I am working on an app which can upload tracks to SoundCloud. I have [been working][1] on this for a while but i can't get it to work. I am using HttpWebRequest for the request to SoundCloud and this works fine on Unity for Windows. But when i try it on my Android device i get the following message: 'Request entity contains invalid byte sequence. Please transmit valid UTF-8.'.
Below is the part of code that i use (got it from somewhere on the internet).
I made sure i was uploading the same file on Windows as on Android and did the request to [RequestBin][2]. There you can see the requests (for 48 hours), the [most bottom][3] one in from Windows, the [one above][4] that is from Android. Now, when i compared the two, i noticed that the raw data is almost completely identical except for the end:
![alt text][5]
Notice that on Android there is more data. Can someone explain to me what is going on here?
public static HttpWebResponse Upload(HttpWebRequest req, UploadFile[] files, NameValueCollection form)
{
List mimeParts = new List();
try
{
foreach (string key in form.AllKeys)
{
StringMimePart part = new StringMimePart();
part.Headers["Content-Disposition"] = "form-data; name=\"" + key + "\"";
part.StringData = form[key];
mimeParts.Add(part);
}
int nameIndex = 0;
foreach (UploadFile file in files)
{
StreamMimePart part = new StreamMimePart();
if (string.IsNullOrEmpty(file.FieldName))
file.FieldName = "file" + nameIndex++;
part.Headers["Content-Disposition"] = "form-data; name=\"" + file.FieldName + "\"; filename=\"" + file.FileName + "\"";
part.Headers["Content-Type"] = file.ContentType;
part.SetStream(file.Data);
mimeParts.Add(part);
}
string boundary = "----------" + DateTime.Now.Ticks.ToString("x");
req.ContentType = "multipart/form-data; boundary=" + boundary;
req.Method = "POST";
long contentLength = 0;
byte[] _footer = Encoding.UTF8.GetBytes("--" + boundary + "--\r\n");
foreach (MimePart part in mimeParts)
{
contentLength += part.GenerateHeaderFooterData(boundary);
}
req.ContentLength = contentLength + _footer.Length;
byte[] buffer = new byte[8192];
byte[] afterFile = Encoding.UTF8.GetBytes("\r\n");
int read;
foreach(var header in req.Headers)
{
Debug.Log(header);
}
using (Stream s = req.GetRequestStream())
{
foreach (MimePart part in mimeParts)
{
s.Write(part.Header, 0, part.Header.Length);
while ((read = part.Data.Read(buffer, 0, buffer.Length)) > 0)
{
s.Write(buffer, 0, read);
}
part.Data.Dispose();
s.Write(afterFile, 0, afterFile.Length);
}
s.Write(_footer, 0, _footer.Length);
}
return (HttpWebResponse)req.GetResponse();
}
catch (Exception e)
{
Debug.Log ("Crash! Message: " + e.Message);
foreach (MimePart part in mimeParts)
if (part.Data != null)
part.Data.Dispose();
throw;
}
}
[1]: http://answers.unity3d.com/questions/972511/encoding-on-android-not-correct.html
[2]: http://requestb.in/16x52sy1?inspect
[3]: http://requestb.in/16x52sy1?inspect#15xsq6
[4]: http://requestb.in/16x52sy1?inspect#vckbih
[5]: /storage/temp/47005-requests.png
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