[C#]Http请求报头设置

https://blog.csdn.net/chordwang/article/details/54311033

1.添加一个SetHeaderValue方法：

        public static void SetHeaderValue(WebHeaderCollection header, string name, string value)
        {
            var property = typeof(WebHeaderCollection).GetProperty("InnerCollection",BindingFlags.Instance | BindingFlags.NonPublic);
            if (property != null)
            {
                var collection = property.GetValue(header, null) as NameValueCollection;
                collection[name] = value;
            }
        }

2.调用这个方法设置HttpHeader头：

      HttpWebRequest rq = (HttpWebRequest)WebRequest.Create("Url");
                rq.Method = "GET";
                SetHeaderValue(rq.Headers, "Host", "127.0.0.1");
                SetHeaderValue(rq.Headers, "Connection", "keep-alive");
                SetHeaderValue(rq.Headers, "Accept", "*/*");
                SetHeaderValue(rq.Headers, "X-Requested-With", "XMLHttpRequest");
                SetHeaderValue(rq.Headers, "User-Agent", "...");
                SetHeaderValue(rq.Headers, "Referer", "http://127.0.0.1/index.php?m=Index&a=indexs");
                SetHeaderValue(rq.Headers, "Accept-Encoding", "gzip, deflate");
                SetHeaderValue(rq.Headers, "Accept-Language", "1.5");
                SetHeaderValue(rq.Headers, "Cookie", "This is Cookie");
 
                HttpWebResponse resp = (HttpWebResponse)rq.GetResponse();
 
                using (Stream stream = resp.GetResponseStream())
                {
                    StreamReader reader =new StreamReader(stream,Encoding.Default);
                    string responseString = reader.ReadToEnd();
                    MessageBox.Show(responseString);
                }

3.可以通过抓包软件（如SRSniffer）查看到设置的报头.