TCP not established

Network Module WIZ820io
1

Hi,

I test Wiz820io TCP client mode connect to PC.
My config

GW = 192.168.1.1 (Router IP Address)
MAC = 00:00:55:55:AA:AA
IP = 192.168.1.15
Subnet = 255.255.255.0

Socket connect to
IP = 192.168.1.13
Subnet = 255.255.255.0
Port = 55057

When send CR = 1, socket status change from SOCK_INIT to SOCK_CLOSE_WAIT
and automatic change to SOCK_CLOSE.

Result packet monitor by wireshark is attach.

How to fix this problem ?.
Thanks in advance

1052×206 16.6 KB

2

Hi,
Did you capture the network packet without filtering?

TCP connection consists of 3-way handshake protocol as the following.

[CLIENT]       [SERVER]
<SYN> ------------------->
<--------------<SYN/ACK>
<ACK>------------------->

I can’t find the SYN/ACK packet in your captured packet.

Plz, post the original capture file without fitering instead of image file.

Thank you.

3

Hi midnightcow,

Problem is fix.
Program on PC that use for TCP server have some problem.
For test TCP connect to FileZilla FTP server is work correctly.

Thank you.