jws45

simple java websocket client. needs documentation. needs testing. not recommended for production use, this is a personal project.

Features:

• non-blocking model based on java.nio
• tls/ssl support using javax.ssl.SSLEngine
• no third-party dependencies
• (mostly) rfc 6455 compliant

Goals:

This library was intended to make a client for the Discord chat system. I'm still working on this and it might take a while so I've decided to share the websocket part now - when the rest of the Discord stuff is done this will become part of that project instead.

Simple usage example: it prints binary messages received to console in hex and echoes back text messages:

client = new WebSocketClient("wss://localhost:9999/") {
    @Override
    public void onTextReceived(String text) {
        System.out.println("Received a text message: " + text);
        getConnection().sendText(text);
    }

    @Override
    public void onBinaryReceived(ByteBuffer binary) {
        System.out.print("Receved a binary message: ");
        while(binary.hasRemaining()) {
            System.out.printf("%2x ", binary.get());
        }

        System.out.println();
    }

    @Override
    public void onDisconnected(ConnectionCloseInfo info) {
        System.out.println("Disconnected: " + info.getStatusCode());
    }
};

client.pollForever();