When you call request from client to server, sometimes, you need to add custom header in HttpWebRequest, you can add it by add headers as below code.
public string GetResponseFromServer(string url)
{
// Get the original response.
HttpWebRequest request;
request = (HttpWebRequest)WebRequest.Create(url);
request.Accept = "*/*";
request.Headers.Set(HttpRequestHeader.IfNoneMatch, "55b03-2b24cbc86f5b169552563b30c23b8a69");
request.Referer = "https:/abc/shop/6088300/?page=1&sortBy=pop";
request.Headers.Set(HttpRequestHeader.Te, "Trailers");
request.Headers.Set(HttpRequestHeader.AcceptCharset, "utf-8;q=0.7,*;q=0.7");
request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; …) Gecko/20100101 Firefox/62.0";
request.Headers.Add("xp-api-source", "pc");
request.Headers.Add("x-requested-with", "XMLHttpRequest");
request.Headers.Add("origin", "https://abc.vn");
request.Headers.Add("If-None-Match", "c9de61df09e496151be0dd86b3ab01f0;gzip");
request.Host = "abc.vn";
request.Headers.Add("Cookie", "SPC_IA=-1; IncludedInSample=1"");
WebResponse response = request.GetResponse();
// Get the stream containing all content returned by the requested server.
Stream dataStream = response.GetResponseStream();
// Open the stream using a StreamReader for easy access.
StreamReader reader = new StreamReader(dataStream);
// Read the content fully up to the end.
string responseFromServer = reader.ReadToEnd();
// Clean up the streams.
reader.Close();
dataStream.Close();
response.Close();
return responseFromServer;
}
Notes:If you got below error message, This header must be modified using the appropriate property please change modified your header by below way:
request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; …) Gecko/20100101 Firefox/62.0";
or
request.Headers.Add("xp-api-source", "pc");
or
request.Headers.Set(HttpRequestHeader.IfNoneMatch, "55b03-2b24cbc86f5b169552563b30c23b8a69");
Remember:
The restricted headers are:
Accept
Connection
Content-Length
Content-Type
Date
Expect
Host
If-Modified-Since
Range
Referer
Transfer-Encoding
User-Agent
Proxy-Connection
Wishes you have more healthy and have a nice day!
Regards!
Zidane