Connect-ized form processing example with HTTP Basic

form.html

<% if (typeof message !== "undefined") { %>
    <%= message %>
<% } %>
<form method="POST">
    State:
    <input type=text name="state"
        <% if (typeof state !== "undefined") { %>
            value="<%= state %>"
        <% } %>
        size="2" maxlength="2">
    <input type="submit">
</form>

form.js

#!/usr/bin/env node

"use strict";

var fs = require("fs"),
    util = require("util");

var connect = require("connect"),
    _ = require("underscore");

var accounts = {
    "user": "password",
    "admin": "letmein"
};

var app = connect()
   .use(connect.logger())
   .use(connect.query())
   .use(connect.bodyParser())
   .use(connect.cookieParser())
   .use(connect.cookieSession({secret: "s3cr3t"}));

// Anyone can request the favicon
app.use(function(req, res, next) {
    if (req.url !== "/favicon.ico") {
        return next();
    }

    res.writeHead(404);
    res.end();
});

// Only logged-in users past this point
app.use(connect.basicAuth(function(username, password) {
    return accounts[username] === password;
}));

app.use(function(req, res, next) {
    if (req.method !== "POST") {
        return next();
    }

    req.session.state = req.body.state;
    req.session.message = util.format("Thanks, %s resident.", req.body.state);

    res.writeHead(302, {
        "Location": "/",
    });
    res.end();
});

app.use(function(req, res) {
    res.writeHead(200, {
        "Content-Type": "text/html"
    });
    
    fs.readFile("form.html", function(err, content) {
        if (err) {
            throw err;
        }
        
        var str = content.toString(),
            template = _.template(str),
            html = template(req.session);

        res.write(html);
        res.end();
    });
});

app.listen(8080);