2025-12-25 upload

venv/Lib/site-packages/pydivert/packet/udp.py

@@ -0,0 +1,45 @@
+# -*- coding: utf-8 -*-
+# Copyright (C) 2016  Fabio Falcinelli, Maximilian Hils
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+import struct
+
+from pydivert.packet.header import Header, PayloadMixin, PortMixin
+from pydivert.util import PY2, PY34, raw_property
+
+
+class UDPHeader(Header, PayloadMixin, PortMixin):
+    header_len = 8
+
+    @property
+    def payload(self):
+        return PayloadMixin.payload.fget(self)
+
+    @payload.setter
+    def payload(self, val):
+        PayloadMixin.payload.fset(self, val)
+        self.payload_len = len(val)
+
+    if not PY2 and not PY34:
+        payload.__doc__ = PayloadMixin.payload.__doc__
+
+    @property
+    def payload_len(self):
+        return struct.unpack_from("!H", self.raw, 4)[0] - 8
+
+    @payload_len.setter
+    def payload_len(self, val):
+        self.raw[4:6] = struct.pack("!H", val + 8)
+
+    cksum = raw_property('!H', 6, docs='The UDP header checksum field.')