I've already written an HTTPHandler that gets POSTed from a ColdFusion page and it works successfully; now, I am trying to write a web application in ASP.NET so I can post a form to the .ashx handler from an .aspx page.
Application Trace (trace.axd) shows the following as my last 3 entries:
2 8/14/2009 1:53:56 PM /Default.aspx 200 GET View Details
3 8/14/2009 1:54:04 PM /Default.aspx 200 POST View Details
4 8/14/2009 1:54:13 PM /UploadHandler.ashx 401 POST View Details
I have a breakpoint in my .ashx file but it is never reached (I guess because of the 401 status code). Here is the snippet of code from the default.aspx trying to POST to the handler:
protected void UploadHandlerButton_Click(object sender, EventArgs e)
{
if (FileUpload1.HasFile)
{
try
{
ASCIIEncoding encoding = new ASCIIEncoding();
byte[] data = encoding.GetBytes(BuildFormData());
string baseAddress = "http://" + Environment.MachineName;
string pathInfo = Page.ResolveUrl("UploadHandler.ashx");
string URI = baseAddress + pathInfo;
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(URI);
myRequest.Method = "POST";
myRequest.ContentType = "application/x-www-form-urlencoded";
myRequest.ContentLength = data.Length;
Stream newStream = myRequest.GetRequestStream();
newStream.Write(data, 0, data.Length);
newStream.Close();
}
catch (Exception someError)
{
LogText("FAILURE: " + someError.Message);
}
}
}
Here is a snippet of code from the UploadHandler.ashx file (but this doesn't appear to be reached):
public void ProcessRequest(HttpContext context)
{
string returnURL = context.Request.ServerVariables["HTTP_REFERER"];
string message;
message = UploadFile(context);
StringBuilder msgReturn = new StringBuilder(returnURL);
msgReturn.Append("?n=");
msgReturn.Append(HttpUtility.UrlEncode(TRIMrecNumAssigned));
msgReturn.Append("&m=");
msgReturn.Append(HttpUtility.UrlEncode(message));
context.Response.Redirect(msgReturn.ToString());
}
Both default.aspx and UploadHandler.ashx are in the root of a virtual directory on my localhost; the directory security is currently set to "Anonymous access" CHECKED and "Integrated Windows authentication" CHECKED.
When I click the "View Details" link on the trace.axd display, I see all the data in the Forms collection that I expect to see and hope to process but this 401 seems to be stopping everything. I could post the code for my little function called BuildFormData() if useful.
EDIT: Revised handler as follows (has had no effect; same error occurs):
public void ProcessRequest(HttpContext context)
{
//-----------------------------------------------------------------------------------------
// the remainder of this block is alternative to the .Redirect and is useful for debugging.
context.Response.ContentType = "text/html";
//context.Response.Write(TRIMrecNumAssigned);
//context.Response.Write("<p>");
//context.Response.Write(msgReturn);
context.Response.Write("<H1>Trim - Kerberos Prototype for ColdFusion consuming pages</h1>");
HttpContext.Current.Trace.IsEnabled = true;
HttpContext.Current.Trace.Write(null);
HttpContext.Current.Trace.Write("-------");
HttpContext.Current.Trace.Write(context.Request.Form["txtTrimRecordType"]);
HttpContext.Current.Trace.Write(GetUserInfo());
HttpContext.Current.Trace.Write("-------");
HttpContext.Current.Trace.Write(null);
using (Html32TextWriter htw = new Html32TextWriter(context.Response.Output))
{
typeof(TraceContext)
.GetMethod("Render", BindingFlags.NonPublic | BindingFlags.Instance)
.Invoke(HttpContext.Current.Trace, new object[] { htw });
}
}