如何在http标头中设置用户代理 [英] How can I set the user-agent in the http header

问题描述

我正在尝试在C#中的覆盖函数GetWebRequest中的http标头中设置用户代理

I'm trying to set the user-agent in my http header in our override function GetWebRequest in C#

protected override System.Net.WebRequest GetWebRequest(Uri uri)
{
    System.Net.HttpWebRequest request = base.GetWebRequest(uri) as System.Net.HttpWebRequest;                
    request.Headers.Add("User-Agent", ([e-mail]"));
    request.ProtocolVersion = System.Net.HttpVersion.Version10;
    request.CachePolicy = new RequestCachePolicy(RequestCacheLevel.NoCacheNoStore);
    request.KeepAlive = false;
    return request;
} 

我的请求返回错误，并被告知他们没有看到用户代理.我尝试了其他设置标题用户代理的方法，但到目前为止没有任何效果.我尝试过的其他方法是

My request is being returned with an error and I was told they are not seeing the user-agent. I've tried other ways of setting the header user-agent but nothing is working so far. Some other ways I've tried are

request.Headers["User-Agent"] = "[e-mail]");
request.UserAgent = "[e-mail]";
request.Headers.Set("User-Agent", "[e-mail]");

我要发送请求的网站告诉我，如果出现问题，它需要一种方法来识别我们，并且请确保您的请求包括"user-agent" http标头."他们给我发送了一个示例，但它使用的是CURL

The site I am trying to send my request is telling me it needs a way to identify us in case of issues and "please make sure your request includes the "user-agent" http header." They've sent me an example but it is using CURL

curl_setopt($ch, CURLOPT_USERAGENT,'[e-mail])

推荐答案

用户代理代表您的浏览器，如Firefox或Chrome

User-agent represent your browser like Firefox or Chrome

通过将其强制转换为HttpWebRequest来使用HttpWebRequest的UserAgent属性

Use the UserAgent property on HttpWebRequest by casting it to a HttpWebRequest

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.UserAgent = "my user agent";

或

request = new HttpClient();
request.DefaultRequestHeaders.TryAddWithoutValidation("User-Agent", "Mozilla/5.0 (Windows NT 10.0; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0");

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