diff --git a/src/zeroconf/_services/info.py b/src/zeroconf/_services/info.py
index 705f3723..1cae516d 100644
--- a/src/zeroconf/_services/info.py
+++ b/src/zeroconf/_services/info.py
@@ -345,31 +345,27 @@ def _set_text(self, text: bytes) -> None:
def _unpack_text_into_properties(self) -> None:
"""Unpacks the text field into properties"""
text = self.text
- end = len(text)
- if end == 0:
+ if not text:
# Properties should be set atomically
# in case another thread is reading them
self._properties = {}
return
- result: Dict[Union[str, bytes], Optional[Union[str, bytes]]] = {}
index = 0
- strs: List[bytes] = []
+ pairs: List[bytes] = []
+ end = len(text)
while index < end:
length = text[index]
index += 1
- strs.append(text[index : index + length])
+ pairs.append(text[index : index + length])
index += length
- for s in strs:
- key, _, value = s.partition(b'=')
- # Only update non-existent properties
- if key and key not in result:
- result[key] = value or None
-
- # Properties should be set atomically
- # in case another thread is reading them
- self._properties = result
+ # Reverse the list so that the first item in the list
+ # is the last item in the text field. This is important
+ # to preserve backwards compatibility where the first
+ # key always wins if the key is seen multiple times.
+ pairs.reverse()
+ self._properties = {key: value or None for key, _, value in (pair.partition(b'=') for pair in pairs)}
def get_name(self) -> str:
"""Name accessor"""
@@ -476,7 +472,7 @@ def _process_record_threadsafe(self, zc: 'Zeroconf', record: DNSRecord, now: flo
old_server_key = self.server_key
self.name = record.name
self.server = record.server
- self.server_key = record.server.lower()
+ self.server_key = record.server_key
self.port = record.port
self.weight = record.weight
self.priority = record.priority
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