Lec3-CaseStudy-Spr04 - Design Case Study: Email Protocol...

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Design Case Study: Email Protocol COP 3330 © Dr. David A. Workman School of Computer Science January 2004
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Spring 2004 (c) Dr. David A. Workman 2 Reference Specification Document for the SMTP: http://www.freesoft.org/CIE/RFC/821/index.htm
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Spring 2004 (c) Dr. David A. Workman 3 Application: Email Client Program Description: The program we shall develop is an email client, that is, it is a simple program that is designed to send an email message using the operating system’s SMTP (Simple Mail Transfer Protocol) server. The diagram below depicts the problem scenario. Client Host Server Host TCP/IP Client Application Program This is the most general scenario: client and server host computers are different. Client and Server are connected via the Internet. Each Host has an IP (Internet Protocol) address (e.g. 192.555.333.18) and a name (longwood.cs.ucf.edu). The Hosts always uses port 25 to accept email messages. A “port” is a software interface point that accepts and
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Lec3-CaseStudy-Spr04 - Design Case Study: Email Protocol...

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