From c6a879ddedef611ae81e755886262cd5c78815e0 Mon Sep 17 00:00:00 2001
From: nadoo <287492+nadoo@users.noreply.github.com>
Date: Thu, 13 Dec 2018 00:22:34 +0800
Subject: [PATCH] kcp: add some default settings to kcp conn (to improve the
 speed)

---
 proxy/kcp/kcp.go  | 20 +++++++++++++++++++-
 proxy/obfs/tls.go |  2 +-
 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/proxy/kcp/kcp.go b/proxy/kcp/kcp.go
index 209230f..e404cde 100644
--- a/proxy/kcp/kcp.go
+++ b/proxy/kcp/kcp.go
@@ -162,12 +162,19 @@ func (s *KCP) ListenAndServe() {
 	log.F("[kcp] listening on %s", s.addr)
 
 	for {
-		c, err := l.Accept()
+		c, err := l.AcceptKCP()
 		if err != nil {
 			log.F("[kcp] failed to accept: %v", err)
 			continue
 		}
 
+		c.SetStreamMode(true)
+		c.SetWriteDelay(false)
+		c.SetNoDelay(0, 30, 2, 1)
+		c.SetWindowSize(1024, 1024)
+		c.SetMtu(1350)
+		c.SetACKNoDelay(true)
+
 		go s.Serve(c)
 	}
 }
@@ -197,6 +204,17 @@ func (s *KCP) Dial(network, addr string) (net.Conn, error) {
 		return nil, err
 	}
 
+	c.SetStreamMode(true)
+	c.SetWriteDelay(false)
+	c.SetNoDelay(0, 30, 2, 1)
+	c.SetWindowSize(1024, 1024)
+	c.SetMtu(1350)
+	c.SetACKNoDelay(true)
+
+	c.SetDSCP(0)
+	c.SetReadBuffer(4194304)
+	c.SetWriteBuffer(4194304)
+
 	return c, err
 }
 
diff --git a/proxy/obfs/tls.go b/proxy/obfs/tls.go
index 34dbda5..7756bd3 100644
--- a/proxy/obfs/tls.go
+++ b/proxy/obfs/tls.go
@@ -189,7 +189,7 @@ func clientHello() *bytes.Buffer {
 
 	// https://github.com/shadowsocks/simple-obfs/blob/7659eeccf473aa41eb294e92c32f8f60a8747325/src/obfs_tls.c#L57
 	// Cipher Suites Length: 56
-	buf.Write([]byte{0x00, 0x38})
+	binary.Write(buf, binary.BigEndian, uint16(56))
 	// Cipher Suites (28 suites)
 	buf.Write([]byte{
 		0xc0, 0x2c, 0xc0, 0x30, 0x00, 0x9f, 0xcc, 0xa9, 0xcc, 0xa8, 0xcc, 0xaa, 0xc0, 0x2b, 0xc0, 0x2f,