File Transfer error - stops at 26280 bytes.

Question

I am trying to make a little file transfer utility, and it works when I test the client and server sides on the same machine, but when I began to test the client and server on different machines it starts giving me problems. For files under 26280 bytes the file transfers completely, no problems. But for anything over that amount, the server stops the transfer and returns a bunch of errors on the server side. The client thinks the file is complete and quits. I am pretty sure it has something to do with the way I have set up the Streams. Here is the code snippit:
For Server:
OutputStream os = socket.getOutputStream();
     BufferedOutputStream bos = new BufferedOutputStream(os);
File nFile = filename;
long long_size = nFile.length();
int size = (int)long_size;
byte[] buffer = new byte[size];
FileInputStream fis = new FileInputStream(nFile);
DataInputStream dis = new DataInputStream(inStream);
while(fis.read(buffer)!=-1){
bos.write(buffer);
bos.flush();
For Client:
InputStream is = sock.getInputStream();
BufferedInputStream bis = new BufferedInputStream(is);
FileOutputStream fos = new FileOutputStream(file);
BufferedOutputStream bosfile = new BufferedOutputStream(fos);
while(true) {
size = bis.available();
if(size == 0)
break;
byte[] pOutput2 = new byte[size];
rc=bis.read(pOutput2, 0, size);
if(rc == -1)
break;
bosfile.write(pOutput2);
if(rc < size)
count +=rc;
break;
else
count +=size;
Any help would be much appreciated. Thank you very much

Answer 1

Doubtful code:
size = bis.available();
if(size == 0)
break;
You have a buffered input stream hanging on a socket input stream. So what if the client gets ahead of the server? Answer: for a while, there is no data available.