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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
<html>
<head>
<!-- BEGIN META TAG INFO -->
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<link rel="home" href="http://developer.apple.com/">
<link rel="find" href="http://developer.apple.com/search/">
<link rel="stylesheet" type="text/css" href="../../documentation/css/adcstyle.css" title="fonts">
<script language="JavaScript" src="../../documentation/js/adc.js" type="text/javascript"></script>
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<title>SimplePing - /main.c</title>
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window.location=document.scpopupmenu.gotop.value;
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<td><img width="340" height="10" src="images/1dot.gif" alt=""></td>
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<td align="left" colspan="2">
<a href="http://developer.apple.com/">ADC Home</a> > <a href="../../referencelibrary/index.html">Reference Library</a> > <a href="../../samplecode/index.html">Sample Code</a> > <a href="../../samplecode/Networking/index.html">Networking</a> > <a href="../../samplecode/Networking/idxDarwin-date.html">Darwin</a> > <A HREF="javascript:location.replace('index.html');">SimplePing</A> >
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<!-- START MAIN CONTENT -->
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<table width="680" border="0" cellpadding="0" cellspacing="0">
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<td><h1><div id="pagehead">SimplePing</div></h1></td>
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<h2>/main.c</h2>
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<p><strong>View Source Code:</strong>
<select name="gotop" onChange="JumpToNewPage();" style="width:340px"><option selected value="ingnore">Select File</option>
<option value="listing1.html">/main.c</option>
<option value="listing2.html">/Readme.txt</option>
<option value="listing3.html">/SimplePing.c</option>
<option value="listing4.html">/SimplePing.h</option></select>
</p>
</form>
<p><strong><a href="SimplePing.zip">Download Sample</a></strong> (“SimplePing.zip”, 18.0K)<BR>
<strong><a href="SimplePing.dmg">Download Sample</a></strong> (“SimplePing.dmg”, 66.5K)</p>
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<p><strong><a href="#">Download Sample</a></strong> (“filename.sit”, 500K)</p>
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<!--googleon: index -->
<pre class="sourcecodebox">/*
File: main.c
Description: This file is the demo file for the SimplePing API and sample.
Author: Chad Jones
Copyright: Copyright 2003 Apple Computer, Inc. All rights reserved.
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc.
("Apple") in consideration of your agreement to the following terms, and your
use, installation, modification or redistribution of this Apple software
constitutes acceptance of these terms. If you do not agree with these terms,
please do not use, install, modify or redistribute this Apple software.
In consideration of your agreement to abide by the following terms, and subject
to these terms, Apple grants you a personal, non-exclusive license, under Apple’s
copyrights in this original Apple software (the "Apple Software"), to use,
reproduce, modify and redistribute the Apple Software, with or without
modifications, in source and/or binary forms; provided that if you redistribute
the Apple Software in its entirety and without modifications, you must retain
this notice and the following text and disclaimers in all such redistributions of
the Apple Software. Neither the name, trademarks, service marks or logos of
Apple Computer, Inc. may be used to endorse or promote products derived from the
Apple Software without specific prior written permission from Apple. Except as
expressly stated in this notice, no other rights or licenses, express or implied,
are granted by Apple herein, including but not limited to any patent rights that
may be infringed by your derivative works or by other works in which the Apple
Software may be incorporated.
The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
COMBINATION WITH YOUR PRODUCTS.
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION
OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT
(INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Change History (most recent first):
10/3/03 Chad Jones Added comment indicating sample requires build tools
ProjectBuilder 2.1 or later
*/
//Note this sample requires Mac OS X 10.2.x or later and
//ProjectBuilder version 2.1 or later.
#include "SimplePing.h"
int main(int argc, char* argv[])
{
//Address can either be domain name style (e.g. www.yahoo.com) or IP style (e.g. 17.11.203.2)
char* defaultAddressToPing = "www.google.com";
char* remoteHostToPing;
const int kNumberOfPacketsToSend = 4;
const int kPingTimeoutInSeconds = 2; //timeout we wait for responses after each packet sent
int error;
if (argc == 2)
{
//address was provided in input. Use address provided
remoteHostToPing = argv[1];
}
else
{
//no address was provided use default (www.google.com).
remoteHostToPing = defaultAddressToPing;
}
/* Here we are calling SimplePing which does all the work of pinging the remote host for us.
* First Argument: The host to ping expressed as a C-String. On calling SimplePing this
* variable will hold a description of the host as a C-String. The string can either be
* a hostname (e.g. "www.google.com") or an IP address (e.g. "17.203.23.111")
* Second Argument: The number of ping packets to send to the remote host before stopping.
* Also, for each ping packet simple ping will show some output on if there was a
* reply, round trip time, etc.
* Third Argument: The time to wait for responses to the ping before stopping. Note we will
* wait for responses even after a successful response has been received up until
* the timeout has occurred
* Forth Argument: An integer indicating if we want to return immediately after getting the desired
* response or if we wait for the timeout (even after a successful response) to see if any other
* packets come. If the integer is zero then we will wait for the timeout and non-zero indicates
* we want to return immediately. Here we pass zero to wait for the full timeout.
* Return Value: This is an UNIX integer error code. On success the return value will be zero. On
* failure the value will be a UNIX error code. You can find the list of UNIX error codes
* and their meanings in /usr/include/sys/errno.h
*/
error = SimplePing(remoteHostToPing, kNumberOfPacketsToSend, kPingTimeoutInSeconds, 0);
//If there was an error return one instead of zero.
if (error != 0)
{
return(1);
}
return(0);
}
</pre>
<!--googleoff: index -->
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<div style="margin-bottom: 8px"><a href="http://developer.apple.com/feedback/?v=1&url=/samplecode/SimplePing/listing1.html%3Fid%3DDTS10000716-1.1&media=dvd" target=_new>Yes</a>: Tell us what works for you.</div>
<div style="margin-bottom: 8px"><a href="http://developer.apple.com/feedback/?v=2&url=/samplecode/SimplePing/listing1.html%3Fid%3DDTS10000716-1.1&media=dvd" target=_new>It’s good, but:</a> Report typos, inaccuracies, and so forth.</div>
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