Asp.NET 1.1 HttpResponse headers - asp.net

Question

i have part of Asp.NET 1.1 project.
I work with remote site, which works incorrect in some cases - sometimes it write incorrect Content-Encoding header.
In my code i get HttpResponse from this remote site. And if Content-Encoding header is equals, for example, "gzip", i need to set Content-Encoding header to "deflate".
But there is no properties or methods in HttpResponse class to get Content-Encoding header.
Content-Encoding property returns, in my case, "UTF-8". In Watch window i see _customProperties field, which contain wrong string value. How can i change header value with Asp.NET 1.1?

Answer 1

There is no way to change custom headers in Asp.NET 1.1.
I solve problem only using reflection.
// first of all we need get type ArrayList with custom headers:
Type responseType = Response.GetType();
ArrayList fieldCustomHeaders = ArrayList)responseType.InvokeMember("_customHeaders",BindingFlags.GetField|BindingFlags.Instance|BindingFlags.NonPublic, null, Response,null);
// next we go thru all elements of list and search our header
for(int i=0; i < fieldCustomHeaders.Count; i++)
{
// see all headers
PropertyInfo propHeaderName = fieldCustomHeaders[i].GetType().GetProperty("Name", BindingFlags.Instance|BindingFlags.NonPublic);
String headerName = (String)propHeaderName.GetValue(fieldCustomHeaders[i], null);
// if we find needed header
if(headerName == "Content-Encoding")
{
// get value of header from its field
FieldInfo fieldHeaderValue = _fieldCustomHeaders[i].GetType().GetField("_value", BindingFlags.Instance|BindingFlags.NonPublic);
String headerValue = (String)fieldHeaderValue.GetValue(fieldCustomHeaders[i]);
// if we find needed value
if (headerValue == "gzip")
{
// just set new value to it
fieldHeaderValue.SetValue(_fieldCustomHeaders[i], "deflate");
break;
}
}
}