public void inputReady(NHttpServerConnection conn, ContentDecoder decoder) {
    try {
      ProtocolState protocolState = SourceContext.getState(conn);

      if (protocolState != ProtocolState.REQUEST_HEAD
          && protocolState != ProtocolState.REQUEST_BODY) {
        handleInvalidState(conn, "Request message body data received");
        return;
      }

      SourceContext.updateState(conn, ProtocolState.REQUEST_BODY);

      SourceRequest request = SourceContext.getRequest(conn);

      int readBytes = request.read(conn, decoder);
      if (readBytes > 0) {
        metrics.incrementBytesReceived(readBytes);
      }
    } catch (IOException e) {
      logIOException(conn, e);

      informReaderError(conn);

      SourceContext.updateState(conn, ProtocolState.CLOSED);
      sourceConfiguration.getSourceConnections().shutDownConnection(conn);
    }
  }