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refine _get_read_size

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This commit is contained in:
破娃酱 2017-05-29 08:42:57 +08:00
parent a3315bcd6a
commit 92722c2ea9
1 changed files with 7 additions and 7 deletions
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14
shadowsocks/tcprelay.py
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@ -832,15 +832,15 @@ class TCPRelayHandler(object):
buffer_size = len(sock.recv(recv_buffer_size, socket.MSG_PEEK))
if up:
buffer_size = min(buffer_size, self._recv_u_max_size)
self._recv_u_max_size = min(self._recv_u_max_size + TCP_MSS, BUF_SIZE)
self._recv_u_max_size = min(self._recv_u_max_size + self._tcp_mss - self._overhead, BUF_SIZE)
else:
buffer_size = min(buffer_size, self._recv_d_max_size)
self._recv_d_max_size = min(self._recv_d_max_size + TCP_MSS, BUF_SIZE)
self._recv_d_max_size = min(self._recv_d_max_size + self._tcp_mss - self._overhead, BUF_SIZE)
if buffer_size == recv_buffer_size:
return buffer_size
s = buffer_size % self._tcp_mss + self._overhead
if s > self._tcp_mss:
return buffer_size - (s - self._tcp_mss)
frame_size = self._tcp_mss - self._overhead
if buffer_size > frame_size:
buffer_size = int(buffer_size / frame_size) * frame_size
return buffer_size
def _on_local_read(self):
@ -1074,7 +1074,7 @@ class TCPRelayHandler(object):
handle = True
self._on_remote_read(sock == self._remote_sock)
else:
self._recv_d_max_size = TCP_MSS
self._recv_d_max_size = self._tcp_mss - self._overhead
elif event & eventloop.POLL_OUT:
handle = True
self._on_remote_write()
@ -1087,7 +1087,7 @@ class TCPRelayHandler(object):
handle = True
self._on_local_read()
else:
self._recv_u_max_size = TCP_MSS
self._recv_u_max_size = self._tcp_mss - self._overhead
elif event & eventloop.POLL_OUT:
handle = True
self._on_local_write()