Tcl_Channel
Tcl_OpenTcpServerEx(
    Tcl_Interp *interp,		/* For error reporting - may be NULL. */
    const char *service,	/* Port number to open. */
    const char *myHost,		/* Name of local host. */
    unsigned int flags,		/* Flags. */
    int backlog,                /* Length of OS listen backlog queue, or -1
                                 * for default. */
    Tcl_TcpAcceptProc *acceptProc,
				/* Callback for accepting connections from new
				 * clients. */
    ClientData acceptProcData)	/* Data for the callback. */
{
    SOCKET sock = INVALID_SOCKET;
    unsigned short chosenport = 0;

	/*
	 * Set the maximum number of pending connect requests to the max
	 * value allowed on each platform (Win32 and Win32s may be
	 * different, and there may be differences between TCP/IP stacks).
	 */

        if (backlog < 0) {
            backlog = SOMAXCONN;
        }
	if (listen(sock, SOMAXCONN) == SOCKET_ERROR) {
	if (listen(sock, backlog) == SOCKET_ERROR) {
	    TclWinConvertError((DWORD) WSAGetLastError());
	    closesocket(sock);
	    continue;
	}

	if (statePtr == NULL) {
	    /*