Re: Facing issues with LDAP_X_OPT_CONNECT_TIMEOUT option.

LDAP_X_OPT_CONNECT_TIMEOUT is applicable only when a new connection
being established. in your case that happens when you execute bind
operation. now i dunno why your LDAP server is changing its IP addr
dynamically and how it does the cleanup but normally you should get
LDAP_SERVER_DOWN from ldap_search_s() if that happens clean. there
were several fixes made to "connection down" handling in libldap
since 5.08 version so you might wanna upgrade to the latest version
and see if LDAP_SERVER_DOWN gets returned straight away or not.

Binod Kumar wrote:
> Hello,
> 
>         "LDAP_X_OPT_CONNECT_TIMEOUT" documentation says that it allows  to 
> control the TCP/IP timeout. But in my sample program this option is not 
> working as expected. I have set the TCP/IP timeout value as 60000 
> millisecond. If IP address of LDAP server gets changed after the successfull 
> bind operation, ldap_search_s() API is returning after 15 minutes of TCP/IP 
> timeout period on linux platforms even if i have set the 
> LDAP_X_OPT_CONNECT_TIMEOUT value with 60000 millisecond..
> Following is the code
> 
> #include <stdio.h>
> #include <stdlib.h>
> #include <string.h>
> #include <time.h>
> #include <ldap.h>
> int main( int argc, char **argv )
> {
>      LDAP *ld;
>      LDAPMessage *result, *e;
>      BerElement *ber;
>      char *a, *dn;
>      char **vals;
>      int rc,i;
>      /* get a handle to an LDAP connection */
>     if ( (ld = ldap_init( "10.88.176.137", 389 )) == NULL )
>    {
>        perror( "ldap_init" );
>        return( 1 );
>     }
>     int    timeout = 60000;
>     if ( ldap_set_option( ld, LDAP_X_OPT_CONNECT_TIMEOUT, &timeout ) != 
> LDAP_SUCCESS )
>     {
>                 rc = ldap_get_lderrno( ld, NULL, NULL);
>                 fprintf( stderr, "ldap_set_option: %s\n", ldap_err2string( 
> rc ) );
>                 ldap_unbind( ld );
>                 return (rc);
>     }
>     /* authenticate to the directory as nobody */
>    if ( ldap_simple_bind_s( ld,"cn=directory manager", "password" ) != 
> LDAP_SUCCESS )
>    {
>               ldap_perror( ld, "ldap_simple_bind_s" );
>               return( 1 );
>    }
>   while(1)
>   {
>           /* search for all entries with surname of Jensen */
>           if ( ldap_search_s( ld, "o=airius.com", 0,"objectclass=*", NULL, 
> 0, &result ) != LDAP_SUCCESS )
>           {
>                 ldap_perror( ld, "ldap_search_s" );
>                 return( 1 );
>           }
>           /* for each entry print out name + all attrs and values */
>           for ( e = ldap_first_entry( ld, result ); e != NULL;e = 
> ldap_next_entry( ld, e ) )
>          {
>                 if ( (dn = ldap_get_dn( ld, e )) != NULL )
>                 {
>                   printf( "dn: %s\n", dn );
>                   ldap_memfree( dn );
>                 }
>                 for ( a = ldap_first_attribute( ld, e, &ber );a != NULL; a = 
> ldap_next_attribute( ld, e, ber ) )
>                  {
>                       if ((vals = ldap_get_values( ld, e, a)) != NULL )
>                      {
>                             for ( i = 0; vals[i] != NULL; i++ )
>                              {
>                                   printf( "%s: %s\n", a, vals[i] );
>                              }
>                             ldap_value_free( vals );
>                       }
>                       ldap_memfree( a );
>                 }
>                 if ( ber != NULL )
>                  {
>                       ldap_ber_free( ber, 0 );
>                  }
>                 printf( "\n" );
>       }//end of outer for loop
>     }//end of while loop
>   ldap_msgfree( result );
>   ldap_unbind( ld );
>   return( 0 );
> }
> 
> I have used LDAP SDK version  5.08. I am using Linux operating system. 
> Please let me know if something is wrong with this program or there is some 
> issue with LDAP_X_OPT_CONNECT_TIMEOUT option.
> Looking forward for help and suggestion in this regard.
> 
> Thanks & Regards
> Binod Kumar 
> 
> 
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