【修复】修复长期持有tcp连接未关闭

【修复】修复生成新的acme账号时有概率覆盖所有账号
【修复】修复新旧let账号不统一的兼容性问题

backend/internal/cert/deploy/safelinewaf.go

@@ -50,7 +50,8 @@ func RequestSafeLineWaf(data *map[string]any, method, providerID, requestUrl str
 		ignoreSsl = true
 	}
 	tr := &http.Transport{
-		TLSClientConfig: &tls.Config{InsecureSkipVerify: ignoreSsl},
+		TLSClientConfig:   &tls.Config{InsecureSkipVerify: ignoreSsl},
+		DisableKeepAlives: true,
 	}
 
 	client := &http.Client{Transport: tr}
@@ -211,4 +212,4 @@ func SafeLineAPITest(providerID string) error {
 		return fmt.Errorf("测试请求失败: %v", err)
 	}
 	return nil
-}
+}