Rails - Dec 2005 - Why would Webrick use 0.0.0.0:3000 instead of 127.0.0.1:3000 ?

Someone working through my Rolling with Ruby on Rails tutorial ran into
this. Does anyone know what could cause this? I pasted the text of his post
below.

Curt

I am using Instant Rails which comes with Rails 1.0, WEBrick 1.3.1 and Ruby
1.8.2 and I ran the WEBrick server and it starts on http://0.0.0.0:3000 and
not http://127.0.0.1:3000. However, when I tried to connect to
http://0.0.0.0:3000 using my browser, a dialog pops up telling me that "the
connection was refused". Any suggestions on how to solve this problem?.


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Someone working through my Rolling with Ruby on Rails tutorial is having 
this problem. Does anyone know what could cause it? I pasted the text of 
his message below.

Thanks,
Curt

-- Original Message --
I am using Instant Rails which comes with Rails 1.0, WEBrick 1.3.1 and 
Ruby 1.8.2 and I ran the WEBrick server and it starts on 
http://0.0.0.0:3000 and not http://127.0.0.1:3000. However, when I tried 
to connect to http://0.0.0.0:3000 using my browser, a dialog pops up 
telling me that "the connection was refused". Any suggestions on how
to
solve this problem?.

A guy who was working through my Rolling wit Ruby on Rails tutorial had this
happen and posted it to the articles comments. I''ve never seen this
before... does anyone know what could cause this? I copied his post below.

Curt

Subject: Problems using Instant Rails
Author: juantar

Text of message:
I am using Instant Rails which comes with Rails 1.0, WEBrick 1.3.1 and Ruby
1.8.2 and I ran the WEBrick server and it starts on http://0.0.0.0:3000 and
not http://127.0.0.1:3000. However, when I tried to connect to
http://0.0.0.0:3000 using my browser, a dialog pops up telling me that "the
connection was refused". Any suggestions on how to solve this problem?.

Thank you.

Curt Hibbs wrote:
> Someone working through my Rolling with Ruby on Rails tutorial is having 
> this problem. Does anyone know what could cause it? I pasted the text of 
> his message below.
> 
> Thanks,
> Curt
> 
> -- Original Message --
> I am using Instant Rails which comes with Rails 1.0, WEBrick 1.3.1 and 
> Ruby 1.8.2 and I ran the WEBrick server and it starts on 
> http://0.0.0.0:3000 and not http://127.0.0.1:3000. However, when I tried 
> to connect to http://0.0.0.0:3000 using my browser, a dialog pops up 
> telling me that "the connection was refused". Any suggestions on
how to
> solve this problem?.
I asked Dave Thomas (via the Errata) what the 0.0.0.0 meant when AWDR 
first came out in beta, so he included the answer - it tells the server 
to listen on all the host''s IP addresses.

That doesn''t imply that you can point your browser at 0.0.0.0 -
although
that''s what DHH does in the Rails movie (and it works for me on the
Mac).

On Windows XP, running WEBrick from the Instant Rails command prompt, I 
see the same "The connection was refused..." dialog if I try to browse
http://0.0.0.0:3000, but there''s no problem with browsing 
http://localhost:3000.

Thanks for an excellent package... I just have a problem with, I think, 
interactions between my normal MySQL installation and the Instant Rails 
one. I''ve changed the socket that the Instant Rails MySQL runs on, but 
(I just found out when anwering this post) if I try to run the Cookbook 
application the attempt to connect to MySQL fails with "access
denied".
My normal MySQL setup has a root password.

regards

   Justin

if localhost:3000 doesn''t work, try 127.0.0.1:3000. If that
doesn''t work,
open the hosts file at,
Windows XP	=	C:\WINDOWS\SYSTEM32\DRIVERS\ETC	
Windows 2K	=	C:\WINNT\SYSTEM32\DRIVERS\ETC	
Win 98/ME	=	C:\WINDOWS

and add the following line to the end of the hosts file
(if it''s not there already),

127.0.0.1       localhost



Curt Hibbs wrote:
> Someone working through my Rolling with Ruby on Rails tutorial is having 
> this problem. Does anyone know what could cause it? I pasted the text of 
> his message below.
> 
> Thanks,
> Curt
> 
> -- Original Message --
> I am using Instant Rails which comes with Rails 1.0, WEBrick 1.3.1 and 
> Ruby 1.8.2 and I ran the WEBrick server and it starts on 
> http://0.0.0.0:3000 and not http://127.0.0.1:3000. However, when I tried 
> to connect to http://0.0.0.0:3000 using my browser, a dialog pops up 
> telling me that "the connection was refused". Any suggestions on
how to
> solve this problem?.

It doesn''t really mean it is listening on 0.0.0.0 - this actually  
means that it is listening on any interface on the computer,  
including 127.0.0.1 and any other IP addresses.

Your reader should connect to http://127.0.0.1:3000.

On 17 Dec 2005, at 17:57, Curt Hibbs wrote:
> A guy who was working through my Rolling wit Ruby on Rails tutorial  
> had this
> happen and posted it to the articles comments. I''ve never seen
this
> before... does anyone know what could cause this? I copied his post  
> below.
>
> Curt
>
> Subject: Problems using Instant Rails
> Author: juantar
>
> Text of message:
> I am using Instant Rails which comes with Rails 1.0, WEBrick 1.3.1  
> and Ruby
> 1.8.2 and I ran the WEBrick server and it starts on http:// 
> 0.0.0.0:3000 and
> not http://127.0.0.1:3000. However, when I tried to connect to
> http://0.0.0.0:3000 using my browser, a dialog pops up telling me  
> that "the
> connection was refused". Any suggestions on how to solve this  
> problem?.

Justin Forder wrote:
> Thanks for an excellent package... I just have a problem with, I think, 
> interactions between my normal MySQL installation and the Instant Rails 
> one. I''ve changed the socket that the Instant Rails MySQL runs on,
but
                         ^^^^^^ port
> (I just found out when anwering this post) if I try to run the Cookbook 
> application the attempt to connect to MySQL fails with "access
denied".
> My normal MySQL setup has a root password.
My mistake - needed to change the Cookbook database config to use the 
different port. To run it under WEBrick, I also needed to create a log 
directory.

regards

   Justin