Todo.md

Campus Name Server:

Project Division:

• DB. Implementation

  • from_file()
  • fetch_key(Name)

• Python Implementation

  • Config File

  • Classes:

    • CNS-Server
    • CNS-Message
    • Header
    • Query
    • Answer

  • CNS-Server:

    • run()
    • init(config)

  • CNS-Message:

    • encode() -> byte String
    • decode() byte String -> Message
    • build_query_msg()
    • build_answer_msg()
    • add_header()
    • get_header()
    • get_queries -> List(query)
    • get_answers -> List(answer)

  • Header:

    • init()
    • copy()

  • Query:

    • encode()
    • decode()
    • make_query()
    • resolve_query()
    • if_cache()

  • Answer:

    • encode()
    • decode()
    • Fields
    • get_answer(Name,Fields) -> Answer

Project Desc.

• Protocol Design:

  • Port Number, Record Structure <- from config file.
  • Header Strcuture
  • Query & Answer Strcuture

• Header Structure:

  • Id (8 bit)
  • Status (4 bit)
    • 1st bit - whether Answer or Query
    • 2nd bit - Format - Ok or Ill-Formed
    • 3rd and 4th bit for futute expansion
  • No of queries (1-16) (4 bits)
  • Copy from request to response

• Query Structure:

  • 1 Cache bit
  • which Records (7 bit) (using only 2 but can easily expand)
  • Name: String (variable size)
  • Terminated by \n

• Answer Structure:

  • Status Codes:
    • Name not Found
    • Ok
  • 1 Cache bit
  • which Records (7 bit) (using only 2 but can easily expand)
  • Each record terminated by \n
  • Each answer terminated by \r

Think About it thorougly

• Record Structure:

  • Can have max of 7 fields
  • from a Config file (SQL)
  • and make the protocol generic over records

• Server Implementation:

  • Make the server client in C++/python
  • Decide between DB or File
  • Record Structure

• Client Implementation:

  • Make libraries in atleast 3 languages
    • C++
    • Python
    • Rust ( Daksh )
    • Java ( Maybe )
  • Use these libraries to make examples

There is enough work to divide easily so no problem this time.