Question

i have a simple server that accepts clients.
The client connect to the server. The first thing the server will do the following:

1. grab the client socket
2. create a thread for client
3. call ::recv();

the problem here is that recv returnes -1
WSAGetLastError returnes WSAENOTSOCK: (Socket operation on nonsocket.) Microsoft: “An operation was attempted on something that is not a socket. Either the socket handle parameter did not reference a valid socket, or for select, a member of an fd_set was not valid.” i can’t really figure out what the problem really is.

the client has the socket still valid , and any recv the client dose will instantly return

Thanks, Raxvan

Answer 1

OK, that’s easy.

In your code, you have

        inline sok  Accept()

that returns a sok by value.

Here you assign it to a local variable:

        sok client = listener.Accept();

and at the end of this expression, the temporary sok returned from Accept() gets destroyed. You might want to put a breakpoint or a debug print in sok::Close() to see what I mean with your own eyes.