Home >> Date / Time handling >> Unedited Reader Contributions SNTP Client in C# By Valer BOCAN Implementation of the Simple Network Time Protocol (RFC 2030) in C#    VC7, .NET   Posted 14 Mar 2001 Articles by this author Send to a friend Printer friendly version [This is an unedited reader contribution] [Modify this article] [Delete this article] Lounge New Articles Sign in Forums Contribute

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Introduction

Though not obvious, time synchronization is sometimes important. The best example is the Kerberos authentication protocol, which requires the resources to be synchronized within minutes or even seconds, but there are other situations as well. The Network Time Protocol (NTP) and its simplified form (SNTP) are widely used to synchronize network resources, due to their simplicity and effectiveness. There are many programs available that synchronize your PC's clock with that of a time server. Dimension 4 is my favorite.

In case you need time synchronization embedded into your software, here is the C# alternative. It's simple, fast and integrates seamlessly with the .NET platform. There is a Java implementation of a NTP client by Michel Van den Bergh, but I don't have the URL anymore. Maybe Michel reads this and will send me a note.

There are several time severs on the Internet and the list below contains those operated by NIST. If you need more, use a search engine.

Name	IP Address	Location
time-a.nist.gov	129.6.15.28	NIST, Gaithersburg, Maryland
time-b.nist.gov	129.6.15.29	NIST, Gaithersburg, Maryland
time-a.timefreq.bldrdoc.gov	132.163.4.101	NIST, Boulder, Colorado
time-b.timefreq.bldrdoc.gov	132.163.4.102	NIST, Boulder, Colorado
time-c.timefreq.bldrdoc.gov	132.163.4.103	NIST, Boulder, Colorado
utcnist.colorado.edu	128.138.140.44	University of Colorado, Boulder
time.nist.gov	192.43.244.18	NCAR, Boulder, Colorado
time-nw.nist.gov	131.107.1.10	Microsoft, Redmond, Washington
nist1.datum.com	209.0.72.7	Datum, San Jose, California
nist1.dc.certifiedtime.com	216.200.93.8	Abovnet, Virginia
nist1.nyc.certifiedtime.com	208.184.49.9	Abovnet, New York City
nist1.sjc.certifiedtime.com	208.185.146.41	Abovnet, San Jose, California

About Valer BOCAN

I am currently doing graduate work to get a Ph.D. degree at the Technical University of Timisoara, Romania.

I am employed by an obscure company in Chicago, but I live in Romania.

If you want to contact me, write to vbocan@usa.net or - when my ISP is dear enough not to be down - write to vbocan@dataman.ro and visit www.dataman.ro

Click here to visit Valer BOCAN's homepage.

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Home >> Date / Time handling >> Unedited Reader Contributions last updated 14 Mar 2001 Article content copyright Valer BOCAN, 2001 everything else © CodeProject, 1999-2001.