Function std::sys::windows::net::cvt

pub fn cvt<T: IsMinusOne>(t: T) -> Result<T>

🔬This is a nightly-only experimental API. (windows_net)

Checks if the signed integer is the Windows constant SOCKET_ERROR (-1) and if so, returns the last error from the Windows socket interface. This function must be called before another call to the socket API is made.