Notes for filtering IPVanish servers

README.md

Server list at https://www.ipvanish.com/api/servers.geojson

No CORS. Copy the JavaScript functions below into the console and confirm. Copy all the (JSON) output in the browser window into the console, into a variable named e.g. everything. Copy the final line, then play arround with the all array.

filter.js

var sortCountriesByCode = function(a, b) {
    return a.countryCode.localeCompare(b.countryCode);
};
var unpackProperties = function(properties) {
    return {
        countryCode: properties.countryCode,
        country: properties.country,
        city: properties.city,
        capacity: properties.capacity,
        continent: properties.continent,
        continentCode: properties.continentCode,
        hostname: properties.hostname,
        ip: properties.ip,
        online: properties.online,
        title: properties.title,
    };
};
var unpackEntry = function(acc, item) {
    acc.push(unpackProperties(item.properties));
    return acc;
};

var everything = JSON.parse(document.body.textContent);
var all = everything.reduce(unpackEntry, []).sort(sortCountriesByCode);

var byCountryCode = function(code) {
    return function(item) {
        return item.countryCode === code;
    };
}
var inSweden = byCountryCode('SE');

all.filter(inSweden);