modified: pyproject.toml

Fix paths after restructuring

renamed:    netbox_dns_bridge/management/commands/export-dns-zone.py -> netbox_dns_bridge/management/commands/dns-export-zone.py
renamed:    netbox_dns_bridge/management/commands/export-all-dns-zones.py -> netbox_dns_bridge/management/commands/dns-export-zones.py
Unify command naming scheme

new file:   netbox_dns_bridge/migrations/0001_initial.py
Adds the missing migration. Since the plugin was renamed this is also an opportunity to merge all changes into a single migration.

renamed:    netbox_dns_bridge/service/transfer/catalog_zone_manager.py -> netbox_dns_bridge/catalog_zone_manager.py
renamed:    netbox_dns_bridge/service/transfer/dns_server.py -> netbox_dns_bridge/dns_server.py
new file:   netbox_dns_bridge/management/commands/dns-settings.py
modified:   netbox_dns_bridge/management/commands/dns-transfer-endpoint.py
renamed:    netbox_dns_bridge/service/transfer/request_handler.py -> netbox_dns_bridge/request_handler.py
deleted:    netbox_dns_bridge/service/transfer/__init__.py
Another restructure to simplify code re-use. New command dns-settings added to allow setting of catalog zone serial.
This will be needed to migrate from previous versions.

netbox_dns_bridge/dns_server.py

@@ -0,0 +1,54 @@
+import logging
+import socketserver
+import socket
+
+logger = logging.getLogger(__name__)
+
+class DNSAddressMixin:
+    def _resolve_address(self, server_address, socktype, proto):
+        host, port = server_address
+
+        infos = socket.getaddrinfo(
+            host,
+            port,
+            socket.AF_UNSPEC,
+            socktype,
+            proto,
+            socket.AI_PASSIVE
+        )
+
+        family, _, _, _, sockaddr = infos[0]
+        self.address_family = family
+        return sockaddr
+
+
+class TCPDNSServer(DNSAddressMixin, socketserver.TCPServer):
+    allow_reuse_address = True
+
+    def __init__(self, server_address, handler_class, keyring, tsig_view_map):
+        sockaddr = self._resolve_address(
+            server_address,
+            socket.SOCK_STREAM,
+            socket.IPPROTO_TCP
+        )
+
+        super().__init__(sockaddr, handler_class)
+
+        self.keyring = keyring
+        self.tsig_view_map = tsig_view_map
+
+
+class UDPDNSServer(DNSAddressMixin, socketserver.UDPServer):
+    allow_reuse_address = True
+
+    def __init__(self, server_address, handler_class, keyring, tsig_view_map):
+        sockaddr = self._resolve_address(
+            server_address,
+            socket.SOCK_DGRAM,
+            socket.IPPROTO_UDP
+        )
+
+        super().__init__(sockaddr, handler_class)
+
+        self.keyring = keyring
+        self.tsig_view_map = tsig_view_map