TCP is Now Working as Well!

As I was traversing my mental decision tree using a depth-first search model of digger deeper and deeper in to the lwip TCP/IP source code, I thought to myself that I should go back up the decision tree and take a deeper look at the tcpdump output.

It turns out I was setting the source and destination IP addresses to the same value. Once I set the source IP address to NULL, the TCP/IP stack auto-binded it to the IP address of the MAC and all communications started working.

Now I will do some code cleanup, will push to github and then get started on a simple demo of how this works.

After that… I will put this logic inside the FPGA and show how this can help you with your trading applications.

Code is a work-in-progress and is on the addTcp branch

https://github.com/fpganow/MicroBlaze_lwIP/tree/addTcp

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