#include "tclWinInt.h"

#ifdef _MSC_VER
#   pragma comment (lib, "ws2_32")
#endif

/*
 * Support for control over sockets' KEEPALIVE and NODELAY behavior is
 * currently disabled.
 */

#undef TCL_FEATURE_KEEPALIVE_NAGLE

/*
 * Helper macros to make parts of this file clearer. The macros do exactly
 * what they say on the tin. :-) They also only ever refer to their arguments
 * once, and so can be used without regard to side effects.
 */

#define SET_BITS(var, bits)	((var) |= (bits))

 *
 * Results:
 * 	0 if the connection has completed, -1 if still in progress or there is
 * 	an error.
 *
 * Side effects:
 *	Processes socket events off the system queue. May process
 *	asynchroneous connect.
 *	asynchronous connect.
 *
 *----------------------------------------------------------------------
 */

static int
WaitForConnect(
    TcpState *statePtr,		/* State of the socket. */

 */

static int
TcpSetOptionProc(
    ClientData instanceData,	/* Socket state. */
    Tcl_Interp *interp,		/* For error reporting - can be NULL. */
    const char *optionName,	/* Name of the option to set. */
    TCL_UNUSED(const char *) /*value*/)		/* New value for option. */
    const char *value)		/* New value for option. */
{
#ifdef TCL_FEATURE_KEEPALIVE_NAGLE
    TcpState *statePtr = instanceData;
    TcpState *statePtr = (TcpState *)instanceData;
    SOCKET sock;
#else
    (void)instanceData;
#endif /*TCL_FEATURE_KEEPALIVE_NAGLE*/
    size_t len = 0;

    if (optionName != NULL) {
	len = strlen(optionName);
    }

    /*
     * 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()) {
	if (interp) {
	    Tcl_SetObjResult(interp, Tcl_NewStringObj(
		    "winsock is not initialized", -1));
	}
	return TCL_ERROR;
    }

#ifdef TCL_FEATURE_KEEPALIVE_NAGLE
#error "TCL_FEATURE_KEEPALIVE_NAGLE not reviewed for whether to treat statePtr->sockets as single fd or list"
    sock = statePtr->sockets->fd;

    if ((len > 1) && (optionName[1] == 'k') &&
    if (!strcasecmp(optionName, "-keepalive")) {
	BOOL val = FALSE;
	    (strncmp(optionName, "-keepalive", len) == 0)) {
	BOOL val;
	int boolVar, rtn;

	if (Tcl_GetBoolean(interp, value, &boolVar) != TCL_OK) {
	    return TCL_ERROR;
	}
	if (boolVar) {
	    val = TRUE;
	val = boolVar ? TRUE : FALSE;
	}
	rtn = setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE,
		(const char *) &val, sizeof(BOOL));
	if (rtn != 0) {
	    Tcl_WinConvertError(WSAGetLastError());
	    if (interp) {
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"couldn't set socket option: %s",
			Tcl_PosixError(interp)));
	    }
	    return TCL_ERROR;
	}
	return TCL_OK;
    }
    if ((len > 1) && (optionName[1] == 'n') &&
    } else if (!strcasecmp(optionName, "-nagle")) {
	BOOL val = FALSE;
	(strncmp(optionName, "-nagle", len) == 0)) {
	BOOL val;
	int boolVar, rtn;

	if (Tcl_GetBoolean(interp, value, &boolVar) != TCL_OK) {
	    return TCL_ERROR;
	}
	if (!boolVar) {
	    val = TRUE;
	val = boolVar ? FALSE : TRUE;
	}
	rtn = setsockopt(sock, IPPROTO_TCP, TCP_NODELAY,
		(const char *) &val, sizeof(BOOL));
	if (rtn != 0) {
	    Tcl_WinConvertError(WSAGetLastError());
	    if (interp) {
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"couldn't set socket option: %s",
			Tcl_PosixError(interp)));
	    }
	    return TCL_ERROR;
	}
	return TCL_OK;
    }

    return Tcl_BadChannelOption(interp, optionName, "keepalive nagle");
#else
    return Tcl_BadChannelOption(interp, optionName, "");
#endif /*TCL_FEATURE_KEEPALIVE_NAGLE*/
}

/*
 *----------------------------------------------------------------------
 *
 * TcpGetOptionProc --
 *

		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"can't get sockname: %s", Tcl_PosixError(interp)));
	    }
	    return TCL_ERROR;
	}
    }

#ifdef TCL_FEATURE_KEEPALIVE_NAGLE
    if (len == 0 || !strncmp(optionName, "-keepalive", len)) {
    if ((len == 0) || ((len > 1) && (optionName[1] == 'k') &&
	    (strncmp(optionName, "-keepalive", len) == 0))) {
	int optlen;
	BOOL opt = FALSE;

	if (len == 0) {
	    sock = statePtr->sockets->fd;
	    Tcl_DStringAppendElement(dsPtr, "-keepalive");
	}
	optlen = sizeof(BOOL);
	getsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, (char *)&opt, &optlen);
	if (opt) {
	    Tcl_DStringAppendElement(dsPtr, "1");
	} else {
	    Tcl_DStringAppendElement(dsPtr, "0");
	Tcl_DStringAppendElement(dsPtr, opt ? "1" : "0");
	if (len > 0) {
	    return TCL_OK;
	}
    }

    if ((len == 0) || ((len > 1) && (optionName[1] == 'n') &&
	    (strncmp(optionName, "-nagle", len) == 0))) {
	int optlen;
	BOOL opt = FALSE;

	if (len == 0) {
	    sock = statePtr->sockets->fd;
	    Tcl_DStringAppendElement(dsPtr, "-nagle");
	}
	optlen = sizeof(BOOL);
	getsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (char *)&opt, &optlen);
	Tcl_DStringAppendElement(dsPtr, opt ? "0" : "1");
	if (len > 0) {
	    return TCL_OK;
	}
    }

    if (len == 0 || !strncmp(optionName, "-nagle", len)) {
	int optlen;
	BOOL opt = FALSE;

	if (len == 0) {
	    Tcl_DStringAppendElement(dsPtr, "-nagle");
	}
	optlen = sizeof(BOOL);
	getsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (char *)&opt, &optlen);
	if (opt) {
	    Tcl_DStringAppendElement(dsPtr, "0");
	} else {
	    Tcl_DStringAppendElement(dsPtr, "1");
	}
	if (len > 0) {
    if (len > 0) {
	    return TCL_OK;
	}
    }
#endif /*TCL_FEATURE_KEEPALIVE_NAGLE*/

    if (len > 0) {
#ifdef TCL_FEATURE_KEEPALIVE_NAGLE
	return Tcl_BadChannelOption(interp, optionName,
		"connecting peername sockname keepalive nagle");
#else
	return Tcl_BadChannelOption(interp, optionName,
                "connecting peername sockname");
		"connecting keepalive nagle peername sockname");
#endif /*TCL_FEATURE_KEEPALIVE_NAGLE*/
    }

    return TCL_OK;
}

/*
 *----------------------------------------------------------------------

    ClientData *handlePtr)	/* Where to store the handle. */
{
    TcpState *statePtr = (TcpState *)instanceData;

    *handlePtr = INT2PTR(statePtr->sockets->fd);
    return TCL_OK;
}



/*
 *----------------------------------------------------------------------
 *
 * TcpConnect --
 *
 *	This function opens a new socket in client mode.

	    if (bind(statePtr->sockets->fd, statePtr->myaddr->ai_addr,
		    statePtr->myaddr->ai_addrlen) == SOCKET_ERROR) {
		Tcl_WinConvertError((DWORD) WSAGetLastError());
		continue;
	    }

	    /*
	     * For asynchroneous connect set the socket in nonblocking mode
	     * For asynchronous connect set the socket in nonblocking mode
	     * and activate connect notification
	     */

	    if (async_connect) {
		TcpState *statePtr2;
		int in_socket_list = 0;

                 */

		SetEvent(tsdPtr->socketListLock);
	    }

	    /*
	     * Clear the tsd socket list pointer if we did not wait for
	     * the FD_CONNECT asynchroneously
	     * the FD_CONNECT asynchronously
	     */

	    tsdPtr->pendingTcpState = NULL;

	    if (Tcl_GetErrno() == 0) {
		goto out;
	    }