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/* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
/*
* Copyright (c) 1997 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the Daedalus Research
* Group at the University of California Berkeley.
* 4. Neither the name of the University nor of the Laboratory may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#) $Header: /cvsroot/nsnam/ns-2/apps/telnet.cc,v 1.5 1998/08/14 20:09:33 tomh Exp $
*/
#include "random.h"
#include "tcp.h"
#include "telnet.h"
extern double tcplib_telnet_interarrival();
static class TelnetAppClass : public TclClass {
public:
TelnetAppClass() : TclClass("Application/Telnet") {}
TclObject* create(int, const char*const*) {
return (new TelnetApp);
}
} class_app_telnet;
TelnetApp::TelnetApp() : running_(0), timer_(this)
{
bind("interval_", &interval_);
}
void TelnetAppTimer::expire(Event*)
{
t_->timeout();
}
void TelnetApp::start()
{
running_ = 1;
double t = next();
timer_.sched(t);
}
void TelnetApp::stop()
{
running_ = 0;
}
void TelnetApp::timeout()
{
if (running_) {
/* call the TCP advance method */
agent_->sendmsg(agent_->size());
/* reschedule the timer */
double t = next();
timer_.resched(t);
}
}
double TelnetApp::next()
{
if (interval_ == 0)
/* use tcplib */
return tcplib_telnet_interarrival();
else
return Random::exponential() * interval_;
}
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