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Avoid recreating struct each request in legacy protocol (#628)

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This commit is contained in:
J. Nick Koston
2024-01-09 13:51:04 -10:00
committed by GitHub
parent 510aea7207
commit 460054ced7
1 changed files with 3 additions and 2 deletions
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5
kasa/protocol.py
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@@ -31,6 +31,7 @@ from .json import loads as json_loads
_LOGGER = logging.getLogger(__name__)
_NO_RETRY_ERRORS = {errno.EHOSTDOWN, errno.EHOSTUNREACH, errno.ECONNREFUSED}
_UNSIGNED_INT_NETWORK_ORDER = struct.Struct(">I")
def md5(payload: bytes) -> bytes:
@@ -206,7 +207,7 @@ class TPLinkSmartHomeProtocol(TPLinkProtocol):
await self.writer.drain()
packed_block_size = await self.reader.readexactly(self.BLOCK_SIZE)
length = struct.unpack(">I", packed_block_size)[0]
length = _UNSIGNED_INT_NETWORK_ORDER.unpack(packed_block_size)[0]
buffer = await self.reader.readexactly(length)
response = TPLinkSmartHomeProtocol.decrypt(buffer)
@@ -311,7 +312,7 @@ class TPLinkSmartHomeProtocol(TPLinkProtocol):
:return: ciphertext to be send over wire, in bytes
"""
plainbytes = request.encode()
return struct.pack(">I", len(plainbytes)) + bytes(
return _UNSIGNED_INT_NETWORK_ORDER.pack(len(plainbytes)) + bytes(
TPLinkSmartHomeProtocol._xor_payload(plainbytes)
)