TCP port closed

Question

Hy All, I initialized my wizfi310 module to TCP server mode. When i try to connect its all ok, the wizfi310 module send back messages to me: [CONNECT 1] [DISCONNECT 1] When i start the Advanced port scanner, scan ports i get a following messages: [CONNECT 1] [DISCONNECT 0] [DISCONNECT 1] Why i got [DISCONNECT 0]? After that, i cant connect to module. Its port 2020 is closed. Need to reinitialize and working again. Here is my initialization: WizFi310 Version 1.0.3.3 (WIZnet Co.Ltd) AT+MECHO=0 AT+MECHO=0 [OK] AT+WSET=0,[SSID], [OK] AT+WSEC=0,[password] [OK] AT+WNET=1 [OK] AT+SCON=S,TSN,2020,1 [OK] AT+WJOIN [Link-Up Event] IP Addr : 192.168.0.114 Gateway : 192.168.0.1 [OK] Best Regards: ExtSol

wizdaniel · Answer

Hi ExtSol: [CONNECT 1] [DISCONNECT 0] [DISCONNECT 1] Why i got [DISCONNECT 0]? After that, i cant connect to module. Its port 2020 is closed. The message [DISCONECT 0] displayed when your server is down. The messages [CONECT 1] , [DISCONECT 1] displayed when TCP Client is connected/disconnected. could you please test the TCP Server as Command mode for Advanced port scanner? because I tested one of port scanner on the internet(https://www.advanced-port-scanner.com/) that tool tried multiple connection to the Module during the port scan like below. so, as your Data mode of your module, your module can keep only 1 connection because of Data mode. so please test it again with Command mode. at+scon=o,tsn,,,2020,0