code: private int getChunkSize()
          throws IOException
      {
          if (_chunkSize<0)
              return -1;
          
          _trailer=null;
          _chunkSize=-1;
          
          // Get next non blank line
          org.browsermob.proxy.jetty.util.LineInput.LineBuffer line_buffer
              =_in.readLineBuffer();
          while(line_buffer!=null && line_buffer.size==0)
              line_buffer=_in.readLineBuffer();
          
          // Handle early EOF or error in format
          if (line_buffer==null)
              throw new IOException("Unexpected EOF");
          
          String line= new String(line_buffer.buffer,0,line_buffer.size);
          
          
          // Get chunksize
          int i=line.indexOf(';');
          if (i>0)
              line=line.substring(0,i).trim();
          try
          {
              _chunkSize = Integer.parseInt(line,16);
          }
          catch (NumberFormatException e)
          {
              _chunkSize=-1;
              log.warn("Bad Chunk:"+line);
              log.debug(LogSupport.EXCEPTION,e);
              throw new IOException("Bad chunk size");
          }
                   
          // check for EOF
          if (_chunkSize==0)
          {
              _chunkSize=-1;
              // Look for trailers
              _trailer = new HttpFields();
              _trailer.read(_in);
          }
          
          return _chunkSize;
      }
docs: /* Get the size of the next chunk.
  @return size of the next chunk or -1 for EOF.
  @exception IOException