def test_unpack_header_extensions(self):
# none
self.assertEqual(unpack_header_extensions(0, None), [])
# one-byte, single value
self.assertEqual(unpack_header_extensions(0xBEDE, b'\x900\x00\x00'), [
(9, b'0'),
])
# one-byte, two values
self.assertEqual(
unpack_header_extensions(0xBEDE, b'\x10\xc18sdparta_0'), [
(1, b'\xc1'),
(3, b'sdparta_0'),
])
# two-byte, single value
self.assertEqual(unpack_header_extensions(0x1000, b'\xff\x010\x00'), [
(255, b'0'),
])
def test_unpack_header_extensions(self):
# none
self.assertEqual(unpack_header_extensions(0, None), [])
# one-byte, value
self.assertEqual(unpack_header_extensions(0xBEDE, b"\x900"),
[(9, b"0")])
# one-byte, value, padding, value
self.assertEqual(
unpack_header_extensions(0xBEDE, b"\x900\x00\x00\x301"),
[(9, b"0"), (3, b"1")],
)
# one-byte, value, value
self.assertEqual(
unpack_header_extensions(0xBEDE, b"\x10\xc18sdparta_0"),
[(1, b"\xc1"), (3, b"sdparta_0")],
)
# two-byte, value
self.assertEqual(unpack_header_extensions(0x1000, b"\xff\x010"),
[(255, b"0")])
# two-byte, value (1 byte), padding, value (2 bytes)
self.assertEqual(
unpack_header_extensions(0x1000, b"\xff\x010\x00\xf0\x0212"),
[(255, b"0"), (240, b"12")],
)
def test_unpack_header_extensions(self):
# none
self.assertEqual(unpack_header_extensions(0, None), [])
# one-byte, value
self.assertEqual(unpack_header_extensions(0xBEDE, b'\x900'), [
(9, b'0'),
])
# one-byte, value, padding, value
self.assertEqual(unpack_header_extensions(0xBEDE, b'\x900\x00\x00\x301'), [
(9, b'0'),
(3, b'1'),
])
# one-byte, value, value
self.assertEqual(unpack_header_extensions(0xBEDE, b'\x10\xc18sdparta_0'), [
(1, b'\xc1'),
(3, b'sdparta_0'),
])
# two-byte, value
self.assertEqual(unpack_header_extensions(0x1000, b'\xff\x010'), [
(255, b'0'),
])
# two-byte, value (1 byte), padding, value (2 bytes)
self.assertEqual(unpack_header_extensions(0x1000, b'\xff\x010\x00\xf0\x0212'), [
(255, b'0'),
(240, b'12'),
])
def test_unpack_header_extensions_bad(self):
# one-byte, value (truncated)
with self.assertRaises(ValueError) as cm:
unpack_header_extensions(0xBEDE, b'\x90')
self.assertEqual(str(cm.exception), 'RTP one-byte header extension value is truncated')
# two-byte (truncated)
with self.assertRaises(ValueError) as cm:
unpack_header_extensions(0x1000, b'\xff')
self.assertEqual(str(cm.exception), 'RTP two-byte header extension is truncated')
# two-byte, value (truncated)
with self.assertRaises(ValueError) as cm:
unpack_header_extensions(0x1000, b'\xff\x020')
self.assertEqual(str(cm.exception), 'RTP two-byte header extension value is truncated')
