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Topic: Ethernet shield TCP client-server communication issues (Read 127 times) previous topic - next topic


Hello everyone,

I am trying to understand how to use more effectively the W5100 shield in my Arduino aplications.

I built a simple Mega2560 + Ethernet shield TCP client that connects to a TCP server running on my PC via my home LAN.

here is the config:

Client: IP

TCP listen on port 51000

The client connects to server, then sends a string, and receives a response - also string.

It works, but when I run the wireshark I see strange messages going there, like retransmissions, segment not captured, ACKed unseen segment, and [RST]. (see attached screenshot)

I find it odd to have this on such simple connection.

Is this normal or do I have to tweak something in the code or there might be another issue?


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