Cannot send a content-body with this verb-type

Brian Sweeney picture Brian Sweeney · Oct 20, 2010 · Viewed 183.2k times · Source

I just got this exception (ProtocolViolationException) in my .NET 2.0 app (running on windows mobile 6 standard emulator). What confuses me is that as far as i know, I have not added any content body, unless I've inadvertently done it somehow. My code is below (very simple). Is there anything else i need to do to convince .NET that this is just a http GET?

Thanks, brian

//run get and grab response
WebRequest request = WebRequest.Create(get.AbsoluteUri + args);
request.Method = "GET";
Stream stream = request.GetRequestStream();           // <= explodes here
XmlTextReader reader = new XmlTextReader(stream);

Answer

Jon Skeet picture Jon Skeet · Oct 20, 2010

Don't get the request stream, quite simply. GET requests don't usually have bodies (even though it's not technically prohibited by HTTP) and WebRequest doesn't support it - but that's what calling GetRequestStream is for, providing body data for the request.

Given that you're trying to read from the stream, it looks to me like you actually want to get the response and read the response stream from that:

WebRequest request = WebRequest.Create(get.AbsoluteUri + args);
request.Method = "GET";
using (WebResponse response = request.GetResponse())
{
    using (Stream stream = response.GetResponseStream())
    {
        XmlTextReader reader = new XmlTextReader(stream);
        ...
    }
}