Socket - Ebyte ECAN-E01 User Manual

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成都亿佰特电子科技有限公司

ECAN-E01 用户使用说明书

4.1.1. SOCKET

ECAN-E01 can establish two sockets, namely Socket A1 and Socket B1. Among them, both channels support all

types of TCP Client, TCP Server, UDP Client, and UDP Server.

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

TCP Client

(1) TCP Client provides client connections for TCP network services. Actively initiate a connection request to the

server and establish a connection for realizing the interaction between CAN data and server data. According to the

relevant provisions of the TCP protocol, the TCP Client is the difference between connection and disconnection, so

as to ensure the reliable exchange of data. It is usually used for data interaction between devices and servers, and is

the most commonly used network communication method.

(2) When ECAN-E01 tries to connect to the server in TCP Client mode and the local port is 0, it will initiate a

connection with a random port every time.

(3) ECAN-E01 supports short connection function.

(4) Under the same local area network, if ECAN-E01 is set to static IP, please keep the IP of ECAN-E01 and the

gateway in the same network segment, and set the gateway IP correctly, otherwise it will not be able to

communicate normally.

TCP Server

(1) TCP Server is the TCP server. In TCP Server mode, ECAN-E01 listens to the local port, accepts and

establishes a connection for data communication when a connection request is sent. client device.

(2) It is usually used for communication with TCP clients in the local area network. It is suitable for scenarios

where there is no server in the local area network and there are multiple computers or mobile phones requesting

data from the server. Like TCP Client, there is a difference between connection and disconnection to ensure reliable

exchange of data.

(3) When ECAN-E01 is used as TCP Server, up to two-way Socket supports 14-way Client, and the local port

number is a fixed value and cannot be set to 0.

UDP Client

(1) UDP Client is a connectionless transmission protocol that provides transaction-oriented simple and unreliable

information transmission services. There is no connection establishment and disconnection, and data can be sent to

the other party only by specifying IP and port. It is usually used in data transmission scenarios where there is no

requirement for the packet loss rate, the data packets are small and the transmission frequency is fast, and the data

is to be transmitted to the specified IP.

(2) In UDP Client mode, ECAN-E01 will only communicate with the target port of the target IP. If the data does not

come from this channel, the data will not be received by ECAN-E01.

(3) In UDP Client mode, if the target address is set to 255.255.255.255, it can achieve the effect of UDP broadcast

on the entire network segment, and can also receive broadcast data. The ECAN-E01 module supports broadcast

within the network segment, such as xxx.xxx .xxx.255 broadcast method.

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