Do I have to bind a UDP socket in my client program to receive data? (I always get WSAEINVAL)

Question

I am creating a UDP socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP) via Winsock and trying to recvfrom on this socket, but it a

Answer 1

Here it says the following:

Parameters

s [in]: A descriptor identifying a bound socket.

...

Return Value

WSAEINVAL: The socket has not been bound with bind, or an unknown flag was specified, or MSG_OOB was specified for a socket with SO_OOBINLINE enabled, or (for byte stream-style sockets only) len was zero or negative.

As far as I remember bind is not required for a UDP socket because a bind call is made for you by the stack. I guess it's a Windows thing to require a bind on a socket used in a recvfrom call.