Why am I getting an exception on Windows 8 using raw sockets with IPPROTO_TCP?

Question

I was playing with raw sockets on my Windows 8 machine. I created a socket as follows:

s=socket(AF_INET,SOCK_RAW,IPPROTO_TCP)
s.bind((gethostname(),0)) s.ioctl(SIO_RCVALL,RCVALL_ON)

But on binding line python is throwing an exception as follows

OSError: [WinError 10022] An invalid argument was supplied

But with IPPROTO_UDP as the third argument, it's working fine.

I also have an AWS machine running Windows 10, on which it's working fine with same third argument (IPPROTO_TCP)

Why am I getting this error?

Answer 1

Found the reason from Microsoft documentation... https://learn.microsoft.com/en-us/windows/win32/winsock/tcp-ip-raw-sockets-2

TCP data cannot be sent over raw sockets.