Re: [lwip-users] How to build a simple TCP [...]

[Antonio de Angelis]

Thank you for reply and I apologize for the style of my previous mail, 
I'm sorry, but it's the first time that I write code in a mailing list 
:-)  I've tried to connect to a server different from the server process 
that I've created, a common server on Internet (www.telecom.it) and the 
client works! I can't understand why it doesn't work when I try to 
connect using the client to my server process!!! I've launched Wireshark 
and observed that when I try to connect to my server with my client, 
there are only ARP requests of the type "Who has 192.168.1.200? Tell 
192.168.1.201" and the reply that specifies the correct MAC address 
associated to 192.168.1.200. I can't see the SYN segment sent in 
Wireshark, but if I debug the code, after calling tcp_connect, the state 
in the pcb structure associated with the connection is SYN SENT... 
Please can someone help me? Thank you! :-)

Antonio de Angelis


address@hidden ha scritto:
> Antonio de Angelis wrote:
> > [lengthy post...]
> >   
> First of all, your mail is very difficult to read if you mix such long 
> code passages with the actual questions you want to ask. Chances you 
> get a response are higher if the problem is expalined shortly and code 
> is put at the end of the mail.
>
> As to your problem: I don't really know why this doesn't work, I 
> already did such a setup on my PC. Did you try your client application 
> to connect to some other (non lwIP) server? Maybe even outside your 
> PC? If you still have problems, you can try to use wireshark to 
> monitor the ethernet packets sent on the network. Maybe that helps to 
> find the problem.
>
> Simon
>
>
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