如何下载OSM瓷砖？

Question

如何下载OSM瓷砖？我指定了各种请求标题，但是该站点始终返回0个字节。

WebClient client = new WebClient())
client.Headers.Add("method", "GET");
client.Headers.Add("scheme", "https");
client.Headers.Add(HttpRequestHeader.AcceptLanguage, "en-US");
client.Headers.Add("sec-ch-ua", "\"Chromium\";v=\"88\", \"Google Chrome\";v=\"88\", \"; Not A Brand\";v=\"99\"");
client.Headers.Add(HttpRequestHeader.Referer, "https://www.openstreetmap.org/");
client.Headers.Add("sec-fetch-dest", "document");
client.Headers.Add("sec-fetch-mode", "navigate");
client.Headers.Add("sec-fetch-site", "same-site");
client.Headers.Add("sec-fetch-user", "?1");
client.Headers.Add("upgrade-insecure-requests", "1");
client.Headers.Add(HttpRequestHeader.UserAgent, "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.190 Safari/537.36");

client.DownloadData("https://tile.openstreetmap.org/0/0/0.png");

upd：

client.Headers.Add("sec-ch-ua", "\" Not A; Brand\";v=\"99\", \"Chromium\";v=\"101\", \"Microsoft Edge\";v=\"101\"");
client.Headers.Add(HttpRequestHeader.UserAgent, "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.64 Safari/537.36 Edg/101.0.1210.47");

我浏览器中的这些值也不起作用。