private static void ConfigureHeader(HttpWebRequest webRequest, string headerName, string headerValue)
{
// If the header in question corresponds to an HttpWebRequest property, set it.
if (string.Compare(headerName, CommonHeaders.Accept, StringComparison.OrdinalIgnoreCase) == 0)
{
webRequest.Accept = headerValue;
}
else if (string.Compare(headerName, CommonHeaders.Connection, StringComparison.OrdinalIgnoreCase) == 0)
{
webRequest.Connection = headerValue;
}
else if (string.Compare(headerName, CommonHeaders.ContentLength, StringComparison.OrdinalIgnoreCase) == 0)
{
webRequest.ContentLength = Convert.ToInt64(headerValue);
}
else if (string.Compare(headerName, CommonHeaders.ContentType, StringComparison.OrdinalIgnoreCase) == 0)
{
webRequest.ContentType = headerValue;
}
else if (string.Compare(headerName, CommonHeaders.Date, StringComparison.OrdinalIgnoreCase) == 0)
{
DateTime parsedDateTime;
if (NScrapeUtility.TryParseHttpDate(headerValue, out parsedDateTime))
{
webRequest.Date = parsedDateTime;
}
}
else if (string.Compare(headerName, CommonHeaders.Expect, StringComparison.OrdinalIgnoreCase) == 0)
{
webRequest.Expect = headerValue;
}
else if (string.Compare(headerName, CommonHeaders.Host, StringComparison.OrdinalIgnoreCase) == 0)
{
webRequest.Host = headerValue;
}
else if (string.Compare(headerName, CommonHeaders.IfModifiedSince, StringComparison.OrdinalIgnoreCase) == 0)
{
DateTime parsedDateTime;
if (NScrapeUtility.TryParseHttpDate(headerValue, out parsedDateTime))
{
webRequest.IfModifiedSince = parsedDateTime;
}
}
else if (string.Compare(headerName, CommonHeaders.Range, StringComparison.OrdinalIgnoreCase) == 0)
{
// TODO: To support, we'd need to parse the provided range specification (which can include multiple ranges) and
// make one or more calls to HttpWebRequest.AddRange(String, Int64, Int64).
// http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
throw new NotSupportedException("The Range header is not currently supported.");
}
else if (string.Compare(headerName, CommonHeaders.Referer, StringComparison.OrdinalIgnoreCase) == 0)
{
webRequest.Referer = headerValue;
}
else if (string.Compare(headerName, CommonHeaders.TransferEncoding, StringComparison.OrdinalIgnoreCase) == 0)
{
throw new NotSupportedException("The Transfer-Encoding header is not currently supported.");
}
else
{
// A header for which there is no property.
webRequest.Headers.Add(headerName, headerValue);
}
}
