I'm trying to automate the upload process to yousendit.com, but the file
size doesn't add up and yousendit.com keep rejecting my upload (it accepts
the upload until the very end)
I don't know what i'm missing, I use Fiddler and I got my header and body to
a very close match, but the content-length is slightly off and I got no clue
why
Sorry for the lengthy post, but i have no other way of showing my work
Can someone please explain the difference in content-length, I can't seem to
work it out. I been searching on google and the news group, but i got
nothing.
Thanks for any input
// =======My Request Header==========
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg,
application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword,
application/x-shockwave-flash, */*
Referer: http://s12.yousendit.com/
Content-Type: multipart/form-data;
boundary=---------------------------7d5158213e047e
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR
1.1.4322)
Pragma: no-cache
Accept-Languag: en-us
Content-Length: 1766 <--- notice this is only 1766 byte, but the IE
value is 2026
Expect: 100-continue
Proxy-Connection: Keep-Alive
Host: s12.yousendit.com
// ============ My Request Body ======================
---------------------------7d5158213e047e
Content-Disposition: form-data; name="__VIEWSTATE"
dDwtMTgyNzA1MTg5OztsPFVwbG9hZEZpbGU7Pj6IqrAZhsvVRc 9Qe1y6cNu6G3V3nQ==
---------------------------7d5158213e047e
Content-Disposition: form-data; name="ToEMail"
mi*******@yahoo.com
---------------------------7d5158213e047e
Content-Disposition: form-data; name="LoadFileName";
filename="D:\Desktop\encoder_check.zip"
Content-Type: application/octet-stream
PK
Same file but using internet explorer to upload
// ========== request header ==========
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg,
application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword,
application/x-shockwave-flash, */*
Accept-Language: en-us
Content-Type: multipart/form-data;
boundary=---------------------------7d533333730406
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR
1.1.4322)
Host: s12.yousendit.com
Content-Length: 2026
Proxy-Connection: Keep-Alive
Pragma: no-cache
// =========== request body ===============
-----------------------------7d533333730406
Content-Disposition: form-data; name="__VIEWSTATE"
dDwtMTgyNzA1MTg5OztsPFVwbG9hZEZpbGU7Pj6IqrAZhsvVRc 9Qe1y6cNu6G3V3nQ==
-----------------------------7d533333730406
Content-Disposition: form-data; name="ToEMail"
mi*******@yahoo.com
-----------------------------7d533333730406
Content-Disposition: form-data; name="LoadFileName";
filename="D:\Desktop\encoder_check.zip"
Content-Type: application/x-zip-compressed
PK
// ============ My Code ==============
string url = @"http://s12.yousendit.com/default.uplx";
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
req.Method = "POST";
req.Accept = @"image/gif, image/x-xbitmap, image/jpeg, image/pjpeg,
application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword,
application/x-shockwave-flash, */*";
req.Referer = @"http://s12.yousendit.com/";
req.ContentType = @"multipart/form-data;
boundary=---------------------------7d5158213e047e";
req.UserAgent = @"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1;
..NET CLR 1.1.4322)";
req.KeepAlive = true;
req.Headers.Add("Pragma", "no-cache");
req.Headers.Add("Accept-Languag", "en-us");
req.Timeout = Timeout.Infinite;
string payload =
"---------------------------7d5158213e047e\r\nContent-Disposition:
form-data;
name=\"__VIEWSTATE\"\r\n\r\ndDwtMTgyNzA1MTg5OztsPF VwbG9hZEZpbGU7Pj6IqrAZhsvVRc9Qe1y6cNu6G3V3nQ==\r\n---------------------------7d5158213e047e\r\nContent-Disposition:
form-data; name=\"ToEMail\"\r\n\r\n" + txtEmail.Text +
"\r\n---------------------------7d5158213e047e\r\nContent-Disposition:
form-data; name=\"LoadFileName\"; filename=\"" + filename +
"\"\r\nContent-Type: " + getMimeType(filename) + "\r\n\r\n";
FileInfo file = new FileInfo(filename);
int filesize = Convert.ToInt32(file.Length);
req.ContentLength = payload.Length + file.Length;
// ==================== Start writing ====================
Stream conn = req.GetRequestStream();
byte[] body_header = System.Text.Encoding.ASCII.GetBytes(payload);
conn.Write(body_header, 0, body_header.Length);
FileStream fs = new FileStream(filename, FileMode.Open, FileAccess.Read);
byte[] file_content = new byte[filesize];
int len = fs.Read(file_content, 0, filesize);
conn.Write(file_content, 0, len);
fs.Close();
Stream respon = req.GetResponse().GetResponseStream();
StreamReader sr = new StreamReader(respon);
extractsendItLink(sr.ReadToEnd());
sr.Close();
respon.Close();
conn.Close();
