race condition waiting for "0644"

[bsilvern]

There is a race condition in CompleteFlow.java at:

// read '0644 '
in.read(buf, 0, 5);

…if fewer than 5 bytes have arrived at that time as the read function does not block. Replacing the above code with the following corrects this:

int bytes_read = 0;
while (bytes_read < 5)
  bytes_read += in.read(buf, 0, 5-bytes_read);