iPlanet LDAP and C# PageResultRequestControl

Question

I am trying to do a paged search on an iPlanet LDAP. Here\'s my code:

LdapConnection ldap = new LdapConnection(\"foo.bar.com:389\");
ldap.AuthType = AuthTyp         


        

Answer 1

All LDAP v3 compliant directories must contain a list of OIDs for the controls that the server supports. The list can be accessed by issuing a base-level search with a null/empty search root DN to get the directory server root DSE and reading the multi-value supportedControl-attribute.

The OID for paged search support is 1.2.840.113556.1.4.319.

Here's a code snippet to get you started:

LdapConnection lc = new LdapConnection("ldap.server.name");
// Reading the Root DSE can always be done anonymously, but the AuthType
// must be set to Anonymous when connecting to some directories:
lc.AuthType = AuthType.Anonymous;
using (lc)
{
  // Issue a base level search request with a null search base:
  SearchRequest sReq = new SearchRequest(
    null,
    "(objectClass=*)",
    SearchScope.Base,
    "supportedControl");
  SearchResponse sRes = (SearchResponse)lc.SendRequest(sReq);
  foreach (String supportedControlOID in
    sRes.Entries[0].Attributes["supportedControl"].GetValues(typeof(String)))
  {
    Console.WriteLine(supportedControlOID);
    if (supportedControlOID == "1.2.840.113556.1.4.319")
    {
      Console.WriteLine("PAGING SUPPORTED!");
    }
  }
}

I don't think iPlanet supports paging but that might depend on the version you're using. Newer versions of Sun-made directories seem to support paging. You're probably best off checking your server using the method I've described.