This week's book giveaway is in the Android forum.
We're giving away four copies of Head First Android and have Dawn & David Griffiths on-line!
See this thread for details.
The moose likes Tomcat and the fly likes Is localhost always = ? Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Products » Tomcat
Bookmark "Is localhost always = ?" Watch "Is localhost always = ?" New topic

Is localhost always = ?

Oleksandr Karpus

Joined: Feb 13, 2002
Posts: 10
Hi all
Is localhost always = for Tomcat 4.0?
I did check it on 5 machines.
http://localhost:8080 always brings me "An error has occurred processing the request...
Unable to contact site SERVER
Press 'Refresh' on your browser to try again." is OK.

O.Karpus<br />SCJP2, SCWD
Rick Salsa
Ranch Hand

Joined: Jul 17, 2001
Posts: 173
Open up the Hosts file in C:\Windows in an editor. Add the following line at the bottom of the file: localhost
That should do the trick. You can now use http://localhost:8080
Bruce Jin
Ranch Hand

Joined: Sep 20, 2001
Posts: 671
Can I enter this in the host file? localhost
Then enter in browser?
Just a thought.

We love Java programming. It is contagious, very cool, and lot of fun. - Peter Coad, Java Design

Crazy Bikes created by m-Power
Oleksandr Karpus

Joined: Feb 13, 2002
Posts: 10
Hi rich salsa
I've always had a line " localhost" in my C:\winnt\system\drivers32\etc\hosts.
So It doesn't work.
Tim Holloway
Saloon Keeper

Joined: Jun 25, 2001
Posts: 16908

You Don't want to remap localhost. This is a "magic" IP address and I don't know what would break but certainly wouldn't care to find out.
On my Linux system, the OS install created a line in the /etc/hosts file tagged with the comment that removing the localhost definition would "cause various programs that require network funcitonality to fail". The Windows equivalent to /etc/hosts is %WINDOWS%\LMHOSTS, but that file is not present by default, so I suspect that the definition for localhost is either hard-coded in the OS or hidden in some sneaky part of the Registry.
There are some OS's where localhost ISN'T defined by default - I believe I've read of Solaris being noted for that. However, it is ALWAYS defined for any Windows 9x/NT (or successor) networked machine.
If you really want to write something tied to your specific machine (as opposed to whatever machine you're running the software on) refer to it by its hostname - which is the machine ID it was given by the LAN administrator (visible in Network Neighborhood/Properties, aka "My Network Places/Properties").
If you enter "http://localhost" or "" in your browser, it will look for a web server running at TCP/IP port 80 on your computer. If you want to access that server from another computer in your LAN and the machine ID is "FRED123", then say "http://FRED123".
Under Linux, IP isn't attached to a physical network device - it uses a special device called the "loopback" device. Windows may be doing something similar for performance reasons.

Customer surveys are for companies who didn't pay proper attention to begin with.
Consider Paul's rocket mass heater.
subject: Is localhost always = ?
It's not a secret anymore!