SetHandleInformation((HANDLE) sock, HANDLE_FLAG_INHERIT, 0);

	    /*
	     * Set kernel space buffering
	     */

	    TclSockMinimumBuffers((ClientData)sock, TCP_BUFFER_SIZE);

	    /*
	     * Make sure we use the same port when opening two server sockets
	     * for IPv4 and IPv6.
	     *
	     * As sockaddr_in6 uses the same offset and size for the port
	     * member as sockaddr_in, we can handle both through the IPv4 API.

		SetHandleInformation((HANDLE) sock, HANDLE_FLAG_INHERIT, 0);

		/*
		 * Set kernel space buffering
		 */

		TclSockMinimumBuffers((ClientData)sock, TCP_BUFFER_SIZE);

		/*
		 * Try to bind to a local port.
		 */

		if (bind(sock, myaddrPtr->ai_addr, myaddrPtr->ai_addrlen)
		    == SOCKET_ERROR) {

    tsdPtr = TclThreadDataKeyGet(&dataKey);

    /*
     * Set kernel space buffering and non-blocking.
     */

    TclSockMinimumBuffers((ClientData) sock, TCP_BUFFER_SIZE);

    infoPtr = NewSocketInfo((SOCKET) sock);

    /*
     * Start watching for read/write events on the socket.
     */

 * Side effects:
 *	As defined for each function.
 *
 *----------------------------------------------------------------------
 */

int
TclWinGetSockOpt(
    SOCKET s,
    int level,
    int optname,
    char * optval,
    int FAR *optlen)
{
    /*
     * Check that WinSock is initialized; do not call it if not, to prevent
     * system crashes. This can happen at exit time if the exit handler for
     * WinSock ran before other exit handlers that want to use sockets.
     */

    if (!SocketsEnabled()) {
	return SOCKET_ERROR;
    }

    return getsockopt(s, level, optname, optval, optlen);
}

int
TclWinSetSockOpt(
    SOCKET s,
    int level,
    int optname,
    const char * optval,
    int optlen)
{
    /*
     * Check that WinSock is initialized; do not call it if not, to prevent
     * system crashes. This can happen at exit time if the exit handler for
     * WinSock ran before other exit handlers that want to use sockets.
     */