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Engine.IO Java\n[![Build Status](https://travis-ci.org/socketio/engine.io-server-java.png?branch=master)](https://travis-ci.org/socketio/engine.io-server-java) [![codecov](https://codecov.io/gh/socketio/engine.io-server-java/branch/master/graph/badge.svg)](https://codecov.io/gh/socketio/engine.io-server-java)\n\nThis is the Engine.IO Server Library for Java ported from the [JavaScript server](https://github.com/socketio/engine.io).\n\n**NOTE** This library will follow the major version of the JS library starting with version 4.\n\nSee also: [Socket.IO-server Java](https://github.com/socketio/socket.io-server-java), [Engine.IO-client Java](https://github.com/socketio/engine.io-client-java)\n\n## Documentation\nComplete documentation can be found [here](https://socketio.github.io/engine.io-server-java/).\n\n## Installation\nIf you're looking for the socket.io library instead, please [see here](https://github.com/trinopoty/socket.io-server-java).\n\nThe latest artifact is available on Maven Central.\n\n### Maven\nAdd the following dependency to your `pom.xml`.\n\n```xml\n\u003cdependencies\u003e\n  \u003cdependency\u003e\n    \u003cgroupId\u003eio.socket\u003c/groupId\u003e\n    \u003cartifactId\u003eengine.io-server\u003c/artifactId\u003e\n    \u003cversion\u003e6.2.1\u003c/version\u003e\n  \u003c/dependency\u003e\n\u003c/dependencies\u003e\n```\n\n### Gradle\nAdd it as a gradle dependency in `build.gradle`.\n\n```groovy\nimplementation ('io.socket:engine.io-server:6.2.1')\n```\n\n#### Engine.IO Protocol 1.x suppport\n\nThe current version of engine.io-java does not support protocol 1.x.\n\n## Usage\nIf you're looking for the socket.io library instead, please [see here](https://github.com/trinopoty/socket.io-server-java).\n\nUsage is slightly different based on the server being used.\n\nCreate a servlet to handle the HTTP requests as follows:\n```java\npublic class EngineIoServlet extends HttpServlet {\n\n    private final EngineIoServer mEngineIoServer = new EngineIoServer();\n\n    @Override\n    protected void service(HttpServletRequest request, HttpServletResponse response) throws IOException {\n        mEngineIoServer.handleRequest(request, response);\n    }\n}\n```\n\nListen for new connections as follows:\n```java\nEngineIoServer server;  // server instance\nserver.on(\"connection\", new Emitter.Listener() {\n    @Override\n    public void call(Object... args) {\n        EngineIoSocket socket = (EngineIoSocket) args[0];\n        // Do something with socket like store it somewhere\n    }\n});\n```\n\nListen for raw packets received as follows:\n```java\nEngineIoSocket socket;  // socket received in \"connection\" event\n\nsocket.on(\"packet\", new Emitter.Listener() {\n    @Override\n    public void call(Object... args) {\n        Packet packet = (Packet) args[0];\n        // Do something with packet.\n    }\n});\n```\n\nListen for messages from the remote client as follows:\n```java\nEngineIoSocket socket;  // socket received in \"connection\" event\n\nsocket.on(\"message\", new Emitter.Listener() {\n    @Override\n    public void call(Object... args) {\n        Object message = args[0];\n        // message can be either String or byte[]\n        // Do something with message.\n    }\n});\n```\n\nSend a packet to client as follows:\n```java\nEngineIoSocket socket;  // socket received in \"connection\" event\n\nsocket.send(new Packet\u003c\u003e(Packet.MESSAGE, \"foo\"));\n```\n\n### WebSockets\nPlease see the complete documentation on handling WebSockets [here](https://socketio.github.io/engine.io-server-java/using.html#websocket-connections).\n\n## Features\nThis library supports all of the features the JS server does, including events, options and upgrading transport.\n\n## License\n\nApache 2.0\n","funding_links":[],"categories":[],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fsocketio%2Fengine.io-server-java","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fsocketio%2Fengine.io-server-java","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fsocketio%2Fengine.io-server-java/lists"}