I am building a CNC controller which has 1Gbps Ethernet interface for communction with a Desktop Windows. Right now I am using NPCap to implement a custom protocol to communicate between Windows and a CNC microcontroller for a high-performance link with low latency.
Problem: NPCAP is extremely slow. I benchmarked both the microcontroller firmware and NPCap. My microcontroller can easily go up to 700 Mbps in transmit and receive. But NPCap is giving me only 1 mbps transmit and 56 kbps receive. Is it that NPCAP itself is slow, or am I doing something wrong?
I see that Microsoft Winsock also allows some limited capabilities for RAW Ethernet. As of now, I haven't been able to get Winsock to work on my Windows application in SOCK_RAW mode. But before I go down the rabbit hole of using Winsock in RAW or give up and try to make my own network driver, I want to know if Winsock transfer speeds in SOCK_RAW are better than NPCap or are they similarly limited?
