Gottox/socket.io-java-client · GitHub

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Socket.IO-Client for Java
socket.io-java-client is an easy to use implementation of socket.io for Java.
It uses Weberknecht as transport backend, but it's easy to write your own transport. See description below. An XHR-Transport is included, too. But it's not functional in its current state.
The API is inspired by java-socket.io.client.
Features:

transparent reconnecting - The API cares about re-establishing the connection to the server when the transport is interrupted.

easy to use API - implement an interface, instantiate a class - you're done.

output buffer - send data while the transport is still connecting. No problem, socket.io-java-client handles that.

meaningful exceptions - If something goes wrong, SocketIO tries to throw meaningful exceptions with hints for fixing.

Status: Connecting with Websocket is production ready. XHR is in beta.
How to use
Using socket.io-java-client is quite simple. But lets see:
Checkout and compile the project:


git clone git://github.com/Gottox/socket.io-java-client.git
cd socket.io-java-client
ant jar
mv jar/socketio.jar /path/to/your/libs/project

If you're using ant, change your build.xml to include socketio.jar. If you're eclipse, add the jar to your project buildpath.
Afterwards, you'll be able to use this library:


        SocketIO socket = new SocketIO("http://127.0.0.1:3001/");
        socket.connect(new IOCallback() {
            @Override
            public void onMessage(JSONObject json, IOAcknowledge ack) {
                try {
                    System.out.println("Server said:" + json.toString(2));
                } catch (JSONException e) {
                    e.printStackTrace();
                }
            }

            @Override
            public void onMessage(String data, IOAcknowledge ack) {
                System.out.println("Server said: " + data);
            }

            @Override
            public void onError(SocketIOException socketIOException) {
                System.out.println("an Error occured");
                socketIOException.printStackTrace();
            }

            @Override
            public void onDisconnect() {
                System.out.println("Connection terminated.");
            }

            @Override
            public void onConnect() {
                System.out.println("Connection established");
            }

            @Override
            public void on(String event, IOAcknowledge ack, Object... args) {
                System.out.println("Server triggered event '" + event + "'");
            }
        });

        // This line is cached until the connection is establisched.
        socket.send("Hello Server!");

For further informations, read the Javadoc.

Class SocketIO

Interface IOCallback

Checkout

with git

git clone git://github.com/Gottox/socket.io-java-client.git

with mercurial

hg clone https://bitbucket.org/Gottox/socket.io-java-client

Both repositories are synchronized and up to date.
Building
to build a jar-file:

cd $PATH_TO_SOCKETIO_JAVA ant jar ls jar/socketio.jar

You'll find the socket.io-jar in jar/socketio.jar
Bugs
Please report any bugs feature requests to the Github issue tracker
Frameworks
This Library was designed with portability in mind.

Android is fully supported.

JRE is fully supported.

GWT does not work at the moment, but a port would be possible.

Java ME does not work at the moment, but a port would be possible.

... is there anything else out there?

Testing
There comes a JUnit test suite with socket.io-java-client. Currently it's tested with Eclipse.
You need node installed in PATH.

open the project with eclipse

open tests/io.socket/AllTests.java

run it as JUnit4 test.

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