Expectation Failed when trying to update twitter status

Question

I can\'t seem to figure this one out. No matter what I do, I keep getting a \"417 Expectation failed\" error. Everywhere I\'ve looked says that I need to get rid of the Expect h

Answer 1

DotNetOpenAuth doesn't set or support Except100Continue directly. Would be nice if there is a property in the Channel class.

Add this before your call to 'PrepareAuthorizedRequest':

    ((HttpWebRequest)WebRequest.Create
(UpdateStatusEndpoint.Location)).ServicePoint.Expect100Continue = false;

Except100Continue is set depending on the called URL. So you can set it before the connection is created. You may even set it globally in the config file.

  <system.net>
    <settings>
      <servicePointManager expect100Continue="false" />
    </settings>
  </system.net>

Answer 2

LinqToTwitter is a Twitter client library that uses DotNetOpenAuth. I'll see about adding a message posting example to the DotNetOpenAuth core library for a future version.

Answer 3

Set the Expectation to "expect:nothing" ..this is my code:

var data = new Dictionary();

data.Add("status", status);

HttpWebRequest request = twitter.PrepareAuthorizedRequest(UpdateStatusEndpoint, accessToken, data);

request.Expect = "expect:nothing";

var response = twitter.Channel.WebRequestHandler.GetResponse(request); exception return XDocument.Load(XmlReader.Create(response.GetResponseReader()));

it worked for me...