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View Code? Open in Web Editor NEW:egg: Netty实践学习案例,见微知著!带着你的心,跟着教程。我相信你行欧。
License: Apache License 2.0
:egg: Netty实践学习案例,见微知著!带着你的心,跟着教程。我相信你行欧。
License: Apache License 2.0
if (!msg.variableHeader().isCleanSession()) { List<DupPublishMessageStore> dupPublishMessageStoreList = grozaDupPublishMessageStoreService.get(msg.payload().clientIdentifier()); List<DupPubRelMessageStore> dupPubRelMessageStoreList = grozaDupPubRelMessageStoreService.get(msg.payload().clientIdentifier()); dupPublishMessageStoreList.forEach(dupPublishMessageStore -> { MqttPublishMessage publishMessage = (MqttPublishMessage) MqttMessageFactory.newMessage( new MqttFixedHeader(MqttMessageType.PUBLISH, true, MqttQoS.valueOf(dupPublishMessageStore.getMqttQoS()), false, 0), new MqttPublishVariableHeader(dupPublishMessageStore.getTopic(), dupPublishMessageStore.getMessageId()), Unpooled.buffer().writeBytes(dupPublishMessageStore.getMessageBytes()) ); channel.writeAndFlush(publishMessage); }); dupPubRelMessageStoreList.forEach(dupPubRelMessageStore -> { MqttMessage pubRelMessage = MqttMessageFactory.newMessage( new MqttFixedHeader(MqttMessageType.PUBREL, true, MqttQoS.AT_MOST_ONCE, false, 0), MqttMessageIdVariableHeader.from(dupPubRelMessageStore.getMessageId()), null ); channel.writeAndFlush(pubRelMessage); }); }
清理会话标志位设置为保存会话,设备连接成功后,为什么是“重发同一clientId存储的未完成的QoS1和QoS2的DUP消息”?我查看mqtt3.3.1文档时,发现是这么说的“清理会话标志设置为0的客户端会收到所有在它连接断开期间发布的QoS 1和QoS 2级别的消息”。但是代码里的实现,写的是发布该设备未完成的消息出去,而不是接收在断开连接期间的消息。
请问你博客上那只黑猫是怎么弄的.....
在MqttServer中,我消除心跳那行注释的时候,用mqtt客户端工具连接,就会出现连接丢失错误,请问大佬这是什么情况
前辈,现在netty+mqtt 服务端支持ssl/tls 认证吗?感觉安全性方面需要
helloworld里的ServerInitializer.java
private static final ServerHandler SERVER_HANDLER = new ServerHandler();
这里用了static final,所以这个server只能连接一次,客户端断开就再也连不上了。
大佬,java做物联网怎么入门啊,我目前一直在做javaweb开发,想转型下.
是不是要自己买硬件连一下啊?求给个方向啊,光写netty没实践感觉用不上啊
感谢您的分享,有如下问题想要请教:
1。请问mqtt中的kafka是什么作用呢,消息不是已经通过channel发送给client了么,为什么kafka也要发呢
2.im那个项目登陆校验放在在pipline中后面的消息不是登陆的LoginRequestPacket怎么处理的呢
不好意思,刚刚开始看这个mqtt的工程,MqttTransportHandler 为什么要加上共享这个handler注解? 这样做线程安全怎么保证吗?
作者您好,我现在正在使用你的netty+mqtt实现服务端做练习,想请教一下如何实现集群,有没有相应的例子?
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