
/***********************************************************************/
/* 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    */
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/*  alternative license agreement takes precendence over this comment. */
/*                                                                     */
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/*  holes (none have been found so far).                               */
/*                                                                     */
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/*                                                                     */
/*  This program is distributed in the hope that it will be useful,    */
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/*                                                                     */
/***********************************************************************/

/* $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 */

