SkyDrive REST API

Question

hi,

I want to upload a "large file" (5 to 10Mb).I want to do it by using multiple webrequest. All i got is http 400.

Here is my code :

string folderId = "folder....!112";
var path = @"D:\...\file.pdf";
var uri = string.Format("{0}{1}/files?{2}", SkyDrive.Utilities.ApiServiceUri, folderId, SkyDrive.Utilities.AccessToken);
int count = 0;
int offset = 0;
int bufferSize = 170000;
byte[] buffer = new byte[bufferSize];
using (var reader = new System.IO.FileStream(path, System.IO.FileMode.Open))
{
   while (offset < reader.Length)
   {
       offset += reader.Read(buffer, 0, bufferSize);
       count += bufferSize + 1;

       var request = (HttpWebRequest)WebRequest.Create(uri);
       request.Method = "POST";
       request.Headers.Add("bits-packet-type", "Fragment");
       request.Headers.Add("Content-Disposition", "file; filename=\"filename.pdf\"");
       request.ContentType = "multipart/form-data; boundary=A300x";// "application/octet-stream";

       using (var stream = request.GetRequestStream())
       {
           using (var writer = new System.IO.BinaryWriter(stream))
           {
               try
               {
                   writer.Write("--A300x\r\n");
                   writer.Write(@"Content-Disposition: form-data; name=""file""; filename=""filename.pdf""\r\n");
                   writer.Write(@"Content-Type: application/octet-stream\r\n");
                   writer.Write(buffer);
                   writer.Write("\r\n--A300x--");
                }
                catch (System.IO.EndOfStreamException excep)
                {
                   throw new ApplicationException(excep.Message);
                }
           }
       }

       using (var stream = request.GetResponse().GetResponseStream())
       {
           using (var responseReader = new System.IO.StreamReader(stream))
           {
               var response = responseReader.ReadToEnd();
                            Console.WriteLine(response);
           }
       }
   }
}

Any suggestions?

Thanks

BriceR

Answer 1

There should have been an error message in the body of the HTTP 400 request. What did it say? 

Answer 2

Hi, 

Sorry for the delay,

here is the response

{
   "error": {
      "code": "request_body_invalid", 
      "message": "The provided request entity body is not valid."
   }
}

thanks

Answer 3

Your post request is malformed.  This code 

          writer.Write(@"Content-Type: application/octet-stream\r\n");

Should actually be

          writer.Write(@"Content-Type: application/octet-stream\r\n\r\n");

I was wondering why you are using HTTP POST to upload files given that is more complicated and error prone than using HTTP PUT?  

Answer 4

hi,

I use a http post because when you try to upload a file on skydrive from windows live website, they use http post. For the record, i try to use http put, but it ended the same way.

Answer 5

hi,

may I know if the code is working for you now? 

I'm getting error at using (var stream = request.GetResponse().GetResponseStream())

http 400 bad request error. i've tried with the /r/n and without it.. both same results.