DoH Advanced Routing - nginx load balancing and geo-based provider selection

doh-geo-selector.py

#!/usr/bin/env python3
# DoH Provider Selection Based on Geographic Location

def select_doh_provider(client_ip):
    """Select optimal DoH provider based on location"""
    # Simplified geo-detection
    if client_ip.startswith('192.168.'):
        return "https://local-doh.home.arpa/dns-query"
    elif is_asian_ip(client_ip):
        return "https://dns.google/dns-query"  # Better in Asia
    else:
        return "https://cloudflare-dns.com/dns-query"  # Global default

doh-load-balancing.conf

# nginx DoH Load Balancing Configuration

upstream doh_providers {
    server 1.1.1.1:443 weight=3;
    server dns.google:443 weight=2;
    server dns.quad9.net:443 weight=1;
    keepalive 32;
}