18956 FIX Fix crash if remote site is not alive

CMK-32626

Change-Id: I863c266a15a9d6ad62182a28a9b910b28ebf951e

Author: Shortfinga

.werks/18956.md

@@ -0,0 +1,16 @@
+[//]: # (werk v2)
+# Fix crash if remote site is not alive
+
+key        | value
+---------- | ---
+date       | 2026-04-09T06:49:06+00:00
+version    | 2.4.0p26
+class      | fix
+edition    | cre
+component  | livestatus
+level      | 1
+compatible | yes
+
+If the Livestatus service on a remote site was not running, the central site encountered a problem during the connection teardown, which led to "Internal Server Errors".
+
+When running liveproxy, this issue did not occur, and the connection teardown proceeded without errors.

packages/cmk-livestatus-client/cmk/livestatus_client/__init__.py

@@ -672,7 +672,7 @@ def disconnect(self) -> None:
     def _close_socket(self) -> None:
         if self.socket is not None:
             if isinstance(self.socket, ssl.SSLSocket):
-                with contextlib.suppress(ssl.SSLError):
+                with contextlib.suppress(ssl.SSLError, OSError):
                     self.socket = self.socket.unwrap()
 
             with contextlib.suppress(OSError):