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packet lib: sctp: change the timing of the auto calculation

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As well as 'length', calculate 'num' automatically at 'serialize()'.

Signed-off-by: Yuichi Ito <ito.yuichi0@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
This commit is contained in:
Yuichi Ito 2013-10-29 18:50:56 +09:00 committed by FUJITA Tomonori
parent 0dca4fda4c
commit 0ced2d9fbc
1 changed files with 3 additions and 2 deletions
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5
ryu/lib/packet/sctp.py
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@ -1319,8 +1319,6 @@ class cause_missing_param(cause):
for one in types:
assert isinstance(one, int)
self.types = types
if 0 == num:
num = len(self.types)
self.num = num
@classmethod
@ -1339,6 +1337,9 @@ class cause_missing_param(cause):
self._PACK_STR, self.cause_code(), self.length, self.num))
for one in self.types:
buf.extend(struct.pack('!H', one))
if 0 == self.num:
self.num = len(self.types)
struct.pack_into('!I', buf, 4, self.num)
if 0 == self.length:
self.length = len(buf)
struct.pack_into('!H', buf, 2, self.length)