&& (tc.getConfig().getSessionLimit() == 0 || conn.getNumSessions() < tc.getConfig().getSessionLimit())) {
                try {
                    if (conn.isFailed() || connectedOnly && conn.isDisconnected()) {
                        continue;
                    }

                    if (forceSigning && !conn.isSigningEnforced()) {

        return !this.transport.isDisconnected() && this.connectionState.get() == 2;
    }

    /**
     * @return whether the session has been lost
     */
    public boolean isFailed() {
        return this.transport.isFailed();
    }

    /**
     * @return whether encryption is enabled for this session
     */
    public boolean isEncryptionEnabled() {
        return this.encryptionContext != null;

    }

    /**
     * Checks if the transport is in a failed state.
     *
     * @return whether the transport is marked failed
     */
    public boolean isFailed() {
        return this.state == 5 || this.state == 6;
    }

    /**
     * Send a request message and recieve response
     *
     * @param <T> the response type