reduce memory usage

lxzan · lxzan · commit f3987c6480c2 · 2023-08-11T09:09:09.000+08:00
diff --git a/internal/utils.go b/internal/utils.go
@@ -1,13 +1,11 @@
 package internal
 
 import (
-	"bufio"
 	"bytes"
 	"crypto/sha1"
 	"encoding/base64"
 	"encoding/binary"
 	"io"
-	"net/http"
 	"reflect"
 	"strings"
 	"unsafe"
@@ -212,19 +210,3 @@ func ResetBuffer(b *bytes.Buffer, p []byte) {
 	buffer := (*Buffer)(unsafe.Pointer(b))
 	buffer.buf = p
 }
-
-//go:nosplit
-func ClearHttpWriter(w http.ResponseWriter) {
-	wv := reflect.ValueOf(w).Elem()
-	if wv.Type().Name() == "response" {
-		if conn := wv.FieldByName("conn"); conn.CanAddr() {
-			conn = conn.Elem()
-			if bufw := conn.FieldByName("bufw"); bufw.CanAddr() {
-				*(*bufio.Writer)(bufw.UnsafePointer()) = bufio.Writer{}
-			}
-			if bufr := conn.FieldByName("bufr"); bufr.CanAddr() {
-				*(*bufio.Reader)(bufr.UnsafePointer()) = bufio.Reader{}
-			}
-		}
-	}
-}
diff --git a/updrader.go b/updrader.go
@@ -77,7 +77,6 @@ func (c *Upgrader) hijack(w http.ResponseWriter) (net.Conn, *bufio.Reader, error
 	if err != nil {
 		return nil, nil, err
 	}
-	internal.ClearHttpWriter(w)
 	return netConn, bufio.NewReaderSize(netConn, c.option.ReadBufferSize), nil
 }
 

Original file line number	Diff line number	Diff line change
`@@ -77,7 +77,6 @@ func (c Upgrader) hijack(w http.ResponseWriter) (net.Conn, bufio.Reader, error`
`77`	`77`	`if err != nil {`
`78`	`78`	`return nil, nil, err`
`79`	`79`	`}`
`80`		`- internal.ClearHttpWriter(w)`
`81`	`80`	`return netConn, bufio.NewReaderSize(netConn, c.option.ReadBufferSize), nil`
`82`	`81`	`}`
`83`	`82`