ip-lookup 0.1.1

A unified IP geolocation query library using multiple free public providers.
Documentation 
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/* src/ip.rs */

use rand::seq::SliceRandom;
use std::time::Duration;

pub fn get_public_ip_addr() -> Option<String> {
    let sources = vec![
        ("https://icanhazip.com/", false), // plain text
        ("https://api.ip.sb/ip", false), // plain text
        ("https://api.ipsimple.org/ipv4?format=json", true), // json {"ip": ...}
        ("https://api.ipify.org/?format=json", true), // json {"ip": ...}
    ];

    let client = reqwest::blocking::Client::builder()
        .timeout(Duration::from_secs(3))
        .build()
        .unwrap();

    let mut rng = rand::thread_rng();
    let mut shuffled = sources.clone();
    shuffled.shuffle(&mut rng);

    for (url, is_json) in shuffled {
        if let Ok(resp) = client.get(url).send() {
            if is_json {
                if let Ok(json) = resp.json::<serde_json::Value>() {
                    if let Some(ip) = json.get("ip").and_then(|v| v.as_str()) {
                        return Some(ip.to_string());
                    }
                }
            } else if let Ok(text) = resp.text() {
                let ip = text.trim().to_string();
                if !ip.is_empty() {
                    return Some(ip);
                }
            }
        }
    }

    None
}