code: private void readCrlf() throws IOException {
          final int crsymbol = this.origin.read();
          final int lfsymbol = this.origin.read();
          if (crsymbol != '\r' || lfsymbol != '\n') {
              throw new IOException(
                  String.format(
                      "%s %d%s%d",
                      "CRLF expected at end of chunk: ",
                      crsymbol,
                      "/",
                      lfsymbol
                  )
              );
          }
      }
docs: Read the CRLF terminator.
  @throws IOException If an IO error occurs.