Tag Archives: HTTPS

Common Message Protocols Used in IoT

1. MQTT(Message Queuing Telemetry Transport)
2. HTTP/HTTPS
3. AMQP(Advanced Message Queuing Protocol)
4. CoAP(Constrained Application Protocol )
5. STOMP (Simple (or Streaming) Text Oriented Message Protocol)
6. DDS (Data Distribution Service)
7. XMPP (Extensible Messaging and Presence Protocol)
8. SSE (Server-Sent Events)
9. LwM2M or Lightweight M2M

Details about some most commonly used protocols

	MQTT	HTTP/HTTPS	CoAP
Latest version	5.0	2.0	RFC 7252
IP Suite	TCP/IP	TCP/IP	UDP (no Handshake or delivery acknowledgement)
Security	SSL/TLS but weak authentication. Additional security can be added.	TLS/SSL	DTLS(Data gram TLS) & IPSec
Commercial/Open Source	Open	Open	Open
Scalability	Yes	Yes	Yes
Throughput (msg/sec)	Fast	Fast	Fast (better than MQTT, HTTP & AMQP)
Latency	Low but more than AMQP & CoAP & HTTP	Low but more than AMQP & CoAP	Very Low
Power Consumption	Low	High (more than MQTT)	Low
Memory Consumption	Low	High (more than MQTT)	Low

	AMQP	DDS	XMPP
Latest version	5.0.9	2.3	RFC 6120,RFC 6121 and RFC 7622
IP Suite	TCP/IP	TCP/IP, UDP, Shared Memory	TCP/IP
Security	TLS extensions, including SNI, and SASL (better than MQTT)	TLS, DTLS	TLS, SASL (secure authentication)
Commercial/Open Source	Open	Both Open & Commercial	Open Source
Scalability	Yes	Yes	Yes
Throughput (msg/sec)	Fast (better than MQTT & HTTP)	Very Fast as it is used for real time data transfer.	Fast (used for instant messaging, chat & video chat)
Latency	Very Low	Very Low	Low
Power Consumption	Low (More than MQTT)	Not very high, it is used in IoT devices	Need more power as compared to other protocols
Memory Consumption	Low(More than MQTT)	Not very high, it is used in IoT devices	Need more power as compared to