Chengdu Ebyte Electronic Technology Co.,Ltd. E90-DTU(xxxSLxx-ETH)_V2.0 User Manual
Copyright ©2012–2023，Chengdu Ebyte Electronic Technology Co.,Ltd.
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4.6.4 UDP Client
UDP Client is a connectionless transport protocol that provides a simple transaction-oriented unreliable
messaging service with no connection establishment and disconnection, only the destination IP and destination port
need to be configured to send data to each other. It is typically used in data transfer scenarios where there is no
requirement for packet loss, where packets are small and sent quickly, and where the data is destined for a specified
IP.
In UDP Client mode, the device will only communicate with the configured (destination IP and destination
port) remote UDP device.
In this mode, the destination address is set to 255.255.255.255 and the sent data will be broadcasted in the
whole network segment, but the sending and receiving devices need to ensure that the ports are the same, and the
device can also receive broadcasted data.
4.6.5 HTTP Client
This mode can achieve HTTP automatic packet function, providing two modes GET and POST, customers can
configure URL, Header and other parameters by the device to send packets, to achieve fast communication between
the digital radio and HTTP server, using HTTP client mode is recommended to use random ports and open a short
connection to save HTTP server resources, the request single packet size is affected by LORA packet, when LORA
configured for 240 bytes packet, the single packet data can not be larger than 240.
(1), GET usage demonstration
Use OneNET multi-protocol access HTTP mode to test the device HTTP-GET request.
Through OneNET-HTTP access instructions query (does not provide support for the use of OneNET, the user
needs to query the use of the method, only to provide the parameters to fill in the instructions).
{
URL:/devices/863876867/datapoints?
Header:api-key:xxxxxxxxx (only demo instructions, users need to register their own accounts to use)
Host:api.heclouds.com
HTTP Server: api.heclouds.com
HTTP Port:80
Get send: datastream_id=char
}
The device needs to access the Internet, it is recommended to use dynamic IP acquisition to prevent the device
from accessing the network normally due to unreasonable parameter configuration, it is recommended to enable
short links to save server resources and open random ports (local port: 0), take the above configuration as an
example.
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