So, I figured out that I can use  hostname spoofing on desktop computers (/etc/hosts file) and I always access the site via numeric IP (IPv4 over ethernet) when testing over WLAN on mobile devices.

• The site is rendered in web mode when it is being accessed via textual hostname (localhost, yourpcname)
• The site is rendered in mobile mode when it is being accessed via IPv4 numeric hostname (127.0.0.1, 196.168.200.1)

And,… dadaa,… here is my magical code to test whether hostname is numeric IPv4. I couldn’t find a ready function from Python standard library

import re

ipv4_regex_source = "^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$"
ipv4_regex = re.compile(ipv4_regex_source)

def is_numeric_ipv4(str):
    """

http://answers.oreilly.com/topic/318-how-to-match-ipv4-addresses-with-regular-expressions/

    @param str: Hostname as a string.

    @return: True if the given string is numeric IPv4 address
    """
    # ^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$
    return ipv4_regex.match(str)

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I found this nice library from Denis Laprise. However, it had a bug with fragment extractor and lacked reconstruction possibilies. So I decided to make a new version.

Download urlparse.js version 0.2. thank you

Couple of examples:

var p = new Poly9.URLParser('http://user:password@poly9.com/pathname?arguments=1#fragment');
p.getHost() == 'poly9.com';
p.getProtocol() == 'http';
p.getPathname() == '/pathname';
p.getQuerystring() == 'arguments=1';
p.getFragment() == 'fragment';
p.getUsername() == 'user';
p.getPassword() == 'password';

var p = new Poly9.URLParser("http://localhost:8080/path);

p.setQuerystring("foo=bar");
p.setFragment("anchor");
p.setPort(7070);

var url = p.getURL() // http://localhost:7070/path?foo=bar#anchor