Apache) needs to encrypt the data sent between the client (browser) and the web server. gz file and nothing else. I Suggest you to refer Create Table article to understand the Create Table statement. This feature is useful for us to create application that support fully bi-directional streaming of messages between client and server. Example 1: Get event logs on the local computer In the below give below result Get the ten most recent entries from a specific even Bad Smells in Code Duplicate code If you see the same code structure in more than one place. org, now after ~6 months of running via several cloud systems, I. In this tutorial you will create a web application that uses the Java API for WebSocket to enable bi-directional communication between browser clients and the application server. Date() in Mongo Script. Creating a Table and Inserting Data into It Creating a Table from a Query's Result Updating Data in a PROC SQL Table Joining Two Tables Combining Two Tables Reporting from DICTIONARY Tables Performing an Outer Join Creating a View from a Query's Result Joining Three Tables Querying an In-Line View Retrieving Values with the SOUNDS-LIKE Operator. 5 - User Guide Register Servers Create Server Groups Assign Servers to Server Groups About Categorizing Servers Backup examples. Code examples Create client socket // Create a socket connect to www. The following picture shows a screenshot of this demo running:. NET procedures can also be stored within the database (Windows only). websocket? I want to connect to websocket (ws://socket. Set the ID to com. CDI events are used to. gz compressed file: To uncompress a *. For example, to “use” a database named pizzas, start your mongo client and then issue this command: use pizzas Next, create a collection in this database. Room support. When a logon script arrives from the dedicated server,WSH makes sure that all the objects and services that the script needs are available. The complete example is available on github. In this exercise you create a new database, a new user and an example table. " This sample chapter is excerpted from Core Web Programming, by Larry Brown and Marty Hall. WebSockets will be used when the NetHttpBinding determines the service contract defines a callback contract. CREATE VIEW Statement The CREATE VIEW statement lets you create a shorthand abbreviation for a more complicated query. net membership provider tutorial with topics like creating users, roles, assign roles to users, edit / update / delete user details, recover user password using password recovery / change user password using changepassword control, etc. The underlying classes are implemented java. Bootstrap; C#; C++; Java; Maven; MongoDB; Node. Add an extension for org. Create a function allUsersButAdmin in SQL, which takes with no parameters: orientdb> CREATE FUNCTION allUsersButAdmin "SELECT FROM ouser WHERE name <> 'admin'" LANGUAGE SQL For more information, see. Apache Ant's build files are written in XML and take advantage of the open standard, portable and easy to understand nature of XML. First, you must create a request handler class by subclassing the BaseRequestHandler class and overriding its handle() method; this method will process incoming requests. In this article, we're going to create a quick example using the new Spring Framework 5 WebSockets API along with reactive features provided by the Spring WebFlux Framework. The following server program echoes anything sent from the client in reversed form (hence the name ReverseServer ). git files and directories. Refer to Create your first Java application for information on how to start developing a Java application in IntelliJ IDEA. Java HTTP example - Writing to the HTTP server from the applet. java,html5,web-applications,oracle-adf,embedded-jetty. spawnMozilla(). Tornado is a web server, so it can get users' requests directly, but deploying it behind Nginx may be a better choice for many reasons. While coming to my roles and responsibilities, ->logs management ,->logs backup->Regular deployment of applications in DEV and prod environments,->Monitoring Health checkups of all servers ,->Trouble shooting the issues based up on the priorities. Other storage types must be explicitly defined: mysql. websocket/javax. Please take a look at the offical documentation of SLF4J. Example of Java Socket Programming. It also provides several Java regular expression examples. Create a JavaScript file named, dateExample. Sun Java System Directory Server example: &(objectClass=person)(isMemberOf=cn=project‐x,dc=example,dc=com) For Sun ONE Directory Servers and newer Sun Java System Directory Servers or the older iPlanet Directory Server, you can restrict access to only those users having certain specific roles. (Java SDK) Overview. This allows for the server to notify the client at any time instead of the client polling on a regular interval for updates. In these examples you can find different ways of creating simple proxy socket servers. Deploy a Java web application inside a Tomcat server container You can use Docker to run a Tomcat server and deploy your Java web applications. js server running WebSocket. The Java application. There is a lot of interest in the Java developer community in creating web applications for the Java platform that utilize WebSocket. After the handshake, either side can send data. Apache) needs to encrypt the data sent between the client (browser) and the web server. This option marks the workspace as opted out, and no training data for that workspace will be used. the WebSocket in a servlet Java with Tomcat. We provide our own software that has unique features against the e-commerce completion. Welcome to Java Socket programming example. It takes care of handling the WebSocket connections, launching your programs to handle the WebSockets, and passing messages between programs and web-browser. It worked perfect on different browsers on a computer. NET Website creation example using some limited HTML, ASP. Following is the XML which we want to create: T-SQL Script to generate above XML:. The constructor for ServerSocket throws an exception if it can't listen on the specified port (for example, the port is already being used). com and port at 80 let client = TCPClient(address: "www. Set to google_speech to instruct the Google AI Video Transcription add-on to generate an automatic transcript raw file from an uploaded video. This Java tutorial describes how to make a socket connection to a server. Adding Server Code scripts. Room support. 10) SQL Tutorial 10: SQL Functions (What is a Function?, Different types of SQL Functions, MS SQL Server Built-in Functions with Examples, SQL String Functions, SQL Numeric Functions, SQL Date Functions, and SQL Conversion Functions. This Oracle CREATE TABLE example creates a table called customers which has 3 columns. Java WebSocket Home has a user interface for connecting and controlling fictitious devices from a web browser to a Java application. Implementing WebSockets is very simple, but there are some tricky things to consider when using it in production environments. What are WebSockets? The WebSocket Protocol is a widely supported open standard for developing real-time applications. Ratchet is a loosely coupled PHP library providing developers with tools to create real time, bi-directional applications between clients and servers over WebSockets. Before the transaction is submitted to be included in the next block, the account checks if the transaction meets certain requirements, defined in a script. This will only work when running within the Jetty Container (unlike past Jetty technologies, you cannot get Jetty WebSocket server functionality running Jetty within other containers like JBoss, Tomcat, or WebLogic). To make sure it can be referenced outside of the ButtonGrid constructor method you place it out side of that method, but within the class. In this lab, I've created an example with one server and two clients. Create a Spark Maven Project. Building a chat application with Spring Boot and WebSocket Rajeev Singh • Spring Boot • Jul 27, 2017 • 12 mins read In this article, you'll learn how to use WebSocket API with Spring Boot and build a simple group chat application at the end. Consider a simple and contrived scenario where a server listens for clients submitting serialized java objects. In C#, value types refer to other data type variables while objects are reference types. chef (executable)¶ [edit on GitHub] The chef executable is a command-line tool that does the following: Generates repositories, cookbooks, recipes, attributes, templates, and custom resources. I will (of course) be using the server that you can download as the reference for this discussion. For this example I was using GlassFish 4. Internally, Jetty manages the HTTP Upgrade to WebSocket and migration from a HTTP Connection to a WebSocket Connection. The underlying classes are implemented java. Java Regex Tutorial. I have wondered what the alternatives were to Glassfish and decided to do some research into other Open Source Java and JavaEE Application Servers. In the early days, developers relied on AJAX requests to create applications that were pretty close to realtime. custombuilder. websocket-api-1. WebSocket is a new and evolving protocol. Refer to Create your first Java application for information on how to start developing a Java application in IntelliJ IDEA. jks; Update the hostname on the test to www. Apache is a tried and tested HTTP server which comes with access to a very wide range of powerful extensions. With SmartFoxServer 2X 2. you have specified. Note: In some environments the WebSocket connection may fail due to intermediary firewalls, proxies, routers, etc. All messages (sent & listened) are in JSON format. Before doing this tutorial, it is worth while to do the Hello World tutorial. Create a WebSocket server with the Wowza Streaming Engine Java API Originally Published on 06/23/2016 | Updated on 05/08/2019 8:27 am PDT With Wowza Streaming Engine™ media server software version 4. View A view is another way to look at the data in one or more tables (or other views). x, Swing and JavaFX. In Mongo Shell, Date() command returns date string formatted in UTC. Advantage: Needs only small JDBC driver at each client. I've covered in the past how you can utilize raw websockets and convert them into observables using the RxJS library in a previous tutorial which can be found here: Angular Websockets Tutorial. Then simply open it in a browser. One of the key differentiators that sets the Kaazing WebSocket Gateway apart from other WebSocket servers is its extensive support for rich business protocols and messaging APIs on top of the WebSocket standard, including XMPP, JMS, and AMQP. INNOVATION: Apache Projects are defined by collaborative, consensus-based processes, an open, pragmatic software license and a desire to create high quality software that leads the way in its field. Akka HTTP provides a stream-based implementation of the WebSocket protocol. ANT Tutorial Apache Ant is a Java based build tool from Apache Software Foundation. WebSockets enable 2-way, duplex communication between client and server. In this tutorial you will create a web application that uses the Java API for WebSocket to enable bi-directional communication between browser clients and the application server. 5 - User Guide Register Servers Create Server Groups Assign Servers to Server Groups About Categorizing Servers Backup examples. websocketd is the WebSocket daemon. WebSocket is a cool new(ish) technology that allows real-time, two-way communication between the browser and the server, with almost no overhead. For this example I was using GlassFish 4. §WebSockets. I Suggest you to refer Create Table article to understand the Create Table statement. To create a *. com, Oracle Database first selects the access control list assigned to port 80 through 99 at server. 323 and TAPI 3 Introduction I noticed that there are many members who want to know how to create an Audio/Video Conferencing System using. Example 1: Get event logs on the local computer In the below give below result Get the ten most recent entries from a specific even Bad Smells in Code Duplicate code If you see the same code structure in more than one place. Openfire is a real time collaboration (RTC) server licensed under the Open Source Apache License. What is STOMP. 1 200 OK Server: OBS x-amz-request-id. websocket provides the necessary APIs for building client endpoints. In this tutorial we will be creating a simple web-based chat application with PHP and jQuery. Free Online Tutorials on How to install Java on CentOS;. This embedded Tomcat tutorial has only two prerequisites:. In this chapter we provide examples of operations using different programatic environments: Create Queue Tables and Queues Create a Queue Table and Queue of Object Type. This sample app shows the following features: jQuery Mobile UI. (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. The SAVE file need only include your own code, creating a smaller file that is easier to distribute. This is useful in the following scenarios: testing easily recreate all types of responses for HTTP dependencies such as REST or RPC services to test applications easily and affectively. 20 thoughts on " Java socket programming tutorial " java training. websockets is a library for building WebSocket servers and clients in Python with a focus on correctness and simplicity. After the handshake, either side can send data. Java Enum: It provides java enum tutorial with example. a method for creating the message in HTML (or JSON if you prefer). messages from one computer is not being delivered to other computer. For example, a user of the following view will only see those rows (and certain columns) in the EMPLOYEE table where the salary of a particular employee is greater than or equal to the average salary for their particular department. Running Date() command in Mongo Shell returns Date as String. the WebSocket in a servlet Java with Tomcat. In the previous article, we saw how to host Websocket service as windows service. Use a call to check which contacts are on your lists and remove individual contacts. Sockets are bound to the port numbers and when we run any server it just listens on the socket and waits for client requests. The first thing to realize about the protocol is that it is, in essence, a basic duplex TCP/IP socket connection. DCL is abbreviation of Data Control Language. IO on the server side:. So I was happily translating some java examples from the POI Quick Guide, when a blogger named Dave comments that he had already done that four years ago! Now while I am not familiar with his site, that did dampen my enthusiasm a bit ;-) Though I cannot say I am surprised. This course focuses specifically on the advanced configuration required to support a cluster of WebSphere Portal servers. This is a short tutorial on creating a websocket server in Ruby using James Coglan's websocket driver. After the handshake, either side can send data. Setting up a Test Environment. Open source. WebSocket comes in handy while writing an application that requires low-latency, bidirectional communication between a client and server. In this tutorial we will use a Java server and a JavaScript client. Servlet is a Java program that can perform dynamic operations and send it to the web server. Can someone please provide me very simple example of websocket client using javax. js tutorial, Alex Banks will explain how WebSockets work and describe their protocol. API Integration for professional email marketing. Configuring HAProxy for WebSocket October 6, 2011 Jeanfrancois Arcand Leave a comment Go to comments A lot of peoples (including myself at Wordnik ) needed to configure HAProxy in order to make WebSocket working. Because you can't write directly to the web server's filesystem (generally speaking), a little bit of CGI programming work is also required on the web server. Bootstrap; C#; C++; Java; Maven; MongoDB; Node. Client: the content of javax. server package consists of APIs for creating server endpoints and javax. We start with the Java server. It worked perfect on different browsers on a computer. Written from ground up to follow the international ISO SQL:2016 standard, it supports the complete set of the classic features, together with optional features such as stored procedures and triggers. This Oracle CREATE TABLE example creates a table called customers which has 3 columns. websocket-api-1. 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 example below. THE unique Spring Security education if you're working with Java today. gz file: 4. Using WebSocket to build an interactive web application. The user who defines the server becomes its owner. Chat Server. custombuilder and switch to the Extensions tab of the plugin. 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 example below. All the examples above will add records to tblAudit whenever a record is added, deleted or updated in tblSomething. x and Java" or on the other hand a solution based on Java EE 7 with an embedded GlassFish server from my tutorial "Creating a Chat Application using Java EE 7, Websockets and. 50 Most Frequently Used UNIX / Linux Commands (With Examples) 50 Most Frequently Used UNIX / Linux Commands (With Examples) To connect to a remote server and. 03 sec) Creating a table with a particular storage engine. Write times out after the period specified in bus. This example shows you how to create a WebSocket API server using Oracle Java. The user of the CREATE OR REPLACE procedure must have rights granted to create objects in another schema. Jump to: This example shows you how to create a WebSocket API server using Oracle Java. In addition, you cannot create a table that already exists in the current database. So that if the. zip( 28 k) The download jar file contains the following class files or Java. In this tutorial you will create a web application that uses the Java API for WebSocket to enable bi-directional communication between browser clients and the application server. WebSockets Tutorial PDF Version Quick Guide Resources Job Search Discussion Web sockets are defined as a two-way communication between the servers and the clients, which mean both the parties, communicate and exchange data at the same time. For example, a type User may comprise of the following fields: gender — which is a STRING. This provides for an efficient communication "channel" between clients and the server. This tutorial takes you step-by-step from the simplest Jetty server instantiation to running multiple web applications with standards-based deployment descriptors. In nutshell, you have to do the following: Annotate your content with RDFa; Include the Create dependencies (jQuery, jQuery UI, Underscore, Backbone, VIE, the editor of your choice) Include the Create JavaScript file (see examples/create. Simple WebSocket Server. In this tutorial we will use a Java server and a JavaScript client. nio, which allows for a non-blocking event-driven model (similar to the WebSocket API for web browsers). But, there are not so many simple stored procedure examples, which return multiple result sets. websocket provides the necessary APIs for building client endpoints. List of quick examples to create stored procedures (IN, OUT, IN OUT and Cursor parameter) in Oracle database. Create redis server Examples create redis server […] Log in to Reply. In this guide we’ll dive in and use STOMP messaging with Spring to create an interactive web application. With the help of a little Node. This is an extension from the SQL standard, which does not allow zero-column tables. Now just run the above code. Grab a copy of phpwebsockets which is a WebSocket server in PHP. But it does not work for copying directories. Example to include all the fields that starts with amonut: SELECT EXPAND( @this. Written from ground up to follow the international ISO SQL:2016 standard, it supports the complete set of the classic features, together with optional features such as stored procedures and triggers. The Real Time Messaging API is a WebSocket-based API that allows you to receive events from Slack in real time and send messages as users. This guide walks you through the process of creating a "hello world" application that sends messages back and forth, between a browser and the server. The WebSocket API in Java EE offers a powerful lifecycle model and. The accept() method waits for the client. So setting a. Java Regex Tutorial. WCF services and clients can use the NetHttpBinding binding to communicate over WebSockets. The middleware server translates the JDBC requests into database-specific calls. Lately there has been a lot of buzz around HTML5 Web Sockets, which defines a full-duplex communication channel that operates through a single socket over the Web. JDK 8 when building JDK 9. Use a PoliciesApi object to add or update the policy on Deep Security Manager. As part of the configuration of the WireMock server, the response that is to be returned when having received a request matching the expectations is configured. In this article we'll look at examples of how to use the raw WebSocket API as well as the lesser known EventSource for server-sent events (SSE) to build "real-time" UI's that are self. , you can now write both your client-side programs and server-side programs in the same language. In C#, value types refer to other data type variables while objects are reference types. The forthcoming Jython 2. 0 is the latest release of the all-new version 2 code. 19 you can specify a wildcard as ending character to inclide all the fields that start with a certain string. These stencils are black and are located in this zip file. org; Rename keystore. In this post, we have seen how easy is to create a chat application using the Java API for WebSocket (JSR 356). In this tutorial you will create a web application that uses the Java API for WebSocket to enable bi-directional communication between browser clients and the application server. Here's how you can use dojox. js file and inside that creating a service or registering a service using the service method as shown below,. For example, to “use” a database named pizzas, start your mongo client and then issue this command: use pizzas Next, create a collection in this database. To use the Jetty WebSocket Client on your own Java project you will need the following maven artifacts. Go to Start > Settings > Control Panel > Double click on the Java icon. If the plugin-cfg. In this blog post we're going to cover how to use WebSockets to create real-time web applications. For the WebSocket server implementation: Java API for WebSocket (JSR-356) is a new standard coming in JavaEE 7, so check your application server support for JavaEE7 on running the WebSocket server sample. ObjectInputStream to read from the SocketInputStream. ServerSocket is a java. Below example shows how to create custom exception by extending Exception class. HTML5 compliant web browsers provide an implementation of the specification to enable clients to connect to a WebSocket server and to send and receive data ( IE10+, Chrome 16+, Firefox 11+, Safari 6+ ). A Simple Example. Following is the XML which we want to create: T-SQL Script to generate above XML:. Java API Example. jWebSocket (Java) web-socket-ruby (ruby). Note: The resistor you need can be different from what we use depending on the type of LED you use. This object can be a plain java object, an Adapter, a Fragment, or any object created by a "parent" object such as an activity which will handle the events that are triggered. The first example might be how some Java programmers would choose to implement a program. Written from ground up to follow the international ISO SQL:2016 standard, it supports the complete set of the classic features, together with optional features such as stored procedures and triggers. Transact-SQL Create Procedure myPower(@num int,@pow int, @result int output) As Begin Declare @i int = 0; Set @result = 1 while(@i<@pow) Begin Set @result = @result * @num Set @i += 1 End End. Hence, there are two ways how you can connect websocket and server. This sample app shows the following features: jQuery Mobile UI. The next step, just like before, is to make sure that the queue exists. A protip by davidecek87 about websocket, tomcat, java, servlet, and j2ee. Create a JavaScript file named, dateExample. html somewhere on your hard drive. MySQL provides a variety of different table types with differing levels of functionality. We will use the WebSocket API to create a simple Server. The first column is called customer_id which is created as a number datatype (maximum 10 digits in length) and can not contain null values. Most variables are named at the top of the class right before the constructor. Dobb's Journal, BYTE. Tutorial to create a Websocket Java Client using JSR 356 (Websocket) API Tutorial to create a Websocket Java Client using JSR 356 (Websocket) API. Its greatest feature is that the server can actively push information to the client, and the client can also actively send information to the server. Example 1: Get event logs on the local computer In the below give below result Get the ten most recent entries from a specific even Bad Smells in Code Duplicate code If you see the same code structure in more than one place. For credentials, contact Thomson Reuters Elektron. For this you need: A Raspberry Pi with Raspian, internet, SSH, with Node. You can then type messages in the form at the bottom of the page to send STOMP messages to the queue. Example exmplObject = new Example(); In memory, you can create an object using the “new” keyword. The Java application. The JavaScript MQTT over websockets client code can either: Be downloaded from the Paho website, and put it on your local server/PC. This is an example to use Websocket to create a simple chat program. An example object would be a game piece and the reason it would be passed is because the game piece changed its position. The Java EE 7 Tutorial:Creating WebSocket Applications in the Java EE Platform | Java EE Documentation. This option marks the workspace as opted out, and no training data for that workspace will be used. Browser client in HTML and JavaScript. HTML5 WebSocket: A Quantum Leap in Scalability for the Web By Peter Lubbers & Frank Greco, Kaazing Corporation (This article has also been translated into Bulgarian. WebSocket Connect; WebSocket over TLS; WebSocket through SSH Tunnel; WebSocket Connect through HTTP Proxy; WebSocket Connect through SOCKS Proxy; Send and Receive WebSocket Frame; Send and Receive WebSocket Messages; Send a WebSocket Ping Control Frame; WebSocket Send/Receive Binary Data; Binary. mdb' and retrieve all the records from the table 'cars'. About Websocket Driver The websocket-driver gem decouples the websocket protocol from the I/O layer, providing drivers that handle the websocket procotol (handshakes, upgrades etc) on any compatible. In this guide we’ll dive in and use STOMP messaging with Spring to create an interactive web application. Java can be used to produce complete applications PS: Starting with Oracle 10g,. How to create HTTP Server in Java - ServerSocket Example Java has a very good networking support, allows you to write client server application by using TCP Sockets. A Java program that uses jPDFPrint to print a PDF document and adds a watermark on every page. Sql Create Schema. HTML5 WebSocket: A Quantum Leap in Scalability for the Web By Peter Lubbers & Frank Greco, Kaazing Corporation (This article has also been translated into Bulgarian. websocket? I want to connect to websocket (ws://socket. §WebSockets. Sep 22, 2017 • Written by David Åse Reading time: 0-0 min The source code for this tutorial can be found on GitHub. the WebSocket in a servlet Java with Tomcat. A PDF version is also available; HttpClient Examples - a set of examples demonstrating some of the more complex behavior. This new worker thread would process all the requests from this client in * the background, which allows the ServerSocket object to wait for and service * more connections. Sample app setup consists of the of following general steps: Creating a database to store data. Java and Regular Expressions. WebSocket Example. Types and classifications of Trigger. Other storage types must be explicitly defined: mysql. By passing {port: 8080} we bind it to the port 8080. Tableau has a user-friendly interface. In order to use it, you need to create a standard Java7 application, which defines an extension of the WebSocketServer class, instantiates it and starts in the main routine (or anywhere applicable). gz file and nothing else. I had Hadoop experience now for more than a year, thanks to a great series of Cloud Computing courses on Coursera. A simple example about creating DB2 SQL stored procedure to return multiple Result Set There are plenty of examples showing how to get multiple result sets in languages like Java or php. How to create HTTP Server in Java - ServerSocket Example Java has a very good networking support, allows you to write client server application by using TCP Sockets. Step 1: Creating the builder This is the easy part. pro files with the SAVE procedure. Xcopy command : syntax and examples. The Java application. Spring 4 has introduced the WebSocket API using which a browser and web server can communicate over WebSocket protocol. For more information see CREATE RULE. WebSocket makes it possible to open an interactive communication between a browser (front-end) and a server (back-end). 1 server, and IntelliJ IDEA 14. The package com. In this article, we're going to create a quick example using the new Spring Framework 5 WebSockets API along with reactive features provided by the Spring WebFlux Framework. The element specifies the use of the WebSocketModule module with ASP. cometd examples 36: cometd java 296: cometd javascript 68: cometd jetty 36: cometd jquery 3: cometd oort 36: cometd server 20: cometd session 5: cometd websocket 48: cometd 1: cometmanualapp 36: comm 9: command 25: commandline 8: commandrunner 2: commands 51: commandservice 6: common 64: common all 2: common annotation 2: common annotations 2: common api 9: common archetype 2: common axis 8: common axis2 2. In this tutorial, you create Java WebSocket Home, a smart home control web application based on Java EE 7. In this tutorial we will show how to create a WebSocket example using Apache Tomcat and Eclipse. The IDE support has been developed in close cooperation with the Java EE and GlassFish teams to provide the tightest integration and easiest possible use of the Java EE specification. All you have to do is call the WebSocket constructor and pass in the URL of your server. Creating a new generator will be an iterative task. WebSockets will be used when the NetHttpBinding determines the service contract defines a callback contract. I set up a websockets sample in its simplest form the other day. The underlying classes are implemented java. This Hello World demo is one of the simplest web applications you can create with Kurento. It makes it very suitable to use "subprotocols" to embed messages. Copying with in the same system You can use the scp command just like the cp command to copy files from one directory to another directory. In a previous post I explained the parameters that I used when connecting Oracle to SQL Server, now I have received another request from the developers, they need to access tables from another database in the same server. Configuration. Example # 1 clocks in at 32 lines of code, but this is because I used whitespace and comments to make the code as readable as possible. The first thing to realize about the protocol is that it is, in essence, a basic duplex TCP/IP socket connection. Control and create tasks on networked machines without having to login to them. When the server got a connection request, it add the name of the Client into a clientsList ( Here it is a Hashtable ) and create a new thread for communicate with the. The source for most of these examples is part of the standard Jetty project. com:1234), send message (add channel) and listen to messages. Further Reading. Disadvantage: Need to maintain another server. WebSockets allow for a two way connection between the client and the server and are a native part of the HTML5 standard.