HTTP Client

package httpclientimport (	"bytes"	"io"	"net/http"	"time")type Client struct {	client     *http.Client	maxRetries int	retryDelay time.Duration}func NewClient(timeout time.Duration, maxRetries int, retryDelay time.Duration) *Client {	return &Client{		client: &http.Client{			Timeout: timeout,		},		maxRetries: maxRetries,		retryDelay: retryDelay,	}}func (c *Client) Get(url string, headers map[string]string) (*http.Response, error) {	req, err := http.NewRequest("GET", url, nil)	if err != nil {		return nil, err	}	return c.doWithRetry(req, headers)}func (c *Client) Post(url string, body []byte, headers map[string]string) (*http.Response, error) {	req, err := http.NewRequest("POST", url, bytes.NewBuffer(body))	if err != nil {		return nil, err	}	return c.doWithRetry(req, headers)}func (c *Client) doWithRetry(req *http.Request, headers map[string]string) (*http.Response, error) {	for k, v := range headers {		req.Header.Set(k, v)	}		var lastErr error	for i := 0; i <= c.maxRetries; i++ {		resp, err := c.client.Do(req)		if err == nil && resp.StatusCode < 500 {			return resp, nil		}		if resp != nil {			resp.Body.Close()		}		lastErr = err		if i < c.maxRetries {			time.Sleep(c.retryDelay)		}	}	return nil, lastErr}

package mainimport (	"fmt"	"io"	"time"	"httpclient")func main() {	client := httpclient.NewClient(		10*time.Second,		3,		1*time.Second,	)		headers := map[string]string{		"Content-Type": "application/json",		"Authorization": "Bearer your-token-here",	}		resp, err := client.Get("https://api.example.com/data", headers)	if err != nil {		fmt.Printf("Error: %v\n", err)		return	}	defer resp.Body.Close()		body, _ := io.ReadAll(resp.Body)	fmt.Printf("Status: %d\n", resp.StatusCode)	fmt.Printf("Body: %s\n", body)}