HTTPHTTPcompression is a capability that can be built into web server s and web client s to make better ... 24eb4f312e0e.mspx?mfr true title Using HTTPCompression IIS 6.0 accessdate 9 February 2010 publisher Microsoft Corporation ref HTTP data is Data compression compressed before it is sent from the server ... being used. Internet Explorer 6, which drops to HTTP 1.0 without features like compression ... Encoding field in the HTTP request, with supported compression schema names called content coding ... the zlib compression and the raw deflate compression. ref cite web url http www.vervestudios.co ... supported as of March 2011. ref cite web url http www.vervestudios.co projects compression tests ... Format for Java Archives. ref SDCH sdch Google Shared Dictionary Compression for HTTP bzip2 free ... PCCRPT Servers that support HTTPcompression SAP NetWeaver Internet Information Services Microsoft ... only supporting gzip ref cite web url http www.vervestudios.co projects compression tests title Compression Tests accessdate 23 March 2011 publisher Verve Studios, Co ref ref cite web url http mark.koli.ch ... The compression in HTTP can also be achieved by using the functionality of server side scripting ... trac wiki Docs ModCompress Compression with lighttpd http www.codinghorror.com blog 2004 08 httpcompression and iis 6 0.html Coding Horror HTTPCompression on IIS 6.0 http www.15seconds.com Issue 020314.htm 15 Seconds Web Site Compressionhttp www.http compression.com HTTPCompression resource page ... Using HTTPCompression by Martin Brown of Server Watch http www.devshed.com c a PHP Using HTTPCompression in PHP Make Your Web Pages Load Faster Using HTTPCompression in PHP http toolspot.org http compression.php check httpcompression https banu.com blog 38 dynamic and static httpcompression with apache httpd Dynamic and static HTTPcompression with Apache httpd Category Web development Category Lossless compression algorithms Category HTTP cs HTTPcompression ... more details
HTTP Shared Dictionary Compression over HTTP SDCH is a data compression method aimed to reduce Data redundancy redundancy across HTTP responses proposed by Google ref http www.blogs.zeenor.com wp content uploads 2011 01 Shared Dictionary Compression over HTTP.pdf A Proposal for Shared Dictionary Compression Over HTTP whitepaper ref . This is implemented in Google Chrome . This is proposed modification to HTTP 1.1. SDCH is using VCDIFF RFC 3284 for the compression. References Reflist External links http groups.google.com group SDCH SDCH Google Group http code.google.com p mod sdch mod sdch Apache implementation of shared dictionary compression over http note project is inactive WWW stub Category HTTP Category Application layer protocols Category Web browsers Category World Wide Web ... more details
wiktionary compression compressor Compression may refer to In physical science Compression physical , the result of the subjection of a material to compressive stress Compression member , a class of structural ... of volume change resulting from pressure Gas compression , raising the pressure and reducing the volume of gases Compression ratio , a figure of merit of an internal combustion engine Compression geology , a system of forces that tend to decrease the volume of rocks In information science Data compression , the process of encoding digital information using fewer bits Audio compression data , the compression of digital audio streams and files Bandwidth compression , a reduction in either the time to transmit or in the amount of bandwidth required to transmit Compression artifact , noticeable defects in audio or video that has been compressed Image compression , the application of data compression on digital images Video compression , the compression of digital video streams and files One way compression function , a cryptographic primitive In engineering Dynamic range compression , a compression process that reduces the dynamic range of an audio signal Gain compression , in electronic ... Brain compression , a potentially fatal condition where pressure is exerted on the brain by internal bleeding Bandage Compression bandage Compression bandage , a bandage that uses compression to reduce the flow of blood Intravenous pyelogram compressionCompression in pyelography involves pressing on the lower abdominal area, resulting in distension of the upper urinary tract. In mathematics Compression functional analysis , the compression of a linear operator T on a Hilbert space to a subspace K is the operator Other Compression phonetics , running syllables together in informal speech Please ..., until this articl is created, please do not shorten the description. Compression zoology when an animal ... See also Compaction disambiguation compress Compression shorts Compressor disambiguation Decompression ... more details
HTTP 2.0 is the next planned version of the HTTP network protocol used by the World Wide Web . HTTP 2.0 is being developed by the Hypertext Transfer Protocol Bis httpbis working group of the IETF . ref cite web url https datatracker.ietf.org wg httpbis charter title Hypertext Transfer Protocol Bis httpbis Charter publisher IETF date 2012 ref HTTP 2.0 would be the first new version of the HTTP protocol since HTTP 1.1. Goals for HTTP 2.0 include asynchronous connection multiplexing, header compression, and request response pipelining, while maintaining full backwards compatibility with the transaction semantics of HTTP 1.1. As of 2012 , work being presented for consideration by the httpbis working group includes Google s currently deployed SPDY protocol, and Microsoft s HTTP Speed Mobility proposal. ref cite web url http www.extremetech.com computing 124153 sm vs spdy microsoft and google battle over the future of http 2 0 title S&M vs. SPDY Microsoft and Google battle over the future of HTTP 2.0 publisher ExtremeTech author Sebastian Anthony date March 28, 2012 ref Many of the architectural approaches in these protocols were explored earlier by the World Wide Web Consortium s HTTP NG working group. Work on the HTTP NG project was suspended in 1998. ref cite web url http www.w3.org Protocols HTTP NG Activity.html title Final HTTP NG Activity Statement publisher World Wide Web Consortium ref References reflist External links http tools.ietf.org html draft mbelshe httpbis spdy 00 http tools.ietf.org html draft montenegro httpbis speed mobility 01 Category HTTP Category Application layer protocols Category World Wide Web network stub ... more details
Refimprove date September 2007 HTTPHTTP Tunneling is a technique by which communications performed using various network Protocol computing protocol s are encapsulated using the HTTP protocol, the network protocols in question usually belonging to the TCP IP family of protocols. The HTTP protocol therefore .... The HTTP stream with its covert channel is termed an HTTP Tunnel. HTTP Tunnel software consists of client server HTTP Tunneling applications that integrate with existing application software, permitting ..., networks behind proxy servers, and Network address translation NATs . Usage An HTTP Tunnel is used ... that wishes to communicate with a remote host opens an HTTP connection to a mediator server ... with the mediator server using HTTP request s, encapsulating the actual communications within those ... in question. Symmetrically, when it receives data from the remote host, it wraps it in the HTTP protocol before sending it as part of an HTTP response to the application. In this situation, the application ... communicated with. HTTP CONNECT Tunneling A variation of HTTP tunneling when behind an HTTP Proxy Server is to use the CONNECT HTTP method. ref cite IETF title Hypertext Transfer Protocol HTTP 1.1 ..., the client asks an HTTP Proxy server to forward the Transmission Control Protocol TCP connection to the desired destination using the CONNECT HTTP method. The server then proceeds to make the connection ... request is HTTP after that, the server simply proxies the established TCP connection. This mechanism is how a client behind an HTTP proxy can access websites using Secure Sockets Layer SSL i.e. HTTPS . Not all HTTP Proxy Servers support this feature, and even those that do may limit the behaviour ... t appear to be SSL . HTTP Tunneling without using CONNECT In some networks, the use of CONNECT method is restricted to some trusted sites. In this cases, a HTTP tunnel can be implemented using only usual HTTP methods as POST, GET, PUT and DELETE. This is similar to the approach used in Bidirectional ... more details
HTTP The HTTP response List of HTTP status codes status code 301 Moved Permanently is used for permanent redirection. This status code should be used with the HTTP location location header. RFC 2616 states that If a client has link editing capabilities, it should update all references to the Request URI. The response is cachable. Unless the request method was HEAD, the entity should contain a small hypertext note with a hyperlink to the new URI s . If the 301 status code is received in response to a request of any type other than GET or HEAD, the client must ask the user before redirecting. Example Client request pre GET index.php HTTP 1.1 Host www.example.org pre Server response pre HTTP 1.1 301 Moved Permanently Location http www.example.org index.asp pre Search Engines Google recommends using a 301 redirect to change the URL of a page as it is shown in search engine results. ref 301 redirects Webmaster Tools Help http support.google.com webmasters bin answer.py?hl en&answer 93633 ref Notes Reflist See also Hypertext Transfer Protocol List of HTTP status codes Category HTTP status codes web stub ar 301 de Weiterleitung id HTTP 301 ru HTTP 301 ... more details
HTTP The HTTP response List of HTTP status codes status code 302 Found is a common way of performing a redirection. It is an example of industry practice contradicting the standard HTTP 1.0 specification RFC 1945 , which required the client to perform a temporary redirect the original describing phrase was Moved Temporarily , but popular browsers implemented it as a HTTP 303 303 See Other ref cite web last Lawrence first Eric url http blogs.msdn.com b ieinternals archive 2011 08 19 understanding the impact of redirect response status codes on http methods like head get post and delete.aspx work EricLaw s IEInternals blog accessdate 20 August 2011 title HTTP Methods and Redirect Status Codes ref , i.e. changing the request type to GET regardless of what it had been originally. Therefore, HTTP 1.1 added status codes 303 and HTTP 307 307 to disambiguate between the two behaviours. However, the majority of Web applications and frameworks still use the 302 status code as if it were the 303. Citation needed date October 2009 This status code should be used with the HTTP location location header. Example Client request pre GET index.html HTTP 1.1 Host www.example.com pre Server response pre HTTP 1.1 302 Found Location http www.iana.org domains example pre See also Hypertext Transfer Protocol List of HTTP status codes References Reflist External links RFC 2616 HTTP 1.1 RFC 1945 HTTP 1.0 Category HTTP status codes ... more details
HTTP The HTTP response List of HTTP status codes status code 303 See Other is the correct manner in which to redirect web applications to a new Universal Resource Identifier URI , particularly after an HTTP POST has been performed. This response indicates that the correct response can be found under a different URI and should be retrieved using a GET method. The specified URI is not a substitute reference for the original resource. This status code should be used with the HTTP location location header, as described below. 303 See Other has been proposed as one way of responding to a request for a Universal Resource Identifier URI that identifies a real world object according to Semantic Web theory the other being the use of hash URIs . ref http www.w3.org TR cooluris Cool URIs for the Semantic Web , see section 4 ref For example, when building a Restful web service that needs to return to the caller immediately but continue executing asynchronously such as a long lived image conversion , the web service can provide a status check URI that allows the original client who requested the conversion to check on the conversion s status. This status check web service should return 303 See Other to the caller when the task is complete, along with a URI from which to retrieve the result in the Location HTTP header field. ref Subbu Allamaraju. RESTful Web Services Cookbook Solutions for Improving Scalability and Simplicity . O Reilly Media, 2010, p. 20. ref Example Client request pre GET HTTP 1.1 Host www.example.com pre Server response pre HTTP 1.1 303 See Other Location http example.org other pre See also RFC 2616 HTTP 1.1 RFC 1945 HTTP 1.0 Hypertext Transfer Protocol List of HTTP status codes Post Redirect Get References reflist Category HTTP status codes Category Article Feedback 5 web stub id HTTP 303 pt HTTP 303 ... more details
HTTP The HTTP Location header is returned in responses from an HTTP server under two circumstances 1. To ask a web browser to load a different web page. It is passed as part of the List of HTTP headers response by a web server when the requested URI has Moved temporarily, or Moved permanently In this circumstance, the Location header should be sent with an HTTP status code of 3xx. 2. To provide information about the location of a newly created resource. In this circumstance, the Location header should be sent with an HTTP status code of 201 or 202. ref name RESTful Web Services cite book last Leonard ... isbn 978 0 596 52926 0 pages 228 230 ref While the internet standard RFC 1945 HTTP 1.0 requires a complete absolute URI for redirection, ref name rfc2616 RFC 2616 HTTP 1.1 ref ref name rfc1945 RFC 1945 HTTP 1.0 ref the most popular web browsers tolerate the passing of a relative URL as the value for a Location ... rfc3305 RFC 3305 URIs, URLs, and URNs ref e.g., nowiki http , https , telnet , mailto nowiki ref name uri schemes http www.iana.org assignments uri schemes.html IANA Uniform Resource Identifer URI Schemes ref and conforms to scheme specific syntax and semantics. For example, the HTTP scheme specific syntax and semantics for HTTP URLs requires a host web server address and absolute path , with optional ... as when used as a request URI for a resource. ref name rfc2616sec322 http www.w3.org Protocols rfc2616 rfc2616 sec3.html sec3.2.2 RFC 2616 Section 3.2.2 HTTP URL ref Client request pre GET index.html HTTP 1.1 Host www.example.com pre Server response pre HTTP 1.1 302 Found Location http www.example.org ... specifies the URI returned to be absolute. ref name rfc2616sec1430 http tools.ietf.org html rfc2616 ... URL. Client request pre GET blog HTTP 1.1 Host www.example.com pre Server response pre HTTP 1.1 302 Found Location blog pre References references See also URL redirection Category HTTP Category HTTP headers Location ... more details
HTTP In the HTTP used on the World Wide Web , 403 Forbidden is an List of HTTP status codes HTTP status code returned by a web server when a user requests a web page or media that the server does not allow them to. In other words, the server can be reached, but the server declined to allow access to the page. This response is returned by the Apache HTTP Server Apache web server when directory listings have been disabled. Microsoft Internet Information Services IIS responds in the same way when directory listings are denied. This response may also be returned by the server if the client issued a WebDAV PROPFIND request but did not also issue the required Depth header, or issued a Depth header of infinity. ref name RFC 4918 cite web url http www.webdav.org specs rfc4918.html rfc.section.9.1.1 title HTTP Extensions for Web Distributed Authoring and Versioning WebDAV date June 2007 publisher IETF accessdate November 10, 2009 ref 403 substatus error codes for IIS 403.1 Execute access forbidden. 403.2 Read access forbidden. 403.3 Write access forbidden. 403.4 SSL required. 403.5 SSL 128 required. 403.6 IP address rejected. 403.7 Client certificate required. 403.8 Site access denied. 403.9 Too many users. 403.10 Invalid configuration. 403.11 Password change. 403.12 Mapper denied access. 403.13 Client certificate revoked. 403.14 Directory listing denied. 403.15 Client Access Licenses exceeded. 403.16 Client certificate is untrusted or invalid. 403.17 Client certificate has expired or is not yet valid. 403.18 Cannot execute request from that application pool. See also .htaccess List of HTTP status codes Rewrite engine References reflist 2 External links http www.getnetgoing.com HTTP 403.html Help for HTTP 403 Forbidden errors http docs.fedoraproject.org selinux user guide f10 en ... R t httpd sys content t web DEFAULTSORT Http 403 Category HTTP status codes Web stub el HTTP 403 ko HTTP 403 ja HTTP 403 pt HTTP 403 sq HTTP 403 ... more details
HTTP Image HTTP pipelining2.svg thumb left 300px Schema of non pipelined vs. pipelined connection. HTTP pipelining is a technique in which multiple HTTP requests are sent on a single TCP connection without waiting for the corresponding responses. ref cite web url http www.w3.org Protocols rfc2616 rfc2616 sec8.html sec8.1.2.2 title part of Hypertext Transfer Protocol HTTP 1.1 Section 8.1.2.2 Pipelining ... improvement ref cite web url http www.w3.org Protocols HTTP Performance Pipeline.html title Network Performance Effects of HTTP 1.1, CSS1, and PNG publisher World Wide Web Consortium accessdate ... several HTTP requests in the same Transmission Control Protocol TCP Packet information technology packet , HTTP pipelining allows fewer TCP packets to be sent over the Computer networking network , reducing network load . Non idempotence computer science idempotent methods like POST HTTP POST should ... requests in the sequence depend on the effect of others. ref cite web url http www.w3.org Protocols rfc2616 rfc2616 sec9.html sec9.1.2 title part of Hypertext Transfer Protocol HTTP 1.1 Section 9.1.2 Idempotent Methods date June 1999 publisher W3C accessdate 2009 05 16 ref HTTP pipelining requires both the client and the server to support it. HTTP 1.1 conforming servers are required to support pipelining ... is only supported in HTTP 1.1, not in 1.0. Implementation in web servers Implementing pipelining in web ... working implementation that is enabled by default. All other browsers HTTP pipelining is disabled or not implemented. ref cite web url http lwn.net Articles 362473 title Reducing HTTP latency with SPDY ... url http www.microsoft.com windowsxp expertzone chats transcripts 08 0814 ez ie8.mspx title Windows ..., however it is disabled by default. ref http kb.mozillazine.org Network.http.pipelining ref ref cite ... hg.mozilla.org releases mozilla 2.0 file 09565753ce5f netwerk protocol http src nsHttpConnection.cpp ... 17 , but version 18 beta supports pipelining http but not https as a non default option ... more details
Infobox Software name CL HTTP logo screenshot caption author John C. Mallery programming language Common Lisp released 1994 latest release version latest release date operating system Cross platform genre Web Server license Proprietary website url http cl http.org 8000 CL HTTP is a web server, client and proxy written in Common Lisp . It is based on its own web application framework . It was written by John C. Mallery starting in 1994 on a Symbolics Lisp Machine . In the same year a port to Macintosh Common Lisp was done. In 1996 CL HTTP added support for the HTTP 1.1 protocol. It runs on Unix , Linux , BSD BSD variants , Mac OS X , Solaris operating system Solaris , Symbolics Genera and Microsoft Windows . CL HTTP makes extensive use of the Common Lisp Object System and the macro capabilities of Lisp. ref A Common LISP Hypermedia Server, John C. Mallery, Proceedings of The First International Conference on The World Wide Web, Geneva CERN, May 25, 1994. ref Usage CL HTTP has been used in several applications. ELM ART is a tutoring system written in Common Lisp using CL HTTP. ref ELM ART An intelligent tutoring system on world wide web Peter Brusilovsky, Elmar Schwarz und Gerhard Weber ..., http www.springerlink.com content fnj2687uxrj21640 Springer ref It was later commercialized as NetCoach ... 2002 ref InterBook is an early adaptive electronic text book, also written on top of CL HTTP. ref ..., Gerhard, WebNet 96 Conference Proceedings San Francisco, CA, October 15 19, 1996 ref Cl HTTP has ..., Volume 40 Issue 5, May 1997 ref ref An HTTP Interface to Common Music, Heinrich Taube, Tobias Kunze ... on Acoustics, Speech, and Signal Processing, 1997. ICASSP 97., 1997 http citeseerx.ist.psu.edu viewdoc download?doi 10.1.1.130.8585&rep rep1&type pdf PDF ref CL HTTP is an example of a non trivial ... Caching Proxy Client References references External links http cl http.org 8000 CL HTTP website http clhttp.plasticki.com CL HTTP Primer Common Lisp Application frameworks DEFAULTSORT Cl Http Category ... more details
Wikipedia Link rot HTTP The 404 or Not Found error message is a Hypertext Transfer Protocol HTTP List of HTTP status codes standard response code indicating that the Web Browser client was able to communicate .... ref http royal.pingdom.com 2009 05 06 the 5 most common http errors according to google The 5 most common HTTP errors according to Google ref A 404 error should not be confused with Web server server ... does not guarantee the same content. Overview When communicating via HTTP, a server is required ... two digits indicate the specific error encountered. HTTP s use of three digit codes is similar ... Transfer Protocol NNTP . At the HTTP level, a 404 response code is followed by a human readable reason phrase . The HTTP specification suggests the phrase Not Found ref cite web url http www.w3.org ... traffic and longer loading times will be generated. ref cite web url http www.thesitewizard.com archive ... ref ref cite web url http www.wdvl.com Authoring Design Images Favicon work Web Developers Virtual ... http help.yahoo.com l uk yahoo search webcrawler slurp 10.html title Why is your crawler asking for strange ... when using certain HTTP server software, for example with the Apache HTTP Server Apache software ... http example.com error.html nowiki rather than a relative path error.html . ref cite web url http ... date 10 September 2004 accessdate 6 March 2011 ref Other ISPs return a HTTP 403 forbidden error in the same circumstances. ref http iwfwebfilter.thus.net error blocked.html DEMON Error 403 ref The practice ... ref cite news url http www.bangkokpost.com tech technews 11872 the old fake 404 not found routine ... last Sambandaraksa accessdate 12 September 2010 ref and Tunisia . ref cite web url http opennet.net ... named Ammar 404 who represents the invisible censor . ref cite web url http advocacy.globalvoicesonline.org ... arm of the Royal Mail Post Office ref name autogenerated1 cite news url http news.bbc.co.uk 1 ... Sahala last Swenson title Make your 404 pages more useful url http googlewebmastercentral.blogspot.com ... more details
Unreferenced date February 2010 ASP.NET HTTP Handlers are a new technique presented in ASP.NET that was not present in the Classic Active Server Pages ASP . HTTP Handlers are components that implement the code System.Web.IHttpHandler code interface. Unlike ASP.NET Pages they have no HTML markup file, no events and other supporting. All they have is a code file written in any List of CLI languages .NET compatible language that writes some data to the server HTTP response. ASP.NET handlers have .ashx file extension unlike pages, that have .aspx file extension . Handlers are considered to be more lightweight object than pages. That s why they are used to serve dynamically generated images, on the fly generated Portable Document Format PDF files and similar content to the web browser . External links http msdn.microsoft.com en us library system.web.ihttphandler lightweight .aspx IHttpHandlers at MSDN Category ASP.NET ... more details
HTTP In computing, POST is one of many HTTP Request methods request methods supported by the HTTP protocol used by the World Wide Web . The POST request method is used when the client needs to send data to the server as part of the request, such as when uploading a file or submitting a completed form. In contrast to the GET HTTP GET request method where only a URL and headers are sent to the server. POST requests also include a message body, this allows for arbitrary length data of any type to be sent to the server. A header field in the POST request usually indicates the message body s Internet media type . Use for submitting web forms When a web browser sends a POST request from a form web web form element, the default Internet media type is application x www form urlencoded . ref cite web title Hypertext Markup Language 2.0 Forms date 22 September 1995 accessdate 15 January 2011 last Berners Lee first1 Tim authorlink1 Tim Berners Lee last2 Connolly first2 Dan authorlink2 Dan Connolly url http www.w3.org MarkUp html spec html spec 8.html SEC8.2.1 publisher World Wide Web Consortium ref This is a format for encoding Associative array key value pairs with possibly duplicate keys. Each key value pair is separated by an & character, and each key is separated from its value by an character ... on all other non alphanumeric ref cite web title Forms in HTML documents url http www.w3.org ... ref RFC 2616, http www.w3.org Protocols rfc2616 rfc2616 sec9.html sec9.1.1 9.1.1 Safe Methods ref ... http www.cs.tut.fi jkorpela forms methods.html title Methods GET and POST in HTML forms what s the difference ... ref See also Postback References reflist External links http www.jmarshall.com easy http postmethod Straightforward definition of POST http www.w3.org Protocols rfc2616 rfc2616 sec9.html POST verb in HTTP specification http www.w3.org 2001 tag doc whenToUseGet.html URIs, Addressability, and the use of HTTP GET and POST Category HTTP cs POST pl POST metoda ... more details
refimprove date January 2011 HTTP The HTTP referer originally a misspelling of referrer that occurs as an List of HTTP header fields HTTP header field identifies, from the point of view of an Internet ... proposal by computer scientist Phillip Hallam Baker to incorporate the field into the HTTP specification. ref name hallam baker Hallam Baker, Phillip. http groups.google.com group alt.folklore.computers .... ref name fielding Fielding, Roy. http lists.w3.org Archives Public ietf http wg old 1995JanApr 0107.html Re Referer sic . HTTP wg, 1995 03 09 ref Referer has since become a widely used spelling in the industry when discussing HTTP referers usage of the misspelling is not universal, though ... it is to be displayed. The referer field is an optional part of the HTTP request sent by the web browser ... URI of the resource from which the Request URI was obtained http tools.ietf.org html rfc2616 ... name sendRefererHeader http kb.mozillazine.org Network.http.sendRefererHeader network.http.sendRefererHeader .... Referer hiding Most web servers maintain logs of all traffic, and record the HTTP referer ... server and manipulate the HTTP request, while web based methods load websites within frames ..., this method of redirection is discouraged by the World Wide Web Consortium W3C . ref http www.w3.org TR WCAG10 HTML TECHS meta element w3.org ref If a website is accessed from a HTTP Secure HTTPS ... is not sent. ref Clients SHOULD NOT include a Referer sic header field in a non secure HTTP request if the referring page was transferred with a secure protocol. http tools.ietf.org html rfc2616 section ... in order to instruct the user agent not to send a referer. ref http www.globinch.com 2011 01 21 ... dereferrer RFC 2616 Hypertext Transfer Protocol HTTP 1.1 http www.ietf.org rfc rfc3987.txt IRI ... Category HTTP headers cs HTTP referrer de Referrer fr R f rant ko it Referer he Referer lv HTTP referer hu Referer ja HTTP pl HTTP referrer pt HTTP referrer ru HTTP referer zh HTTP referrer ... more details
Use dmy dates date April 2012 HTTP An ETag , or entity tag , is part of Hypertext Transfer Protocol HTTP , the protocol for the World Wide Web . It is one of several mechanisms that HTTP provides for web ... http www.w3.org 1999 04 Editing title Editing the Web Detecting the Lost Update Problem Using Unreserved ... from their comparison. Deployment risks The use of ETags in the HTTP header is optional not mandatory as with some other fields of the HTTP 1.1 header . The method by which ETags are generated has never been specified at any time in the HTTP specification. Common methods of ETag generation ... server will return the resource along with its corresponding ETag value, which is placed in an HTTP ... may send back a very short response with an HTTP 304 Not Modified status. The 304 status ... ETags ETags can be used to track unique users ref cite web url http www.arctic.org dean tracking without cookies.html title tracking without cookies date 17 February 2003 ref , as HTTP cookie s are increasingly ..., including Hulu.com , are using ETags for tracking purposes. ref cite web url http papers.ssrn.com ..., ref cite web url http ashkansoltani.org docs respawn redux.html title Respawn Redux date 11 August ... tracking cookies partially involving the use of ETags. ref http www.extremetech.com internet ... addon safehistory ref References Reflist Refbegin http www.w3.org Protocols rfc2616 rfc2616 sec14.html sec14.19 ETag in HTTP 1.1 specification http iwaw.europarchive.org 04 Clausen.pdf Concerning Etags and Datestamps by Lars R. Clausen 2004 Refend External links http httpd.apache.org docs 2.2 mod core.html fileetag Apache HTTP Server Documentation FileETag Directive http www.w3.org 1999 04 ... 1999. http devel.squid cache.org old projects.html etag Old SQUID Development projects ETag support completed in 2001 http trac.lighttpd.net trac wiki Docs 3AConfigurationOptions LighttpdCoreOptions ETag in Lighttpd http www.infoq.com articles etags Using ETags to Reduce Bandwidth & Workload with Spring ... more details
lang en . For more information see Wikipedia Secure server HTTP technical date October 2011 Hypertext Transfer Protocol Secure HTTPS is a combination of the Hypertext Transfer Protocol HTTP with the Transport ... Protocol Secure HTTP S HTTP specified in RFC 2660. Overview details Transport Layer Security HTTPS is a URI scheme which has identical syntax to the standard HTTP scheme, aside from its scheme .... SSL is especially suited for HTTP since it can provide some protection even if only one side of the communication is authentication authenticated . This is the case with HTTP transactions over ... ref Technical Difference from HTTP HTTPS URLs begin with https and use List of TCP and UDP port numbers port 443 by default, where HTTP URL s begin with http and use List of TCP and UDP port numbers port 80 by default. HTTP is unsecure and is subject to man in the middle and eavesdropping attacks ... deprecated versions of SSL . Network layers HTTP operates at the highest layer of the OSI Model , the Application layer but the security protocol operates at a lower sublayer, encrypting an HTTP message ... protocol, but refers to use of ordinary HTTP over an encryption encrypted SSL TLS connection ... ref cite web url http www.sslshopper.com article free ssl certificates from a free certificate authority.html ... accessdate 2009 10 24 ref ref cite web url http www.techrepublic.com blog networking secure outlook ... SSL Services publisher namecheap accessdate 30 jan 2012 ref and 1,500 ref cite web url http ... Chrome , Firefox , ref cite web url http www.mozilla.com en US legal privacy firefox en.html ... May 2009 ref Opera web browser Opera , ref cite news url http news.softpedia.com news Opera 8 launched ... 13 May 2009 ref and Internet Explorer on Windows Vista ref cite web url http msdn.microsoft.com en ... the browser whether or not the certificate is still valid. ref cite web url http tools.ietf.org html ... can be inferred by knowing only the intercepted request response size. ref cite web url http sysd.org ... more details
HTTP A cookie , also known as an HTTP cookie , web cookie , or browser cookie , is a piece of data stored .... ref cite web url http tools.ietf.org html rfc6265 section 3 work IETF title HTTP State Management ... computer ref Adam Penenberg. http www.slate.com id 2129656 Cookie Monsters . Slate magazine Slate ... that prompted European and US law makers to take action. ref name eulaw cite news url http www.bbc.co.uk ... 08 ref ref cite web url http adage.com article digital sen rockefeller ready a real track bill 227426 ... url http news.cnet.com 8301 10789 3 9918582 57.html first Robert last Vamosi title Gmail cookie stolen ... in June 1994. ref cite news url http www.nytimes.com 2001 09 04 technology 04COOK.html work ... a Shopping cart software virtual shopping cart . ref name ks Jey Kesan and Rajiv Shah. http .... HTTP Cookies Standards, privacy, and politics. ACM Transactions on Internet Technology, 1 2 , 151 198, 2001. doi 10.1145 502152.502153 an expanded version is freely available at http arxiv.org abs cs.SE ... , released on October 13, 1994, ref cite web url http wp.netscape.com newsref pr newsrelease1.html ... Web.archive.org date accessdate 2010 05 22 archiveurl http web.archive.org web 20061207145832 http wp.netscape.com newsref pr newsrelease1.html archivedate 2006 12 07 ref ref cite web url http ... Explorer in version 2, released in October 1995. ref cite news first Sandi last Hardmeier url http ... Engineering Task Force IETF was formed. Two alternative proposals for introducing state in HTTP transactions ... Session cookie A session cookie ref name mscookie Microsoft Support http support.microsoft.com kb ... session cookies when it quits. A session cookie is created when no HTTP cookie Expires and Max Age ... a server via HTTP Secure HTTPS , ensuring that the cookie is always encrypted when transmitting from ... ref ref name httponlyrfc IETF http tools.ietf.org html rfc6265 HTTP State Management Mechanism ... when transmitting HTTP or HTTPS requests, thus restricting access from other, non HTTP APIs such as JavaScript ... more details
Expert subject Computing date May 2011 Adaptive compression is a type of data compression which changes compression algorithm s based on the type of data being compressed. ref name PCMag Cite web url http www.pcmag.com encyclopedia term 0,2542,t adaptive compression&i 37503,00.asp work PC Magizine Encyclopedia title Adaptive compression accessdate 21 April 2011 ref References reflist Category Data compression Computing stub ... more details
Texture compression is a specialized form of image compression designed for storing texture map s in 3D computer graphics rendering systems. Unlike conventional image compression algorithms, texture compression algorithms are optimized for random access . How it works In their seminal paper on http graphics.stanford.edu projects flashg papers texture compression texture compression ref Citation author Andrew Beers coauthors Maneesh Agrawala, Navin Chaddha title Rendering from Compressed Textures journal Computer Graphics, Proc. SIGGRAPH year 1996 pages 373 378 ref , Beers, Agrawala and Chaddha list four features that tend to differentiate texture compression from other image compression techniques. These features are Decoding Speed It is highly desirable to be able to render directly from the compressed texture data and so, in order not to impact rendering performance, decompression must ... , any texture compression scheme must allow fast random access to decompressed texture data. This tends to rule out image compression schemes such as JPEG or Run length encoding . Compression Rate and Visual Quality In a rendering system, lossy compression can be more tolerable than for other use cases. Encoding Speed Texture compression is more tolerant of asymmetric encoding decoding rates as the encoding ..., most texture compression algorithms involve some form of fixed rate lossy compression lossy vector ... maps, texture compression may also be used to encode other kinds of rendering map, including bump map s and normal mapping surface normal map s. Texture compression may also be used together with other ... of practical texture compression systems are S3 Texture Compression , PVRTC and Ericsson Texture Compression . OpenGL and OpenGL ES, as implemented on many video accelerator cards and mobile GPUs, can support multiple common kinds of texture compression generally through the use of vendor extensions ... Compression Category Texture compression compu graphics stub de Texturkomprimierung es Compresi n de ... more details
In telecommunication , the term signal compression has the following meanings In analog usually audio systems, reduction of the dynamic range of a Signalling telecommunication signal by controlling it as a function of the inverse relationship of its instantaneous value relative to a specified reference level. Signal compression is usually expressed in decibel dB . Instantaneous values of the input signal that are low, relative to the reference level, are increased, and those that are high are decreased. Signal compression is usually accomplished by separate devices called compressors. It is used for many purposes, such as a improving signal to noise ratios prior to digitizing an analog signal for transmission telecommunications transmission over a digital carrier system , b preventing overload of succeeding elements of a system, or c matching the dynamic ranges of two devices. Signalling telecommunication Signal compression in dB may be a linear or nonlinear function of the signal level across the frequency band radio band of interest and may be essentially instantaneous or have fixed or variable delay times. Signal compression always introduces distortion , which is usually not objectionable, if the compression is limited to a few dB. The original dynamic range of a compressed signal may be restored by a Electronic circuit circuit called an Companding expander . FS1037C MS188 See also Companding Dynamic range compression Further reading http www.atis.org tg2k signal compression.html Definition signal compressionhttp users.ece.gatech.edu vkm nii node36.html Signal Compressionhttp www.ece.ucsb.edu scl Signal Compression Lab UCSB http www.stanford.edu group compression Signal Compression and Classification Group Stanford Category Electronics terms Category Signal processing Category Telecommunications terms he ... more details
compression methods like JPEG2000, JPEG and JPEG XR HD Photo http dvd hq.info data compression.php Data Compression Basics includes comparison of PNG, JPEG and JPEG 2000 formats http datacompression.dogma.net ... http www.iprg.co.in IPRG Open group related to image processing research resources Compression Methods ...nofootnotes date April 2010 The objective of image compression is to reduce irrelevance and redundancy ... technique Lossy and lossless compression Image compression may be lossy compression lossy or lossless compression lossless . Lossless compression is preferred for archival purposes and often for medical imaging, technical drawings, clip art , or comics. This is because lossy compression methods, especially when used at low bit rate s, introduce compression artifact s. Lossy methods are especially ... loss of fidelity is acceptable to achieve a substantial reduction in bit rate. The lossy compression that produces imperceptible differences may be called visually lossless compression visually lossless . Methods for lossless image compression are Run length encoding used as default method in PCX and as one ... code s Methods for lossy compression Reducing the color space encoding color space to the most ... image processing quantization and entropy coding . Fractal compression . Other properties The best image quality at a given bit rate or compression rate is the main goal of image compression, however, there are other important properties of image compression schemes Scalability generally refers ... compression . Other names for scalability are progressive coding or embedded bitstreams . Despite ..., and author or copyright information. Processing power . Compression algorithms require different amounts of processing power to encode and decode. Some high compression algorithms require high processing power. The quality of a compression method often is measured by the Peak signal to noise ratio . It measures the amount of noise introduced through a lossy compression of the image, however ... more details
url http www.recoveryshorts.com.au title Women s pregnancy compression shorts 2011 05 31 ref See also Compression sportswear Rugby shorts Sports clothing References reflist Men s undergarments Clothing ...Compression shorts are underwear undergarments usually worn by athletes. They are form fitting garment s and when worn cover the athlete s waist to mid or lower thigh. These garments are often made from a spandex type material, similar to cycling shorts . A major benefit of compression shorts are that they keep the thigh muscles warm to reduce muscle strain and fatigue. In addition, there is some evidence that compression shorts may enhance athletic performance. ref cite journal doi 10.1080 0264041031000101971 author Doan BK, Kwon YH, Newton RU, et al. title Evaluation of a lower body compression ... They are also used as a way to keep the male genitalia in place. Compression shorts also help to keep .... Another major benefit is that many compression shorts are designed to wick sweat away from the body ... things like walking or running when the thighs are adducted. There are also other types of compression garments that serve a similar function, such as compression t shirts, socks, sleeves & tights ... such as compression shorts have seen an increase in popularity, arguably because of their comparable function and less embarrassing looks. ref cite web url http www.slate.com id 2123007 title Where have all the jockstraps gone? work Slate Magazine 2005 07 22 ref Compression shorts are also popular among ..., athletes wear compression shorts under the skirt so if they fall over and their skirts ride up ... both being no contact sports in which players often wear skirts . In this situation, compression shorts are colloquially identified as spandex shorts. Women also wear compression shorts in tennis where most recently, compression shorts have been produced with ball pockets for convenience. There are also women s compression shorts for use before, during and after pregnancy. Pregnancy compression shorts ... more details
File Compression test.jpg right thumb 250px Compression test on a universal testing machine Physical compression is the result of the subjection of a material or structure to Stress mechanics compressive stress , which results in reduction of volume as compared to an uncompressed but otherwise identical state. The opposite of compression in a solid is tension physics tension . In any medium transmitting waves, the opposite of compression is rarefaction . In simple terms, compression is a pushing force. Explanation Compression has many implications in materials science , physics and structural engineering , for compression yields noticeable amounts of Stress physics stress and tension mechanics tension . By inducing compression, mechanical properties such as compressive strength or modulus of elasticity , can be measured. Scientist s and engineer s may utilize compression machines to measure the resistance of materials and structures to compression. Compression machines range from very small table top systems to ones with over 53 MN capacity. ref Citation last NIST title Large Scale Structure Testing Facility url http www.nist.gov bfrl facilities instruments large scale struct testing fac.cfm accessdate 04 05 2010 postscript . ref In engines Internal combustion engines In internal combustion engine s it is a necessary condition of economy to compress the explosive mixture before it is ignited in the Otto cycle , for instance, the second stroke of the piston effects the compression of the charge which has been drawn into the cylinder by the first forward stroke. Steam engines The term is applied to the arrangement by which the exhaust valve of a steam engine is made to close ... in the mechanism due to the inertia of the reciprocating parts are lessened. This compression, moreover ... stroke. See also Box compression test Buckling Compression member Longitudinal wave P wave ... f sica ru simple Physical compression ... more details
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