netcheck v1.2.0 - Network Diagnostics Features

Network Connectivity Checker v1.2.0

A major feature release adding comprehensive network diagnostics capabilities to netcheck.

🆕 What's New

Network Interface Display (--my-ip, -ip)

Display all your network interfaces with detailed information:

• IPv4/IPv6 addresses for each interface
• Interface status (UP/DOWN)
• Default gateway and public IP
• Smart filtering: Shows only active (UP) interfaces by default
• Use --my-ip --all to see all interfaces including inactive ones
• Clean sorted output with filtered loopback and virtual ethernet

Example:

netcheck --my-ip

HTTP Status Checking (-s, --status)

Check HTTP/HTTPS endpoints with detailed diagnostics:

• Response codes with descriptive messages (200 OK, 404 Not Found, etc.)
• Response time in milliseconds
• Content size in human-readable format
• Status categorization (success, redirect, client error, server error)
• Verbose mode shows response headers
• Comprehensive error messages

Example:

netcheck -s https://google.com
netcheck -s https://api.example.com -V  # with headers

SSL Certificate Validation (--cert)

Monitor SSL/TLS certificate expiration and validity:

• Certificate subject, issuer, and validity dates
• Days until expiry calculation
• ⚠️ Warnings for certificates expiring within 30 days
• 🚨 Critical alerts for certificates expiring within 7 days
• Verbose mode shows Subject Alternative Names (SANs)
• Supports URL or hostname:port format

Example:

netcheck --cert google.com
netcheck --cert https://github.com -V  # with SANs

Retry Logic (--retry, --retry-delay)

Automatically retry failed connections for more reliable testing:

• Configurable retry count (--retry N)
• Configurable delay between retries (--retry-delay seconds)
• Works in both file mode and quick mode
• Verbose mode shows retry attempts
• Perfect for intermittent connection issues

Example:

netcheck --retry 3 --retry-delay 2 hosts.txt
netcheck -q 192.168.1.1 80 --retry 5

📋 Full Changelog

Added

• Network Interface Display (--my-ip, -ip)

  • Show all network interfaces with IPv4/IPv6 addresses
  • Display interface status (UP/DOWN), gateway, and public IP
  • Default shows only active (UP) interfaces
  • --my-ip --all flag shows all interfaces including inactive ones
  • Sorted output with filtered loopback and virtual ethernet pairs

• HTTP Status Checking (-s, --status)

  • Check HTTP/HTTPS response codes with curl
  • Display response time in milliseconds
  • Show content size in human-readable format (bytes, KB, MB)
  • Categorize status codes (2xx success, 3xx redirect, 4xx client error, 5xx server error)
  • Verbose mode shows response headers
  • Comprehensive error messages for connection failures

• SSL Certificate Validation (--cert)

  • Check SSL/TLS certificate validity and expiration
  • Display certificate subject, issuer, and validity dates
  • Calculate days until expiry
  • Warn if certificate expires within 30 days (yellow) or 7 days (red)
  • Verbose mode shows Subject Alternative Names (SANs)
  • Support for URL or hostname:port format

• Retry Logic (--retry, --retry-delay)

  • Retry failed connections with configurable count (default: 1, no retry)
  • Configurable delay between retries in seconds (default: 1)
  • Works with both file mode and quick mode
  • Verbose mode shows retry attempts
  • Helps with intermittent connection issues

Changed

• Updated help text with all new flags and options
• Improved error messages and user guidance
• Enhanced documentation with v1.2.0 examples

Dependencies

• Added curl for HTTP status checks
• Added openssl for SSL certificate validation
• Added bc for time calculations
• Added iproute2 for network interface display

📦 Installation

Snap (Recommended - All Linux Distributions)

sudo snap install netcheck
sudo snap connect netcheck:network-observe  # For ping functionality

DEB Package (Ubuntu/Debian)

Download netcheck_1.2.0.deb from the assets below and install:

sudo dpkg -i netcheck_1.2.0.deb

From Source

git clone https://github.com/farman20ali/network_access_check.git
cd network_access_check
sudo make install

📖 Documentation

• README.md - Full documentation
• EXAMPLES.md - Comprehensive examples
• CHANGELOG.md - Complete version history

🔗 Links

• Snap Store: https://snapcraft.io/netcheck
• GitHub: https://github.com/farman20ali/network_access_check
• Issues: https://github.com/farman20ali/network_access_check/issues

💡 Quick Examples

# Check your network interfaces
netcheck --my-ip

# Check website status
netcheck -s https://google.com

# Check SSL certificate expiry
netcheck --cert github.com

# Retry failed connections
netcheck --retry 3 hosts.txt

# Combined diagnostics
netcheck --my-ip && netcheck -p 8.8.8.8 && netcheck -s https://api.example.com