Method Request

pkg/request/request.go:96–223

Request 发送HTTP请求

(method, target string, body io.Reader, opts ...Option)

// Request 发送HTTP请求
func (c *HTTPClient) Request(method, target string, body io.Reader, opts ...Option) *Response {
	// 应用额外设置
	c.mu.Lock()
	options := c.options.clone()
	c.mu.Unlock()
	for _, o := range opts {
		o.apply(&options)
	}

	// 创建请求客户端
	client := &http.Client{
		Timeout: options.timeout,
		Jar:     options.cookieJar,
	}

	if options.transport != nil {
		client.Transport = options.transport
	}

	// size为0时将body设为nil
	if options.contentLength == 0 {
		body = nil
	}

	// 确定请求URL
	if options.endpoint != nil {
		targetPath, err := url.Parse(target)
		if err != nil {
			return &Response{Err: err}
		}

		targetURL := *options.endpoint
		target = targetURL.ResolveReference(targetPath).String()
	}

	// 创建请求
	var (
		req *http.Request
		err error
	)
	start := time.Now()
	if options.ctx != nil {
		req, err = http.NewRequestWithContext(options.ctx, method, target, body)
	} else {
		req, err = http.NewRequest(method, target, body)
	}
	if err != nil {
		return &Response{Err: err}
	}

	// 添加请求相关设置
	if options.header != nil {
		for k, v := range options.header {
			req.Header.Add(k, strings.Join(v, " "))
		}
	}

	req.Header.Set("User-Agent", "Cloudreve/"+constants.BackendVersion)