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timing.h
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2001-07-02
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/***********************************************************************/
/* timing.h -- Functions related to computing scan timing (such as */
/* keeping track of and adjusting smoothed round trip times, */
/* statistical deviations, timeout values, etc. Various user options */
/* (such as the timing policy (-T)) also play a role in these */
/* calculations */
/* */
/***********************************************************************/
/* The Nmap Security Scanner is (C) 1995-2001 Insecure.Com LLC. 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 the Free Software Foundation; Version 2. This guarantees your */
/* right to use, modify, and redistribute this software under certain */
/* conditions. If this license is unacceptable to you, we may be */
/* willing to sell alternative licenses (contact sales@insecure.com). */
/* */
/* If you received these files with a written license agreement */
/* stating terms other than the (GPL) terms above, then that */
/* alternative license agreement takes precendence over this comment. */
/* */
/* Source is provided to this software because we believe users have */
/* a right to know exactly what a program is going to do before they */
/* run it. This also allows you to audit the software for security */
/* holes (none have been found so far). */
/* */
/* Source code also allows you to port Nmap to new platforms, fix */
/* bugs, and add new features. You are highly encouraged to send */
/* your changes to fyodor@insecure.org for possible incorporation */
/* into the main distribution. By sending these changes to Fyodor or */
/* one the insecure.org development mailing lists, it is assumed that */
/* you are offering Fyodor the unlimited, non-exclusive right to */
/* reuse, modify, and relicense the code. This is important because */
/* the inability to relicense code has caused devastating problems */
/* for other Free Software projects (such as KDE and NASM). Nmap */
/* will always be available Open Source. If you wish to specify */
/* special license conditions of your contributions, just say so */
/* when you send them. */
/* */
/* This program is distributed in the hope that it will be useful, */
/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU */
/* General Public License for more details ( */
/* http://www.gnu.org/copyleft/gpl.html ). */
/* */
/***********************************************************************/
/* $Id: timing.h,v 1.3 2001/07/02 09:38:14 fyodor Exp $ */
#ifndef NMAP_TIMING_H
#define NMAP_TIMING_H
#include "tcpip.h"
#include "global_structures.h"
/* Same as adjust_timeouts(), except this one allows you to specify
the receive time too (which could be because it was received a while
back or it could be for efficiency because the caller already knows
the current time */
void adjust_timeouts2(const struct timeval *sent,
const struct timeval *received,
struct timeout_info *to);
/* Adjust our timeout values based on the time the latest probe took for a
response. We update our RTT averages, etc. */
void adjust_timeouts(struct timeval sent, struct timeout_info *to);
/* Sleeps if necessary to ensure that it isn't called twice withen less
time than o.send_delay. If it is passed a non-null tv, the POST-SLEEP
time is recorded in it */
void enforce_scan_delay(struct timeval *tv);
#endif /* NMAP_TIMING_H */