routescan.js

const exec = require('child_process').exec;
const request = require('request');

function loadRouteList() {
        return new Promise(function (resolve, reject) {
                request("http://f.ip.cn/rt/isproutes-ct.txt", function (e, res, body) {
                        if (e) {
                                reject(e);
                                return;
                        }

                        resolve(body.split('\n').filter((x) => x.indexOf('#') < 0));
                });
        });
}

function execMtrAndMatch(ip) {
        return new Promise(function (resolve, reject) {
                exec(`mtr --report-wide --report-cycles=2 --timeout=0.3 ${ip}`, function (e, stdout) {
                        if (e) {
                                reject(e);
                                return;
                        }

                        if (stdout.split('\n').length < 10) {
                                resolve(null);
                                return;
                        }

                        resolve(stdout.indexOf('pccwbtn.net') > -1);
                });
        });
}

loadRouteList().then(function (routes) {
        let i = 0;
        let iter = function () {
                if (i == routes.length) return;

                let ip = routes[i].substr(0, routes[i].length - 3);

                execMtrAndMatch(ip).then(function (res) {
                        if (res !== null) {
                                process.stdout.write(routes[i] + '\t\t...\t');
                                process.stdout.write((res === true ? 'Yes' : 'No') + '\n');
                        }

                        i++;
                        iter();
                });
        };

        iter();
});