[UDP] UDP Packet data (CoAP protocol)

UDP Machine Control Project

Protocol Message Format:

Ver + T + TKL + Code + MessageID + 11111111 + Command + Payload /c1>

01 + (00 | 01 | 02 | 03) + (000000)

The E0 4C 1E 5C 4C//dev->ser Device Login Request: message number: 0, ID is xx E0 4C1E,5C

The FF E0 4C 1E 5C 4C//ser->dev Server login response: message number: 0, the ID is xx E0 4C1E 5C 4C

E0 4C 1E 5C 4C//Dev->ser device Logout Request: message number: 1, id is xx E0 4C1E 5C 4C

The FF E0 4C 1E 5C 4C//Ser->dev Server Logout response: message number: 1, ID is xx E0 4C1E 5C /c13>

E0 4C 1E 5C 4C//Dev->ser device Heartbeat request: message No.: 2, ID is E0 4C1E,5C 4C

Server not responding in protocol

3, FF. E0 4C 1E 5C 4C//dev->ser device Data escalation request: message no .: /c7>

E0 4C 1E 5C 4C//ser->dev Server Data escalation response: message No.: 3, ID is E0 4C 1E, 5C 4c

The FF E0 4C 1E 5C 4C//dev->ser app control device request: message number: 4, ID is xx E0 4C 1E 5C 4C

E0 4C 1E 5C 4C//Ser->dev Device response App control: Message No.: 4, ID is E0 4C 1E/5C 4C

1. The server side returns a response message ID that matches the message ID sent by the device
2. Device ID using the MAC address form, the device's unique identifier
3. Device login successful, return response; fail, no response; Exit for the same processing
4. Heartbeat, 1 minutes hair once, 5 seconds did not receive your response, I will repeat the hair, 5 times in a row without your response, I will re-login

Exception (to be considered, what should be added to the exception to ensure the mechanism)

1. After landing, in case the network is disconnected. For example, if your display device is already logged in, what will you do if I log in again?

Message data

40020000ff01000c0157a42ee900010203040500

[UDP] UDP Packet data (CoAP protocol)