Host_receiveMail.java

private void recieveMailFromClientAndDeliverToEnclave(Socket clientSocket, String routingHint){
    try {
        DataInputStream input = new DataInputStream(clientSocket.getInputStream());
        byte[] mailBytes = new byte[input.readInt()];
        input.readFully(mailBytes);

        enclaveHost.deliverMail(1, mailBytes, routingHint);
    }catch (IOException ioException){
        ioException.printStackTrace();
    }
}