/*
protocol_misc.c -- handle the meta-protocol, miscellaneous functions
- Copyright (C) 1999-2003 Ivo Timmermans <ivo@o2w.nl>,
- 2000-2003 Guus Sliepen <guus@sliepen.eu.org>
+ Copyright (C) 1999-2005 Ivo Timmermans,
+ 2000-2006 Guus Sliepen <guus@tinc-vpn.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: protocol_misc.c,v 1.1.4.12 2003/07/22 20:55:20 guus Exp $
+ $Id$
*/
#include "system.h"
#include "protocol.h"
#include "utils.h"
+int maxoutbufsize = 0;
+
/* Status and error notification routines */
-bool send_status(connection_t *c, int statusno, char *statusstring)
+bool send_status(connection_t *c, int statusno, const char *statusstring)
{
cp();
return true;
}
-bool send_error(connection_t *c, int err, char *errstring)
+bool send_error(connection_t *c, int err, const char *errstring)
{
cp();
{
cp();
- /* Evil hack. */
+ /* If there already is a lot of data in the outbuf buffer, discard this packet.
+ We use a very simple Random Early Drop algorithm. */
+
+ if(2.0 * c->outbuflen / (float)maxoutbufsize - 1 > (float)rand()/(float)RAND_MAX)
+ return true;
if(!send_request(c, "%d %hd", PACKET, packet->len))
return false;
- return send_meta(c, packet->data, packet->len);
+ return send_meta(c, (char *)packet->data, packet->len);
}
bool tcppacket_h(connection_t *c)