@Override
    public void handleRequest(final RpcContext rpcCtx, final PingRequest request) {
        rpcCtx.sendResponse( //
            RpcFactoryHelper //
                .responseFactory() //
                .newResponse(RpcRequests.ErrorResponse.getDefaultInstance(), 0, "OK"));
    }
Ping request processor.

@author boyan (boyan@alibaba-inc.com)
@author jiachun.fjc
jraft-core/src/main/java/com/alipay/sofa/jraft/rpc/impl/PingRequestProcessor.java