For example, the packet library detects the TCP payload type by using
the TCP src/dst port, but in case of the BGP packet, the packet
library will try to parse a TCP ACK packet as a BGP packet, and will
fail to parse.
This patch enables to ignore an empty buffer and fixes this problem.
Signed-off-by: IWASE Yusuke <iwase.yusu...@gmail.com>
---
ryu/lib/packet/packet.py | 3 +++
1 file changed, 3 insertions(+)
diff --git a/ryu/lib/packet/packet.py b/ryu/lib/packet/packet.py
index 043dae7..7de24c1 100644
--- a/ryu/lib/packet/packet.py
+++ b/ryu/lib/packet/packet.py
@@ -69,6 +69,9 @@ class Packet(StringifyMixin):
def _parser(self, cls):
rest_data = self.data
while cls:
+ # Ignores an empty buffer
+ if not six.binary_type(rest_data).strip(b'\x00'):
+ break
try:
proto, cls, rest_data = cls.parser(rest_data)
except struct.error:
--
2.7.4
------------------------------------------------------------------------------
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