[globaljobber]

Hi,

Can anyone please help, been at this for 3 solid days. I'm working with ASP.NET C# and trying to upload photo image to Twitpic.

I am trying to use the OAuth procedure, but keep getting

"The remote server returned an error: (401) Unauthorized."


This is where I'm at.......

I have all of the following after initial authentication and redirection to the upload image page:


oauth_token = XXXXXXXXXXXXX
oauth_token_secret = XXXXXXXXXXXXXXX
nonce = 7913223
consumerKey = XXXXXXXXXXXXXXX
consumerSecret = XXXXXXXXXXXXXXXXXXXXXXX
timeStamp = 1279301514
sig = IISiFDlCSRFu%2fcy7GrXaQ6HgI5c%3d


As I understand it, I then need to put this lot into a HttpWebRequest using POST, along with the image data.


I have created two headers.........

"X-Verify-Credentials-Authorization:OAuth oauth_token=XXXXXXXXXXXXX,realm=http://api.twitter.com/,oauth_token_secret=XXXXXXXXXXXXX,oauth_consumer_k ey=XXXXXXXXXXXXXXXX,oauth_signature_method=HMAC-SHA1,oauth_timestamp=1279301514,oauth_nonce=791322 3,oauth_version=1.0,oauth_signature=IISiFDlCSRFu%2 fcy7GrXaQ6HgI5c%3d"


and..........

"X-Auth-Service-Provider:https://api.twitter.com/1/account/verify_credentials.json"


This is my upload image code..........



private string UploadPhoto(byte[] binaryImageData, string ContentType, string message, string filename, string _oAuth, string consumerKey, string oauth_token, string timeStamp, string nonce, string sig)
{
string _response = string.Empty;

string boundary = Guid.NewGuid().ToString().Replace("-", "");
string requestUrl = "http://api.twitpic.com/2/upload.json";
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(requestUrl);
string encoding = "iso-8859-1";

request.PreAuthenticate = true;
request.ContentType = string.Format("multipart/form-data; boundary={0}", boundary);
request.Method = "POST";

string header = string.Format("--{0}", boundary);
string footer = string.Format("--{0}--", boundary);

StringBuilder contents = new StringBuilder();

contents.AppendLine(header);
contents.AppendLine(String.Format("Content-Disposition: form-data; name=\"{0}\"", "X-Auth-Service-Provider"));
contents.AppendLine();
contents.AppendLine("https://api.twitter.com/1/account/verify_credentials.json");

contents.AppendLine(header);
contents.AppendLine(String.Format("Content-Disposition: form-data; name=\"{0}\"", "X-Verify-Credentials-Authorization"));
contents.AppendLine();
contents.AppendLine(_oAuth);

contents.AppendLine(header);
contents.AppendLine(String.Format("Content-Disposition: form-data; name=\"{0}\"", "messsage"));
contents.AppendLine();
contents.AppendLine(message);

contents.AppendLine(header);
contents.AppendLine(String.Format("Content-Disposition: form-data; name=\"{0}\"", "key"));
contents.AppendLine();
contents.AppendLine(consumerKey);


contents.AppendLine(header);

string fileContentType = ContentType;
string fileHeader = String.Format("Content-Disposition: file; name=\"{0}\"; filename=\"{1}\"", "media", filename);
string fileData = Encoding.GetEncoding(encoding).GetString(binaryIma geData);

contents.AppendLine(fileHeader);
contents.AppendLine(String.Format("Content-Type: {0}", fileContentType));
contents.AppendLine();
contents.AppendLine(fileData);

contents.AppendLine(footer);

byte[] bytes = Encoding.GetEncoding(encoding).GetBytes(contents.T oString());
request.ContentLength = bytes.Length;

using (Stream requestStream = request.GetRequestStream())
{
requestStream.Write(bytes, 0, bytes.Length);

using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
_response = reader.ReadToEnd();
}
}
}
return _response;
}