PAC

proxy.pac

function FindProxyForURL(url, host) {

    var proxy  = "SOCKS5 127.0.0.1:1080; SOCKS 127.0.0.1:1080; DIRECT";
    var black  = "PROXY 127.0.0.1:65535";
    var direct = "DIRECT";

    var PROXY_LIST = [
        "instagram.com",
        "google.com",
        "facebook.com",
        "github.com",
        "httpbin.org",
    ];

    /*
    var BLACK_LIST = [
        "jd.com",
        "taobao.com",
        "dangdang.com",
        "tmall.com",
        "pinduoduo.com"
    ];
    */

    url = url.toLowerCase();
    host = host.toLowerCase();

    if (host == "127.0.0.1") {
        return direct;
    }

    if (isPlainHostName(host)) {
        return direct;
    }

    var ip = dnsResolve(host);
    if (isInNet(ip, "10.0.0.0", "255.0.0.0") || isInNet(ip, "192.168.0.0", "255.255.0.0")) {
        return direct;
    }

    for (i = 0; i < PROXY_LIST.length; i++) {
        domain = '*' + PROXY_LIST[i];
        if (shExpMatch(host, domain)) {
            return proxy;
        }
    }

    /*
    for (i = 0; i < BLACK_LIST.length; i++) {
        domain = '*' + BLACK_LIST[i];
        if (shExpMatch(host, domain)) {
            return black;
        }
    }
    */

    return direct;
}