public boolean validate() {
        if (isClosed()) {
            return false;
        }
        boolean allowedToWrite = false;
        try {
            requestWriting();
            allowedToWrite = true;
            // Register that we started sending data on the connection
            writeStarted();
            writer.write(" ");
            writer.flush();
        }
        catch (Exception e) {
            Log.warn("Closing no longer valid connection" + "\n" + this, e);
            close(new StreamError(StreamError.Condition.internal_server_error, "An error occurred while trying to validate this connection."), true);
        }
        finally {
            // Register that we finished sending data on the connection
            writeFinished();
            if (allowedToWrite) {
                releaseWriting();
            }
        }
        return !isClosed();
    }
Returns the stream handler responsible for encrypting the plain connection and providing
the corresponding input and output streams.

@return the stream handler responsible for encrypting the plain connection and providing
        the corresponding input and output streams.
xmppserver/src/main/java/org/jivesoftware/openfire/net/SocketConnection.java