Can I edit an iPad's host file? - ipad

I doubt this is possible without extensive jail-breaking, but is it at all possible to edit the iPad's (or any iOS device's) hosts file?

The previous answer is correct, but if the effect you are looking for is to redirect HTTP traffic for a domain to another IP there is a way.
Since it technically is not answering your question, I have asked and answered the question here:
How can I redirect HTTP requests made from an iPad?

No, you can't change iPad's host file(without jailbreak), but can workaround.
Here is my scenario:
Mac OS X, with IP 192.168.2.1, running a web app
iPad, the device you would like to test the web app
Charles (for Mac), enables HTTP proxy for your iPad
I am going to test the web app running in my Mac via iPad, but I can't access directly to it.
The solution works for me:
Firstly, make sure that your server and iPad are in the same local network.
Then, set up Charles proxy, in the menu "Proxy > Proxy Settings...", fill in Port(mostly 8888) and toggle Enable transparent HTTP proxying.
Setup proxy setting in iPad.
Now you can visit your web app in iPad.
Of course you can use other proxy tools like Squid or Varnish in Linux, or fiddler in Wondows.

No. Apps can only modify files within the documents directory, within their own sandbox. This is for security, and ease of installing/uninstalling. So you could only do this on a jailbroken device.

The easiest way to do this is to run an iPad simulator using XCode and then add an entry in the hosts file (/etc/hosts) on the host system to point to your test site.

I needed the same functionality, and doing jailbreak is no-no. One solution is to host yourself DNS server (MaraDNS), go to your wifi settings in ipad/phone, and add your custom DNS server there.
The whole process took me only 10 minutes, and it works!
1) Download MaraDNS
2) Run mkSecretTxt.exe as administrator
3) Modify mararc file, mine is:
ipv4_bind_addresses = "put your public IP Here"
timestamp_type = 2
random_seed_file = "secret.txt"
csv2 = {}
csv2["Simple.Example.com."] = "example.configuration"
Add file called "example.configuration" into the same folder where run_maradns.bat is.
4) Edit your example.configuration file:
Simple.Example.com. 10.10.13.13 ~
5) Disable all Firewalls (convenience)
6) Run file "run_maradns.bat"
7) There should be no errors.
8) Add your DNS server to list, as shown here: http://www.iphonehacks.com/2014/08/change-dns-iphone-ipad.html
9) Works!

Yes, you can edit the iPad hosts file, but you need to be jailbroken. Once you've done that, download Cydia (app market), and get iFile. The hosts file is located within "/etc/hosts".

I would imagine you could do it by setting up a transparent proxy, using something like charles and re-direct traffic that way

Workarond I use for development purposes:
Create your own proxy server (One option would be: Squid on Linux).
Set your hosts file with your domains.
Set the proxy server on the IPAD/IPHONE and you can use with your hosts.

I know it's been a while this has been posted, but with iOS 7.1, a few things have changed.
So far, if you are developing an App, you MUST have a valid SSL certificate recognized by Apple, otherwise you will get an error message on you iDevice. No more self-signed certificates. See here a list:
http://support.apple.com/kb/ht5012
Additionally, if you are here, it means that you are trying to make you iDevice resolve a name (to your https server), on a test or development environment.
Instead of using squid, which is a great application, you could simply run a very basic DNS server like dnsmasq. It will use your hosts file as a first line of name resolution, so, you can basically fool your iDevice there, saying that www.blah.com is 192.168.10.10.
The configuration file is as simple as 3 to 4 lines, and you can even configure its internal DHCP server if you want.
Here is mine:
listen-address=192.168.10.35
domain-needed
bogus-priv
no-dhcp-interface=eth0
local=/localnet/
Of course you have to configure networking on your iDevice to use that DNS (192.168.10.35 in my case), or just start using DHCP from that server anyway, after properly configured.
Additionally, if dnsmasq cannot resolve the name internally, it uses your regular DNS server (like 8.8.8.8) to resolve it for you. VERY simple, elegant, and solved my problems with iDevice App installation in-house.
By the way, solves many name resolution problems with regular macs (OS X) as well.
Now, my rant: bloody Apple. Making a device safe should not include castrating the operating system or the developers.

If you have the freedom to choose the hostname, then you can just add your host to a dynanmic DNS service, like dyndns.org. Then you can rely on the iPad's normal resolution mechanisms to resolve the address.

You can also make use of a proxy server on your iPhone or iPade via mobile internet (3G) by using a iPhone Mobile proxy generator:
http://iphonesettings.net/mobileproxygenerator.php
Just enter the apn of your carrier (with apn username/password if needed) and the proxy server you want to go through and tap Generate

Problem Restated: Bypassing DNS Resolution
The problem the OP is trying to solve is NOT hacking hosts files on iPads per se, but rather bypassing DNS Resolution of a specific published DNS record by creating a static, local IP:name mapping on their device.
Solution:
A better- and more scalable- way is to create the static IP:Name mapping that you'd create in the hosts file on the device and instead create it on the router and then point your DHCP addressed clients to that router as the primary source of DNS resolution as I document (with annotated screen shots) HERE.
Conclusion:
When testing a new site you need to check the display of it on multiple devices to ensure there's no funky display or usability issues. Bypassing DNS checking using static local IP:Name mappings would require each developer to hack the hosts files for each of their devices and then remember to unwind the changes in all their devices after testing.
And were it even possible to hack an iPad's hosts file as the OP enquired about, in many organizations the Developers IT assets will be locked-down and they won't they have administrative permissions to do such tinkering.
Better to make the static mapping to bypass the published DNS record in the router and then you can delete it in one place after testing is completed.

You need access to /private/etc/ so, no. you cant.

Best Answer: Simply add http or https in your browser, the IP address, colon and port number. Example: https://123.23.145.67:80

Related

Is it possible to share my localhost with someone on a different network?

I am working with a designer and I'd like them to have access to the interactions I've implemented on the site we're working on. However this time, I have 2 issues. My localhost is configured to a subdomain:
http://store.teststore:3000/ and we're on different networks. Is there anyway to work around this?
ngrok should work for you. Download and install it following these instructions here: https://ngrok.com/download. Documentation on how it is used can be found here https://ngrok.com/docs. Once installed running the below command should work for you (depending on the hosting environment):
ngrok http -host-header=rewrite store.teststore:3000
You will need to give the URL generated by ngrok and displayed in the cmd prompt to the designer.
Update: Handling absolute redirects
Based on your comment it sounds like, after login, your site does an absolute redirect (the full URL is specified). If it is possible I would change your code to do a relative redirect where the domain is omitted. You could also make your root domain configurable in the absolute redirect and configure it to be the ngrok domain provided for now. Lastly, you could attempt to configure your DNS with a CNAME record following ngroks Tunnels to custom domains documentation. This last option, however, requires a paid for ngrok subscription.
Install ngrok if you haven't yet and CD into your project directory and invoke ngrok. Note Your application must be running locally on the same port number ngrok will be running.

Should iOS Universal Links work over custom ports?

I am trying to get iOS Universal Links to work for https://my-domain.com:4443 (i.e. over SSL, but with a custom port number; not the conventional 443 port), but it isn't working.
I'm pretty confident I didn't do anything wrong, since my initial setup worked fine over port 443, and I simply changed the server port to 4443 to test the idea. In fact, I also added support for applinks:my-domain.com:4443 in my Xcode project (I tried both with and without the port, without any luck).
I am asking the question, because I couldn't find anything on the subject in the official documentation.
This is expected behavior. There is nothing in the official documentation about supporting non-standard ports because non-standard ports aren't supported.
The only entitlement value allowed by iOS is a valid, bare domain (applinks:my-domain.com), which iOS will then use to check for an AASA file over SSL using the standard HTTPS port. In other words, when iOS queries either https://my-domain.com/apple-app-site-association or https://my-domain.com/.well-known/apple-app-site-association, it needs to find your AASA file without any redirects.

On local development with Wordpress on iOS, resources fail to load

Have been developing a Wordpress theme using MAMP (localhost:81), and I am now testing some responsive parts on iOS (using my IP (192.168.1.15:81).
Some images are hard-coded (i.e. not changeable from the admin), using the following code:
<img src="<?php echo get_template_directory_uri(); ?>/images/brand-id.svg" onerror="this.src=<?php echo get_template_directory_uri(); ?>/images/brand-id.png" alt="Brand Name" />
It displays correctly both on localhost and IP, from desktop, but using the IP on iOS (8.1), it cannot find the resource, because it loads it in this form:
http://localhost:81/alexe.ro/wp/wp-content/themes/brand/images/brand-id.svg
I am using the Relative URL Wordpress plugin, but that seems to only work for loading the css/js/fonts.
Other details: the dynamic images (the ones uploaded from the cms) load perfectly.
How can I get the 'hard-coded' resources to switch between localhost and the IP, if necessary?
Thank you in advance.
The problem isn't related to IOS, it will fail to read the correct path from any machine in the LAN, apart from your dev one.
One of the solution is:
To make WP to always run under http://IP:port rather than http://localhost:port
In your case, it looks like your WP is in a sub directory /wp, then login to admin panel, and go and update as below:
Settings > General > WordPress Address >> http://192.168.1.15:81
Settings > General > Site Address >> http://192.168.1.15:81/wp
It's also recommended to set the dev machine with a static/preserved IP address on the router, so it will always receive the same one.
I also like the solution posted by #asherstoppard Well, you can play around and find which fits you the best.
One more tip: Backup your database first, in case anything bad happened.
Try adding the following to your wp-config.php file.
define('WP_HOME','192.168.1.15:81');
define('WP_SITEURL','192.168.1.15:81');
Your site_url() will be set to localhost:81 and as such will be attempting to access localhost on your device through get_template_directory_uri().

Need help with multiple URL setup on local CF9/Jrun install

I am running the ColdFusion 9 Developer edition on my local Windows XP machine. I've installed it with the embedded web server, which I believe is JRun.
Right now, I can only access web pages at 127.0.0.1:8500/whatever - with all of my apps being placed within separate directories, i.e.: 127.0.0.1:8500/app1, 127.0.0.1:8500/app2, etc.
I want to set it up so that I can access each app at: app1.mylocalserver.com, app2.mylocalserver.com, etc.
I have edited the hosts file so that these domains will be routed to my local machine. But how do I get CF9/Jrun to recognize these urls and handle them correctly? I have been playing with the WEB-INF/jrun-web.xml file but that seems to handle virtual file mappings only.
Thanks in advance for any help!
Gary
I wouldn't suggest using the built in web server. Can't you install Apache or use IIS?
if you changed it so those names are directed to your IP, shouldn't you just be able to go into site management and reference it there?
I use the built in one as well (for CF 9 on XP) and so far i haven't had an issue with it (been using it this way for over a year)
I have no idea to configure multiple URL. In IIS, it's simple to way configure multiple URL with different ports or binding different IP address.

JavaFX url-proxy?

My computer is running behind proxy. I want to access url from JavaFX. for example say i want to show image from a url. But i haven't seen anyway to provide proxy settings for the connection(?). Please if someone can tell me how to do things in such situation?
Thanks
As link in accepted answer doesn't work anymore I'm adding proxy setting code here:
System.setProperty("http.proxyHost", "myproxyhost");
System.setProperty("http.proxyPort", "80");
By default, JavaFX will automatically use your Operating Systems proxy settings, this is controlled via the Java Preferences or Java Control panel icons on your Mac or PC.
You can also set, within Java, the proxy environment variables, but I haven't tried this.
If you are trying to request an external resource from an unsigned application, Java may prompt you (the user) for permission when it runs.
Setting proxy in Java/FX

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