Quake3Networking - bookofhook - Trac. This article is a reprint/updated version of an e-mail I sent out to the mud-dev mailing list a few years ago, describing the Q3 networking model as described to me by John Carmack. I did this partly out of my own curiousity (since I was firmly entrenched in the graphics side of things) and partly out of a desire to propagate information on the 100% unreliable networking model in Q3 which I felt (and still feel) was fairly groundbreaking due to its simplicity and ease of understanding.
The First Attempt (QTEST/Quake2) ¶ Carmack's first real networking implementation, back in 1995, used TCP for QuakeTest (QTEST). This was fine for LAN play, because the large packets (8K) wouldn't fragment on a LAN (by "fragment", I mean to the point where disassembly and reassembly induced significant overhead), but didn't work so well over the Internet due to fragmentation (where dis/reassembly and lost packets often resulted in very expensive resends). Quake3 ¶ The client's receive logic boils down to: What a Botnet Looks Like. The Internet Sucks: Or, What I Learned Coding X-Wing vs. TIE Fighter. The Internet Sucks: Or, What I Learned Coding X-Wing vs. TIE Fighter Editor's note: This paper was originally published in the 1999 Game Developer's Conference proceedings.
When we started the X-Wing vs. TIE Fighter project, our goal was to create the first multi-player space combat simulator to be playable over the Internet. There were several major problems that we had to be overcome to accomplish this goal, not the least of which was the Internet itself. I will review the problems we faced, the approach we took, and the results we achieved. The Problems We Knew About X-Wing vs. Our second problem was the complexity of the game design. Third on our list of problems was that we would not have a dedicated server available; we would have to use a peer-to-peer network model. The fourth problem, of course, was the Internet itself. Building Subversive File Sharing With Client Side Applications. By Robert Hansen Date: 02/02/2008 Abstract: The subversive use of JavaScript has come in vogue over the last few years, since the invention of intranet hacking (Web Hacking 2.0).
Soon after that was the introduction of the same concept but without the use of JavaScript (Web Hacking 1.0) to step backwards and reduce the usefulness of many client side protection systems. While the concept of intranet hacking using client side scripting is far from ubiquitous in the security world and needs continued research, there are many other implications for client side code.
One concept that is possible is the subversive use of client side technologies to enable file sharing. Overview: There are two basic premises of file sharing programs, the first being the ability to share files with one or more users elsewhere on the Internet. Scenario: There are three parties in this scenario who all take place in the file sharing.
Alice: Willing party (owns a web site, and has the original file). Emma3D - Home. The french cafe technique. How Samba was written --------------------- Andrew Tridgell August 2003 Method 1: --------- First off, there are a number of publicly available documents on the CIFS/SMB protocol. The documents are incomplete and in places rather inaccurate, but they are a very useful starting point. Perhaps the most useful document is "draft-leach-cifs-v1-spec-02.txt" from 1997 which is a protocol specification released by SNIA and authored primarily by Microsoft (with significant input from many other people, including myself). This document has expired as an IETF draft, and Microsoft has dropped their attempts to get CIFS accepted as an IETF standard, but the document is still available if you look hard enough with an internet search engine.
There are numerous other public specifications for various pieces of the protocol available. Samy is my hero. Wireless Archives. May 07, 2004 802.11b/g - AARGH! I've noticed a disturbing trend. Laptop makers, when listing their products' specs, have started just saying "802.11b/g" -- that doesn't help me at all. Is it the slower 802.11b (which is compatible with 802.11g networks) or is it the faster 802.11g (which is, well, faster)?? Is this some grand marketing conspiracy to "sell up" aging Wi-Fi (802.11b) components using the appeal of the faster 802.11g standard?
May 02, 2004 Personal Video Recorder Delivers Over WiFi Sharp Electronics and Instant802 Networks have announced a partnership, bringing video distribution into the wireless age. The partnership has resulted in the Sharp Galileo Personal Video Recorder (PVR), one of the first devices to leverage 802.11-based wireless systems for video distribution. Instant802's wireless software platform is used for range of data networking devices. The Galileo PVR is available immediately in Japan, and is expected to hit North America later this year. April 28, 2004. TREVOR MARSHALL - Slotted Waveguide 802.11b WLAN antennas.
Please Google the net for updated info supplementing this 2001 article 48 Km in Western Australia from waveguide to Biquad/dish Australian group gets 7Km from the waveguide antennas Link to my tutorial 'Antennas Enhance WLAN Security' from BYTE.com, October, 2001 Waveguides? Aren't they a bit complicated? In a word, Yes! Microwave technology is pretty esoteric, and it used to be reserved for the "spooks" designing electronic warfare systems, radars, and the like. But microwave equipment has been steadily penetrating into mainstream applications. Microwave technology seems complex because we have left the boffins in charge for too long. What is the 2.4GHz ISM Band? Wireless networking systems using the 802.11b standard operate in the 2.4GHz ISM band. A WLAN receiver can use any of these channels, and can automatically hop from channel to channel if interference is encountered.
How I Produced These Designs and Charts Omnidirectional Slotted Waveguide Antennas For the 8 slot Unidirectional: Njam homepage.