High-Flying
Low Power WiFi Module User Manual
Shanghai High-Flying Electronics Technology Co., Ltd
www.hi-flying.com
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2.9. SOCKET B Function
HF-LPB100 support double socket communication, the socket B function is disabled by
default.
After the module is started, send command “AT+SOCKB” to set the connection parameter,
send command “AT+TCPDISB=on” to try to connect with TCP server, the module will stop
connecting after three failures. Send command “AT+TCPDISB=on” to make connection.
Send command “AT+TCPDISB=off” to close connection. Send command “AT+TCPLKB” to
inqure TCP connection.
Figure 11. Socket B function demo
2.10. Multi-TCP Link Connection
When HF-LPB100 module configured as TCP Server, it supports Multi-TCP link connection,
and maximum 5 TCP clients permit to connect to HF-LPB100 module. User can realize multi-
TCP link connection at each work mode.
Multi-TCP link connection will work as following structure:
Upstream: All dates from different TCP connection or client will be transmitted to the serial
port as a sequence.
Downstream: All data from serial port (user) will be duplicate and broadcast to every TCP
connection or client.
Detailed multi-TCP link data transmition structure as following figure:
HF-SH01
