This site houses links to the documentation, source code repository, issues list and information related to GWT roadmap and release. This Java API provides both server and client side components: Server: everything in the javax. WebSocketClient. This method expects an object that conforms to the WebSocket. It's very hard to find websocket library that works with Java SE (or I'm looking at Stack Overflow. Although Socket. If there is a security manager, its checkConnect method is called with the proxy host address and port number as its arguments. You state that you plan to implement the server in Java, but you do not mention on what platforms the non-web clients might be implemented. This is a very good place to look for code snippets and examples. A web socket is a TCP socket connection between the client and the server. SockJS is a java script library which provides websocket like object for browsers. The WebSocket protocol is symmetrical after the connection has been established; the client and the server can send messages to each other at any time while the connection is open, and they can close the connection at any time. over(ws) method. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. It also has some developer-oriented documentation for Mozilla products, such as Firefox Developer Tools. I got a answer of a user that i should try this plugin. The Java community is best served by one standard API for using WebSocket in an application. js will use the Web browser native WebSocket class to create the WebSocket. Apr 13, 2016 · 3 min read. WebSockets are sockets that can be used from a web browser based on a protocol that allows two way full duplex communication. WebSocket is a web technology providing for bi-directional, full-duplex communications channels, over a single Transmission Control Protocol (TCP) socket. Create a Spark Maven Project. Tutorial to create a Websocket Java Client using JSR 356 (Websocket) API. 0 technology, it's programmatically easy to set the HttpOnly flag on a cookie. NET Core application. As of late 2018, Stack Overflow (Stack Exchange) have migrated away from NetGain, instead using Kestrel's inbuilt web-socket support over HTTP/1. Tomcat monitor application Tomcat8w is a GUI application for monitoring and configuring Tomcat services. Programming, Web Development, and DevOps news, tutorials and tools for beginners to experts. com:1234), send message (add channel) and listen to Stack Overflow. On Github, they have a nearly identical number of stars with 11,300 for Django, and 10,900 for Flask. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Actually i have kept a logging our application to identify the reason for closure. answer any questions you may have on Stack Overflow. > - Server finishes sending the message, calls endMessage, which calls > writeMessagePart which throws an. I credit Twitter's epic rise to the availability of a simple but rich API. js: 'use strict'; let. JSR 356 is part of the upcoming Java EE 7 standard. En este artículo aprenderemos a implementar WebSocket con Java, ya que en el pasado ya había dado una completa Introducción a los WebSocket y explicamos que estos fueron introducidos como una mejora en HTML5, pero también dijimos que los WebSocket son ejecutados por el navegador, y estos requieren de dos partes, un WebSocket cliente (Navegador) y un WebSocket Server (Backend). Well, not exactly. Server endpoints have to explicitly specify a SeedBaseEndpointConfigurator to be managed by Seed. Other than Spark, we are going to use a simple Java HTML Builder to generate our chat messages. Basically, just like how nginx can forward different request to several instances of the web app based on the path or hostname, it can also be configured to "forward" the request to a websocket server instance. What are good alternatives that plug easily into Spring and. After both ends of a TCP/IP socket are connected, communication is bi-directional. The Java community is best served by one standard API for using WebSocket in an application. WebSockets are a new way for Web clients to communicate with servers and vice versa, without the overhead of an HTTP protocol. In fact setHttpOnly and isHttpOnly methods are available in the Cookie interface , and also for session cookies (JSESSIONID) :. @ClientEndpoint and @ServerEndpoint. Finally, WebSocket is part of Java EE 7, so you can use other technologies in the Java EE 7 stack. Until now… Last week, with the 1. WebSockets is useful when there is a sequences of. Java SE 6 Downloads. jar"/> that you have an infinite recursion resulting in a stack overflow. With WebSockets, we need to handle lots of problems that are taken care of in HTTP on their own. I did find some external libraries but either they had no SSL support or it didn't make any difference. JSON Pointer (IETF RFC 6901) defines a string format for identifying a specific value within a JSON document. over(ws) method. There are two main benefits WebAssembly provides:. The WebSocket API was introduced with Java EE7, in this example we'll create a client which will send a message to the server and the server will send it back. Aquilo que pretendo é mais básico do que um chat. websocketの規格を用いてWebアプリケーションを作成しているのですが、 websocketで通信している時にhttpのセッションの値を参照したいと考えております。 現状のJavaのコード. These examples are extracted from open source projects. JSR 356 — Java API for WebSockets. The NuGet Gallery is the central package repository used by all package authors and consumers. Built on top of asyncio , Python’s standard asynchronous I/O framework, it provides an elegant coroutine-based API. In this blog post we're going to cover how to use WebSockets to create real-time web applications. Web developers can follow development, check feature status, download Safari Technology Preview to try out the latest web technologies, and report bugs. Download JDK 9, a development environment for building applications and components using the Java programming language. The pros are mainly the ability to communicate both ways, low latency and small communication overhead. A WebSocket application keeps a long‑running connection open between the client and the server, facilitating the development of real‑time applications. The SockJS client will attempt to connect to "/gs-guide-websocket" and use the best transport available (websocket, xhr-streaming, xhr-polling, etc). Answer Wiki. WebSocket is designed to be implemented in web browsers and web servers, but it can be used by any client or server application. Now here's an exercise. The underlying classes are implemented java. Tyrus is the open source JSR 356 - Java API for WebSocket reference implementation for easy development of WebSocket applications. java:1019) As near as I can tell, it looks like for some reason no bytes are getting transferred from inData to dst, repeatedly. The client can send messages and the server can receive messages at any time, as long as there is an active WebSocket connection between the server and the client. To add a platform, type cordova platform add. For a project I'm building in Spring I'd like to implement websocket. Websocket - Server Using HttpListener and Client With ClientWebSocket. The goal of the OWIN interface is to decouple server and application, encourage the development of simple modules for. Пишу веб сокет сервер на языке java. I have recently written a project using SignalR, which supports HTML 5 WebSocket. js) are coming to JavaScript. Respondents said the positive aspects of searching for a new job include the new opportunities, technologies, and people that a new position can offer. js web application framework that provides a robust set of features for web and mobile applications. I wrote a websocket server in Spring Boot and a client in Javascript. The Apache Incubator is the entry path into The Apache Software Foundation for projects and codebases wishing to become part of the Foundation’s efforts. Theano, Flutter, KNime, Mean. In Java SE 9, Oracle Corp is going to release New HTTP 2 Client API to support HTTP/2 protocol and WebSocket features. angular8-springboot-websocket(frontend): This project is used to develop single page application using Angular 8 as front-end technology. The Search Engine for The Central Repository. The Java community is best served by one standard API for using WebSocket in an application. Eclipse Mosquitto is an open source (EPL/EDL licensed) message broker that implements the MQTT protocol versions 5. The book starts with an introduction covering the essentials, but assumes you are just refreshing, are a very fast learner, or are an expert in building web services. Introduction to WebSockets with SignalR in. If your browser client reports close code 1006, then you should be looking at the websocket. Other than Spark, we are going to use a simple Java HTML Builder to generate our chat messages. It enables device connectivity via industry standard IoT protocols - MQTT, CoAP and HTTP and supports both cloud and on-premises deployments. The WebSocket API was introduced with Java EE7, in this example we’ll create a client which will send a message to the server and the server will send it back. Works good and is lightweight. WebSocket enables you to provide full-duplex communications over a single TCP connection by using a stream of messages rather than a stream of bytes. JDK 9 has been superseded. One of the problems I faced was that I was not waiting long enough for the first message to arrive. Azure Service Fabric is a distributed systems platform that makes it easy to package, deploy, and manage scalable and reliable microservices and containers. SignalR servers don't know if the client is dead or not and they rely on notification from the underlying websocket for connection failures, that is, the OnClose callback. maakolk pushed a commit to maakolk/Java-WebSocket that referenced this pull request Mar 5, 2017 Merge pull request TooTallNate#260 from 6wunderkinder/master … 3363735. 4 and the Glassfish 4 server, which comes bundled with NetBeans. Currently Connection plugin done for handling WebSocket connection. websocketの規格を用いてWebアプリケーションを作成しているのですが、 websocketで通信している時にhttpのセッションの値を参照したいと考えております。 現状のJavaのコード. One of those is the new HTTP client API which supports HTTP/2 and WebSocket and, hopefully, will replace the legacy HttpUrlConnection API, the low level and painful API. A key is an object that you use to retrieve a value at a later date. The Grizzly NIO framework has been designed to help developers to take advantage of the Java™ NIO API. Unfortunately my client is using WebSocket and I have no other choice. NET Core is access to features like WebSockets. Java SE does not contain the websocket implementation. First, we need to create a Spark Maven project (→ Tutorial) Dependencies. select method which somehow always returns immediately without. By the end of this tutorial, you will gain an intermediate level of expertise in Spring Boot. The intended use-case is as follows: I want to create a service in Java that accepts connections from modern web browsers. x server module that may be used to process requests using the WebSocket protocol by an Apache 2. At least when some clients will be based on web browsers, as for added web programming convenience, you may want to use a protocol such as Socket. The typical Internet server is similarly hardened, expecting malicious clients of all stripes. (Note: I experienced some problems with this version, I made some changes to it and will including it in the source files) There are various WebSocket implementations; if one doesn't work, you can try another or just continue with the tutorial. Currently I am using a ExecutorService with SingleThreadedExecutor and each onMessage update from the websocket I am submitting to the service. Request you to share the way to reconnect WebSocket or any other better way to handle it. AcceptWebSocketRequest. Websocket - Server Using HttpListener and Client With ClientWebSocket. The Python IDE for the web. select method which somehow always returns immediately without. answer any questions you may have on Stack Overflow. Stack Overflow em Português is a question and answer site for programadores profissionais e entusiastas. I'm surprised that nothing was logged anywhere though, even with a FINE log level. the client opens a connection to a server that is listening for a WebSocket request; a client connects to a server using a URI. Built on top of asyncio, Python's standard asynchronous I/O framework, it provides an elegant coroutine-based API. The WebSocket object provides the API for creating and managing a WebSocket connection to a server, as well as for sending and receiving data on the connection. Respondents said the positive aspects of searching for a new job include the new opportunities, technologies, and people that a new position can offer. NET WebSocket support. WebSocket is distinct from HTTP. java:1019) As near as I can tell, it looks like for some reason no bytes are getting transferred from inData to dst, repeatedly. Just to give details I also add my codes below. Part 1 gives an overview to WebSocket protocol and. HttpListener), to start a self-hosted service. And the reason that we got is. JMeter WebSocket Samplers. Mas evite … Pedir esclarecimentos ou detalhes sobre outras respostas. Other than Spark, we are going to use a simple Java HTML Builder to generate our chat messages. I have a server deployed to glassfish 4. Peter Lubbers makes an introduction to HTML5 Web Sockets explaining how they interact with proxy servers, and what proxy configuration or updates are needed for the Web Sockets traffic to go through. OWIN defines a standard interface between. Hundreds of free publications, over 1M members, totally free. The intended use-case is as follows: I want to create a service in Java that accepts connections from modern web browsers. This Java API provides both server and client side components: Server: everything in the javax. This site houses links to the documentation, source code repository, issues list and information related to GWT roadmap and release. In that sense Stack Overflow is like a celebrity owned restaurant, only it should be around for a while. Returns a Set that contains the keys. In this tutorial, you create Java WebSocket Home, a smart home control web application based on Java EE 7. [20160311 삽질세미나자료] Node. HTTP (Hypertext Transfer Protocol) is a stateless request-response protocol. Hi! I run my java servlet class application in Coldfusion 11. SocketTimeoutException: Timeout on Read at org. IO on top of the websocket communication. java:188) 260 at java. TCP vs UDP Both use port numbers application-specific construct serving as a communication endpoint 16-bit unsigned integer, thus ranging from 0 to 65535)to provide end-to-end transport. 13 and later and all NGINX Plus releases support proxying of WebSocket connections, which allows you to utilize Socket. Try Stack Overflow for Business. js applications. ThingsBoard is an open-source IoT platform for data collection, processing, visualization, and device management. select method which somehow always returns immediately without. If there is a security manager, its checkConnect method is called with the proxy host address and port number as its arguments. A WebSocket is a standard bidirectional TCP socket between the client and the server. みんな大好きStack Overflowで関連する質問がありましたので、参考にリンクを貼らせていただきます。 Which OSI layer does WebSocket Protocol lay on? OSI参照モデルではどこに相当するのか?. stackoverflowerror: null when launching application from web browser? I have try with new or old Java install. You can check out more about working with Stack Overflow data and BigQuery here and here. Websockets on Tomcat 7 Recently I discovered Tomcat 7 supports websockets, I looked at the support and found it quite easy to use. The NuGet Gallery is the central package repository used by all package authors and consumers. Приветствую! Между клиентом и сервером через WebSocket как в синхронном, так и асинхронном режиме периодически возникает задержка пересылки пакетов в несколько секунд. With websocket processing you can do only a few tricks to further optimize a good implementation, however on the TCP/IP layer the optimization tricks can be endless and much more complicated. In that sense Stack Overflow is like a celebrity owned restaurant, only it should be around for a while. We are planning to go for client side websocket server. The address family should be AF_INET (the default), AF_INET6 or AF_UNIX. The following are top voted examples for showing how to use javax. IO on top of the websocket communication. maakolk pushed a commit to maakolk/Java-WebSocket that referenced this pull request Mar 5, 2017 Merge pull request TooTallNate#260 from 6wunderkinder/master … 3363735. WebSocket is the ideal transport for SignalR, since it makes the most efficient use of server memory, has the lowest latency, and has the most underlying features (such as full duplex communication between client and server), but it also has the most stringent requirements: WebSocket requires the server to be using Windows Server 2012 or. java:1019) As near as I can tell, it looks like for some reason no bytes are getting transferred from inData to dst, repeatedly. Websockets descripion locate in. SocketTimeoutException: Timeout on Read at org. However, the only public implementations of client and server WebSockets are supported on Windows 8 and Windows Server 2012. Java J2SSH library combined with default websockets to provide your Grails web application with live SSH interaction functionality. Any message received is sent through a Web Socket to the web socket (server) endpoint that is published by a Java Class deployed as part of the web application. Download JDK 9, a development environment for building applications and components using the Java programming language. (as well as the option to use a BukkitRunnable) EDIT: I have discovered this only occurs sometimes. But after deploying on my Server it doesn't work anymore. The Incredible Growth of Python by David Robinson on September 6, 2017 We recently explored how wealthy countries (those defined as high-income by the World Bank) tend to visit a different set of technologies than the rest of the world. http module also contains a client for WebSocket communication. Is there some sort of security issue with allowing custom headers during the websocket connection?. You can do it in any server-side language, but to keep things simple and more understandable, I chose Microsoft's language. Since Java Enterprise Edition 6 (JEE 6), which adopted Java Servlet 3. IO indeed uses WebSocket as a transport when possible, it adds some metadata to each packet: the packet type, the namespace and the ack id when a message acknowledgement is needed. Stack Overflow is a much loved programmer question and answer site written by two guys nobody has ever heard of before. SockJS works in the way that we need to provide URL to connect with message broker and then get the stomp client to communicate. From 2006-2016, Google Code Project Hosting offered a free collaborative development environment for open source projects. For the chat application in websocket. WebSocket ( RFC 6455 ) is a protocol that enables two-way persistent communication channels over TCP connections. These work fine. Until now… Last week, with the 1. Go to the Oracle Java Archive page. If you are tempted to write a real world application using only the core java networking libraries for TCP connections,. But after deploying on my Server it doesn't work anymore. WebSocket is the ideal transport for SignalR, since it makes the most efficient use of server memory, has the lowest latency, and has the most underlying features (such as full duplex communication between client and server), but it also has the most stringent requirements: WebSocket requires the server to be using Windows Server 2012 or. Developers using maven are likely to find it easier to include and manage dependencies of their applications than developers using ant or other build technologies. some code snippets refactored from stackoverflow and mozilla. Works good and is lightweight. This is a nonzero integer. 1 protocol and does not support HTTP/2 protocol and WebSocket, works only in Blocking mode and lot of performance issues. Contribute to schleichardt/stackoverflow-answers development by creating an account on GitHub. Create a Spark Maven Project. Currently I am using a ExecutorService with SingleThreadedExecutor and each onMessage update from the websocket I am submitting to the service. WebSocket uses HTTP connection to bootstrap itself. *; it is entirely possible that as we delve more into HTTP/2, we look more in the direction of SSE (EventSource). You may use websocket client library for any popular language (e. i have my business logic running in python which posts the msg in JSON format to port say 8080 using websocket server code written in. WebSocket ( RFC 6455 ) is a protocol that enables two-way persistent communication channels over TCP connections. springboot-websocket (backend): This project is used to develop WebSocket endpoint at server side using spring boot, STOMP and sock js support. As I admittedly do not fully grasp the business logic, this is more or less up to you, but basically have the session handling in an application scoped bean and inject that into the various other derived classes. A WebSocket is a two-way communication protocol. Q&A for computer enthusiasts and power users. js web application framework that provides a robust set of features for web and mobile applications. some code snippets refactored from stackoverflow and mozilla. WebSocketClient. Actually i have kept a logging our application to identify the reason for closure. 4,000+ tags are a lot. And the client we will be using is ClientWebSocket (System. NET, JavaScript, and C++. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. In the previous article, we saw how to host Websocket service as windows service. 0 the cluster module doesn’t work. However, the only public implementations of client and server WebSockets are supported on Windows 8 and Windows Server 2012. Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, PHP, Python, Bootstrap, Java and XML. A server may listen to requests from multiple clients. Projects hosted on Google Code remain available in the Google Code Archive. But now I have the same problem and Jmeter throws a java. JSR 356 is part of the upcoming Java EE 7 standard. Websockets exist to give a way to do socket communication with things that explicitly want to communicate with a browser that is running untrusted code. Passing null to the method is a no-op unless the factory was already set. Run your Python code on Azure Web Apps for Containers—a Linux-based, managed application platform. The NuGet client tools provide the ability to produce and consume packages. 0 technology, it's programmatically easy to set the HttpOnly flag on a cookie. One of those is the new HTTP client API which supports HTTP/2 and WebSocket and, hopefully, will replace the legacy HttpUrlConnection API, the low level and painful API. I got a answer of a user that i should try this plugin. As existing or Legacy HTTP Client API has numerous issues (like supports HTTP/1. In this post, I will dig dipper into WebSockets and how can we implement it in Java. "What is the best way to detect if a person is online and available for a chat session with WebSocket? There are many other WebSocket questions similar to these on Stackoverflow and other techie forums. SocketTimeoutException: Timeout on Read at org. Websockets descripion locate in. WebSocket protocol defined by IETF provides bi-directional communication between the server and the remote host. Mi problema esta al utilizar el protocolo ws Web Socket que envia una cadena. It means, you will also need at least Java SE 7 to be able to compile and run your application. I did find some external libraries but either they had no SSL support or it didn't make any difference. All code donations from external organisations and existing external projects seeking to join the Apache community enter through the Incubator. websocketの規格を用いてWebアプリケーションを作成しているのですが、 websocketで通信している時にhttpのセッションの値を参照したいと考えております。 現状のJavaのコード. Problem on Stackoverflow. WebSocket Example. What I am hoping to achieve is reliable messaging using websocket rather than an ajax style long poll. I would like to ask of anyone ever wrote web socket client in C# as e. 04, but it didn't work for me in the end. existem exemplos de chat na internet mas não consigo correr os exemplos deles, não sei se isso estará relacionado com a versão de tombcat que utilizaram nessa altura. onerror(evt) event for details. JDK 9 has been superseded. Websockets/ws. I have been pouring over all of the questions asked here about using websockets in java, but none seem to shed any light on my problem. com:1234), send message (add channel) and listen to Stack Overflow. Run your Python code on Azure Web Apps for Containers—a Linux-based, managed application platform. Preguntas y respuestas para programadores y profesionales de la informática. A terribly written question, but the term I was looking for was reverse proxy. I use websockets in my app, but its methods not run. Request you to share the way to reconnect WebSocket or any other better way to handle it. optparse uses a more declarative style of command-line parsing: you create an instance of OptionParser, populate it with options, and parse the command line. am looking for help to get usage of websocket client in unity3d. ServerSocket is a java. Some proxy servers do not like this and will drop the connection. It only takes a minute to sign up. Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, PHP, Python, Bootstrap, Java and XML. ServiceStack is an outstanding tool belt to create such a system in a frictionless manner, especially sophisticated designed and fun to use. com:1234), send message (add channel) and listen to Stack Overflow. > - Server finishes sending the message, calls endMessage, which calls > writeMessagePart which throws an. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. WebSocket and Java EE 7 - Getting Ready for JSR 356 (TOTD #181) Guest Author WebSocket is developed as part of HTML 5 specification and provides a bi-directional, full-duplex communication channel over a single TCP socket. js) are coming to JavaScript. js applications. Part 1 gives an overview to WebSocket protocol and. What are good alternatives that plug easily into Spring and. Preguntas y respuestas para programadores y profesionales de la informática. WebSocket is a technology that allows two way communication over single TCP socket. Websockets on Tomcat 7 Recently I discovered Tomcat 7 supports websockets, I looked at the support and found it quite easy to use. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. It demonstrates full duplex communication and how the server can push messages to. ServiceStack is an outstanding tool belt to create such a system in a frictionless manner, especially sophisticated designed and fun to use. src/main/webapp/ also includes a copy of angular-seed. A WebSocket is a two-way communication protocol. In this article, I will demonstrate how to host a WebSocket server in a traditional ASP. I'm learning websockets and wanted to make a websocket onmessage logger which writes the received data in a mongodb. angular8-springboot-websocket(frontend): This project is used to develop single page application using Angular 8 as front-end technology. com and not your site example. There have been some well known problems on the server side of the WebSockets and the most common solution has been to check the origin tag CSWSH. Until now… Last week, with the 1. Вопросы и ответы для программистов. Java comes with a jar utility that is used to archive multiple Java classes and other files into a file having the name extension. I am developing a project with Java EE and I have access to the server computer under a university LAN. src/main/webapp/js is the frontend. Q&A for computer enthusiasts and power users. We have a web application which currently uses Java Applets to do some operations on files in Client's File system (Browse, create, upload and Stack Exchange Network Stack Exchange network consists of 175 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and. 4 and the Glassfish 4 server, which comes bundled with NetBeans. If your browser client reports close code 1006, then you should be looking at the websocket. Built on top of asyncio , Python’s standard asynchronous I/O framework, it provides an elegant coroutine-based API. It is a two-way full duplex communication channel: the client can send data to the server and the server can send data back to the client over the same channel at any time. Using The JavaScript MQTT Client With Websockets Web browsers use the http protocol and modern ones can also use websockets. I have found a solution in the form of STOMP, but I can not find a way to send a websocket message to a single user, only a way to do a full broadcast to all clients. Fazer afirmações baseadas apenas na sua opinião; aponte referências ou experiências anteriores. This is likely due to client security rules in the WebSocket spec to prevent abusing websocket. You can vote up the examples you like and your votes will be used in our system to generate more good examples. Some proxy servers do not like this and will drop the connection. Right-click on the pubspec. These work fine. exec(), the problem is the parameter pass to the jar file, they are note recognize by it because he repond "droid needs parameters". 13 and later and all NGINX Plus releases support proxying of WebSocket connections, which allows you to utilize Socket. Go to the Oracle Java Archive page. Replace "WebSocket" with "TCP" in most of those questions. Details: java. Netty: A Different Kind of Web(Socket) Server John Boardman March 16, 2015 Java , Technology Snapshot 9 Comments Netty is used today in all kinds of applications, all over the Internet, to handle thousands (if not millions) of chat conversations, multiplayer games including Minecraft , Twitter , and many other applications. WebSocket proxying. Looking back at our example of emails and face to face conversations, emails signify HTTP protocol while face to face conversations signify WebSocket protocol. Apache Tomcat 9. Also, I'd advise to use 'select' or 'poll' instead of threading, because it scales better, especially if you need more than 10K connections. The WebSocket API is being standardized by the W3C, and the WebSocket protocol has been standardized by the IETF as RFC 6455. With websocket processing you can do only a few tricks to further optimize a good implementation, however on the TCP/IP layer the optimization tricks can be endless and much more complicated. SockJS is a java script library which provides websocket like object for browsers. You can do it in any server-side language, but to keep things simple and more understandable, I chose Microsoft's language. Websocket in Spring and Java. Get started contributing code, or reporting bugs. It is serializing the JSON and then working with the data. quote The module consists of a plugin architecture. Is using Websocket (in particular, in a Java, SpringMVC webapp, with the Spring Websocket support libs, but the question probably applies to any language) for a multiple-page website a bad idea ? I'm currently developing a website that reloads the entire page most of the times during user navigation. Part 1 gives an overview to WebSocket protocol and. This might be true in general but this doesn't answer the question as that asks if it is correct that the Stack Exchange server almost never calls done on their end, leaving the websocket from the browsers point of view in a pending (waiting for data frames if you wish) state. In my previous posts, we discovered How to Use HTML5 File Drag & Drop, and Open Files Using HTML5 and JavaScript.