src/main/java/com/alipay/remoting/rpc/protocol/RpcRequestProcessor.java
private void timeoutLog(final RpcRequestCommand cmd, long currentTimestamp, RemotingContext ctx) {
        if (logger.isDebugEnabled()) {
            logger
                .debug(
                    "request id [{}] currenTimestamp [{}] - arriveTime [{}] = server cost [{}] >= timeout value [{}].",
                    cmd.getId(), currentTimestamp, cmd.getArriveTime(),
                    (currentTimestamp - cmd.getArriveTime()), cmd.getTimeout());
        }

        String remoteAddr = "UNKNOWN";
        if (null != ctx) {
            ChannelHandlerContext channelCtx = ctx.getChannelContext();
            Channel channel = channelCtx.channel();
            if (null != channel) {
                remoteAddr = RemotingUtil.parseRemoteAddress(channel);
            }
        }
        logger
            .warn(
                "Rpc request id[{}], from remoteAddr[{}] stop process, total wait time in queue is [{}], client timeout setting is [{}].",
                cmd.getId(), remoteAddr, (currentTimestamp - cmd.getArriveTime()), cmd.getTimeout());
    }
private void timeoutLog(final RpcRequestCommand cmd, long currentTimestamp, RemotingContext ctx) {
        if (logger.isDebugEnabled()) {
            logger
                .debug(
                    "request id [{}] currenTimestamp [{}] - arriveTime [{}] = server cost [{}] >= timeout value [{}].",
                    cmd.getId(), currentTimestamp, cmd.getArriveTime(),
                    (currentTimestamp - cmd.getArriveTime()), cmd.getTimeout());
        }

        String remoteAddr = "UNKNOWN";
        if (null != ctx) {
            ChannelHandlerContext channelCtx = ctx.getChannelContext();
            Channel channel = channelCtx.channel();
            if (null != channel) {
                remoteAddr = RemotingUtil.parseRemoteAddress(channel);
            }
        }
        logger
            .warn(
                "Rpc request id[{}], from remoteAddr[{}] stop process, total wait time in queue is [{}], client timeout setting is [{}].",
                cmd.getId(), remoteAddr, (currentTimestamp - cmd.getArriveTime()), cmd.getTimeout());
    }
print some log when request timeout and discarded in io thread.