Does hosts file exist on the iPhone How to change it

Question

I am developing an application that query to the server  In my Mac  I use the hosts file to change the dns to point to a local server within my local area network   Now I need to test it with my iPhone  the problem is that my iPhone does not recognize that server due to the missing configuration for dns   On my Mac or Windows  I simply add  192 168 0 20 http   www google com to the hosts file   Now how do I let my iPhone know the URL  http   www google com

User · Answer

Don t change the DNS on the phone  Instead  connect with wifi to the local network and you are all set   At my office  we have internal servers with internal DNS that are not exposed to the Internet  I just connect with iPhone to the office wifi and can then access them fine   YMMV  but instead of configuring the phone DNS  it feels to me that just setting up local internal DNS and wifi is a cleaner and easier solution

User · Answer

Another option here is to have your iPhone connect via a proxy  Here s an example of how to do it with Fiddler  it s very easy    http   conceptdev blogspot com 2009 01 monitoring-iphone-web-traffic-with html  In that case any dns lookups your iPhone does will use the hosts file of the machine Fiddler is running on  Note  though  that you must use a name that will be resolved via DNS  example local  for instance  will not work  example xyz or example dev will

User · Answer

No  an iPhone application can only change stuff within its own little sandbox   And even there there are things that you can t change on the fly    Your best bet is probably to use the servers IP address rather than hostname  Slightly harder  but not that hard if you just need to resolve a single address  would be to put a DNS server on your Mac and configure your iPhone to use that

User · Answer

This doesn t directly answer your question  but it does solve your problem     What make of router do you have  Your router firmware may allow you to set DNS records for your local network  This is what I do with the Tomato firmware

User · Answer

It might exist  but you cannot change it on a non-jailbreaked iPhone   Assuming that your development webserver is on a Mac  why don t you simply use its Bonjour name  e g  MyMac local   instead of myrealwebserverontheinternet com

User · Answer

Not programming related  but I ll answer anyway  It s in  etc hosts   You can change it with a simple text editor such as nano    Obviously you would need a jailbroken iphone for this

User · Answer

In case anybody else falls onto this page  you can also solve this by using the Ip address in the URL request instead of the domain   NSURL  myURL    NSURL URLWithString   http   10 0 0 2 mypage php      Then you specify the Host manually   NSMutableURLRequest  request    NSMutableURLRequest requestWithURL myURL    request setAllHTTPHeaderFields  NSDictionary dictionaryWithObjectAndKeys   myserver    Host       As far as the server is concerned  it will behave the exact same way as if you had used http   myserver mypage php  except that the iPhone will not have to do a DNS lookup   100  Public API

User · Answer

I just edited my iPhone s  hosts  file successfully  on Jailbroken iOS 4 0     Installed OpenSSH onto iPhone via Cydia Using a SFTP client like FileZilla on my computer  I connected to my iPhone   Address   use your phone s IP address or hostname  eg  simophone local  Username  root Password  alpine  Located the  etc hosts file Made a backup on my computer  in case I want to revert my changes later  Edited the hosts file in a decent text editor  such as Notepad      See here for an explanation of the hosts file  Uploaded the changes  overwriting the hosts file on the iPhone   The phone does cache some webpages and DNS queries  so a reboot or clearing the cache may help   Hope that helps someone   Simon

[iphone] Does hosts file exist on the iPhone? How to change it?

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