W5500 FIN packet

If it is critical then you need further troubleshooting. It can be network issue, it can be network driver issue, issue with server setup etc. But deeper troubleshooting will need information like network topology, operating systems running, several tests like using Wireshark.

tomorrow i will install Wireshark, :)) thanks again ))

Hello, with remote server SYN packet is received by server, but in my side SYN-ACK packet is not recevied, in local network all is working perfectly, i think that is network issue

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Hello all, how can i make multiple connection on same port in server mode, if all sockets have the same port number, client request will get all sockets

No, only one socket will be bound to the connection, but you can not know which one if you are listening with more than one socket.

if it is so, i can check connection state and determine connected socket ))

for testing i opened 2 socket for listening, unfortunately client connected to both socket ((

Of course, first request went with getting web page contents, another went with favicon.ico which is automatically requested by the Chrome (or other browser).

thank u very much :slight_smile:, i modified a little bit my code an it is working with 8 socket :slight_smile: