints.ai_addrlen = 0;
hints.ai_canonname= NULL;       hints.ai_addr = NULL;       hints.ai_next = NULL;
 
       if (err != 0 ||           getaddrinfo("::1", NULL, &hints, &gai_result) != 0)           conflines =
replace_token(conflines,                                    "host    all         all         ::1",
              "#host    all         all         
 
::1");   }
#else                           /* !HAVE_IPV6 */   /* If we didn't compile IPV6 support at all, always comment it out
*/  conflines = replace_token(conflines,                             "host    all         all         ::1",
               "#host    all         all         ::1");
 
#endif   /* HAVE_IPV6 */