第一步：

终端发送： 198 bytes 

 

终端接收：2920 bytes

 

第二步：

终端接受：1615 bytes

终端发送：342 bytes

终端接收：75 bytes

 

Recv 1615 bytes 61.178.105.248:30001

wait to send data to POS

Send 1615 bytes 192.168.43.167:51044

Recv 342 bytes 192.168.43.167:51044

wait to send data to bank server

Send 342 bytes 61.178.105.248:30001

Recv 75 bytes 61.178.105.248:30001

wait to send data to POS

Send 75 bytes 192.168.43.167:51044

Recv 2053 bytes 192.168.43.167:51044

wait to send data to bank server

Send 2053 bytes 61.178.105.248:30001

Recv 869 bytes 61.178.105.248:30001

wait to send data to POS

Send 869 bytes 192.168.43.167:51044