在 C# 中將 WebRequest 轉換為 httpclient

Question

得到這個代碼

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(host);
request.Method = "HEAD";
request.Timeout = 3000;
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
return response.StatusCode == HttpStatusCode.OK;

如何將此代碼轉換為 httpclient，因為 WebRequest.Create(host) 已過時，此代碼在第一次打開應用程序時調用，位於 formload 中以檢查互聯網連接是否活動以及我檢查的主機/域是否已啟動

謝謝

Answer 1

您可以這樣稱呼它，只需注意它是異步的。

using (HttpClient client = new HttpClient())
{
    client.Timeout = TimeSpan.FromMilliseconds(3000);
    HttpResponseMessage response = await client.SendAsync(new HttpRequestMessage(HttpMethod.Head, host));
    return response.IsSuccessStatusCode;
}