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HTML WebSockets

HTML WebSockets
WebSocket is a protocol providing full-duplex communications channels over a single TCP connection. The WebSocket protocol was standardized by the IETF as RFC 6455 in 2011, and the WebSocket API in Web IDL is being standardized by the W3C. Technical overview[edit] Browser implementation[edit] WebSocket protocol handshake[edit] To establish a WebSocket connection, the client sends a WebSocket handshake request, for which the server returns a WebSocket handshake response, as shown in the following example:[9]:section 1.2 Client request: GET /chat HTTP/1.1 Host: server.example.com Upgrade: websocket Connection: Upgrade Sec-WebSocket-Key: x3JJHMbDL1EzLkh9GBhXDw== Sec-WebSocket-Protocol: chat, superchat Sec-WebSocket-Version: 13 Origin: Server response: HTTP/1.1 101 Switching Protocols Upgrade: websocket Connection: Upgrade Sec-WebSocket-Accept: HSmrc0sMlYUkAGmm5OPpG2HaGWk= Sec-WebSocket-Protocol: chat Note that each line ends with an EOL (end of line) sequence, \r\n.

Microformats nicokaiser/php-websocket Push technology General use[edit] Push services are often based on information preferences expressed in advance. This is called a publish/subscribe model. A client "subscribes" to various information "channels" provided by a server; whenever new content is available on one of those channels, the server pushes that information out to the client. Synchronous conferencing and instant messaging are typical examples of push services. Other uses of push-enabled web applications include market data distribution (stock tickers), online chat/messaging systems (webchat), auctions, online betting and gaming, sport results, monitoring consoles, and sensor network monitoring. Examples[edit] HTTP server push[edit] HTTP server push (also known as HTTP streaming) is a mechanism for sending unsolicited (asynchronous) data from a web server to a web browser. Generally the web server does not terminate a connection after response data has been served to a client. Pushlet[edit] Long polling[edit] Flash XMLSocket relays[edit]

Comet (programming) Comet is a web application model in which a long-held HTTP request allows a web server to push data to a browser, without the browser explicitly requesting it.[1][2] Comet is an umbrella term, encompassing multiple techniques for achieving this interaction. All these methods rely on features included by default in browsers, such as JavaScript, rather than on non-default plugins. The Comet approach differs from the original model of the web, in which a browser requests a complete web page at a time.[3] The use of Comet techniques in web development predates the use of the word Comet as a neologism for the collective techniques. Comet is known by several other names, including Ajax Push,[4][5] Reverse Ajax,[6] Two-way-web,[7] HTTP Streaming,[7] and HTTP server push[8] among others.[9] Even if not yet known by that name, the very first Comet implementations date back to 2000,[18] with the Pushlets, Lightstreamer, and KnowNow projects.

Ratchet - PHP WebSockets À la pointe - Comprendre la puissance des WebSockets À l'heure actuelle, le World Wide Web n'est pas conçu pour être un moyen de communication en temps réel. Les applications Web donnent une impression de continuité grâce aux solutions d'interrogation classiques implémentées via AJAX ou peut-être aux requêtes à interrogation longue, alors qu'elles sont en fait implémentées par des bibliothèques ad hoc telles que SignalR et Comet. Pour les besoins de la plupart des applications, l'interrogation est une bonne solution, bien qu'elle risque de pâtir d'une latence client vers serveur et serveur vers client. Dans cet article, je vais explorer une nouvelle alternative nommée WebSocket. L'intégration croissante entre les applications Web et mobiles avec les réseaux sociaux réduit le seuil de délai tolérable dans l'interaction client/serveur. Le protocole HTTP ne permet pas d'atteindre une connectivité sans temps mort entre les clients Web et les serveurs. Le protocole WebSocket Utilisation du protocole WebSocket aujourd'hui

EEML Dinahmoe – Adaptive Music And Interactive Sound Design Power Soccer Review, Tips, Guide, Cheats power soccer (6) la power soccer (5) la power soccer (4) la power soccer (3) la power soccer (2) la power soccer (1) la Overview What’s explosive about it: Good Playerbase Smooth Gameplay Mouse Control Power Soccer is the web’s best free 3D action football game! Featured Video Power Soccer Clip 2 Runtime Web Service Architecture A Web service is a method of communications between two electronic devices over a network. It is a software function provided at a network address over the web with the service always on as in the concept of utility computing. The W3C defines a Web service as: a software system designed to support interoperable machine-to-machine interaction over a network. The W3C also states: We can identify two major classes of Web services:REST-compliant Web services, in which the primary purpose of the service is to manipulate XML representations of Web resources using a uniform set of stateless operations; andArbitrary Web services, in which the service may expose an arbitrary set of operations.[2] Explanation[edit] Many organizations use multiple software systems for management. Different software might be built using different programming languages, and hence there is a need for a method of data exchange that doesn't depend upon a particular programming language. Web API[edit] Criticisms[edit]

Apresentando WebSocket: trazendo soquetes para a web O problema: conexões de baixa latência de cliente-servidor e servidor-cliente A web tem sido construída com base no conhecido paradigma de solicitação/resposta de HTTP. Um cliente carrega uma página da web e, em seguida, nada acontece até que o usuário clique na próxima página. Por volta de 2005, o AJAX começou a deixar a web mais dinâmica. Mesmo assim, toda a comunicação HTTP era direcionada pelo cliente, o que exigia interação do usuário ou sondagem periódica para carregar novos dados do servidor. No entanto, todas essas soluções compartilham um problema: elas carregam a sobrecarga de HTTP, que não é adequada para aplicativos de baixa latência. Apresentando WebSocket: trazendo soquetes para a web A especificação WebSocket define uma API que estabelece conexões de "soquete" entre um navegador da web e um servidor. Primeiros passos Para abrir uma conexão WebSocket, basta chamar o construtor WebSocket: var connection = new WebSocket(' ['soap', 'xmpp']);

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