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

Capto 1.2.9 - $29.99
Capto (was Voila) is an easy-to-use app that takes capturing, recording, video and image editing to the next level. With an intelligent file manager and quick sharing options, Capto is perfect for... Read more
Opera 51.0.2830.40 - High-performance We...
Opera is a fast and secure browser trusted by millions of users. With the intuitive interface, Speed Dial and visual bookmarks for organizing favorite sites, news feature with fresh, relevant content... Read more
GarageSale 7.0.13 - Create outstanding e...
GarageSale is a slick, full-featured client application for the eBay online auction system. Create and manage your auctions with ease. With GarageSale, you can create, edit, track, and manage... Read more
1Password 6.8.7 - Powerful password mana...
1Password is a password manager that uniquely brings you both security and convenience. It is the only program that provides anti-phishing protection and goes beyond password management by adding Web... Read more
Evernote 7.0.1 - Create searchable notes...
Evernote allows you to easily capture information in any environment using whatever device or platform you find most convenient, and makes this information accessible and searchable at anytime, from... Read more
MacUpdate Desktop 6.2.0 - $20.00
MacUpdate Desktop brings seamless 1-click app installs and version updates to your Mac. With a free MacUpdate account and MacUpdate Desktop 6, Mac users can now install almost any Mac app on... Read more
HoudahSpot 4.3.5 - Advanced file-search...
HoudahSpot is a versatile desktop search tool. Use HoudahSpot to locate hard-to-find files and keep frequently used files within reach. HoudahSpot will immediately feel familiar. It works just the... Read more
EtreCheck 4.0.4 - 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
WhatsApp 0.2.8361 - 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
iClock 4.2 - Customize your menubar cloc...
iClock is a menu-bar replacement for Apple's default clock but with 100x features. Have your Apple or Google calendar in the menubar. Have the day, date, and time in different fonts and colors in the... Read more

Latest Forum Discussions

See All

Disc Drivin' 2 Guide - Tips for the...
We're all still playing quite a bit of Disc Drivin' 2 over here at 148Apps, and we've gotten pretty good at it. Now that we've spent some more time with the game and unlocked more powerups, check out some of these more advanced tips: | Read more »
Alto's Odyssey Guide - How to Tackl...
Alto’s Odyssey is a completely stunning and serene runner, but it can also be a bit tricky. Check out these to try and keep your cool while playing this endless runner: Don’t focus too much on tasks [Read more] | Read more »
Here's everything you need to know...
Alto's Odyssey is a really, really good game. If you don't believe me, you should definitely check out our review by clicking this link right here. It takes the ideas from the original Alto's Adventure, then subtly builds on them, creating... | Read more »
Alto's Odyssey (Games)
Alto's Odyssey 1.0.1 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0.1 (iTunes) Description: Just beyond the horizon sits a majestic desert, vast and unexplored. Join Alto and his friends and set off on an endless... | Read more »
Vainglory 5v5: Everything you need to kn...
Vainglory just got bigger. [Read more] | Read more »
Check out these 5 games that are a lot l...
So you're in love with Minecraft, but you're looking for something else to play as well? You've come to the right place then, because this list is all about games that are a bit like Minecraft. Some of them, more than others. [Read more] | Read more »
Our top 5 characters from casual RPG Cre...
Creature Quest definitely lives up to its name with a host of collectible creatures based on fantasy tales and world mythologies. To celebrate Creature Quest’s first birthday, we’re going to lay out what we think are the five best characters in the... | Read more »
Around the Empire: What have you missed...
Did you know that Steel Media has a whole swathe of other sites dedicated to all aspects of mobile gaming? Sure you'll get the very best iPhone news, reviews, and opinions right here at 148Apps, but we don't want you missing out on a single piece... | Read more »
All the best games on sale for iPhone an...
Oh hi there, and welcome to our round-up of the best games that are currently on sale for iPhone and iPad. You thought I didn't see you there, did you, skulking behind the bushes? Trust me though, the bushes aren't where the best deals are. The... | Read more »
The Battle of Polytopia Guide - How to H...
A new update just released for The Battle of Polytopia (formerly Super Tribes), which introduces online multiplayer. For all the fans of Midjiwan’s lite take on Civilization, this is certainly welcome news, but playing online isn’t as easy and... | Read more »

Price Scanner via MacPrices.net

Amazon restocks MacBook Pros with models avai...
Amazon has restocked 15″ and 13″ Apple MacBook Pros with models on sale for up to $251 off MSRP. Shipping is free. Note that stock of some Macs may come and go (and some sell out quickly), so check... Read more
Lowest price of the year: 15″ 2.8GHz Apple Ma...
Amazon has the 2017 Space Gray 15″ 2.8GHz MacBook Pro on sale today for $251 off MSRP. Shipping is free: – 15″ 2.8GHz Touch Bar MacBook Pro Space Gray (MPTR2LL/A): $2148, $251 off MSRP Their price is... Read more
Apple restocks full line of Certified Refurbi...
Apple has restocked a full line of Apple Certified Refurbished 2017 13″ MacBook Pros for $200-$300 off MSRP. A standard Apple one-year warranty is included with each MacBook, and shipping is free.... Read more
Lowest sale price available for 13″ 1.8GHz Ma...
Focus Camera has the 2017 13″ 1.8GHz/128GB Apple MacBook Air on sale today for $829 including free shipping. Their price is $170 off MSRP, and it’s the lowest price available for a current 13″... Read more
21-inch 2.3GHz iMac on sale for $999, $100 of...
B&H Photo has the 2017 21″ 2.3GHz iMac (MMQA2LL/A) in stock and on sale for $999 including free shipping plus NY & NJ tax only. Their price is $100 off MSRP. Read more
Apple refurbished Mac minis in stock again st...
Apple has restocked Certified Refurbished Mac minis starting at $419. Apple’s one-year warranty is included with each mini, and shipping is free: – 1.4GHz Mac mini: $419 $80 off MSRP – 2.6GHz Mac... Read more
Tuesday MacBook Deals: $250 off 15″ 2.9GHz Ma...
Adorama has the Silver 15″ 2.9GHz Apple MacBook Pro on sale today for $250 off MSRP. Shipping is free, and Adorama charges sales tax for residents in NY & NJ only: – 15″ 2.9GHz Silver MacBook Pro... Read more
Save up to $350 with these Apple Certified Re...
Apple has a full line of Certified Refurbished iMacs available for up to $350 off original MSRP. Apple’s one-year warranty is standard, and shipping is free. The following models are available: – 27... Read more
B&H offers $200 discount on Silver 15″ Ma...
B&H Photo has Silver 15″ Apple MacBook Pros on sale for $200 off MSRP. Shipping is free, and B&H charges sales tax for NY & NJ residents only: – 15″ 2.8GHz Touch Bar MacBook Pro Silver (... Read more
12″ Apple iPad Pro Sale of the Year! Models u...
B&H Photo has 12″ #iPad Pros on sale for up to $150 off MSRP. Shipping is free, and B&H charges sales tax in NY & NJ only: – 12″ 64GB WiFi iPad Pro: $719 $80 off MSRP – 12″ 256GB WiFi... Read more

Jobs Board

*Apple* Retail - Multiple Positions - Apple,...
Job Description:SalesSpecialist - Retail Customer Service and SalesTransform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
*Apple* Retail - Multiple Positions - Apple,...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
*Apple* Solutions Consultant - Apple (United...
# Apple Solutions Consultant Job Number: 113523441 Orange, CA, California, United States Posted: 21-Feb-2018 Weekly Hours: 40.00 **Job Summary** Are you passionate Read more
*Apple* Retail - Multiple Positions - Apple,...
Job Description:SalesSpecialist - Retail Customer Service and SalesTransform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
Sr. Experience Designer, Today at *Apple* -...
# Sr. Experience Designer, Today at Apple Job Number: 56495251 Santa Clara Valley, California, United States Posted: 18-Jan-2018 Weekly Hours: 40.00 **Job Summary** Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.