public static unsafe InnerSafeCloseSocket CreateSocket(AddressFamily addressFamily, SocketType socketType, ProtocolType protocolType)
{
int af = SocketPal.GetPlatformAddressFamily(addressFamily);
int sock = SocketPal.GetPlatformSocketType(socketType);
int pt = (int)protocolType;
int fd = Interop.libc.socket(af, sock, pt);
if (fd != -1)
{
// The socket was created successfully; make it non-blocking and enable
// IPV6_V6ONLY by default for AF_INET6 sockets.
int err = Interop.Sys.Fcntl.SetIsNonBlocking(fd, 1);
if (err != 0)
{
Interop.Sys.Close(fd);
fd = -1;
}
else if (addressFamily == AddressFamily.InterNetworkV6)
{
int on = 1;
err = Interop.libc.setsockopt(fd, Interop.libc.IPPROTO_IPV6, Interop.libc.IPV6_V6ONLY, &on, (uint)sizeof(int));
if (err != 0)
{
Interop.Sys.Close(fd);
fd = -1;
}
}
}
var res = new InnerSafeCloseSocket();
res.SetHandle((IntPtr)fd);
return(res);
}