diff --git a/CHANGELOG.md b/CHANGELOG.md
index 74a19fc..becca9b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,9 +1,16 @@
 # 更新日志
 
+25w28a - 2025-04-14
+---
+- PRE-RELEASE: 此版本是预发布版本,请勿在生产环境中使用;
+- CHANGE: 去除不必要的请求
+- CHANGE: 改进`httpc`相关配置
+- CHANGE: 合入test版本修改
+
 25w28t-2 - 2025-04-11
 ---
 - TEST: 测试验证版本
-- CHANGE: 为老旧的油猴xhr提供兼容性支持, break RFC 2616, RFC 9112
+- CHANGE: 为不遵守`RFC 2616`, `RFC 9112`的客户端带来兼容性改进
 
 25w28t-1 - 2025-04-11
 ---
diff --git a/DEV-VERSION b/DEV-VERSION
index c774704..d219ec2 100644
--- a/DEV-VERSION
+++ b/DEV-VERSION
@@ -1 +1 @@
-25w28t-2
\ No newline at end of file
+25w28a
\ No newline at end of file
diff --git a/main.go b/main.go
index d766a9f..0c6947e 100644
--- a/main.go
+++ b/main.go
@@ -27,7 +27,6 @@ import (
 	"github.com/cloudwego/hertz/pkg/common/hlog"
 
 	//"github.com/cloudwego/hertz/pkg/network/standard"
-
 	"github.com/hertz-contrib/http2/factory"
 )
 
diff --git a/proxy/chunkreq.go b/proxy/chunkreq.go
index dffb6ef..a0a6c6b 100644
--- a/proxy/chunkreq.go
+++ b/proxy/chunkreq.go
@@ -5,7 +5,6 @@ import (
 	"context"
 	"fmt"
 	"ghproxy/config"
-	"io"
 	"net/http"
 	"strconv"
 
@@ -15,39 +14,6 @@ import (
 func ChunkedProxyRequest(ctx context.Context, c *app.RequestContext, u string, cfg *config.Config, matcher string) {
 	method := c.Request.Method
 
-	// 发送HEAD请求, 预获取Content-Length
-	headReq, err := client.NewRequest("HEAD", u, nil)
-	if err != nil {
-		HandleError(c, fmt.Sprintf("Failed to create request: %v", err))
-		return
-	}
-	setRequestHeaders(c, headReq)
-	removeWSHeader(headReq) // 删除Conection Upgrade头, 避免与HTTP/2冲突(检查是否存在Upgrade头)
-	AuthPassThrough(c, cfg, headReq)
-
-	headResp, err := client.Do(headReq)
-	if err != nil {
-		HandleError(c, fmt.Sprintf("Failed to send request: %v", err))
-		return
-	}
-	defer func(Body io.ReadCloser) {
-		if err := Body.Close(); err != nil {
-			logError("Failed to close response body: %v", err)
-		}
-	}(headResp.Body)
-
-	contentLength := headResp.Header.Get("Content-Length")
-	sizelimit := cfg.Server.SizeLimit * 1024 * 1024
-	if contentLength != "" {
-		size, err := strconv.Atoi(contentLength)
-		if err == nil && size > sizelimit {
-			finalURL := headResp.Request.URL.String()
-			c.Redirect(http.StatusMovedPermanently, []byte(finalURL))
-			logWarning("%s %s %s %s %s Final-URL: %s Size-Limit-Exceeded: %d", c.ClientIP(), c.Method(), c.Path(), c.Request.Header.Get("User-Agent"), c.Request.Header.GetProtocol(), finalURL, size)
-			return
-		}
-	}
-
 	body := c.Request.Body()
 
 	bodyReader := bytes.NewBuffer(body)
@@ -69,16 +35,25 @@ func ChunkedProxyRequest(ctx context.Context, c *app.RequestContext, u string, c
 
 	// 错误处理(404)
 	if resp.StatusCode == 404 {
-		c.String(http.StatusNotFound, "File Not Found")
-		//c.Status(http.StatusNotFound)
+		//c.String(http.StatusNotFound, "File Not Found")
+		c.Status(http.StatusNotFound)
 		return
 	}
 
-	var bodySize int
+	var (
+		bodySize      int
+		contentLength string
+		sizelimit     int
+	)
+	sizelimit = cfg.Server.SizeLimit * 1024 * 1024
 	contentLength = resp.Header.Get("Content-Length")
 	if contentLength != "" {
 		var err error
 		bodySize, err = strconv.Atoi(contentLength)
+		if err != nil {
+			logWarning("%s %s %s %s %s Content-Length header is not a valid integer: %v", c.ClientIP(), c.Method(), c.Path(), c.UserAgent(), c.Request.Header.GetProtocol(), err)
+			bodySize = -1
+		}
 		if err == nil && bodySize > sizelimit {
 			finalURL := resp.Request.URL.String()
 			c.Redirect(http.StatusMovedPermanently, []byte(finalURL))
diff --git a/proxy/gitreq.go b/proxy/gitreq.go
index 0826a58..c4f0cfd 100644
--- a/proxy/gitreq.go
+++ b/proxy/gitreq.go
@@ -72,6 +72,9 @@ func GitReq(ctx context.Context, c *app.RequestContext, u string, cfg *config.Co
 	if contentLength != "" {
 		size, err := strconv.Atoi(contentLength)
 		sizelimit := cfg.Server.SizeLimit * 1024 * 1024
+		if err != nil {
+			logWarning("%s %s %s %s %s Content-Length header is not a valid integer: %v", c.ClientIP(), c.Method(), c.Path(), c.UserAgent(), c.Request.Header.GetProtocol(), err)
+		}
 		if err == nil && size > sizelimit {
 			finalURL := []byte(resp.Request.URL.String())
 			c.Redirect(http.StatusMovedPermanently, finalURL)
diff --git a/proxy/httpc.go b/proxy/httpc.go
index 80e4510..1f0c6e9 100644
--- a/proxy/httpc.go
+++ b/proxy/httpc.go
@@ -42,7 +42,6 @@ func initHTTPClient(cfg *config.Config) {
 	if cfg.Httpc.Mode == "auto" {
 
 		tr = &http.Transport{
-			//MaxIdleConns:    160,
 			IdleConnTimeout: 30 * time.Second,
 			WriteBufferSize: 32 * 1024, // 32KB
 			ReadBufferSize:  32 * 1024, // 32KB
@@ -64,7 +63,6 @@ func initHTTPClient(cfg *config.Config) {
 		logWarning("use Auto to Run HTTP Client")
 		fmt.Println("use Auto to Run HTTP Client")
 		tr = &http.Transport{
-			//MaxIdleConns:    160,
 			IdleConnTimeout: 30 * time.Second,
 			WriteBufferSize: 32 * 1024, // 32KB
 			ReadBufferSize:  32 * 1024, // 32KB
@@ -89,7 +87,6 @@ func initGitHTTPClient(cfg *config.Config) {
 
 	if cfg.Httpc.Mode == "auto" {
 		gittr = &http.Transport{
-			//MaxIdleConns:    160,
 			IdleConnTimeout: 30 * time.Second,
 			WriteBufferSize: 32 * 1024, // 32KB
 			ReadBufferSize:  32 * 1024, // 32KB
@@ -123,18 +120,14 @@ func initGitHTTPClient(cfg *config.Config) {
 			httpc.WithTransport(gittr),
 			httpc.WithDumpLog(),
 			httpc.WithProtocols(httpc.ProtocolsConfig{
-				Http1:           false,
-				Http2:           false,
-				Http2_Cleartext: true,
+				ForceH2C: true,
 			}),
 		)
 	} else if !cfg.Server.Debug && cfg.GitClone.ForceH2C {
 		gitclient = httpc.New(
 			httpc.WithTransport(gittr),
 			httpc.WithProtocols(httpc.ProtocolsConfig{
-				Http1:           false,
-				Http2:           false,
-				Http2_Cleartext: true,
+				ForceH2C: true,
 			}),
 		)
 	} else if cfg.Server.Debug && !cfg.GitClone.ForceH2C {