Re: [Vm-dev] Fwd: [Pharo-project] Show stopper network bug on Windows

Igor Stasenko wrote:

Hello guys, those, who not subscribed to the Pharo list.

I think you should read this: http://code.google.com/p/pharo/issues/detail?id=961

since it seems there are some networking problems with Win32 VM.

None of these are Windows VM issues. The problem referred to above is simply that someone was using a year-old 3.10.2 VM and tried to call IPv6 primitives (the debug log shows that clearly). The IPv6 prims are not available in these old VMs.

The discussion below is similarly confused. The Windows VM does return fully qualified names if your network environment is set up properly. Usually, the domain name is set by DHCP, but you can set it manually in the advanced network settings (on XP it's under network, properties, TCP/IP, advanced, append dns suffixes; Vista will surely differ).

Cheers, - Andreas

---------- Forwarded message ---------- From: Igor Stasenko siguctua@gmail.com Date: 2009/7/22 Subject: Re: [Pharo-project] Show stopper network bug on Windows To: Pharo-project@lists.gforge.inria.fr

2009/7/22 Schwab,Wilhelm K bschwab@anest.ufl.edu:

...

The lack of fully qualified names could easily be a windows stupidity. My Dolphin code for lookups has long been a little complicated: look up this, clear that, do it again, and it always seemed that I was fighting lack of imagination from the general direction of Redmond WA - who would have thought that possible? :) My favorite was win2k from (IIRC) pre-sp3: the only machine one could not find by name was the local host!

Concerning fully qualified host name. Yes. This is a well-known issue of windoze. For instance, my machine returns 'comp' on #localHostName request. Which is nothing more, than a computer name, i assigned in windoze settings.

I didn't assigned my PC to be a part of any (sub)domain, so this is all it can report.

The problems with dns/windoze host naming is comes back to Windows 3.11 era when there was no 'internet' but a local networks and windows used own identification mechanisms and protocols (NetBIOS, NetBEUI) to connect different hosts into a 'workgroup' :)

However, next is getting interesting. I having a following network interfaces on my PC (i have to translate the text, because it prints things in russian) :

(( The engineers at Redmond renamed the well-known unix ifconfig utility to ipconfig :) ))

C:>ipconfig /all

Windows IP protocol settings Host name . . . . . . . . . : comp Primary DNS-suffix . . . . . . : Host type . . . . . . . . . . . . . : unknown IP-forwarding enabled . . . . : no WINS-proxy enabled . . . . . . . : no

VMware Network Adapter VMnet8 - Ethernet adapter:

   DNS-suffix . . :
   IP-address  . . . . . . . . . . . . : 192.168.6.1
   Subnet mask . . . . . . . . . . : 255.255.255.0
   Gateway . . . . . . . . . . :

VMware Network Adapter VMnet1 - Ethernet adapter:

   DNS-suffix . . :
   IP-address  . . . . . . . . . . . . : 192.168.89.1
   Subnet mask . . . . . . . . . . : 255.255.255.0
   Gateway  . . . . . . . . . . :

VirtualBox Host-Only Network - Ethernet adapter:

   DNS-suffix . . :
   IP-address  . . . . . . . . . . . . : 192.168.56.1
   Subnet mask . . . . . . . . . . : 255.255.255.0
   Gateway  . . . . . . . . . . :

Network bridge - Ethernet adapter:

   DNS-suffix . . :
   IP-address  . . . . . . . . . . . . : 192.168.0.3
   Subnet mask . . . . . . . . . . : 255.255.255.0
   Gateway  . . . . . . . . . . : 192.168.0.1

Now, if i run: C:>ping comp

it starts pinging 192.168.56.1 address, which its thinks my extenal/local adapter address, but its obviously not

i would expect that 'comp' should be resolved to 127.0.0.1 address (a loopback adapter) but windows thinks differently :)

So, imagine i want to create a socket , listening for incoming connections at 'localHostName' address:

NetNameResolver addressForName: NetNameResolver localHostName

it gives me the same result as ping does: 192.168.56.1(192.168.56.1),0(0)

surely, using this address i will never receive any incoming connections.. :)

But what i didn't expected, it also opens a debug console and prints some kind of error about getnameinfo() function (again, translated, because my windoze is localized):

getnameinfo: requested name is allowed and its found in database, but for this name the associated data is missing, which was allowed for it..

But its not producing a primitive failure.

btw, same error shown in concole even if i do:

NetNameResolver addressForName: 'localhost'

i found that the error producing when i printing the instance of SocketAddress (#hostName method)

weird...

Next, nslookup utility of course, unable to resolve 'comp' name:

C:>nslookup Default Server: ns.ip.net.ua Address: 82.193.96.6

...

comp

Server: ns.ip.net.ua Address: 82.193.96.6

*** ns.ip.net.ua can't find comp: Non-existent domain

-- Best regards, Igor Stasenko AKA sig.