srv1

var http = require('http');
var fs = require('fs');
var path = require('path');
var url = require('url');

var port = process.argv[2] || 8888;
var dirs = {};
dirs = [".//png//", ".//jpg//", ".//html//", ".//js//", ".//gif//"];
exts = [".png", ".jpg", ".html", ".js", ".gif"];

var myServer = http.createServer(function (req, res) {
    console.log('request starting:' + req.method + " " + req.url);
    var dirName = path.dirname(req.url).toLowerCase();
    var baseName = path.basename(req.url).toLowerCase();
    var extName = path.extname(req.url).toLowerCase();

    // handling plain files .html/.js
    if (req.method.toLowerCase() === 'get' && (extName === '.html' || extName === '.js')) {
        fs.readFile(FileDirectory + req.url, function (error, content) {
            if (error) {
                res.writeHead(500);
                res.end();
            }
            else {
                res.writeHead(200, { 'Content-Type': 'text/html' });
                res.end(content, 'utf-8');
            }
        });
        return;
    }
    else if (req.method.toLowerCase() === 'get' && (extName === '.jpg' || extName === '.gif' || extName === '.png')) {
        var filepath = "";
        if (exts[extName] !== null) {
            filepath = path.join(dirs[exts.indexOf(extName)], baseName);
            console.log(exts.indexOf(extName));
            console.log(dirs[exts.indexOf(extName)]);
            if (!fs.existsSync(filepath) || fs.statSync(filepath).isDirectory()) {
                console.log('file for request ' + filepath + " not found");
                res.writeHead(404);
                res.end();
                return;
            }


            console.log("sending " + filepath);
            fs.readFile(filepath, function (error, content) {
                if (error) {
                    res.writeHead(500);
                    res.end();
                    console.log("error");
                    return;
                }
                else {
                    //res.writeHead(200, { 'Content-Type': 'application/octet-stream' });
                    //res.write(content);
                    res.setHeader("Content-Disposition", "attachment; filename=" + baseName);
                    res.end(content, 'utf-8');
                    //res.end();
                    console.log("success");
                    return;
                }
            });
        }
        else {
            res.writeHead(404);
            res.end();
        }
    }
    else {
        res.writeHead(404);
        res.end();
    }
});
myServer.listen(parseInt(port, 10));
console.log("Static file server running at\n  => http://localhost:" + port + "/\nCTRL + C to shutdown")