Bug Fixes

• ensure randomizationFactor is always between 0 and 1 (0cbf01e)
• prevent socket from reconnecting after middleware failure (95ecf22)
• increase the readTimeout value of the default OkHttpClient (fb531fa) (from engine.io-client)

Features

• emit with timeout (fca3b95)

This feature allows to send a packet and expect an acknowledgement from the server within the given delay.

Syntax:

socket.emit("hello", "world", new AckWithTimeout(5000) {
    @Override
    public void onTimeout() {
        // ...
    }

    @Override
    public void onSuccess(Object... args) {
        // ...
    }
});

• implement catch-all listeners (c7d50b8)

Syntax:

socket.onAnyIncoming(new Emitter.Listener() {
    @Override
    public void call(Object... args) {
        // ...
    }
});

socket.onAnyOutgoing(new Emitter.Listener() {
    @Override
    public void call(Object... args) {
        // ...
    }
});

Bug Fixes

• fix usage with ws:// scheme (67fd5f3)
• ensure buffered events are sent in order (4885e7d)
• ensure the payload format is valid (e8ffe9d)
• emit a CONNECT_ERROR event upon connection failure (d324e7f)

Features

• add options builder (#304) (49068d3)
• add support for Socket.IO v3 (79cb27f), closes /github.com/socketio/socket.io-protocol#difference-between-v5-and-v4

Bug Fixes

• don’t process socket.connect() if we are already re-connecting (#577) (54b7311)
• handle case where URI.getHost() returns null (#484) (567372e)