From: Eric Hodel <drbrain@...7.net>
Date: 2006-12-06T04:59:03+09:00
Subject: Re: Starting XMLRPC server on virtual host returns EADDRNOTAVAIL

On Dec 5, 2006, at 03:50 , Rene Tschirley wrote:
> I tried to start a Ruby XMLRPC server on a linux-based virtual host
> (using OpenVZ).
>
> Here is the code:
>
> $server = {
>   "host" => "my.host.name",
>   "port" => 73726
> }
>
> XMLRPC::Server.new(port=$server['port'],host=$server['host'])
>
> While the code works on a non-virtual host, bind returns EADDRNOTAVAIL
> when the server is started on the virtual host:
>
> [2006-12-05 11:35:24] INFO  WEBrick 1.3.1
> [2006-12-05 11:35:24] INFO  ruby 1.8.5 (2006-08-25) [i486-linux]
> [2006-12-05 11:35:24] WARN  TCPServer Error: Cannot assign requested
> address - bind(2)
> /usr/lib/ruby/1.8/webrick/utils.rb:73:in `initialize': Cannot assign
> requested address - bind(2) (Errno::EADDRNOTAVAIL)
>
> I tried to define the host by giving the numeric address. I checked  
> that
> the host can resolve the hostname. The server can ping the server
> address. The above code is started as superuser. Linux kernel  
> version is
> 2.6.16, OpenVZ patch is version 026test015.

For a WEBrick virtual host you need to pass :DoNotListen => true in  
the configuration options for the vhost WEBrick::HTTPServer:

httpd = WEBrick::HTTPServer.new :DocumentRoot => nil
vhost = WEBrick::HTTPServer.new :DoNotListen => true,
                                 :ServerName => 'vhost.example.com',
                                 :DocumentRoot => nil
httpd.virtual_host vhost


I'm not sure how to do this with XMLRPC::Server, though.

-- 
Eric Hodel - drbrain@segment7.net - http://blog.segment7.net

I LIT YOUR GEM ON FIRE!