More tries to open a connection

Question

Hello, I have again a problem with my W5100 on the arduino 328P board. When I connect to my own TCP-Server written in C#, then the Webclient connects at the first try. But when I want to connect to my webserver, my client connects only after several (5- 15) tries. I don´t no what the problem is, can somebody help me? greets

hjjeon0608 · Answer

Hi, Could you post packet capture file with like wireshark?? It could help analyze problem. Best regards.

oadna · Answer

hi, here is the file. You have to filter by “ip.src==192.168.1.10 || ip.dst==192.168.1.10” I hope you can find the error. Edit: Can it be that the problem is the wrong port? I use port 23456 Which port should i use instead? greets w5100.zip (585 KB)

hjjeon0608 · Answer

Hi, I think 192.168.1.153 is server. If, client send SYN packet but cannot receive response packet(SYN-ACK). So, client send retransmission packet. Please, check server program and then let me know why server doesn’t send response. Best regards.