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Asked: 2026-05-29T08:10:25+00:00

I’m using XML-RPC.NET (from http://www.xml-rpc.net/ ) and the HttpListener method of listening for XML-RPC

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I’m using XML-RPC.NET (from http://www.xml-rpc.net/) and the HttpListener method of listening for XML-RPC communication on a specific network port and responding to it.

The body of a request that comes in is accessible through the HttpListenerContextInstance.Request.InputStream Stream object:

HttpListener hlListener = new HttpListener();
HttpListenerContext hlcContext = hlListener.GetContext();
// hlcContext.Request.InputStream contains what I want

The Stream can be accessed from hlcContext.Request.InputStream but this Stream is not seekable so I can’t read it/display it and then seek back to the beginning of it so that the XML-RPC.NET library can use it as it needs to. Once it’s read, it’s consumed and can’t be re-read.

I understand that one way of handling this situation would be to convert it from a Stream into a MemoryStream which does support seeking, however, I don’t know of a way to do this so that XML-RPC.NET continues on using the MemoryStream instead of the Stream. Just copying the Stream to a MemoryStream seems to consume the Stream making it unusable past that point:

// hlcContext.Request.InputStream is currently filled
MemoryStream msInput = new MemoryStream();
hlcContext.Request.InputStream.CopyTo(msInput);
byte[] byteInput = msInput.ToArray();
// hlcContext.Request.InputStream is now empty and XML-RPC.NET can no longer use it :(

How can I read from the Stream so that I can store it in a String and have the Stream continue to work with XML-RPC.NET after that point?

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1 Answer

  1. Editorial Team

    If you can’t find a legitimate way, here is a hack to set a stream to Request.InputStream (As a last resort)

    MemoryStream msInput = new MemoryStream();
hlcContext.Request.InputStream.CopyTo(msInput);
byte[] byteInput = msInput.ToArray();
msInput.Seek(0, SeekOrigin.Begin);

request.GetType().InvokeMember("m_RequestStream", BindingFlags.SetField | BindingFlags.Instance | BindingFlags.NonPublic, null, request, new object[] { msInput });

    Now you can freely use byteInput

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