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shadowsocksr
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fix overhead

dev
破娃酱 8 years ago
parent
38ef6a2546
commit
838caa3f1d
1 changed files with 3 additions and 3 deletions
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  1. 6
      shadowsocks/obfsplugin/auth_chain.py

6
shadowsocks/obfsplugin/auth_chain.py
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@ -646,7 +646,7 @@ class auth_chain_b(auth_chain_a):
self.data_size_list = [] self.data_size_list = []
random = xorshift128plus() random = xorshift128plus()
random.init_from_bin(key) random.init_from_bin(key)
list_len = random.next() % 32 + 8; list_len = random.next() % 16 + 4;
for i in range(0, list_len): for i in range(0, list_len):
self.data_size_list.append((int)(random.next() % 1440)) self.data_size_list.append((int)(random.next() % 1440))
self.data_size_list.sort() self.data_size_list.sort()
@ -664,10 +664,10 @@ class auth_chain_b(auth_chain_a):
if buf_size >= 1440: if buf_size >= 1440:
return 0 return 0
random.init_from_bin_len(last_hash, buf_size) random.init_from_bin_len(last_hash, buf_size)
pos = bisect.bisect_left(self.data_size_list, buf_size) pos = bisect.bisect_left(self.data_size_list, buf_size + self.server_info.overhead)
final_pos = pos + random.next() % (len(self.data_size_list) + 1 - pos) final_pos = pos + random.next() % (len(self.data_size_list) + 1 - pos)
if final_pos < len(self.data_size_list): if final_pos < len(self.data_size_list):
return self.data_size_list[final_pos] - buf_size return self.data_size_list[final_pos] - buf_size - self.server_info.overhead
if buf_size > 1300: if buf_size > 1300:
return random.next() % 31 return random.next() % 31

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