[PolyORB-users] IOR specifies wrong IP address

[Wright, Simon J]

Jerome Hugues wrote:

>> Using the echo server, the IOR that it prints out specifies the IP
>> address 10.0.0.254, which is not the address of any actual machine.
> 
> How did you verify that ? Did you use po_catref ? Another tool ?

First of all by gdb :-) and then with omniorb's catior:

tiamat[12]$ catior
'IOR:01504f4c0d00000049444c3a4563686f3a312e30002e494901000000000000003000000
0010102720b00000031302e302e302e323534003132800a200e0000000000000000000001310
10deadc0d415400000000'
Type ID: "IDL:Echo:1.0"
Profiles:
1. IIOP 1.2 10.0.0.254 32818 "........1....."

>> This happens with both 1.0p (GNAT 3.16a1) and 1.1r (GNAT 5.02a1).
>> 
>> The build machine was connected to 10.0.0.0/24 at the time (its
>> address was 10.0.0.7).
> 
> Can you please detail your setup ? In particular, the OS you are
> using. 

Mandrake 8.2, Linux 2.4.18-6mdk #1 Fri Mar 15 02:59:08 CET 2002 i686 unknown

> There may also be some glitches when interacting with the DNS. Can you
> please do the following:
> 
> - ifconfig : to return the list of interfaces on your host

tiamat[15]$ /sbin/ifconfig
eth0      Link encap:Ethernet  HWaddr 00:04:76:50:10:92  
          inet addr:10.8.5.212  Bcast:10.8.7.255  Mask:255.255.252.0
          UP BROADCAST NOTRAILERS RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:140304 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6382 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100 
          RX bytes:17316017 (16.5 Mb)  TX bytes:1092166 (1.0 Mb)
          Interrupt:10 Base address:0xe800 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:439 errors:0 dropped:0 overruns:0 frame:0
          TX packets:439 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:29681 (28.9 Kb)  TX bytes:29681 (28.9 Kb)

vmnet1    Link encap:Ethernet  HWaddr 00:50:56:C0:00:01  
          inet addr:192.168.215.1  Bcast:192.168.215.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:4041 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4834 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

vmnet8    Link encap:Ethernet  HWaddr 00:50:56:C0:00:08  
          inet addr:192.168.213.1  Bcast:192.168.213.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:367 errors:0 dropped:0 overruns:0 frame:0
          TX packets:95 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

> - hostname : to determine its name

tiamat[16]$ hostname
tiamat.pushface.org

> - host <name> : to check the value returned by the resolver.

This returns nothing! but I find in /etc/hosts that I have

10.0.0.254      tiamat.pushface.org

which explains a lot. oops.

I removed the line and got

tiamat[21]$ ./server
Loading configuration from polyorb.conf
No polyorb.conf configuration file.

Execution terminated by unhandled exception
Exception name: GNAT.SOCKETS.HOST_ERROR
Message: Try again
Call stack traceback locations:
0x8219f4f 0x8218daf 0x8093974 0x81cd387 0x81cd48b 0x80a9499 0x80a9581
0x80a96c8 0x81c7ede 0x81f6e16 0x804aab3 0x4003d27e

and the traceback shows

/home/simon/polyorb-1.0p/src/polyorb-transport-sockets.adb:72
/home/simon/polyorb-1.0p/src/polyorb-setup-tcp_access_points.adb:69
/home/simon/polyorb-1.0p/src/giop/polyorb-setup-tcp_access_points-iiop.adb:8
0
/home/simon/polyorb-1.0p/src/polyorb-initialization.adb:290
/home/simon/polyorb-1.0p/src/polyorb-initialization.adb:308
/home/simon/polyorb-1.0p/src/polyorb-initialization.adb:340
/home/simon/polyorb-1.0p/src/corba/corba-orb.adb:420
/home/simon/polyorb-1.0p/examples/corba/echo/server.adb:61
/home/simon/polyorb-1.0p/examples/corba/echo/b~server.adb:594

(I don't suppose that'll come as much of a surprise!)


I've altered /etc/hosts to match the actual IP address of eth0 and now I
have success!
I can see that my hosts configuration needs some attention (a bit tricky
with a laptop).


Thanks for the steer, any further thoughts welcome.


Regards,

-S

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