HttpClient StreamContent append filename twice

c#, content-type, image-uploading, multipartform-data, windows-phone-8

Solution

using (var content = new MultipartFormDataContent())
{
    content.Add(CreateFileContent(imageStream, fileName, "image/jpeg"));
}

private StreamContent CreateFileContent(Stream stream, string fileName, string contentType)
{
    var fileContent = new StreamContent(stream);
    fileContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("form-data") 
    { 
        Name = "\"files\"", 
        FileName = "\"" + fileName + "\""
    };
    fileContent.Headers.ContentType = new MediaTypeHeaderValue(contentType);            
    return fileContent;
}

Problem

I am using Microsoft Http Client Libraries to make a multipart request from Windows Phone 8 to the server. It contains a String content having json string and a Stream Content having image stream. Now i get the status OK and request hits on the server. but the logs says the server is not able to get the file name of the image. ``` content.Add(new StreamContent(photoStream), "files", fileName); ``` where the photoStream is the image stream, "files" is the name of content and file name is the name of the image file. So the header value must be: ``` Content-Disposition: form-data; name=files; filename=image123.jpg ``` but actually it is: ``` Content-Disposition: form-data; name=files; filename=image123.jpg; filename*=utf-8''image123.jpg ``` Why it is appending the "`; filename*=utf-8''image123.jpg`" part. Is it an issue? Please let me know any reasons/possibility that i am not able to upload image from WP8.

Original source