code: @Deprecated
      public String readLine() throws IOException, IllegalStateException {
          LOG.trace("enter HttpConnection.readLine()");
  
          assertOpen();
          return HttpParser.readLine(inputStream);
      }
docs: Reads up to <tt>"\n"</tt> from the (unchunked) input stream.
  If the stream ends before the line terminator is found,
  the last part of the string will still be returned.
  
  @throws IllegalStateException if the connection is not open
  @throws IOException if an I/O problem occurs
  @return a line from the response
  
  @deprecated use #readLine(String)