1 / 7

Programming Assignment #1

Programming Assignment #1. Simulate a DNS server using TCP By utilizing Sockets!. Readings: Chapter 2: Sections 2.7 Project I Description. What should we do?. Implement a typical Client/Server model. Client gets input from user, and sends it to server.

illias
Download Presentation

Programming Assignment #1

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Programming Assignment #1 • Simulate a DNS server using TCP • By utilizing Sockets! Readings: Chapter 2: Sections 2.7 Project I Description CSci4211: Programming Assignment #1

  2. What should we do? • Implement a typical Client/Server model. • Client gets input from user, and sends it to server. • The source codes of clients have been provided. • Server gets input from clients, and send DNS results back to clients. • This is what you need to code! • They communicate through sockets. CSci4211: Programming Assignment #1

  3. How do servers work? • Get DNS queries from clients. • Check if the query has been locally cached. • If so, fetch the IP address from cache. • Otherwise, go to the root DNS server to look up. (RootServer.class) • One server can handle multiple clients. • Refer to the “Concurrent Server” in the slides “Socket Programming”. CSci4211: Programming Assignment #1

  4. How does cache work? • Initially, the cache should be empty. • If client’s query is not in the cache… • Look it up in root DNS • Send the result back client. • Add an entry in cache. • If client’s query is already in the cache… • Just return it! CSci4211: Programming Assignment #1

  5. Things you may need to work on… • Socket Programming • File Operation • String Operation CSci4211: Programming Assignment #1

  6. Things you may need to notice… • Python 2 vs Python 3 • Details about the cache. • Please read the project description carefully. • Start early! • Let me know if you have any questions anytime. • Make your code east to read. • I always get mad when facing something in a mess! CSci4211: Programming Assignment #1

  7. Q&A CSci4211: Programming Assignment #1

More Related