node/test/simple/test-http-upgrade-client.js

// Verify that the 'upgrade' header causes an 'upgrade' event to be emitted to
// the HTTP client. This test uses a raw TCP server to better control server
// behavior.

common = require("../common");
assert = common.assert

var http = require('http');
var net = require('net');

// Create a TCP server
var srv = net.createServer(function(c) {
    var data = '';
    c.addListener('data', function(d) {
        data += d.toString('utf8');

        c.write('HTTP/1.1 101\r\n');
        c.write('hello: world\r\n');
        c.write('connection: upgrade\r\n');
        c.write('upgrade: websocket\r\n');
        c.write('\r\n');
        c.write('nurtzo');
    });

    c.addListener('end', function() {
        c.end();
    });
});
srv.listen(common.PORT, '127.0.0.1');

var gotUpgrade = false;
var hc = http.createClient(common.PORT, '127.0.0.1');
hc.addListener('upgrade', function(res, socket, upgradeHead) {
    // XXX: This test isn't fantastic, as it assumes that the entire response
    //      from the server will arrive in a single data callback
    assert.equal(upgradeHead, 'nurtzo');

    console.log(res.headers);
    var expectedHeaders = { "hello": "world"
                          , "connection": "upgrade" 
                          , "upgrade": "websocket"
                          };
    assert.deepEqual(expectedHeaders, res.headers);

    socket.end();
    srv.close();

    gotUpgrade = true;
});
hc.request('GET', '/').end();

process.addListener('exit', function() {
    assert.ok(gotUpgrade);
});