Chore: split component to transport

transport/ssr/protocol/stream.go

@@ -0,0 +1,52 @@
+package protocol
+
+import (
+	"bytes"
+	"net"
+
+	"github.com/Dreamacro/clash/common/pool"
+	"github.com/Dreamacro/clash/transport/ssr/tools"
+)
+
+type Conn struct {
+	net.Conn
+	Protocol
+	decoded      bytes.Buffer
+	underDecoded bytes.Buffer
+}
+
+func (c *Conn) Read(b []byte) (int, error) {
+	if c.decoded.Len() > 0 {
+		return c.decoded.Read(b)
+	}
+
+	buf := pool.Get(pool.RelayBufferSize)
+	defer pool.Put(buf)
+	n, err := c.Conn.Read(buf)
+	if err != nil {
+		return 0, err
+	}
+	c.underDecoded.Write(buf[:n])
+	err = c.Decode(&c.decoded, &c.underDecoded)
+	if err != nil {
+		return 0, err
+	}
+	n, _ = c.decoded.Read(b)
+	return n, nil
+}
+
+func (c *Conn) Write(b []byte) (int, error) {
+	bLength := len(b)
+	buf := tools.BufPool.Get().(*bytes.Buffer)
+	defer tools.BufPool.Put(buf)
+	defer buf.Reset()
+	err := c.Encode(buf, b)
+	if err != nil {
+		return 0, err
+	}
+	_, err = c.Conn.Write(buf.Bytes())
+	if err != nil {
+		return 0, err
+	}
+	return bLength, nil
+}