HTML5 and the Open Web Platform
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Just Another Perl Hack Neil Bowers1 Canon Research Centre Europe
Weblint: Just Another Perl Hack Neil Bowers1 Canon Research Centre Europe Abstract Weblint is a utility for checking the syntax and style of HTML pages. It was inspired by lint [15], which performs a similar function for C and C++ programmers. Weblint does not aspire to be a strict SGML validator, but to provide helpful comments for humans. The importance of quality assurance for web sites is introduced, and one particular area, validation of HTML, is described in more detail. The bulk of the paper is devoted to weblint: what it is, how it is used, and the design and implementation of the current development version. 1. Introduction The conclusion opens with a summary of the information and opinions given in this paper. A Web sites are becoming an increasingly critical part of selection of the lessons learned over the last four years how many companies do business. For many companies is given, followed by plans for the future, and related web sites are their business. It is therefore critical that ideas. owners of web sites perform regular testing and analysis, to ensure quality of service. 2. Web Site Quality Assurance There are many different checks and analyses which The following are some of the questions you should be you can run on a site. For example, how usable is your asking yourself if you have a web presence. I have site when accessed via a modem? An incomplete list of limited the list to those points which are relevant to similar analyses are given at the start of Section 2. -
Applying World Wide Web Standards to Embedded Systems
NASA / TMm2002-211199 AIAA-2001-5107 Embedded Web Technology: Applying World Wide Web Standards to Embedded Systems Joseph G. Ponyik and David W. York Glenn Research Center, Cleveland, Ohio March 2002 The NASA STI Program Office... in Profile Since its founding, NASA has been dedicated to CONFERENCE PUBLICATION. Collected the advancement of aeronautics and space papers from scientific and technical science. The NASA Scientific and Technical conferences, symposia, seminars, or other Information (STI) Program Office plays a key part meetings sponsored or cosponsored by in helping NASA maintain this important role. NASA. The NASA STI Program Office is operated by SPECIAL PUBLICATION. Scientific, Langley Research Center, the Lead Center for technical, or historical information from NASA's scientific and technical information. The NASA programs, projects, and missions, NASA STI Program Office provides access to the often concerned with subjects having NASA STI Database, the largest collection of substantial public interest. aeronautical and space science STI in the world. The Program Office is also NASA's institutional TECHNICAL TRANSLATION. English- mechanism for disseminating the results of its language translations of foreign scientific research and development activities. These results and technical material pertinent to NASA's are published by NASA in the NASA STI Report mission. Series, which includes the following report types: Specialized services that complement the STI TECHNICAL PUBLICATION. Reports of Program Office's diverse offerings include completed research or a major significant creating custom thesauri, building customized phase of research that present the results of data bases, organizing and publishing research NASA programs and include extensive data results.., even providing videos. -
Downloaded (Just Like an EXE File) and Executed from Local File System
HTML - Wikipedia, the free encyclopedia http://en.wikipedia.org/wiki/HTML HTML From Wikipedia, the free encyclopedia HyperText Markup Language ( HTML ) is the main HTML markup language for displaying web pages and other (HyperText Markup Language) information that can be displayed in a web browser. Filename .html, .htm HTML is written in the form of HTML elements extension consisting of tags enclosed in angle brackets (like <html> ), within the web page content. HTML tags most Internet text/html commonly come in pairs like <h1> and </h1> , although media type some tags, known as empty elements , are unpaired, for Type code TEXT example <img> . The first tag in a pair is the start tag , the second tag is the end tag (they are also called opening Uniform Type public.html tags and closing tags ). In between these tags web Identifier designers can add text, tags, comments and other types of Developed by World Wide Web Consortium & text-based content. WHATWG The purpose of a web browser is to read HTML Type of Markup language documents and compose them into visible or audible web format pages. The browser does not display the HTML tags, but Extended SGML uses the tags to interpret the content of the page. from HTML elements form the building blocks of all websites. Extended to XHTML HTML allows images and objects to be embedded and Standard(s) can be used to create interactive forms. It provides a ISO/IEC 15445 means to create structured documents by denoting W3C HTML 4.01 structural semantics for text such as headings, paragraphs, (http://www.w3.org/TR/1999 lists, links, quotes and other items. -
Platform Independent Web Application Modeling and Development with Netsilon Pierre-Alain Muller, Philippe Studer, Frédéric Fondement, Jean Bézivin
Platform independent Web application modeling and development with Netsilon Pierre-Alain Muller, Philippe Studer, Frédéric Fondement, Jean Bézivin To cite this version: Pierre-Alain Muller, Philippe Studer, Frédéric Fondement, Jean Bézivin. Platform independent Web application modeling and development with Netsilon. Software and Systems Modeling, Springer Ver- lag, 2005, 4 (4), pp.424-442. 10.1007/s10270-005-0091-4. inria-00120216 HAL Id: inria-00120216 https://hal.inria.fr/inria-00120216 Submitted on 21 Feb 2007 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. Platform Independent Web Application Modeling and Development with Netsilon PIERRE-ALAIN MULLER INRIA Rennes Campus de Beaulieu, Avenue du Général Leclerc, 35042 Rennes, France pa.muller@ uha.fr PHILIPPE STUDER ESSAIM/MIPS, Université de Haute-Alsace, 12 rue des Frères Lumière, 68093 Mulhouse, France ph.studer@ uha.fr FREDERIC FONDEMENT EPFL / IC / UP-LGL, INJ œ Station 14, CH-1015 Lausanne EPFL, Switzerland frederic.fondement@ epfl.ch JEAN BEZIVIN ATLAS Group, INRIA & LINA, Université de Nantes, 2, rue de la Houssinière, BP 92208, 44322 Nantes, France jean.bezivin@ lina.univ-nantes.fr Abstract. This paper discusses platform independent Web application modeling and development in the context of model-driven engineering. -
Websockets, JSON, HTML, CSS) Webpods When Installed Motivation Create Web Pages to Display Control System Data
Web pods Accessing Control Data Through Web Standards (WebSockets, JSON, HTML, CSS) WebPODS when installed Motivation Create web pages to display control system data WebPODS (Protocol Oriented Distribution Service) • The Web PODS aims to provide real-time publish/subscribe communication using • WebSockets • JSON • Pure HTML/CSS widgets • Main benefits: • Uses web standards (any web client in any language) • Widgets can be configured through standard CSS • Data access outside of control network (possibly WAN) • Web pages do not need to live on the same server where the gateway is Chrome extension: Simple Web Socket Client HTML Probe (Danielle Connolly, UMich) Test javascript client (Danielle Connolly, UMich) Text monitor examples LED examples WebPODS Specify server location Adding text-monitor Adding led Specify color for “LOW” enum value GWT client (Enrique Schuhmacher, BNL) Using CS-Studio off site through Web Pods WebPODS Architecture WebPODS clients WebPODS Server Web Pods server configuration [xxx@diirt ~]# more .diirt/pods/web/mappings.xml <?xml version='1.0' encoding='UTF-8'?> <mappings version="1"> <mapping channel="calibration/constants" substitution="file:///path/to/file/table.csv" permission="READ_ONLY"/> <mapping channel="public-.*" permission="READ_WRITE"/> <mapping channel="cf-tag-(.\w)" substitution="=cfQuery($1)" permission="READ_ONLY"/> <mapping channel="sim/(.*)" substitution="sim://$1" permission="READ_ONLY"/> </mappings> Access security planned, not yet implemented • Use wss (like https) for authentication • Use username/role/unix group/host for authorization Be careful not to expose too much Web Pods • Rebroadcast data using Web sockets and JSON • Play nice with firewalls, get WAN notifications, data available to web tools, server is one class (no logic, a pass-through to pvmanager), should scale (different sockets on different servers, not tested) • Not a substitute to CA/PVA. -
Seamless Offloading of Web App Computations from Mobile Device to Edge Clouds Via HTML5 Web Worker Migration
Seamless Offloading of Web App Computations From Mobile Device to Edge Clouds via HTML5 Web Worker Migration Hyuk Jin Jeong Seoul National University SoCC 2019 Virtual Machine & Optimization Laboratory Department of Electrical and Computer Engineering Seoul National University Computation Offloading Mobile clients have limited hardware resources Require computation offloading to servers E.g., cloud gaming or cloud ML services for mobile Traditional cloud servers are located far from clients Suffer from high latency 60~70 ms (RTT from our lab to the closest Google Cloud DC) Latency<50 ms is preferred for time-critical games Cloud data center End device [Kjetil Raaen, NIK 2014] 2 Virtual Machine & Optimization Laboratory Edge Cloud Edge servers are located at the edge of the network Provide ultra low (~a few ms) latency Central Clouds Mobile WiFi APs Small cells Edge Device Cloud Clouds What if a user moves? 3 Virtual Machine & Optimization Laboratory A Major Issue: User Mobility How to seamlessly provide a service when a user moves to a different server? Resume the service at the new server What if execution state (e.g., game data) remains on the previous server? This is a challenging problem Edge computing community has struggled to solve it • VM Handoff [Ha et al. SEC’ 17], Container Migration [Lele Ma et al. SEC’ 17], Serverless Edge Computing [Claudio Cicconetti et al. PerCom’ 19] We propose a new approach for web apps based on app migration techniques 4 Virtual Machine & Optimization Laboratory Outline Motivation Proposed system WebAssembly -
A Light-Weight Time Protocol Based on Common Web Standards
A light-weight time protocol based on common web standards M. Gutbrod, T. Klein, D. Sibold Physikalisch-Technische Bundesanstalt 38116 Braunschweig, Germany [email protected] Abstract—Distributed systems are an essential part of Industry Highest accuracy can be reached by using PTP (Precision 4.0 and IoT. In order to perform properly they depend on time Protocol) if the IT infrastructure fully complies to PTP unambiguous time information while their stripped-down requirements [4]. The current standard only provides an hardware prevents the use of extensive protocols and algorithms. experimental annex for the integrity protection of PTP messages We developed a light-weight protocol for time transmission aiming which was never well adopted and implemented. Thus, the for simplicity, security and broad applicability by relying solely on current effort to revise the PTP specification includes a plan to common web standards. In this paper the new websocket time provide a new security mechanism for PTP. protocol (WST) will be presented. Our aim was to develop a light-weight and secure time Keywords—time protocol, websocket, ntp, time transmission, protocol that is universally usable. Therefore, it is solely based WST on technologies that are available on virtually every IoT device communicating via internet. I. INTRODUCTION The digital transformation is, among others, driven by the II. WEBSOCKET emergence of distributed systems which may for example Websocket was developed to allow efficient bidirectional consist of a large number of sensors performing measuring tasks. communication with low overhead over TCP connections and is In order to correlate their data, it is important that all sensors, or designed to be compatible with the HTTP protocol. -
An Introduction to AJAX
An Introduction to AJAX By : I. Moamin Abughazaleh Page 2 /25 How HTTP works? Classical HTTP Process 1. The visitor requests a page Page 3 /25 2. The server send the entire HTML, CSS and Javascript code at once to the client 3. So, the communication is synchronious Page 4 /25 What is Javascript programming actually? What is Javascript programming? It is programming the browsers. So, we are limited to the objects that the Page 5 /25 browser presents us An Alternative for Managing requests - AJAX AJAX stands for Asynchronous JavaScript And XML. AJAX is based on XMLHttpRequest object of Page 6 /25 Javascript - so the browser and XMLHttpRequest is a standard http://www.w3.org/TR/XMLHttpRequest/ It was introduced with IE-5.0 as an ActiveX object (1999) Later all the major browsers added XMLHttpRequest into their object bases. AJAX = Asynchronous JavaScript and XML It is a technique for creating better, faster, and more interactive web applications With XMLHttpRequest object JavaScript can trade data with a web server, without reloading Page 7 /25 the page AJAX uses “asynchronous data transfer” => allowing web pages to request small bits of information from the server instead of whole pages We can create desktop application like web applications using AJAX, this paradigm is also called “WEB 2.0” programming AJAX - Based on Web Standards AJAX is based on the following web standards: XHTML and CSS Presentation DOM Dynamic display of and interaction with data XML and XSLT Tranfering data back and forth Page 8 /25 XMLHttpRequest Asynchronous transfer of data Javascript Bring these technologies together AJAX applications are browser and platform independent The XMLHttpRequest object is supported in Internet Explorer 5.0+, Safari 1.2, Mozilla 1.0 / Firefox, Opera 8+, and Netscape 7. -
Web-Based Information Visualisation Using Javascript and Webgl
Eurographics Conference on Visualization (EuroVis) (2014) Short Papers N. Elmqvist, M. Hlawitschka, and J. Kennedy (Editors) FluidDiagrams: Web-Based Information Visualisation using JavaScript and WebGL Keith Andrews1 and Benedict Wright2 1Institute for Information Systems and Computer Media (IICM), Graz University of Technology, Austria 2Institute for Software Technology (IST), Graz University of Technology, Austria Abstract Much attention has been focused on the provision of information graphics and visualisations inside a web browser. Currently available infovis toolkits produce graphical output by either injecting SVG nodes into the DOM or using the JavaScript Canvas 2D API. FluidDiagrams is a prototype information visualisation framework written in JavaScript which uses the WebGL 3D JavaScript API for its output, falling back to Canvas 2D as necessary, via the Three.js library. Six visualisations are currently implemented: bar chart and line chart, scatter plot and parallel coordinates for multidimensional data, and cone tree and hyperbolic for hierarchies. Anecdotally, visualisations using SVG nodes in the DOM for output can become rather sluggish when display- ing more than a few dozen items. Visualisations using Canvas 2D exhibit similarly slow performance. WebGL utilises hardware acceleration where available and promises much better performance for complex visualisations, potentially in the order of many thousands of items without becoming unresponsive. A comparison of parallel coordinates visualisations with 100 records in 20 dimensions compared three imple- mentations: FluidDiagrams (WebGL), FluidDiagrams (Canvas 2D), and D3 (using SVG nodes). They achieved 62, 6, and 10 frames per second respectively. The FluidDiagrams (WebGL) implementation was able to render 1,000 records in 20 dimensions at 18 frames per second, compared to 1 and 6 respectively. -
The Viability of the Web Browser As a Computer Music Platform
Lonce Wyse and Srikumar Subramanian The Viability of the Web Communications and New Media Department National University of Singapore Blk AS6, #03-41 Browser as a Computer 11 Computing Drive Singapore 117416 Music Platform [email protected] [email protected] Abstract: The computer music community has historically pushed the boundaries of technologies for music-making, using and developing cutting-edge computing, communication, and interfaces in a wide variety of creative practices to meet exacting standards of quality. Several separate systems and protocols have been developed to serve this community, such as Max/MSP and Pd for synthesis and teaching, JackTrip for networked audio, MIDI/OSC for communication, as well as Max/MSP and TouchOSC for interface design, to name a few. With the still-nascent Web Audio API standard and related technologies, we are now, more than ever, seeing an increase in these capabilities and their integration in a single ubiquitous platform: the Web browser. In this article, we examine the suitability of the Web browser as a computer music platform in critical aspects of audio synthesis, timing, I/O, and communication. We focus on the new Web Audio API and situate it in the context of associated technologies to understand how well they together can be expected to meet the musical, computational, and development needs of the computer music community. We identify timing and extensibility as two key areas that still need work in order to meet those needs. To date, despite the work of a few intrepid musical Why would musicians care about working in explorers, the Web browser platform has not been the browser, a platform not specifically designed widely considered as a viable platform for the de- for computer music? Max/MSP is an example of a velopment of computer music. -
WTP-101 Developing Web Applications with Standards Using W3C Org Standard Technologies Such As, HTML, CSS, XML, XSD and XSL Attributions
WTP-101 Developing Web Applications with Standards using W3C org standard technologies such as, HTML, CSS, XML, XSD and XSL Attributions • World Wide Web Consortium – http://www.w3c.org • Sandra Clark – CSS for Better Sites – CFUN04 – http://www.cfconf.org/ This course is made available under a Creative Commons Attribution-Share Alike 3.0 License Copyright 2008, Eteration A.S. Web Standards Module Road Map ●Web Standards ●Web Architecture: Resources, URI and HTTP ●HTML and XHTML ●XML, XML Schemas and XML Parsing ●CSS ●XSLT This course is made available under a Creative Commons Attribution-Share Alike 3.0 License Copyright 2008, Eteration A.S. What are Web Standards • Worldwide Web Consortium (W3C) – Recommends Standards for Web Development • Recommendations: http://www.w3.org Specifications for the Web's formats and protocols must be compatible with one another and allow (any) hardware and software used to access the Web to work together This course is made available under a Creative Commons Attribution-Share Alike 3.0 License Copyright 2008, Eteration A.S. w3c.org – The “one” web • The W3C Technology Stack Figure: http://www.w3.org/Consortium/technology This course is made available under a Creative Commons Attribution-Share Alike 3.0 License Copyright 2008, Eteration A.S. What Standards? • Standards for the Web means: – Structural Languages • HTML – Publishing Language of the Web • XHTML - Extensible Hypertext Markup Language 1.0 and 1.1 • XML - Extensible Markup Language 1.0 – Transformations • XSL - Extensible Stylesheet Language • XPath – XML Path Language – Presentation • CSS - Cascading Style Sheets Levels 1 and 2 – as well as emerging standards, such as those for television and PDA based User Agents This course is made available under a Creative Commons Attribution-Share Alike 3.0 License Copyright 2008, Eteration A.S. -
A Declarative Approach Based on Xforms
Helsinki University of Technology Publications in Telecommunications Software and Multimedia Teknillisen korkeakoulun tietoliikenneohjelmistojen ja multimedian julkaisuja Espoo 2006 TML-A16 WEB USER INTERACTION - A DECLARATIVE APPROACH BASED ON XFORMS Mikko Honkala Dissertation for the degree of Doctor of Science in Technology to be presented with due permission of the Department of Computer Science and Engineering, for pub- lic examination and debate in Auditorium T2 at Helsinki University of Technology (Espoo, Finland) on the 12th of January, 2007, at 12 noon. Helsinki University of Technology Department of Computer Science and Engineering Telecommunications Software and Multimedia Laboratory Teknillinen korkeakoulu Tietotekniikan osasto Tietoliikenneohjelmistojen ja multimedian laboratorio Distribution: Helsinki University of Technology Telecommunications Software and Multimedia Laboratory P.O.Box 5400 FIN-02015 HUT Tel. +358-9-451 2870 Fax. +358-9-451 5014 c Mikko Honkala ISBN-13 978-951-22-8565-5 ISBN-10 951-22-8565-7 ISSN 1456-7911 ISBN-13 978-951-22-8566-2 (PDF) ISBN-10 951-22-8566-5 (PDF) ISSN 1455 9722 (PDF) URL: http://lib.tkk.fi/Diss/ Otamedia Oy Espoo 2006 ABSTRACT Author Mikko Honkala Title Web User Interaction - a Declarative Approach Based on XForms Published Doctoral thesis, Helsinki University of Technology, 2006 Keywords XML, User Interfaces, User Interaction, XForms, UIDL, XHTML This thesis studies next-generation web user interaction definition languages, as well as browser software architectures. The motivation comes from new end-user requirements for web applications: demand for higher interaction, adaptation for mobile and multimodal usage, and rich multimedia content. At the same time, there is a requirement for non- programmers to be able to author, customize, and maintain web user interfaces.