Remove legacy buffer header

Author: nekohasekai

common/buf/buffer.go

@@ -11,8 +11,6 @@ import (
 	E "github.com/sagernet/sing/common/exceptions"
 )
 
-const ReversedHeader = 1024
-
 type Buffer struct {
 	data    []byte
 	start   int
@@ -25,17 +23,13 @@ type Buffer struct {
 func New() *Buffer {
 	return &Buffer{
 		data:    Get(BufferSize),
-		start:   ReversedHeader,
-		end:     ReversedHeader,
 		managed: true,
 	}
 }
 
 func NewPacket() *Buffer {
 	return &Buffer{
 		data:    Get(UDPBufferSize),
-		start:   ReversedHeader,
-		end:     ReversedHeader,
 		managed: true,
 	}
 }
@@ -277,13 +271,13 @@ func (b *Buffer) Resize(start, end int) {
 }
 
 func (b *Buffer) Reset() {
-	b.start = ReversedHeader
-	b.end = ReversedHeader
+	b.start = 0
+	b.end = 0
 }
 
+// Deprecated: use Reset instead.
 func (b *Buffer) FullReset() {
-	b.start = 0
-	b.end = 0
+	b.Reset()
 }
 
 func (b *Buffer) IncRef() {

common/bufio/buffer.go

@@ -37,7 +37,7 @@ func (w *BufferedWriter) Write(p []byte) (n int, err error) {
 		if err != nil {
 			return
 		}
-		w.buffer.FullReset()
+		w.buffer.Reset()
 	}
 }
 

common/bufio/chunk.go

@@ -30,7 +30,7 @@ func (c *ChunkReader) ReadBuffer(buffer *buf.Buffer) error {
 	} else if !c.cache.IsEmpty() {
 		return common.Error(buffer.ReadFrom(c.cache))
 	}
-	c.cache.FullReset()
+	c.cache.Reset()
 	err := c.upstream.ReadBuffer(c.cache)
 	if err != nil {
 		c.cache.Release()
@@ -46,7 +46,7 @@ func (c *ChunkReader) Read(p []byte) (n int, err error) {
 	} else if !c.cache.IsEmpty() {
 		return c.cache.Read(p)
 	}
-	c.cache.FullReset()
+	c.cache.Reset()
 	err = c.upstream.ReadBuffer(c.cache)
 	if err != nil {
 		c.cache.Release()
@@ -70,7 +70,7 @@ func (c *ChunkReader) ReadChunk() (*buf.Buffer, error) {
 	} else if !c.cache.IsEmpty() {
 		return c.cache, nil
 	}
-	c.cache.FullReset()
+	c.cache.Reset()
 	err := c.upstream.ReadBuffer(c.cache)
 	if err != nil {
 		c.cache.Release()

common/uot/server.go

@@ -77,7 +77,7 @@ func (c *ServerConn) loopInput() {
 		if err != nil {
 			break
 		}
-		buffer.FullReset()
+		buffer.Reset()
 		_, err = buffer.ReadFullFrom(c.inputReader, int(length))
 		if err != nil {
 			break
@@ -95,7 +95,7 @@ func (c *ServerConn) loopOutput() {
 	buffer := buf.NewPacket()
 	defer buffer.Release()
 	for {
-		buffer.FullReset()
+		buffer.Reset()
 		n, addr, err := buffer.ReadPacketFrom(c)
 		if err != nil {
 			break