Re: Redirection packet contains host name instead of IP address

Hi,

I've not tested, but I don't see any reason. if listener includes IP adress instead of host name, I think, it'll return IP address in re-direct packet.

stanov_at_kgt.com.tw (Stano) wrote in message news:<c0960e91.0201030520.4dd2fef_at_posting.google.com>...
> Hi there,
>
> while establishing the connection with a server (Oracle816),
> an Oracle Client sends to and receives packet(s) from a listener.
> There are basically 2 types of connections:
> bequeathed and redirected.
>
> In case of redirected connection, the client sends
> the connection request:
>
> ...
> nscon: doing connect handshake...
> nscon: sending NSPTCN packet
> nspsend: entry
> ...
> nspsend: 230 bytes to transport
> nspsend: packet dump
> nspsend: 00 E6 00 00 01 00 00 00 |........|
> nspsend: 01 36 01 2C 00 00 08 00 |.6.,....|
> nspsend: 7F FF A3 0A 00 00 01 00 |........|
> nspsend: 00 AC 00 3A 00 00 02 00 |...:....|
> nspsend: 01 01 00 00 00 00 00 00 |........|
> nspsend: 00 00 00 00 01 5E 00 00 |.....^..|
> nspsend: 00 0B 00 00 00 00 00 00 |........|
> nspsend: 00 00 28 44 45 53 43 52 |..(DESCR|
> nspsend: 49 50 54 49 4F 4E 3D 28 |IPTION=(|
> nspsend: 41 44 44 52 45 53 53 3D |ADDRESS=|
> nspsend: 28 50 52 4F 54 4F 43 4F |(PROTOCO|
> nspsend: 4C 3D 54 43 50 29 28 48 |L=TCP)(H|
> ...
>
> and the listener replies with a redirection packet:
>
> ...
> nsprecv: reading from transport...
> nttrd: entry
> nttrd: socket 112 had bytes read=58
> nttrd: exit
> nsprecv: 58 bytes from transport
> nsprecv: tlen=58, plen=58, type=5
> nsprecv: packet dump
> nsprecv: 00 3A 00 00 05 00 00 00 |.:......|
> nsprecv: 00 30 28 41 44 44 52 45 |.0(ADDRE|
> nsprecv: 53 53 3D 28 50 52 4F 54 |SS=(PROT|
> nsprecv: 4F 43 4F 4C 3D 74 63 70 |OCOL=tcp|
> nsprecv: 29 28 48 4F 53 54 3D 70 |)(HOST=p|
> nsprecv: 70 74 65 73 74 29 28 50 |ptest)(P|
> nsprecv: 4F 52 54 3D 31 31 37 35 |ORT=1175|
> nsprecv: 29 29 00 00 00 00 00 00 |))......|
> nsprecv: normal exit
> nscon: got NSPTRD packet
> nscon: got 48 bytes connect data
> ...
>
> where the PORT is redirected to the pre-spawn
> server process.
>
> My question is: Is there a way to setup the listener (or Oracle)
> to send back the IP address of the HOST instead of
> the host name (in this case "pptest") in the redirection
> packet (NSPTRD) (using O816)?
>
> I have a problem with connecting to Oracle816. If the listener is setup
> to pre-spawn some server processes and it receives a connection
> request, it replies with a redirection package including
> a host name instead of an IP address. This means that DNS server
> should be adjusted to resolve this name or the clients
> should change local host files. This does not happen when
> no server processes are pre-spawned.
>
> I have searched a lot of resources, but could not find any remarks
> on this problem.
>
> Thank you a lot for sharing any piece of information,
>
> Stano.
Received on Thu Jan 03 2002 - 11:41:06 CST