Re: "Protocol error" on ldap_simple_bind_s

[Pierangelo Masarati <ando@sys-net.it>]

Pupeno wrote:

> On Sunday 11 September 2005 16:05, Pupeno wrote:
>  
>
> > Hello,
> > I am making an LDAP client using OpenLDAP's libldap[1], I run ldap_open,
> > which returns a pointer and when I run ldap_simple_bind_s, I get that
> > error: "Protocol error".
> > I remember reading somewhere that the API defaulted to LDAPv2 while the
> > server is running LDAPv3, but I can't find that anymore.
> > Any help as to what is going wrong is appretiated.
> >    
> Yes, it is that:
> Sep 11 16:31:08 movlab slapd[9702]: conn=6 fd=13 ACCEPT from 
> IP=127.0.0.1:40821 (IP=0.0.0.0:389)
> Sep 11 16:31:08 movlab slapd[29552]: conn=6 op=0 BIND 
> dn="cn=Manager,dc=movlab,dc=pupeno,dc=com" method=128
> Sep 11 16:31:08 movlab slapd[29552]: conn=6 op=0 RESULT tag=97 err=2 
> text=historical protocol version requested, use LDAPv3 instead
>
> consulting man ldap I see: "A session handle is created using 
> ldap_initialize(3) and set the protocol version to 3 by calling 
> ldap_set_option(3)"
> ldap_initialize is now replaced by ldap_init or the better ldap_open, but I 
> can't find what replaces ldap_set_option, does anybody know that ?
>  
Nothing.  You need to use ldap_set_option(3) to select the protocol 
version.  I suggest you look into the code of ldap tools 
(clients/tools/*.c) and significantly in clients/tools/common.c to see 
how they deal with setting the requested protocol version.  The protocol 
can either be explicitly selected by using the "-P" switch, or 
implicitly selected by selecting features that are LDAPv3 only, like 
SASL bind or LDAP controls.

p.


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