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force tcp_mss in range (500, 1500]

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破娃酱 2017-04-29 02:46:25 +08:00
parent f3a3ab4b84
commit f5f4bd0339
2 changed files with 4 additions and 2 deletions
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2
shadowsocks/obfsplugin/auth.py
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@ -501,7 +501,7 @@ class auth_aes128_sha1(auth_base):
def rnd_data_len(self, buf_size, full_buf_size): def rnd_data_len(self, buf_size, full_buf_size):
if full_buf_size >= self.server_info.buffer_size: if full_buf_size >= self.server_info.buffer_size:
return 0 return 0
tcp_mss = self.server_info.tcp_mss if self.server_info.tcp_mss < 1500 else 1500 tcp_mss = self.server_info.tcp_mss
rev_len = tcp_mss - buf_size - 9 rev_len = tcp_mss - buf_size - 9
if rev_len == 0: if rev_len == 0:
return 0 return 0

4
shadowsocks/tcprelay.py
View file

@ -248,7 +248,9 @@ class TCPRelayHandler(object):
def _update_tcp_mss(self, local_sock): def _update_tcp_mss(self, local_sock):
self._tcp_mss = TCP_MSS self._tcp_mss = TCP_MSS
try: try:
self._tcp_mss = local_sock.getsockopt(socket.SOL_TCP, socket.TCP_MAXSEG) tcp_mss = local_sock.getsockopt(socket.SOL_TCP, socket.TCP_MAXSEG)
if tcp_mss > 500 and tcp_mss <= 1500:
self._tcp_mss = tcp_mss
logging.debug("TCP MSS = %d" % (self._tcp_mss,)) logging.debug("TCP MSS = %d" % (self._tcp_mss,))
except: except:
pass pass