feature symfony#54604 [Ldap] Improve error reporting during LDAP bind (RoSk0)

This PR was merged into the 7.1 branch.

Discussion
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[Ldap] Improve error reporting during LDAP bind

| Q             | A
| ------------- | ---
| Branch?       | 7.1
| Bug fix?      | no
| New feature?  | yes
| Deprecations? | no
| Issues        |
| License       | MIT

In some rare edge-case where there are issue binding to the LDAP server, for example where the error code doesn't match known error codes in `\Symfony\Component\Ldap\Adapter\ExtLdap\Connection::bind()` it would be very useful to get any additional information available.

Commits
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efeb72b Improve error reporting during LDAP bind

Author: fabpot

src/Symfony/Component/Ldap/Adapter/ExtLdap/Connection.php

@@ -78,7 +78,8 @@ public function bind(?string $dn = null, #[\SensitiveParameter] ?string $passwor
                 case self::LDAP_ALREADY_EXISTS:
                     throw new AlreadyExistsException($error);
             }
-            throw new ConnectionException($error);
+            ldap_get_option($this->connection, LDAP_OPT_DIAGNOSTIC_MESSAGE, $diagnostic_message);
+            throw new ConnectionException($error.' '.$diagnostic_message);
         }
 
         $this->bound = true;

src/Symfony/Component/Ldap/CHANGELOG.md

@@ -1,6 +1,11 @@
 CHANGELOG
 =========
 
+7.1
+---
+
+ * Improve error reporting during LDAP bind
+
 7.0
 ---