title: help needed on writing NSData to output stream using NSStream in objective c
body: <p>i using the following code which writes the file from a path to an output stream but every time i run the code, it always write 131768 bytes to the stream regards of my file size(8MB or 5MB or etc). Can someone please check for me? i can't seems to find the problem. Or it there other ways to do it? I'm using NSStream with the following code:</p>
  
  <pre><code>NSString *filesContent = [[NSString alloc] initWithContentsOfFile:myMediaFile];           // myMediaFile is a path to my file eg. .../Documents/myvideo.mp4/
  
  NSData *data = [ filesContent dataUsingEncoding:NSASCIIStringEncoding        allowLossyConversion:YES];
  
  const uint8_t *buf = [data bytes];
  
  NSUInteger length = [data length];
   NSLog(@"datalen = %d",length);
   NSInteger nwritten = [outputStream write:buf maxLength:length];
  
   if (-1 == nwritten) {
    NSLog(@"Error writing to stream %@: %@", outputStream, [outputStream streamError]);
   }else{
    NSLog(@"Wrote %ld bytes to stream %@.", (long long)nwritten, outputStream);
   }
  </code></pre>