Hi, right now I'm trying to implement the lwIP stack into the SMT32F4 to program a kind of TCP chat between a µc and a PC. With the Raw TCP.
I founded an example for a TCP-echo-client from st I think. When I compile it and run it on my µc everything is ok, but when i capture the communication with wireshark I see that the µc (IP: 192.168.1.5) sends an error: - Header checksum: 0x0000 [incorrect, should be 0x0d6f (maybe caused by "IP checksum offload"?) Here is an image from the program: http://blog.robertoromo.eu/wp-content/uploads/2012/02/checksum_error.png I have to questions: 1) is this error in the stack? or in the example I got? 2) does anybody knows I could I get it away? I have already read the "Design and Implementation of the lwIP TCP/IP Stack" from Adam Dunkels and the " Raw/TCP - WIKI " and really helped to build a small structure of what my project needs. Does anyone knows about more literature of implementations of the stack or an example for a "Chat" (With this I mean that, messages could be send at random times from client or server) (Sorry about my English) Regards Robert _______________________________________________ lwip-users mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/lwip-users
