1.消息队列遥测传输(MQTT)：
它是由 Andy Standford-Clark 和 Arlen Nipper 创建的。它是一种基于发布/订阅模型的物联网交互协议。该模型是提供对 QoS(服务质量)支持的简单模型。由于它的能力，它可以在每一秒的基于物联网的设备中找到。该协议具有许多功能，因为它基于 TCP 并使用 SSL/TLS 来确保安全。对于服务器之间的消息传递，它使用 CONNECT、PUBLISH、SUBSCRIBE、DISCONNECT 等。
2. 超文本传输协议(HTTP)：
万维网 (WWW) 使用它来定义其消息将如何传输和格式化。该协议负责服务器在通过网络发送信息时必须采取的行动。当一个 URL 被输入浏览器时，这个协议会向服务器发送一个 HTTP 请求，然后一个 HTTP 响应被发送回浏览器。该协议还负责控制万维网上网页的格式和表示。
MQTT 和 HTTP 协议的区别：
| Parameter | MQTT | HTTP |
|---|---|---|
| Abbrevation | Message Queuing Telemetry Transport | Hyper Text Transfer Protocol |
| Architecture | It works on publish/subscribe model. | It works on request/response model. |
| Complexity | It has less complexity. | It is more complex. |
| Runs over | It runs over Transmission Control Protocol. | It runs over User Datagram Protocol. |
| Protocol Design | This protocol’s design is Data centric. | This protocol’s design is Document centric. |
| Message Size | The message size generated is less as it uses binary format. | The message size generated is more as it uses ASCII format. |
| Header Size | It is of 2 bytes. | It is of 8 bytes. |
| Port Number | It works on 1883 port. | It works on 80 or 8080 port. |
| Data Security | It provides data security with SSL/TLS. | It does not provide security but Https is built for that. |