Windows limitation on number of simultaneously opened sockets/connections per machine

Question

Let\'s say I have Windows 7 with one real network interface and few loopback interfaces. I have IOCP enabled server that accepts connections from clients. I\'m trying to sim

Answer 1

I've developed a load testing tool.

Running on Windows 10/16G RAM, it could created 60,000 connections with server successfully.

But when try to create more connections, the tool will report "socket WinError 10055 No Buffer Space Available" soon.

Accord to this article, I think the limitation is the overall socket buffer size of whole OS, not the number of opened file.