Ebyte E810-DTU User Manual

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Ebyte E810-DTU User Manual Manual pdf 10 page image

Chengdu Ebyte Electronic Technology Co.,Ltd E810-DTU(1RS1E) User ManualCopyright ©2012–2019, Chengdu Ebyte Electronic Technology Co.,Ltd 93.3.3 UDP Client function(1) UDP Client is a connectionless transmission protocol that provides a transaction-oriented simple and unreliable informationtransmission service. Without the establishment and disconnection of a connection, only the IP and port need to be established t o senddata to the other party. It is usually used for data transmission scenarios where the packet loss rate is not required, the data packet issmall and the transmission frequency is fast, and the data is transmitted to the specified IP.(2) In UDP Client mode, E810-TTL will only communicate with the target port of the target IP. If the data is not from thischannel, the data will not be received by E810-TTL.(3) In the UDP client mode, the destination address is set to 255.255.255.255, which can achieve the effect of UDP full networksegment broadcast, and can also receive broadcast data. The E810-TTL module supports broadcast in the supported network segment,such as the broadcast method of .xxx.255.3.3.4 UDP Server function(1) UDP Server means that the source IP address is not validated on the basis of ordinary UDP. After receiving a UDP packet,the target IP is changed to the data source IP and port number. When sending data, the IP and port number is sent to the nearestcommunication.(2) This mode is usually used in data transmission scenarios where multiple network devices need to communicate withmodules and do not want to use TCP because of its fast speed and frequency.Note: UDP Server cannot send data on its own initiative. Only after receiving data can it send data to IP and ports that haverecently interacted with data.