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System.Net.WebException : The remote server returned an error: (415) UNSUPPORTED MEDIA TYPE

I am having problems with a bit of code that accesses a restful web service. Running this code, it errors out at var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse(); and the exception returned is: "System.Net.WebException : The remote server returned an error: (415) UNSUPPORTED MEDIA TYPE."

      public bool CreateAccount(string myUsername, string url, string authtoken) {        try {            HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(url);            httpWebRequest.ContentType = "application/json";            httpWebRequest.MediaType="application/json";            httpWebRequest.Accept="application/json";            httpWebRequest.Method = "POST";            WebHeaderCollection headers = new WebHeaderCollection();            headers.Add("Authorization: Token"+authtoken);            httpWebRequest.Headers = headers;            using (StreamWriter streamWriter = new StreamWriter(httpWebRequest.GetRequestStream())) {                streamWriter.Write("{username : ‘"+myUsername+"‘}");            }            var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse(); // Fails on this line.            using (var streamReader = new StreamReader(httpResponse.GetResponseStream())) {                JavaScriptSerializer jsSerializer = new JavaScriptSerializer();                string json = streamReader.ReadToEnd();            }            return true;        } catch (WebException e) {            throw e;            return false;        }        //return true;    }

I have tried various things for the ContentType, MediaType, and Accept, but the working example given to me by the developer of the service supplies -H "Content-Type: application/json" to curl, so it would seem that "application/json" is the correct value. He also does --data-binary, which I assume streamWriter does for me.

Does anyone know what might be causing this error?

 

Figured it out.

When I do:

   WebHeaderCollection headers = new WebHeaderCollection();   headers.Add("Authorization: Token "+authtoken);   httpWebRequest.Headers = headers;

I accidentally blow away all of the existing headers that were created by doing:

        httpWebRequest.ContentType = "application/json";        httpWebRequest.MediaType="application/json";        httpWebRequest.Accept="application/json";        httpWebRequest.Method = "POST";

The answer is to move the code where I create the header with the auth token above the code where I set the other headers.

 

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