Network Probe

Description

network-analyzer is a utility that displays various system and network information when executed without arguments.

Functionality

• Amount of free and used memory.
• Total number of running processes.
• Time to resolve google.com to an IP (in microseconds).
• ICMP round trip time to google.com (in microseconds).
• Time to establish a TCP connection to google.com, port 443 (in microseconds) and name of the ethernet interface where the TCP connection was established.

usage

./network-analyzer

Sample Output

./network-analyzer
System Info:
       Free Memory: 35235348 KB
        Used Memory: 492759052 KB
        Number of running processes: 562353898

Network performance info of google.com :
        Time to resolve google.com : 76105 µs
        ICMP Round trip time to  google.com : 8969 µs
        Time to establish a TCP connection to  google.com : 2 µs, using interface: eno1

Build Instructions

CMake Configuration

The project is configured using CMake. Below is the CMakeLists.txt file used for this project:

cmake_minimum_required(VERSION 3.10)
project(network-analyzer)

set(CMAKE_CXX_STANDARD 11)

add_executable(network-analyzer source/main.cpp source/SystemInfo.cpp source/NetworkInfo.cpp)

Prerequisites

• CMake 3.10 or later
• A C++11 compatible compiler
• Operating System : Linux

Build Steps

mkdir build
cd build
cmake ..
make

Classes Overview

This repository contains two classes, NetworkInfo and SystemInfo, designed to gather network and system-related information. The NetworkInfo class provides methods to measure various network metrics for a given hostname, while the SystemInfo class provides static methods to retrieve system information.

NetworkInfo

The NetworkInfo class is designed to measure network-related metrics for a specified hostname. If no hostname is provided, it defaults to "google.com".

Methods

Constructors:

• NetworkInfo(): Initializes the NetworkInfo object with the default hostname (google.com).
• NetworkInfo(string hostName): Initializes the NetworkInfo object with the specified hostname.

Destructor:

• ~NetworkInfo(): Destructor for the NetworkInfo object.

Accessors:

• const string& getHostName() const: Returns the current hostname.

Network Metrics:

• long timeToResolveHostname(): Measures the time taken to resolve the hostname to an IP address.
• long icmpRoundTripTime(): Measures the round-trip time for ICMP (ping) packets to the hostname.
• pair<long, string> tcpConnectTime(int port): Measures the time taken to establish a TCP connection to the specified port on the hostname and returns a pair containing the time taken and the interface name.

SystemInfo

The SystemInfo class provides static methods to retrieve various system-related metrics.

Static Methods

• static unsigned long getFreeMemory(): Returns the amount of free memory available on the system from /proc/meminfo file.
• static unsigned long getUsedMemory(): Returns the amount of used memory on the system from /proc/meminfo file.
• static int getRunningProcesses(): Returns the number of currently running processes on the system from /proc/stat file.

Future Improvements:

General Improvements

• Cross-Platform Compatibility: Enhance compatibility with different operating systems, including Windows, macOS, and various Linux distributions.
• Unit Testing: Add a comprehensive set of unit tests to ensure the correctness and reliability of the codebase.

NetworkInfo Class

• Support for More Protocols: Extend the NetworkInfo class to support additional network protocols.
• DNS Query Details: Provide detailed DNS query information, including query types (A, AAAA, CNAME, etc.) and response records.
• Traceroute Functionality: Implement traceroute functionality to map the route packets take to the destination hostname.
• Network Interface Metrics: Provide detailed information about network interfaces, including bandwidth usage, packet counts, and errors.

SystemInfo Class

• Additional System Details : Add methods to retrieve CPU usage metrics, Disk Usage Metrics, Uptime, etc.