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package server;
import js.node.url.URL;
import js.node.Https;
import js.node.Http;
import js.node.Os;
import sys.FileSystem;
class Utils {
public static function ensureDir(path:String):Void {
if (!FileSystem.exists(path)) FileSystem.createDirectory(path);
}
public static function isPortFree(port:Int, callback:(free:Bool)->Void):Void {
final server = Http.createServer();
final timeout = 1000;
var status = false;
server.setTimeout(timeout);
server.once("error", function(err) {
status = false;
server.close();
});
server.once("timeout", function () {
status = false;
trace('Timeout (${timeout}ms) occurred waiting for port $port to be available');
server.close();
});
server.once("listening", function() {
status = true;
server.close();
});
server.once("close", () -> callback(status));
server.listen(port);
}
public static function getGlobalIp(callback:(ip:String)->Void):Void {
function onError(e):Void {
trace("Warning: connection error, server is local.");
callback("127.0.0.1");
}
final url = new URL("https://myexternalip.com/raw");
Https.get({ // this overload for node < v10.9.0
timeout: 5000,
protocol: url.protocol,
host: url.host,
path: url.pathname
}, r -> {
r.setEncoding("utf8");
final data = new StringBuf();
r.on("data", chunk -> data.add(chunk));
r.on("end", _ -> callback(data.toString()));
}).on("error", onError)
.on("timeout", onError);
}
public static function getLocalIp():String {
final ifaces = Os.networkInterfaces();
for (field in Reflect.fields(ifaces)) {
final type = Reflect.field(ifaces, field);
for (ifname in Reflect.fields(type)) {
final iface = Reflect.field(type, ifname);
// skip over internal (i.e. 127.0.0.1) and non-ipv4 addresses
if ('IPv4' != iface.family || iface.internal != false) continue;
// this interface has only one ipv4 address
return iface.address;
}
}
return "127.0.0.1";
}
public static function sortedPush(ids:Array<Int>, id:Int):Void {
for (i => n in ids) {
if (id < n) {
ids.insert(i, id);
return;
}
}
ids.push(id);
}
public static function shuffle<T>(arr:Array<T>):Void {
for (i => a in arr) {
final n = Std.random(arr.length);
final b = arr[n];
arr[i] = b;
arr[n] = a;
}
}
}
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