A Simple DNS System

A Simple DNS System -- Coursework of Internet Applications 2020

Environment

• Operating system: Linux
• Physical machine: Ubuntu 14.04.5
• Compiler: gcc version 4.8.4
• Tool of capturing packets: Wireshark
• Programing language: C language
• Header files: <stdio.h><sys/types.h><string.h><unistd.h><netinet/in.h><sys/socket.h><unistd.h><stdlib.h><netinet/in.h><arpa/inet.h><stdint.h>

Developers

Yuxuan WU & Ziyi YANG

Functions

• A/MX/CNAME -- three DNS query types
• Iteration Query in two-level DNS Servers
• Print the trace record of local server and the query report to client