C#

Begin Read
    Issue asynchronous read
    if Read completes synchronously, directly call Read Completion function

Read Complete Function
    call EndRead to determine number of bytes read
    write receive buffer to my stream
    process stream
    call Begin Read to issue another read

class Program
    {
        private const string DOMAIN = "foobar.com";
        private const string SMTPHOST = "mail." + DOMAIN;
        private const string FROM = "chadwick.posey@" + DOMAIN;
        private const string TO = FROM;

        static void Main(string[] args)
        {
            MailMessage msg = new MailMessage(FROM, TO, "Subject", "Body");
            
            string path = Path.GetTempPath();
            string name = "AAAAAA_AAAAAAAAAAAA_AAAAAAA_AAAA - IIIIIII CCCCCCCCCC DD IIIIIIÁIIII_20111018_091327.pptx";
            
            File.WriteAllText(path + "\\" + name, "blah");
            Attachment att = new Attachment(path + "\\" + name, new ContentType("application/vnd.openxmlformats-officedocument.presentationml.presentation"));

            msg.Attachments.Add(att);

            SmtpClient client = new SmtpClient(SMTPHOST, 25);
            client.Send(msg);
        }
    }