Add telemtClient to bot struct and implement makeDirectTransport function for enhanced HTTP client configuration in main.go.

main.go

@@ -46,6 +46,7 @@ type config struct {
 type bot struct {
 	cfg          config
 	httpClient   *http.Client
+	telemtClient *http.Client
 	telegramBase string
 	offset       int64
 }
@@ -158,6 +159,17 @@ func makeHTTPTransport() (*http.Transport, error) {
 	return tr, nil
 }
 
+func makeDirectTransport() *http.Transport {
+	return &http.Transport{
+		MaxIdleConns:        16,
+		MaxIdleConnsPerHost: 8,
+		IdleConnTimeout:     90 * time.Second,
+		TLSHandshakeTimeout: 5 * time.Second,
+		ForceAttemptHTTP2:   true,
+		DisableCompression:  false,
+	}
+}
+
 func getProxyURL() string {
 	for _, key := range []string{"ALL_PROXY", "all_proxy", "HTTPS_PROXY", "https_proxy", "HTTP_PROXY", "http_proxy"} {
 		if v := strings.TrimSpace(os.Getenv(key)); v != "" {
@@ -183,9 +195,15 @@ func main() {
 		Timeout:   cfg.TelegramTimeout,
 	}
 
+	telemtClient := &http.Client{
+		Transport: makeDirectTransport(),
+		Timeout:   cfg.TelemtTimeout,
+	}
+
 	b := &bot{
 		cfg:          cfg,
 		httpClient:   httpClient,
+		telemtClient: telemtClient,
 		telegramBase: "https://api.telegram.org/bot" + cfg.TelegramBotToken,
 	}
 
@@ -611,7 +629,7 @@ func (b *bot) callTelemtJSON(ctx context.Context, method, path string, payload a
 		req.Header.Set("Authorization", b.cfg.TelemtAPIAuth)
 	}
 
-	resp, err := b.httpClient.Do(req)
+	resp, err := b.telemtClient.Do(req)
 	if err != nil {
 		return err
 	}