香港六合彩-六合彩 » SlideShare

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给张平一个胶卷盒子,提着箱子就要走人.箱子真沉呐,要换到以前我肯定赖着不提,但现在提的可是好几万呐,累就累点吧,先苦后甜嘛!
一边想一边往门外走,到门口时看见了李雪,我朝香港六合彩点头微笑,说,张平在里头!
李雪抱着一沓照片走进去,那是我花了好几十块钱冲洗出来无偿提供给香港六合彩的呢,然后我就听到一沓什么东西甩到一个人的脸上那种啪的声响,后面的情况我就不清楚了.
我三步并两步,两步并一步,身子跟飞似的往前冲,生怕腿脚慢了后边就杀过来一个人似的,张平那小子这下可就人财两空咯,也该知道啥叫痛苦了吧!说不害怕怎能真的不害怕呢,手中可是真真切切的五百张大票子,一旦有啥闪失,小命无所谓,我和小花的幸福就玩完了.
我没命的开始甩开步子跑,小花说让我和香港六合彩一起回老家找个依山傍水的地方生活,我没赞同也没反对,现在提着这么个大箱子我觉得香港六合彩的话有道理,还是找一乡下地方先过上几年.我跟小花说以前别人欠我一些钱,加上我这几个月的工资,今晚拿到钱就一起连夜回六安,把陈大壮钱还上

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香港六合彩-六合彩 » SlideShare

  1. 1. E-mail & lists client view Anne Villems University of Tartu, Estonia
  2. 2. Everybody has used e-mail! <ul><li>But how many have read documents, which set the standards for e-mail? </li></ul><ul><li>These standards have been set up in the documents: </li></ul><ul><li>RFC 822 / RFC 821 </li></ul><ul><li>MIME standards set in </li></ul><ul><li>RFC 2045/2046/2047/2048 </li></ul><ul><li>(old verson RFC 1521/1522) </li></ul>
  3. 3. Mail Standard RFC822 <ul><li>Published in 1982 </li></ul><ul><li>Lines no longer than 1000 char </li></ul><ul><li>Message body - plain US-ASCII text </li></ul><ul><li>Message header lines - plain US-ASCII text </li></ul><ul><li>Limit on message length </li></ul>
  4. 4. RFC 822 restrictions <ul><li>no multiple objects in a single message </li></ul><ul><li>no multi-part message bodies </li></ul><ul><li>no non-textual bodies </li></ul><ul><li>no X.400 messages can be gatewayd </li></ul><ul><li>no multifont messages </li></ul>
  5. 5. ASCII times are over! <ul><li>Now we want: </li></ul><ul><li>National language support </li></ul><ul><li>Possibility to send </li></ul><ul><ul><li>pictures </li></ul></ul><ul><ul><li>audiofiles </li></ul></ul><ul><ul><li>other applications </li></ul></ul><ul><ul><li>video files </li></ul></ul><ul><ul><li>multimedia applications </li></ul></ul>
  6. 6. MIME - Multipurpose Internet Mail Extension <ul><li>RFC 2045-2048 obsolete RFC 1521, 1522,1590 </li></ul><ul><li>RFC 2045 Format of Internet Message Bodies </li></ul><ul><li>RFC 2046 Media Types </li></ul><ul><li>RFC 2047 Message Header Extension for Non-ASCII Text </li></ul><ul><li>RFC 2048 Registration Procedures </li></ul><ul><li>To solve RFC822 restrictions without serious incompatibilities with it </li></ul>
  7. 7. MIME defines new header lines <ul><li>MIME-Version header field: </li></ul><ul><li>MIME-Version: 1.0 </li></ul><ul><li>The content type header field to specify the the type and subtype of data in the body: </li></ul><ul><li>Content-Type: Text/Plain: Charset=ISO-8859-1 </li></ul><ul><li>Content-Transfer-Encoding field to show how data is encoded </li></ul><ul><li>Content-Transfer-Encoding: QUOTED-PRINTABLE </li></ul><ul><li>Content-ID and Content-Description for future use </li></ul>
  8. 8. “Content type” possible values <ul><li>Text - textual information </li></ul><ul><li>Image - for transmitting still images (gif,jpeg) </li></ul><ul><li>Audio - requires audio output device </li></ul><ul><li>Video - to display moving images, like mpeg </li></ul><ul><li>Application - information to be processed by application program </li></ul><ul><li>Multipart - to represent compound, possibly embedded parts </li></ul><ul><li>Message - an encapsulated message </li></ul>
  9. 9. Content-transfer-Encoding <ul><li>base64 - every 3 bytes are represented with 4 7-bit ASCII characters </li></ul><ul><li>quoted-printable - will code only non-ASCII characters in the text, 76char lines </li></ul><ul><li>7bit - no coding, already 7bit </li></ul><ul><li>8bit - have to be transported as 8-bit </li></ul><ul><li>binary - as 8bit, but may contain long lines </li></ul>
  10. 10. Quoted-printable <ul><li>Suitable to present most European languages which are based on ISO 8859-x standard </li></ul><ul><li>Non-ASCII chars will be coded with 3 chars: ´=´ followed by code in base (16) Examples: </li></ul><ul><li>Ü =DC ä =E4 ö =F6 </li></ul>
  11. 11. Where to get more info about MIME <ul><li>RFC archive with all RFC-s in plain text: </li></ul><ul><li>ftp://ftp.carnet.hr/pub/Internet/rfc/ </li></ul><ul><li>Mark Grand’s “MIME Overview” </li></ul><ul><li>http://www.mindspring.com/~mgrand/mime.html </li></ul><ul><li>comp.mail.mime FAQ </li></ul><ul><li>http://www.cis.ohio-state.edu/text/faq/ usent/mail/mime-faq/ </li></ul>
  12. 12. How e-mail works <ul><li>User Agent (UA) - program, with which human users read, create and manage e-mail </li></ul><ul><li>Mail Transport Agent (MTA) - handling the movement of messages among computers, non-real-time manner; SMTP - Simple Mail Transfer Protocol - must be installed at every Internet Host </li></ul>
  13. 13. Working protocols <ul><li>SMTP - primary mechanism for moving mail around TCP/IP network, handles sites with permanent connections </li></ul><ul><li>SMTP delivers mail, not allows user to collect it - sometimes the latter is more convenient </li></ul><ul><li>POP, IMAP - fill the gap, they are oriented to serve users when they want </li></ul>
  14. 14. POP, IMAP <ul><li>Aim - to build a distributed e-mail infrastructure </li></ul><ul><li>LAN oriented, vendor specific </li></ul><ul><li>POP - Post Office Protocol, latest version POP3, RFC 1725 (1460) </li></ul><ul><li>IMAP - the Internet Message Access Protocol, latest version IMAP4, RFC2060 (1731) </li></ul>
  15. 15. What we want from Mail client? <ul><li>Good user interface </li></ul><ul><li>advanced text editing </li></ul><ul><li>spelling checker </li></ul><ul><li>attachments allowed </li></ul><ul><li>addressbook (with groups!) </li></ul><ul><li>MIME </li></ul><ul><li>uudencode/decode </li></ul><ul><li>Encryption! </li></ul><ul><li>+ mailing lists </li></ul><ul><li>pager support </li></ul><ul><li>multiple accounts </li></ul><ul><li>multilingual support </li></ul><ul><li>full text indexing + search </li></ul><ul><li>message filtering </li></ul><ul><li> … and more </li></ul>
  16. 16. …more requirements for mail client: <ul><li>signatures (multiple?) </li></ul><ul><li>database </li></ul><ul><li>sophisticated send: </li></ul><ul><li>send e-mail to all my students who live in Liberty street </li></ul><ul><li>download headers and delete mail from server based on header info </li></ul><ul><li>UseNet Newsgroups </li></ul><ul><li>Live spelling </li></ul><ul><li>Thesaurus </li></ul><ul><li>auto-dialing </li></ul><ul><li>Free Internet Fax </li></ul><ul><li>Confirmation ability </li></ul><ul><li>… </li></ul><ul><li>… </li></ul>
  17. 17. Mail Clients <ul><li>You can find 28 mail clients in Tucows ultimate software collection for Win95, 13 for Mac and 11 for win 3.x </li></ul><ul><li>They need from 65K to 4.5M memory </li></ul><ul><li>Tocows has mirrors in many countries </li></ul><ul><li>one in Croatia: </li></ul><ul><li>http://www.hrt.hr/tucows/ </li></ul>
  18. 18. Most popular clients <ul><li>The Pegasus Mail, no fee, version 2.54 </li></ul><ul><li>http://www.pegasus.usa.com/ </li></ul><ul><li>FAQ http://www.let.nl/pegasus/faq.html </li></ul><ul><li>Eudora (Qualcomm Inc.) </li></ul><ul><ul><li>Eudora Pro 3.0.3 </li></ul></ul><ul><ul><li>Eudora Light 3.0.3 </li></ul></ul><ul><li>http://www.qualcomm.com/ </li></ul>
  19. 19. Problems going from Eudora to Pegasus <ul><li>Your Adressbooks are not convertible. </li></ul><ul><li>There exists Interguru Web-site to help you to convert Eudora nickname file to Pegasus address file: </li></ul><ul><li>http://www.interguru.com/eudopega.htm </li></ul>
  20. 20. To compare Mail Clients <ul><li>Stroud’s Mail Client Reviews with about 20 packages reviewed: </li></ul><ul><li>http://cws.internet.com/32mail-reviews.html </li></ul><ul><li>Intervue Internet Client reviews: </li></ul><ul><li>http://www.eqp.com/egrinter.html </li></ul><ul><li>Tucows has evaluated all packages with 0.5 - 5 cows. </li></ul>
  21. 21. Some words about Netiquette <ul><li>Be polite! </li></ul><ul><li>Cite as small part of the letter as possible! </li></ul><ul><li>DO NOT USE UPPER CASE LETTERS THROUGHOUT THE LETTER </li></ul><ul><li>Use “smilies”: :-) :-( ;-) </li></ul><ul><li>Take differencies in the culture into account. </li></ul>
  22. 22. Questions <ul><li>??? </li></ul><ul><li>??? </li></ul><ul><li>??? </li></ul>

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