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Topology Dynamics in a P2PTV Network
Topology dynamics in a P2PTV network S. Tang, Y. Lu, J. Mart´ınHern´andez,F.A. Kuipers, and P. Van Mieghem Delft University of Technology, P.O. Box 5031, 2600 GA Delft, The Netherlands fS.Tang, Y.Lu, J.MartinHernandez, F.A.Kuipers, [email protected] Abstract. In recent years, a number of commercial peer-to-peer TV (P2PTV) applications have been launched. Yet, their mechanisms and characteristics are unknown. In this paper, we study SopCast, a typical proprietary P2PTV system. Treating SopCast as a black box, we perform a set of experiments that are suitable to analyze SopCast in depth. We attempt to disclose the SopCast protocol. The dynamic nature of the SopCast overlay, in terms of node degree, is also addressed in this paper. Our approaches in analyzing the SopCast mechanism and characterizing its topological properties reveal important design insights in SopCast, and may help to better understand similar P2PTV systems. Keywords: Topology dynamics, SopCast, P2PTV 1 Introduction The success of peer-to-peer (P2P) file-sharing systems has spurred the deploy- ment of P2P technologies in many other bandwidth-intensive large-scale ap- plications. Peer-to-Peer Television (P2PTV) has become a popular means of streaming audio and video content over the Internet. Example applications are CoolStreaming [8], TVAnts1, TVU2, SopCast3, etc. It is important to evaluate the traffic impact of such applications, while modeling their behavior. However, P2PTV streaming systems, such as SopCast, are developed for commercial pur- poses: thus, very little is known about their architectures. Some papers claim that SopCast is based on similar principles as those underlying CoolStreaming, e.g. -
Understanding the Design Tradeoffs for Cooperative Streaming Multicast
Understanding the design tradeoffs for cooperative streaming multicast Animesh Nandi‡⋄, Bobby Bhattacharjee†, Peter Druschel⋄ ⋄MPI-SWS ‡Rice University †University of Maryland Technical Report MPI-SWS-2009-002 April 2009 ABSTRACT fers from previous works that have compared CEM design choices Video streaming over the Internet is rapidly increasing in popular- qualitatively [1, 21] or analytically [42, 44, 7, 22], and with those ity, but the availability and quality of the content is limited by the that have compared specific CEM protocols empirically [26, 45]. high bandwidth cost for server-based solutions. Cooperative end- It is not our intent to recommend any single approach or pro- system multicast (CEM) has emerged as a promising paradigm for tocol. Instead, we explore the CEM design space, cleanly identify content distribution in the Internet, because the bandwidth over- the tradeoffs that apply to these systems, tease out different compo- head of disseminating content is shared among the participants of nents that are responsible for different aspects of observed behav- the CEM overlay network. Several CEM systems have been pro- ior, and partition deployment scenarios into regions where different posed and deployed, but the tradeoffs inherent in the different de- systems excel. signs are not well understood. A systematic comparison of CEM systems is non-trivial. These In this work, we provide a common framework in which different systems deliver data over a diversity of data topologies (tree, multi- CEM design choices can be empirically and systematically evalu- tree, mesh, and hybrids) which are constructed and maintained us- ated. Our results show that all CEM protocols are inherently lim- ing different control and transport protocols. -
P2P Networking and Applications
P2P Networking and Applications John F. Buford Heather Yu Eng Keong Lua AMSTERDAM • BOSTON • HEIDELBERG • LONDON NEW YORK • OXFORD • PARIS • SAN DIEGO u' SAN FRANCISCO • SINGAPORE • SYDNEY • TOKYO MORGAN Morean Kaufmann Publishers is an imprint of Elsevier Table of Contents Preface xvii About the Authors xxi CHAPTER 1 Introduction 1 P2P Emerges as a Mainstream Application 1 The Rise of P2P File-Sharing Applications 1 Voice over P2P (VoP2P) 4 P2PTV 5 P2P Networking and the Internet 8 P2P Overlays and Network Services 8 Impact of P2P Traffic on the Internet 10 Motivation for P2P Applications 11 P2P from the End User's Perspective 11 Is P2P = Piracy? 12 P2P Strengths and Benefits 12 P2P Open Issues 14 P2P Economics 14 The P2P Value Proposition 14 Barrier to Entry 15 Revenue Models and Revenue Collection 15 P2P Application Critical Mass 16 Anatomy of Some P2P Business Models 17 VoP2P 17 File Sharing 19 Social Impact 21 Technology Trends Impacting P2P 22 Summary 23 Further Reading 23 CHAPTER 2 Peer-to-Peer Concepts 25 Operation of a P2P System 25 The User View 25 P2P Beyond the Desktop Computer 26 Overlay View 28 Principles of the P2P Paradigm 29 A Graph Theoretic Perspective 31 Overview 31 Overlay 31 Graph Properties 33 Object Storage and Lookup 34 vi Table of Contents A Design Space Perspective 35 A Routing Performance Perspective 36 Routing Geometries and Resilience 36 Tradeoff Between Routing State and Path Distance 37 Churn and Maintaining the Overlay 37 Locality 39 An Implementation Perspective: OverlayWeaver 41 Summary 43 For Further -
Unsorted Bookmarks Unsorted Bookmarks > Plugins
Downloaded from: justpaste.it/mybookmarks Unsorted Bookmarks Unsorted Bookmarks > Unsorted Academic Earth | Online Courses | Plugins Bookmarks Academic Video Lectures > Cricket Revolution - A Multiplayer PC WP Profiles | Nick Momrik | Cricket Game Profile storytelling Add-ons for Firefox WP Profiles | automattic | Profile WineHQ - Run Windows applications WP Profiles | Alex M. on Linux, BSD, Solaris and Mac OS X (Viper007Bond) | Profile Storybird - News pygame - python game WordPress › Yet Another Collaborative development Related Posts Plugin « storytelling PCSX2 Playstation 2 emulator - News WordPress Plugins The Online Sizzled Core - Internet, Web 2.0, Community Technology for Writers - Sizlopedia Unsorted Bookmarks > Writing.Com Shahan's World Protagonize: Google AdWords: Keyword Tool bookmarksBackup+notes collaborative Google Analytics | Official Website story & Online Contextual Advertising and My Bookmarks creative Behavioral Marketing Services Paste HTML: free anonymous fiction writing W3Schools Online Web Tutorials HTML hosting community Linkbucks.com - Make money when justpaste.it - publish text and people leave your website! share with friends Pay Per Click Advertising - In Text textsnip - Keep your text & code Ads for Websites by Infolinks formatting safe from IM and Squidoo : Welcome to Squidoo Email Digital Products Retailer: Affiliate Pen - Simple Online Publishing Program & Sell Online - ClickBank TextLinkAds | The Leader in Text Link Search Engine Optimization Tribal Fusion Traffic Junky Ad Broker - Online Internet Marketing Services whos.amung.us Diigo - Web Highlighter and Sticky Notes, Online Bookmarking and Annotation, Personal Learning Network. PhysOrg.com - Science News, Technology, Physics, Nanotechnology, Space Science, Earth Science, Medicine reddit.com: what's new online! Blogging Discussion, Tips & Tricks – Blogussion Knol - a unit of knowledge: share what you know, publish your expertise. -
Measurement and Analysis of P2P IPTV Program Resource
Hindawi Publishing Corporation e Scientific World Journal Volume 2014, Article ID 101702, 9 pages http://dx.doi.org/10.1155/2014/101702 Research Article Measurement and Analysis of P2P IPTV Program Resource Wenxian Wang,1,2 Xingshu Chen,1 Haizhou Wang,1 Qi Zhang,1 and Cheng Wang1 1 Network and Trusted Computing Institute, College of Computer Science, Sichuan University, Chengdu 610065, China 2 Mathematical College, Sichuan University, Chengdu 610064, China Correspondence should be addressed to Xingshu Chen; [email protected] Received 29 August 2013; Accepted 10 March 2014; Published 19 March 2014 Academic Editors: J. Shu and F. Yu Copyright © 2014 Wenxian Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. With the rapid development of P2P technology, P2P IPTV applications have received more and more attention. And program resource distribution is very important to P2P IPTV applications. In order to collect IPTV program resources, a distributed multi- protocol crawler is proposed. And the crawler has collected more than 13 million pieces of information of IPTV programs from 2009 to 2012. In addition, the distribution of IPTV programs is independent and incompact, resulting in chaos of program names, which obstructs searching and organizing programs. Thus, we focus on characteristic analysis of program resources, including the distributions of length of program names, the entropy of the character types, and hierarchy depth of programs. These analyses reveal the disorderly naming conventions of P2P IPTV programs. The analysis results can help to purify and extract useful information from chaotic names for better retrieval and accelerate automatic sorting of program and establishment of IPTV repository. -
20Entrepreneurial Journalism
Journalism: New Challenges Karen Fowler-Watt and Stuart Allan (eds) Journalism: New Challenges Edited by: Karen Fowler-Watt and Stuart Allan Published by: Centre for Journalism & Communication Research Bournemouth University BIC Subject Classification Codes: GTC Communication Studies JFD Media Studies KNTD Radio and television industry KNTJ Press and journalism JNM Higher and further education, tertiary education First published 2013, this version 1.02 ISBN: 978-1-910042-01-4 [paperback] ISBN: 978-1-910042-00-7 [ebook-PDF] ISBN: 978-1-910042-02-1 [ebook-epub] http://microsites.bournemouth.ac.uk/cjcr/ Copyright © 2013 Acknowledgements Our first thank you is to the contributors who made Journalism: New Challenges possible, not least for so generously sharing their expertise, insights and enthusiasm for this approach to academic e-publishing. This endeavour was supported by the Centre for Journalism and Communication Research (CJCR), here in the Media School at Bournemouth University, UK. With regard to the production and distribution of this book, we are grateful to Einar Thorsen and Ann Luce for their stellar efforts. They would like to thank, in turn, Carrie Ka Mok for setting its design and layout, and Ana Alania for contributing ideas for the cover. Many thanks as well to Mary Evans, Emma Scattergood and Chindu Sreedharan for their helpful sugges- tions on how to develop this publishing venture. Karen Fowler-Watt and Stuart Allan, editors Table of contents Introduction i Karen Fowler-Watt and Stuart Allan Section One: New Directions -
A Survey on Peer-To-Peer (P2P)
ISSN (Online) 2278-1021 ISSN (Print) 2319-5940 IJARCCE International Journal of Advanced Research in Computer and Communication Engineering ICRITCSA M S Ramaiah Institute of Technology, Bangalore Vol. 5, Special Issue 2, October 2016 A Survey on Peer-to-Peer (P2P) Shruti Ghatnatti1, Patil Aishwarya Prasanna2, Shailaja2 Assistant Professor, BCA, P.C. Jabin Science College, Hubballi, India1 Student, BCA, P.C. Jabin Science College, Hubballi, India2 Abstract: Today‟s world the internet is on boom. Its trending on a very high basis.Its a food for many organizations and apllications in computer field. The communication is high over the internet. It‟s a good practice to have a secured communication over a peers. This paper attempts to survey on the peer-to-peer communication over a distributed networking. Its working and features are clearly explained. Keywords: P2P, Peers,Distributed Network, Network. I. INTRODUCTION Peer-to-peer (P2P) is an application that is used for search engines , virtual file systems ,and supercomputers”. computable process or to connect two or more computers In earlier software systems and networking discussions the or other devices that distributes the architecture to separate peer-to-peer was primary concept that is used for jobs or labors between peers. They are privileged equally, computable process visualized, stated in the first Request strong participants in the application program .And also for comments as reaching back to a P2P that is near to they are interconnected with several networks that are the principles -
List of Search Engines
A blog network is a group of blogs that are connected to each other in a network. A blog network can either be a group of loosely connected blogs, or a group of blogs that are owned by the same company. The purpose of such a network is usually to promote the other blogs in the same network and therefore increase the advertising revenue generated from online advertising on the blogs.[1] List of search engines From Wikipedia, the free encyclopedia For knowing popular web search engines see, see Most popular Internet search engines. This is a list of search engines, including web search engines, selection-based search engines, metasearch engines, desktop search tools, and web portals and vertical market websites that have a search facility for online databases. Contents 1 By content/topic o 1.1 General o 1.2 P2P search engines o 1.3 Metasearch engines o 1.4 Geographically limited scope o 1.5 Semantic o 1.6 Accountancy o 1.7 Business o 1.8 Computers o 1.9 Enterprise o 1.10 Fashion o 1.11 Food/Recipes o 1.12 Genealogy o 1.13 Mobile/Handheld o 1.14 Job o 1.15 Legal o 1.16 Medical o 1.17 News o 1.18 People o 1.19 Real estate / property o 1.20 Television o 1.21 Video Games 2 By information type o 2.1 Forum o 2.2 Blog o 2.3 Multimedia o 2.4 Source code o 2.5 BitTorrent o 2.6 Email o 2.7 Maps o 2.8 Price o 2.9 Question and answer . -
Domicil40! 1969 – 2009 Jazz World Music Avantgarde in Dortmund Impressum Mitglieder Inhalt
1 domicil40! 1969 – 2009 jazz world music avantgarde in dortmund impressum mitglieder inhalt 40 Jahre domicil – Die Jubiläumszeitung Aktive Mitglieder 3 grußworte domicil Dortmund e.V. Christoph Aderholz, Gürcan Alev, Susann Bach, Maryam Hansastraße 7 – 11, 44137 Dortmund Baghery, Heinz-Joachim Bahr, Michael Batt, Michael Rainer 4 wie alles anfing 26 dienstleister domicil Berger, Karin Blöcher, Stefan Blohm, Jesper Boenke, Ralph Vorstand Udo Wagener (1. Vorsitzender) parallele welten 29 Brix, Ute Brüggemann, Jürgen Brunsing, Franziska Burkhard, 7 mal tacheles Telefon 0231 – 862 90 30 (Büro gGmbH) Dorothea Dannert, Aysun Demir, Karl-Heinz Deyer, Maksim www.domicil-dortmund.de 8 bühne frei für‘s ehrenamt 30 shake your booty, baby Diagilew, Nicola Dornseifer, Doris Feindt, Ulrike Flaspöhler, V.i.S.d.P. Udo Wagener Astrid Fliedner, Uwe Forsthövel, Uwe Geitner, Dr. Vera Gerling, 10 vierzig gründe, das domicil zu mögen 32 kunstausstellungen im domicil Jörg Gerlings, Michael Gremmelmaier, Stu Grimshaw, Michael Idee und Konzept Günter U. Maiß Gründel, Julia Haase, Andreas Heuser, Achim Kämper, Markus 12 ein musikmöbel mit profil 34 lebe wohl leopoldstraße! hallo hansastraße! 2Chefredakteur Ralph Brix Keil, Anke Klusmeier, Stefan Kronenberg, Sebastian Kruse, Mario Küchler, Dr. Klaus Kwetkat, Ludger Lammers, Jürgen 14 domicil milestones 37 hansastraße und co. Redaktion (Konzept, Text, Bild) Leuchtmann, Gerald Linning-Droste, Jeannette Lochny, Günter Günter U. Maiß, Andre Noll, Frank Scheele 17 wer vor stand 38 mehr als nur ein kurzer auftritt Maiß, Gabriele Maleike, Petra Mecklenburg, Torsten Michael, Autoren Michael Batt (mb), Ralph Brix (rab), Gün- Crispin Müller, Elke Nachtigall, Andre Noll, Hans-Joachim 18 montag? – da is‘ domicil! 40 pinnwand ter U. -
Watching Television Over an IP Network
Watching Television Over an IP Network Meeyoung Cha⋆ Pablo Rodriguez¶ Jon Crowcroft† Sue Moon‡ Xavier Amatriain¶ ⋆MPI-SWS ¶Telefonica Research †University of Cambridge ‡KAIST ABSTRACT 1. INTRODUCTION For half a century, television has been a dominant and per- Since the 1950’s, television has been a dominant and perva- vasive mass media, driving many technological advances. sive mass media; it is watched across all age groups and by Despite its widespread usage and importance to emerging almost all countries in the world. Over the years, television applications, the ingrained TV viewing habits are not com- has transformed itself into a new media. The number of pletely understood. This was primarily due to the difficulty channels has increased from a few free-to-air broadcasts to of instrumenting monitoring devices at individual homes at several hundreds for cable, satellite, and Internet TV net- a large scale. The recent boom of Internet TV (IPTV) has works, that transmit more channels to each user. The video enabled us to monitor the user behavior and network usage signal itself has changed from black & white and color analog of an entire network. Such analysis can provide a clearer to high-quality digital stream. picture of how people watch TV and how the underlying Many technological advances were produced by trying to networks and systems can better adapt to future challenges. meet user needs and expectations in such a widespread me- In this paper, we present the first analysis of IPTV work- dia. For example, the large number of users that concur- loads based on network traces from one of the world’s largest rently watch TV sparked the use of IP multicast by network IPTV systems. -
David Arendale's 2017 Guide to Ipad Apps
David Arendale’s 2017 Guide to iPad Apps Revised February 24, 2017 Photos courtesy Apple, Inc. David Arendale, Ph.D., Associate Professor of History and Higher Education, Manager EOA National Best Practices Center, and Author “Access at the Crossroads: Learning Assistance in Higher Education.” http://z.umn.edu/bookinfo University of Minnesota, 275D Peik Hall, Curriculum & Instruction Department, College of Education and Human Development, 159 Pillsbury Drive SE, Minneapolis, MN 55455; [email protected]; http://arendale.org; (612) 625-2928; http://twitter.com/DavidArendale; http://www.linkedin.com/in/davidarendale Click on this link, http://z.umn.edu/davidipadapps to download the most recent version of this directory. Click on this link, http://z.umn.edu/appletvapps to download the most recent version of a companion directory that provides an overview of Apple TV apps downloaded by David Arendale for educational and personal use. Introduction This document provides an overview of the iPads apps I have found useful as an educator and in my personal life. Most of the apps were free, some cost a dollar or two. Only a few cost $9.99. Many thanks to my colleagues in my home academic department of Curriculum & Instruction as well as the College of Education and Human Development staff within the Office of Information Technology at the University of Minnesota. I received good recommendations from them reflected in this document. Updating iPad Apps If you own an iPad2 or higher, updating apps is not a problem. In fact, the new Apple operating system has made it easier. If you own the original iPad1, updating has stopped since Apple will no longer provide updated operating systems. -
P2PTV Multi-Channel Peers Analysis Marwan Ghanem, Olivier Fourmaux, Fabien Tarissan, Takumi Miyoshi
P2PTV Multi-channel Peers Analysis Marwan Ghanem, Olivier Fourmaux, Fabien Tarissan, Takumi Miyoshi To cite this version: Marwan Ghanem, Olivier Fourmaux, Fabien Tarissan, Takumi Miyoshi. P2PTV Multi-channel Peers Analysis. The 18th Asia-Pacific Network Operations and Management Symposium, Oct 2016, Kanazawa, Japan. hal-01366453 HAL Id: hal-01366453 https://hal.archives-ouvertes.fr/hal-01366453 Submitted on 14 Sep 2016 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. P2PTV Multi-channel Peers Analysis Marwan Ghanem, Olivier Fourmaux Fabien Tarissan Takumi Miyoshi Sorbonne Universités, UPMC Univ Paris 06 Université Paris-Saclay College of Systems Eng. and Sc. CNRS, LIP6 UMR 7606 ISP, ENS Cachan, CNRS Shibaura Institute of Technology 75005 Paris, France 94235 Cachan, France Saitama, 337-8570 Japan Email: [email protected] Abstract—After being the support of the data and voice audio/video streams to distribute in real-time to a large number convergence, the Internet has become one of the main video of receivers. The large number of streams and their intrinsic providers such as TV-stream. As an alternative to limited or real-time characteristics generate timing constraints which are expensive technologies, P2PTV has turned out to be a promising support for such applications.