v2 (#33)

- CHANGE: 优化`proxy`核心模块, 使用Chuncked Buffer传输数据, 减少内存占用
- REMOVE: caddy
- REMOVE: nocache
- CHANGE: 优化前端页面

proxy/proxyreq.go

@@ -0,0 +1,79 @@
+package proxy
+
+/*
+func ProxyRequest(c *gin.Context, u string, cfg *config.Config, mode string, runMode string) {
+	method := c.Request.Method
+	logInfo("%s %s %s %s %s", c.ClientIP(), method, u, c.Request.Header.Get("User-Agent"), c.Request.Proto)
+
+	client := createHTTPClient(mode)
+	if runMode == "dev" {
+		client.DevMode()
+	}
+
+	// 发送HEAD请求, 预获取Content-Length
+	headReq := client.R()
+	setRequestHeaders(c, headReq)
+	AuthPassThrough(c, cfg, headReq)
+
+	headResp, err := headReq.Head(u)
+	if err != nil {
+		HandleError(c, fmt.Sprintf("Failed to send request: %v", err))
+		return
+	}
+	defer headResp.Body.Close()
+
+	if err := HandleResponseSize(headResp, cfg, c); err != nil {
+		logWarning("%s %s %s %s %s Response-Size-Error: %v", c.ClientIP(), method, u, c.Request.Header.Get("User-Agent"), c.Request.Proto, err)
+		return
+	}
+
+	body, err := readRequestBody(c)
+	if err != nil {
+		HandleError(c, err.Error())
+		return
+	}
+
+	req := client.R().SetBody(body)
+	setRequestHeaders(c, req)
+	AuthPassThrough(c, cfg, req)
+
+	resp, err := SendRequest(c, req, method, u)
+	if err != nil {
+		HandleError(c, fmt.Sprintf("Failed to send request: %v", err))
+		return
+	}
+	defer resp.Body.Close()
+
+	if err := HandleResponseSize(resp, cfg, c); err != nil {
+		logWarning("%s %s %s %s %s Response-Size-Error: %v", c.ClientIP(), method, u, c.Request.Header.Get("User-Agent"), c.Request.Proto, err)
+		return
+	}
+
+	CopyResponseHeaders(resp, c, cfg)
+	c.Status(resp.StatusCode)
+	if err := copyResponseBody(c, resp.Body); err != nil {
+		logError("%s %s %s %s %s Response-Copy-Error: %v", c.ClientIP(), method, u, c.Request.Header.Get("User-Agent"), c.Request.Proto, err)
+	}
+}
+
+// 复制响应体
+func copyResponseBody(c *gin.Context, respBody io.Reader) error {
+	_, err := io.Copy(c.Writer, respBody)
+	return err
+}
+
+// 判断并选择TLS指纹
+func createHTTPClient(mode string) *req.Client {
+	client := req.C()
+	switch mode {
+	case "chrome":
+		client.SetUserAgent("Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36").
+			SetTLSFingerprintChrome().
+			ImpersonateChrome()
+	case "git":
+		client.SetUserAgent("git/2.33.1")
+	}
+	return client
+}
+
+*/