diff --git a/nur_src/ldap/LdapConn.php b/nur_src/ldap/LdapConn.php
index 67c4b2a..f8f56f5 100644
--- a/nur_src/ldap/LdapConn.php
+++ b/nur_src/ldap/LdapConn.php
@@ -133,6 +133,27 @@ class LdapConn extends Parametrable implements ICloseable {
     $this->conn = $this->tryConnect($binddn, $password, $controls, $this->conn);
   }
 
+  /**
+   * se reconnecter, mais seulement s'il y a une erreur sur la connection
+   *
+   * @return true si la reconnexion a effectivement eu lieu
+   */
+  function reconnect(bool $force=false): bool {
+    if (!$force) {
+      try {
+        $this->_search(null, [
+          "attrs" => ["objectClass"],
+          "scope" => "base",
+          "suffix" => "",
+        ])->first();
+      } catch (LdapException $e) {
+        $force = true;
+      }
+    }
+    if ($force) $this->connect();
+    return $force;
+  }
+
   /** @return resource */
   protected function conn() {
     if ($this->conn === null) $this->connect();
diff --git a/nur_src/ldap/LdapSearch.php b/nur_src/ldap/LdapSearch.php
index 82e4047..33d8805 100644
--- a/nur_src/ldap/LdapSearch.php
+++ b/nur_src/ldap/LdapSearch.php
@@ -132,6 +132,7 @@ class LdapSearch extends Parametrable implements IteratorAggregate {
   /** @var array */
   protected $ppControls;
 
+  /** @throws LdapException */
   function getIterator() {
     $conn = $this->conn;
     $args = [$conn];
@@ -161,12 +162,12 @@ class LdapSearch extends Parametrable implements IteratorAggregate {
     $rr = LdapException::check("search", $conn, $rr);
 
     try {
-      $er = ldap_first_entry($conn, $rr);
+      $er = LdapException::check("first_entry", $conn, ldap_first_entry($conn, $rr));
       while ($er !== false) {
         $dn = ldap_get_dn($conn, $er);
         $entry = ldap_get_attributes($conn, $er);
         yield $dn => $entry;
-        $er = ldap_next_entry($conn, $er);
+        $er = LdapException::check("next_entry", $conn, ldap_next_entry($conn, $er));
       }
     } catch (StopException $e) {
     } finally {
@@ -177,6 +178,8 @@ class LdapSearch extends Parametrable implements IteratorAggregate {
   /**
    * retourner la première entrée du résultat de la recherche ou null si la
    * recherche ne retourne aucun résultat
+   *
+   * @throws LdapException
    */
   function first(?string &$dn=null): ?array {
     $it = $this->getIterator();