Urgent: Uploading file, cannot receive InputStream SocketTimeOutException

Question

Hey everyone,
I am going crazy with this. We have a server that supprots HTTP1.1 and Transfer-Encoding: chunked.
We have written a mobile app that uploads a file to the server using URLConnection. Due to low memory on the phone we do not want to buffer all data and send it in once erquest. Instead we want it to be streamed through.
We found out that Transfer-encoding: chunked does this. It actually works, we can see the network data being streamed while its being read.
The problem starts after the file has been sent. We are unable to retrieve the InputStream. We get a SocketTimeoutException.after requesting the InputStream.
InputStream is = httpConn.getInputStream(); //This line causes the timeout.
It seems as if the server DOES NOT KNOW we are done sending the file? We read the documentation for chunked send and according to wikipedia we have to add a zero-size chunk at the end.
We have tried adding this but still we are getting this exception. Not sure if we tried it correctly though.
Can anyone please help? This is very urgent.
Thank you,
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
PrintStream pout = new PrintStream(buffer, true, "ISO-8859-1");
pout.print("--" +boundary);
for (String[] arg : pars) {
pout.print(LINE_BREAK);
pout.print("Content-Disposition: form-data; name=\""+ arg[0] +"\"");
pout.print(LINE_BREAK+ LINE_BREAK);
pout.print(arg[1]);
pout.print(LINE_BREAK);
pout.print("--" +boundary);
pout.print(LINE_BREAK);
pout.print("Content-Disposition: form-data; filename="+ URLEncoder.encode(fileName));
pout.print(LINE_BREAK);
pout.print("Content-Type: " +mimeType);
pout.print(LINE_BREAK+ LINE_BREAK);
pout.close();
con.connect();
OutputStream out = con.getOutputStream();
out.write(buffer.toByteArray());
out.flush();
byte[] buf = new byte[2048];
int read;
long processed = 0;
while ((read = data.read(buf)) > 0) {
if (isCancelled()) {
out.close();
return;
/ *DATA GETS SEND HERE ONLY IF WE SET Transfer-Encoding: chunked OR USE setChunkedStreamingMode(xxxx);* /+ --+
out.write(buf, 0, read);+ --+
processed+ --+= read;
publishProgress((int) (100 * processed / fileLength));
out.write(ending);
out.close();
}aBs
Edited by: aBsOlUtJava on Jul 2, 2009 3:36 PM
Edited by: aBsOlUtJava on Jul 2, 2009 3:40 PM
Edited by: aBsOlUtJava on Jul 2, 2009 3:40 PM

Answer 1

Hey,
Sorry I wrapped the code in tags. Yes I have tried using the Content-Length header.
If I avoid getting the InputStream the upload works, but I want to get the InputStream to read the servers response as some files can be rejected.
Please see: http://en.wikipedia.org/wiki/Chunked_transfer_encoding, it says something a zero-chunk at the end. Is the reason perhaps that the server does not know my upload and request is done?
I apologize for the urgent mark, I have been trying for 48 hours on this and I am going crazy =(