Method reject

java/lib/src/main/java/io/github/ccxt/ws/WsClient.java:210–229

Reject a specific future, or all futures if messageHash is null.

(Object error, Object messageHash2)

     * Reject a specific future, or all futures if messageHash is null.
     */
    public void reject(Object error, Object messageHash2) {
        if (messageHash2 != null) {
            String messageHash = messageHash2.toString();
            Future f = futuresMap().remove(messageHash);
            if (f != null) {
                f.reject(error);
            } else {
                rejectionsMap().put(messageHash, error);
            }
        } else {
            // Reject all pending futures — snapshot keys to avoid ConcurrentModificationException.
            var snapshot = new java.util.ArrayList<>(futuresMap().keySet());
            for (String key : snapshot) {
                Future f = futuresMap().remove(key);
                if (f != null) {
                    f.reject(error);
                }
            }
        }
    }

    public void reject(Object error) {
        reject(error, (Object) null);