Merge pull request #666 from canatella/fix-l2cap-signaling-packet-identifiers

Fix L2CAP signaling packet identifiers
2025-04-08 14:49:43 -04:00
parent 220b3b0236 685f1dc43e
commit a8019a70da
1 changed files with 3 additions and 0 deletions
--- a/bumble/l2cap.py
+++ b/bumble/l2cap.py
@@ -1521,6 +1521,9 @@ class ChannelManager:

    def next_identifier(self, connection: Connection) -> int:
        identifier = (self.identifiers.setdefault(connection.handle, 0) + 1) % 256
+        # 0x00 is an invalid ID (BT Core Spec, Vol 3, Part A, Sect 4
+        if identifier == 0:
+            identifier = 1
        self.identifiers[connection.handle] = identifier
        return identifier