Sending raw data to a web server

[JoeB]

hi,

Im trying to send data (raw bytes) to a web server. I cannot figure out how
to do it. I need the data to be read by PHP which i have already written.
The data must be post data.

I also send some variables to the web server, which i can retreive, but the
raw data disapears.

Here is my sending code (error checking removed):
--------

string boundary = "----------" + DateTime.Now.Ti cks.ToString("x ");

string sRequestUrl = this.sUrl + "?key=12345 ";

HttpWebRequest webrequest = CreateWebReques t( sRequestUrl );

webrequest.Cont entType = "multipart/form-data; boundary=" + boundary;
webrequest.Meth od = "POST";
webrequest.Allo wWriteStreamBuf fering = false;

// Build up the post message header
StringBuilder sb = new StringBuilder() ;
sb.Append("--" + boundary + "\r\n");
sb.Append("Cont ent-Type: text/plain; name=\"data\"") ;
sb.Append("Cont ent-Type: application/octet-stream");
sb.Append("\r\n \r\n");

byte[] postHeaderBytes = Encoding.UTF8.G etBytes(sb.ToSt ring());

byte[] boundaryBytes = Encoding.ASCII. GetBytes("\r\n--" + boundary +
"\r\n");

// Read file data.
byte[] buffer = new Byte[ this.iUploadBuf ferSize ];
long lBytesReadFromF ile = fs.Read(buffer, (int)lOffset, buffer.Length);

// set request length.
webrequest.Cont entLength = postHeaderBytes .Length + lBytesReadFromF ile +
boundaryBytes.L ength;

Stream requestStream = null;
requestStream = webrequest.GetR equestStream();

// Write out our post header
requestStream.W rite(postHeader Bytes, 0, postHeaderBytes .Length);

// Write out the file contents
requestStream.W rite( buffer, 0, (int)lBytesRead FromFile );

// Write out the trailing boundary
requestStream.W rite(boundaryBy tes, 0, boundaryBytes.L ength);

requestStream.F lush();
requestStream.C lose();


--------





please help!!



Joe

[koltun@gmail.com]

Re: Sending raw data to a web server

Hi,

Why do you have the "Content-Type" specified twice ?
[color=blue]
> sb.Append("Cont ent-Type: text/plain; name=\"data\"") ;
> sb.Append("Cont ent-Type: application/octet-stream");[/color]

Also try to put "Content-Transfer-Encoding: binary" in the headers of
mime part, and put a "--" trail in the closing boundary.

Hope it will help.