public override void PostBlogMessage(BlogPostObject blogPostObject)
{
#region Argument check
//Check for empty path, mandatory for twitpic
if (string.IsNullOrEmpty(blogPostObject.Filename))
{
OnErrorOccured(new BlogServiceEventArgs(BlogServiceErrorLevel.Failed, ERROR_UPLOAD_FAILED, ""));
}
//Check for empty credentials
if (string.IsNullOrEmpty(blogPostObject.Username) ||
string.IsNullOrEmpty(blogPostObject.Password))
{
OnErrorOccured(new BlogServiceEventArgs(BlogServiceErrorLevel.Failed, ERROR_UPLOAD_FAILED, ""));
}
//Message is mandatory for a blog post
if (string.IsNullOrEmpty(blogPostObject.Message))
{
OnErrorOccured(new BlogServiceEventArgs(BlogServiceErrorLevel.Failed, ERROR_UPLOAD_FAILED, ""));
}
#endregion
using (FileStream file = new FileStream(blogPostObject.Filename, FileMode.Open, FileAccess.Read))
{
try
{
//Load the picture data
byte[] incoming = new byte[file.Length];
file.Read(incoming, 0, incoming.Length);
blogPostObject.MediaData = incoming;
XmlDocument uploadResult = UploadPicture(API_UPLOAD_POST, blogPostObject);
if (uploadResult.SelectSingleNode("rsp").Attributes["stat"].Value == "fail")
{
string ErrorText = uploadResult.SelectSingleNode("//err").Attributes["msg"].Value;
OnErrorOccured(new BlogServiceEventArgs(BlogServiceErrorLevel.Failed, ErrorText, ""));
}
else
{
string URL = uploadResult.SelectSingleNode("//mediaurl").InnerText;
OnUploadFinish(new BlogServiceEventArgs(BlogServiceErrorLevel.OK, URL, "", blogPostObject.Filename));
}
}
catch (Exception)
{
OnErrorOccured(new BlogServiceEventArgs(BlogServiceErrorLevel.Failed, "", "Failed to upload picture to TwitPic."));
}
}
}
public abstract void PostBlogMessage(BlogPostObject blogPostObject);
private XmlDocument UploadPicture(string url, BlogPostObject bpo)
{
try
{
HttpWebRequest request = WebRequestFactory.CreateHttpRequest(url);
string boundary = System.Guid.NewGuid().ToString();
request.Credentials = new NetworkCredential(bpo.Username, bpo.Password);
request.Headers.Add("Accept-Language", "cs,en-us;q=0.7,en;q=0.3");
request.PreAuthenticate = true;
request.ContentType = string.Format("multipart/form-data;boundary={0}", boundary);
//request.ContentType = "application/x-www-form-urlencoded";
request.Method = "POST";
request.Timeout = 20000;
string header = string.Format("--{0}", boundary);
string ender = "\r\n" + header + "\r\n";
StringBuilder contents = new StringBuilder();
contents.Append(CreateContentPartString(header, "username", bpo.Username));
contents.Append(CreateContentPartString(header, "password", bpo.Password));
contents.Append(CreateContentPartString(header, "source", "pocketwit"));
contents.Append(CreateContentPartString(header, "message", bpo.Message));
contents.Append(CreateContentPartMedia(header, "media", MediaIdentifier.JPG));
//Create the form message to send in bytes
byte[] message = Encoding.UTF8.GetBytes(contents.ToString());
byte[] footer = Encoding.UTF8.GetBytes(ender);
request.ContentLength = message.Length + bpo.MediaData.Length + footer.Length;
using (Stream requestStream = request.GetRequestStream())
{
requestStream.Write(message, 0, message.Length);
requestStream.Write(bpo.MediaData, 0, bpo.MediaData.Length);
requestStream.Write(footer, 0, footer.Length);
requestStream.Flush();
requestStream.Close();
using (WebResponse response = request.GetResponse())
{
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
XmlDocument responseXML = new XmlDocument();
responseXML.LoadXml(reader.ReadToEnd());
return responseXML;
}
}
}
}
catch (Exception)
{
//Socket exception 10054 could occur when sending large files.
OnErrorOccured(new BlogServiceEventArgs(BlogServiceErrorLevel.Failed, "", "Unable to upload picture."));
return null;
}
}
