TweetFollow Us on Twitter

Feb 98 MacTech Online

Volume Number: 14 (1998)
Issue Number: 2
Column Tag: MacTech Online

MacTech Online

by Nicholas C. "nick.c" DeMello, online@mactech.com

What is TCP/IP?

When Paul Baron first developed the concept that became today's Internet, he was trying to solve a military problem. His 1964 proposal described a communications network that had no central authority and could adapt to massive failures -- therefore one that could not be easily disabled by enemy bombardment. Baron's solution was to break communications down into small pieces, each labeled with the address of a remote computer. These "packets" of information would then be passed through an intricate network of computers -- like pails in a firefighter's bucket brigade. If a telephone line or fire hose is cut, the flow is interrupted, but if someone steps out of line in a bucket brigade or a computer goes offline, the system can pass it's cargo around the disruption. The more intricate the web of computer connections available in the network, the more reliable communication became. This packet based communications concept and the mechanisms for transferring packets along a network is the basis for the internet protocol -- IP.

Vinton Cerf was a graduate student at UCLA in 1969, when he helped put the first computer on the internet. As more and more machines were added to the internet, standards needed to be developed for translating data from a system level into a format that could be transferred by the internet protocol. The InerNetworking Working Group (INWG) was founded in 1972 to develop these standards, with Vinton Cerf as the chairman. Two years later, Vint Cerf and Bob Kahn published "A Protocol for Packet Network Internetworking" which specified a standard protocol for converting a stream of data into a series of packets, for reassembling the packets into a stream of data, requesting lost packets be resent, and basically controlling communication through Baron's internet protocol. First titled the network control protocol (NCP), it was later renamed the transmission control protocol -- TCP.

What kind of computer do these visionaries and founders of the information age use today? According to the MacAddict a 1996 television interview with Paul Baron showed him at his computer -- a Power Mac 7100. During an interview for the Netinsider, Vint Cerf was asked what kind of computer he uses today. His response was an emphatic: "I'm a Mac Freak!"

A Short History of the Internet, by Bruce Sterling
http://www.ubicom.com/history.html
The Internet Valley, History of the Internet by Gregory R. Gromov
http://www.internetvalley.com/intval.html
Introduction to TCP/IP by H. Gilbert
http://pclt.cis.yale.edu/pclt/comm/tcpip.htm
RFC 1180: A TCP/IP Tutorial
ftp://ds.internic.net/rfc/rfc1180.txt
Paul Baron Appears on the Evangelist List of Famous Mac Users
http://www.evangelist.macaddict.com/advocacy_action.html
Interview with Vint Cerf, Internet Founder and "Mac Freak"
http://www.netinsider.com/profile/vcerf/profile/

Using TCP/IP on a Mac

TCP/IP is accessed through Apple's Open Transport system. When you review the OT technology on Apple's web site (or in Inside Macintosh: Open Transport) you should realize that OT was designed to support transport independent code -- your code use data streams to send information without knowing what kind of network the user is on (TCP/IP, AppleTalk, or other). Open Transport does allow you to design transport specific applications though, and especially with TCP/IP this may be desirable. The place to start for TCP/IP specific development is with Apple's OpenTransport/TCP dev note, which can be found on the same FTP site as the OT SDK. Also visit Mark Sproul's Open Transport Development web pages and Eric Scouten's Macintosh TCP/IP Programmer's Guide on the Metrowerks web site.

John Norstad has made the Newswatcher source code publicly available. This extremely popular freeware USENET newsreader is compatible with MacTCP and OpenTransport, it's source is probably the single most valuable reference a Mac TCP/IP programmer can find. Look especially closely at the ftp.c, nntp.c, smtp.c, and net.c sources. These files are reusable, modular C code for implementing some of the most popular TCP/IP applications. Also check out Peter N Lewis' TCPExample code and his PNL TCP/IP libraries for implementing TCP/IP. This Pascal code is the foundation Peter's tremendously successful TCP/IP shareware products Anarchie and NetPresenz. Peter has developed Streamwatcher, a debugging tool that allows you to examine data in an Open Transport TCP stream. Once you have Streamwatcher, check out Mark Mentovai's Mac on the Net web site for other TCP/IP diagnostic utilities like Bryan Christianson's IP packet routetracer WhatRoute 1.4.3.

Apple's OpenTransport Website
http://www.devworld.apple.com/dev/opentransport/
Inside Macintosh, Open Transport and OT 1.2 Updates
http://gemma.apple.com/techinfo/techdocs/mac/mac.html
Open Transport/TCP Dev Notes & the OT SDK
ftp://seeding.apple.com/ess/public/opentransport/
The OpenTransport Mailing List, Hosted by Stairways Shareware
http://www.stairways.com/mailinglists/opentpt.html
Open Transport Development Pages by Mark Sproul
http://msproul.rutgers.edu/macintosh/OpenTpt_Dev.html
Macintosh TCP/IP Programmer's Guide, by Eric Scouten
http://www.metrowerks.com/tcpip/
John Norstad's Newswatcher Code
ftp://ftp.acns.nwu.edu/pub/newswatcher/
TCPExample & PNL TCP/IP Libraries by Peter N Lewis
ftp://www.stairways.com/stairways/source/
Mac TCP Watcher 2.0 and Streamwatcher 1.0 by Peter N Lewis
http://www.stairways.com/mtcpw/
http://www.stairways.com/streamwatcher/
Mac On The Net Archive (incl. WhatRoute and other TCP/IP Diagnostic Utils)
http://www.moxienet.com/macnet/

These and other links are archived on the MacTech Online web pages at www.mactech.com/online/.

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Yasu 4.0.0 β - System maintenance app; p...
Yasu was created with System Administrators who service large groups of workstations in mind, Yasu (Yet Another System Utility) was made to do a specific group of maintenance tasks quickly within a... Read more
Skype 7.37.0.178 - Voice-over-internet p...
Skype allows you to talk to friends, family and co-workers across the Internet without the inconvenience of long distance telephone charges. Using peer-to-peer data transmission technology, Skype... Read more
EtreCheck 3.0.5 - For troubleshooting yo...
EtreCheck is an app that displays the important details of your system configuration and allow you to copy that information to the Clipboard. It is meant to be used with Apple Support Communities to... Read more
Amadeus Pro 2.3.1 - Multitrack sound rec...
Amadeus Pro lets you use your Mac computer for any audio-related task, such as live audio recording, digitizing tapes and records, converting between a variety of sound formats, etc. Thanks to its... Read more
NeoFinder 6.9.3 - Catalog your external...
NeoFinder (formerly CDFinder) rapidly organizes your data, either on external or internal disks, or any other volumes. It catalogs all your data, so you stay in control of your data archive or disk... Read more
WhatsApp 0.2.1880 - Desktop client for W...
WhatsApp is the desktop client for WhatsApp Messenger, a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS. WhatsApp Messenger is available for... Read more
Hazel 4.0.6 - Create rules for organizin...
Hazel is your personal housekeeper, organizing and cleaning folders based on rules you define. Hazel can also manage your trash and uninstall your applications. Organize your files using a familiar... Read more
Apple iBooks Author 2.5 - Create and pub...
Apple iBooks Author helps you create and publish amazing Multi-Touch books for iPad. Now anyone can create stunning iBooks textbooks, cookbooks, history books, picture books, and more for iPad. All... Read more
MYStuff Pro 2.0.26 - $39.99
MYStuff Pro is the most flexible way to create detail-rich inventories for your home or small business. Add items to MYStuff by dragging and dropping existing information, uploading new images, or... Read more
MarsEdit 3.7.8 - Quick and convenient bl...
MarsEdit is a blog editor for OS X that makes editing your blog like writing email, with spell-checking, drafts, multiple windows, and even AppleScript support. It works with with most blog services... Read more

How to get past Vulture Island's tr...
Vulture Island is a colorful and quirky mish-mash of platforming and puzzles. It’s creative and fresh, but sometimes the game can throw a curveball at you, leaving you stuck as to how you should progress. These tips will help you explore smoothly... | Read more »
The new Clash of Kings is just for Weste...
If you’ve played the original Clash of Kings, you’ll probably recognise the city building, alliance forging and strategic battles in Clash of Kings: The West. What sets this version apart is that it’s tailor made for a Western audience and the... | Read more »
Frost - Survival card game (Games)
Frost - Survival card game 1.12.1 Device: iOS Universal Category: Games Price: $3.99, Version: 1.12.1 (iTunes) Description: *Warning: the game will work on iPhone 5C and above and iPad Pro / 4. Other devices are not supported* | Read more »
How to build and care for your team in D...
Before you hit the trail and become a dog sledding legend, there’s actually a fair bit of prep work to be done. In Dog Sled Saga, you’re not only racing, you’re also building and caring for a team of furry friends. There’s a lot to consider—... | Read more »
How to win every race in Dog Sled Saga
If I had to guess, I’d say Dog Sled Saga is the most adorable racing game on the App Store right now. It’s a dog sled racing sim full of adorable, loyal puppies. Just look at those fluffy little tails wagging. Behind that cute, pixelated facade is... | Read more »
Let the war games commence in Gunship Ba...
Buzz Lightyear famously said, “This isn’t flying, this is falling – with style!” In the case of Gunship Battle: Second War, though, this really is flying - with style! The flight simulator app from Joycity puts you in control of 20 faithfully... | Read more »
How to get a high score in Fired Up
Fired Up is Noodlecake Games’ high score chasing, firefighting adventure. You take control of a wayward firefighter who propels himself up the side of a highrise with blasts of water. Sound silly? It is. It’s also pretty difficult. You can’t... | Read more »
NBA 2K17 (Games)
NBA 2K17 1.0 Device: iOS iPhone Category: Games Price: $7.99, Version: 1.0 (iTunes) Description: Following the record-breaking launch of NBA 2K16, the NBA 2K franchise continues to stake its claim as the most authentic sports video... | Read more »
Dog Sled Saga (Games)
Dog Sled Saga 1.0.1 Device: iOS Universal Category: Games Price: $3.99, Version: 1.0.1 (iTunes) Description: A game by Dan + Lisa As a rookie musher, foster a dogsledding team whose skills will grow if they're treated right. Week by... | Read more »
60 Seconds! Atomic Adventure (Games)
60 Seconds! Atomic Adventure 1.2 Device: iOS Universal Category: Games Price: $2.99, Version: 1.2 (iTunes) Description: 60 Seconds! is a dark comedy atomic adventure of scavenge and survival. Collect supplies and rescue your family... | Read more »

Price Scanner via MacPrices.net

21-inch iMacs on sale for up to $120 off MSRP
B&H Photo has 21″ iMacs on sale for up to $120 off MSRP including free shipping plus NY sales tax only: - 21″ 3.1GHz iMac 4K: $1379 $120 off MSRP - 21″ 2.8GHz iMac: $1199.99 $100 off MSRP - 21″ 1... Read more
13-inch 2.7GHz/256GB Retina MacBook Pro on sa...
Amazon.com has the 13″ 2.7GHz/256GB Retina Apple MacBook Pro on sale for $151 off MSRP including free shipping: - 13″ 2.7GHz/256GB Retina MacBook Pro (sku MF840LL/A): $1348 $151 off MSRP Read more
Apple TVs on sale for up to $50 off MSRP
Best Buy has 32GB and 64GB Apple TVs on sale for $40-$50 off MSRP on their online store. Choose free shipping or free local store pickup (if available). Sale prices for online orders only, in-store... Read more
Apple refurbished 13-inch Retina MacBook Pros...
Apple has Certified Refurbished 13″ Retina MacBook Pros available for up to $270 off the cost of new models. An Apple one-year warranty is included with each model, and shipping is free: - 13″ 2.7GHz... Read more
Duplicate Sweeper Free On Mac App Store For O...
To celebrate the launch of Apple’s latest macOS Sierra, Stafford, United Kingdom based Wide Angle Software has announced that its duplicate file finder software, Duplicate Sweeper, is now available... Read more
13-inch Retina MacBook Pros on sale for up to...
B&H Photo has 13″ Retina Apple MacBook Pros on sale for up to $150 off MSRP. Shipping is free, and B&H charges NY tax only: - 13″ 2.7GHz/128GB Retina MacBook Pro: $1174.99 $125 off MSRP - 13... Read more
Evidence Surfaces Pointing To New A10X Chip F...
Citing a job description for a Project Lead position at Apple’s Austin, Texas engineering labs, Motley Fool’s Ashraf Eassa deduces that development is progressing well on Apple’s next-generation in-... Read more
Check Print’R for macOS Allows Anyone to Easi...
Delaware-based Match Software has announced the release and immediate availability of Check Print’R 3.21, an important update to their easy-to-use check printing application for macOS. Check Print’R... Read more
Apple refurbished 11-inch MacBook Airs availa...
Apple has Certified Refurbished 11″ MacBook Airs (the latest models), available for up to $170 off the cost of new models. An Apple one-year warranty is included with each MacBook, and shipping is... Read more
Apple refurbished 15-inch Retina MacBook Pros...
Apple has Certified Refurbished 2015 15″ Retina MacBook Pros available for up to $380 off the cost of new models. An Apple one-year warranty is included with each model, and shipping is free: - 15″ 2... Read more

Jobs Board

Sr. *Apple* Mac Engineer - Net2Source Inc....
…staffing, training and technology. We have following position open with our client. Sr. Apple Mac Engineer6+ Months CTH Start date : 19th Sept Travelling Job If Read more
*Apple* Retail - Multiple Positions-Norfolk,...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
Restaurant Manager (Neighborhood Captain) - A...
…in every aspect of daily operation. WHY YOU'LL LIKE IT: You'll be the Big Apple . You'll solve problems. You'll get to show your ability to handle the stress and Read more
Lead *Apple* Solutions Consultant - Apple (...
# Lead Apple Solutions Consultant Job Number: 51829230 Detroit, Michigan, United States Posted: Sep. 19, 2016 Weekly Hours: 40.00 **Job Summary** The Lead ASC is an Read more
US- *Apple* Store Leader Program - Apple (Un...
…Summary Learn and grow as you explore the art of leadership at the Apple Store. You'll master our retail business inside and out through training, hands-on Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.