From 9671325c506cc4b7a64b6bb6ea42fddf2e2fa74c Mon Sep 17 00:00:00 2001
From: Ivan <ivan@quad4.io>
Date: Sat, 9 May 2026 19:01:12 -0500
Subject: [PATCH] fix(identity_context): guard inbound stamp cost comparison
 against non-int values

---
 meshchatx/src/backend/identity_context.py | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/meshchatx/src/backend/identity_context.py b/meshchatx/src/backend/identity_context.py
index 2407fe4..f2f5cce 100644
--- a/meshchatx/src/backend/identity_context.py
+++ b/meshchatx/src/backend/identity_context.py
@@ -217,6 +217,14 @@ class IdentityContext:
 
         # Register LXMF delivery identity
         inbound_stamp_cost = self.config.lxmf_inbound_stamp_cost.get()
+        # Enforce max stamp cost when block strangers is enabled on startup
+        if (
+            self.config.block_all_from_strangers.get()
+            and isinstance(inbound_stamp_cost, int)
+            and inbound_stamp_cost < 254
+        ):
+            inbound_stamp_cost = 254
+            self.config.lxmf_inbound_stamp_cost.set(254)
         self.local_lxmf_destination = self.message_router.register_delivery_identity(
             identity=self.identity,
             display_name=self.config.display_name.get(),
@@ -413,6 +421,18 @@ class IdentityContext:
         thread.daemon = True
         thread.start()
 
+        # start background thread for LXMF flood protection cooldown
+        thread = threading.Thread(
+            target=asyncio.run,
+            args=(
+                self.app.lxmf_flood_protection_cooldown_loop(
+                    self.session_id, context=self
+                ),
+            ),
+        )
+        thread.daemon = True
+        thread.start()
+
         # start background thread for auto propagation node selection
         thread = threading.Thread(
             target=asyncio.run,