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	kcp: add some default settings to kcp conn (to improve the speed)
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				@ -162,12 +162,19 @@ func (s *KCP) ListenAndServe() {
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	log.F("[kcp] listening on %s", s.addr)
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	for {
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		c, err := l.Accept()
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		c, err := l.AcceptKCP()
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		if err != nil {
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			log.F("[kcp] failed to accept: %v", err)
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			continue
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		}
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		c.SetStreamMode(true)
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		c.SetWriteDelay(false)
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		c.SetNoDelay(0, 30, 2, 1)
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		c.SetWindowSize(1024, 1024)
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		c.SetMtu(1350)
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		c.SetACKNoDelay(true)
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		go s.Serve(c)
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	}
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}
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@ -197,6 +204,17 @@ func (s *KCP) Dial(network, addr string) (net.Conn, error) {
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		return nil, err
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	}
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	c.SetStreamMode(true)
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	c.SetWriteDelay(false)
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	c.SetNoDelay(0, 30, 2, 1)
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	c.SetWindowSize(1024, 1024)
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	c.SetMtu(1350)
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	c.SetACKNoDelay(true)
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	c.SetDSCP(0)
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	c.SetReadBuffer(4194304)
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	c.SetWriteBuffer(4194304)
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	return c, err
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}
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@ -189,7 +189,7 @@ func clientHello() *bytes.Buffer {
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	// https://github.com/shadowsocks/simple-obfs/blob/7659eeccf473aa41eb294e92c32f8f60a8747325/src/obfs_tls.c#L57
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	// Cipher Suites Length: 56
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	buf.Write([]byte{0x00, 0x38})
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	binary.Write(buf, binary.BigEndian, uint16(56))
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	// Cipher Suites (28 suites)
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	buf.Write([]byte{
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		0xc0, 0x2c, 0xc0, 0x30, 0x00, 0x9f, 0xcc, 0xa9, 0xcc, 0xa8, 0xcc, 0xaa, 0xc0, 0x2b, 0xc0, 0x2f,
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