diff --git a/internal/utils/readers/.gitignore b/internal/utils/readers/.gitignore
new file mode 100644
index 0000000..933e364
--- /dev/null
+++ b/internal/utils/readers/.gitignore
@@ -0,0 +1 @@
+readers_concurrent_file*
\ No newline at end of file
diff --git a/internal/utils/readers/reader_concurrent.go b/internal/utils/readers/reader_concurrent.go
deleted file mode 100644
index 2dd9674..0000000
--- a/internal/utils/readers/reader_concurrent.go
+++ /dev/null
@@ -1,135 +0,0 @@
-// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved. Official site: https://goedge.cn .
-
-package readers
-
-import (
-	"errors"
-	"github.com/iwind/TeaGo/types"
-	"io"
-	"sync"
-)
-
-type concurrentSubReader struct {
-	main  *ConcurrentReaderList
-	index int
-}
-
-func (this *concurrentSubReader) Read(p []byte) (n int, err error) {
-	n, err = this.main.readIndex(p, this.index)
-	this.index++
-	return
-}
-
-func (this *concurrentSubReader) Close() error {
-	this.main.removeSubReader(this)
-
-	err := this.main.Close()
-	if err != nil {
-		return err
-	}
-	return nil
-}
-
-// ConcurrentReaderList
-// TODO 动态调整 pieces = pieces[minPieceIndex:] 以节约内存
-type ConcurrentReaderList struct {
-	locker     sync.RWMutex
-	readLocker sync.Mutex
-
-	mainReader   io.ReadCloser
-	subReaderMap map[*concurrentSubReader]bool
-	pieces       [][]byte
-	lastErr      error
-}
-
-func NewConcurrentReaderList(mainReader io.ReadCloser) *ConcurrentReaderList {
-	return &ConcurrentReaderList{
-		mainReader:   mainReader,
-		subReaderMap: map[*concurrentSubReader]bool{},
-	}
-}
-
-func (this *ConcurrentReaderList) NewReader() io.ReadCloser {
-	var subReader = &concurrentSubReader{
-		main: this,
-	}
-	this.locker.Lock()
-	this.subReaderMap[subReader] = true
-	this.locker.Unlock()
-	return subReader
-}
-
-func (this *ConcurrentReaderList) read(p []byte) (n int, err error) {
-	n, err = this.mainReader.Read(p)
-	this.lastErr = err
-
-	if n > 0 {
-		var piece = make([]byte, n)
-		copy(piece, p[:n])
-		this.locker.Lock()
-		this.pieces = append(this.pieces, piece)
-		this.locker.Unlock()
-	}
-
-	return
-}
-
-func (this *ConcurrentReaderList) readIndex(p []byte, index int) (n int, err error) {
-	// 如果已经有数据
-	this.locker.RLock()
-	var countPieces = len(this.pieces)
-	if index < countPieces {
-		var piece = this.pieces[index]
-		this.locker.RUnlock()
-		var pn = len(piece)
-		if len(p) < pn {
-			err = errors.New("invalid buffer length '" + types.String(len(p)) + "' vs '" + types.String(len(piece)) + "'")
-			return
-		}
-		n = pn
-		copy(p, piece)
-		return
-	}
-	this.locker.RUnlock()
-
-	if this.lastErr != nil {
-		return 0, this.lastErr
-	}
-
-	// 如果没有数据，则读取之
-	this.readLocker.Lock()
-
-	// 再次检查数据是否已更新
-	this.locker.RLock()
-	if len(this.pieces) > countPieces || this.lastErr != nil {
-		this.locker.RUnlock()
-		this.readLocker.Unlock()
-		return this.readIndex(p, index)
-	}
-	this.locker.RUnlock()
-
-	// 从原始Reader中读取
-	n, err = this.read(p)
-	this.readLocker.Unlock()
-	if n > 0 {
-		// 重新尝试
-		return this.readIndex(p, index)
-	}
-	return
-}
-
-func (this *ConcurrentReaderList) removeSubReader(subReader *concurrentSubReader) {
-	this.locker.Lock()
-	delete(this.subReaderMap, subReader)
-	this.locker.Unlock()
-}
-
-func (this *ConcurrentReaderList) Close() error {
-	this.locker.Lock()
-	if len(this.subReaderMap) == 0 {
-		this.locker.Unlock()
-		return this.mainReader.Close()
-	}
-	this.locker.Unlock()
-	return nil
-}
diff --git a/internal/utils/readers/reader_concurrent_test.go b/internal/utils/readers/reader_concurrent_test.go
deleted file mode 100644
index 2ac2097..0000000
--- a/internal/utils/readers/reader_concurrent_test.go
+++ /dev/null
@@ -1,81 +0,0 @@
-// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved. Official site: https://goedge.cn .
-
-package readers_test
-
-import (
-	"bytes"
-	"github.com/TeaOSLab/EdgeNode/internal/utils/readers"
-	"io"
-	"sync"
-	"testing"
-	"time"
-)
-
-type testReader struct {
-	t *testing.T
-
-	rawReader io.Reader
-}
-
-func (this *testReader) Read(p []byte) (n int, err error) {
-	time.Sleep(1 * time.Second) // 延迟
-	return this.rawReader.Read(p)
-}
-
-func (this *testReader) Close() error {
-	this.t.Log("close")
-	return nil
-}
-
-func TestNewConcurrentReader(t *testing.T) {
-	var originBuffer = &bytes.Buffer{}
-	originBuffer.Write([]byte("0123456789_hello_world"))
-	var originLength = originBuffer.Len()
-	var concurrentReader = readers.NewConcurrentReaderList(&testReader{
-		t:         t,
-		rawReader: originBuffer,
-	})
-
-	var threads = 32
-	var wg = &sync.WaitGroup{}
-	wg.Add(threads)
-
-	var locker = &sync.Mutex{}
-	var m = map[int][]byte{} // i => []byte
-
-	for i := 0; i < threads; i++ {
-		go func(i int) {
-			defer wg.Done()
-
-			var reader = concurrentReader.NewReader()
-
-			var buf = make([]byte, 4)
-			for {
-				n, err := reader.Read(buf)
-				if n > 0 {
-					locker.Lock()
-					m[i] = append(m[i], buf[:n]...)
-					locker.Unlock()
-					//t.Log(i, string(buf[:n]))
-				}
-				if err != nil {
-					if err == io.EOF {
-						break
-					}
-					t.Log("ERROR:", err)
-				}
-			}
-
-			_ = reader.Close()
-		}(i)
-	}
-
-	wg.Wait()
-
-	for i, b := range m {
-		if len(b) != originLength {
-			t.Fatal("ERROR:", i, string(b))
-		}
-		t.Log(i, string(b))
-	}
-}