Product Function; Basic Function; Socket; Tcp Client - Ebyte E90-DTU User Manual

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Chengdu Ebyte Electronic Technology Co., Ltd

3 Product function

3.4

→Ethernet

E90-DTU-(400SL30-ETH) can establish two Sockets, namely Socket A1 and Socket B1. Among them, Socket A1 supports TCP

Client, TCP Server, UDP Client, and UDP Server. Socket B1 only supports TCP Client, UDP Client, and UDP Server.

Two Sockets run simultaneously. It can be connected to different networks at the same time for data transmission.

(1) The TCP Client provides a client connection for the TCP network service. Proactively initiate a connection request to the server

and establish a connection for interaction between the wireless data and the server data. According to the relevant provisions of the

TCP protocol, the TCP Client has the difference of connection and disconnection, thereby ensuring reliable exchange of data. It is

commonly used for data interaction between devices and servers and is the most commonly used method of networked

communication.

(2) E90-DTU-(400SL30-ETH) When attempting to connect to the server in TCP Client mode and the local port is 0, the connection

is initiated with a random port each time.

(3) E90-DTU-(400SL30-ETH) supports short connection function.

(4) Under the same LAN, if E90-DTU-(400SL30-ETH) is set to static IP, please keep the IP and gateway of

E90-DTU-(400SL30-ETH) on the same network segment, and set the gateway IP correctly, otherwise Will not communicate properly.

(1) TCP Server is a TCP server. In TCP Server mode, E90-DTU-(400SL30-ETH) listens to the local port, accepts and establishes

connection for data communication when the connection request is sent. When E90-DTU-(400SL30-ETH) receives the data, it will be

Send data to all client devices that are connected to the E90-DTU-(400SL30-ETH).

(2) Usually used for communication with TCP clients in the LAN. It is suitable for scenarios where there is no server in the LAN

and there are multiple computers or mobile phones requesting data from the server. As with TCP Client, there is a difference between

E90-DTU(400SL30-ETH) User Manual

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