Signed-off-by: Yuichi Ito <[email protected]>
---
ryu/lib/packet/udp.py | 2 +-
ryu/tests/unit/packet/test_udp.py | 10 ++++++++++
2 files changed, 11 insertions(+), 1 deletion(-)
diff --git a/ryu/lib/packet/udp.py b/ryu/lib/packet/udp.py
index e3bf5e5..a960886 100644
--- a/ryu/lib/packet/udp.py
+++ b/ryu/lib/packet/udp.py
@@ -41,7 +41,7 @@ class udp(packet_base.PacketBase):
_PACK_STR = '!HHHH'
_MIN_LEN = struct.calcsize(_PACK_STR)
- def __init__(self, src_port, dst_port, total_length=0, csum=0):
+ def __init__(self, src_port=0, dst_port=0, total_length=0, csum=0):
super(udp, self).__init__()
self.src_port = src_port
self.dst_port = dst_port
diff --git a/ryu/tests/unit/packet/test_udp.py
b/ryu/tests/unit/packet/test_udp.py
index 6418743..40da616 100644
--- a/ryu/tests/unit/packet/test_udp.py
+++ b/ryu/tests/unit/packet/test_udp.py
@@ -94,3 +94,13 @@ class Test_udp(unittest.TestCase):
def test_malformed_udp(self):
m_short_buf = self.buf[1:udp._MIN_LEN]
udp.parser(m_short_buf)
+
+ def test_default_args(self):
+ prev = ipv4(proto=inet.IPPROTO_UDP)
+ u = udp()
+ buf = u.serialize(bytearray(), prev)
+ res = struct.unpack(udp._PACK_STR, buf)
+
+ eq_(res[0], 0)
+ eq_(res[1], 0)
+ eq_(res[2], udp._MIN_LEN)
--
1.7.10.4
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