Hi

I know the port needs to be opened but I am trying to get my application
to fail gracefully when they have not yet done so. I am going to
attempt a TCP/IP connection to FB before connecting with IBODatabase to
check for firewall presence as I can handle the exception there.

Thanks
Rob

On 17/03/2011 11:36, Helen Borrie wrote:
> At 10:19 AM 17/03/2011, you wrote:
>> Hi
>>
>> When we try to connect to a FB database using a TIBODatabase (v. 4.8.7)
>> where a Firewall is blocking connection the component raises an
>> exception (after a long pause). In Delphi I have trapped the exception
>> and displayed an appropriated error message. However the error seems to
>> propagate through my application in that the exception seems to 'break
>> through' the exception handling and trigger a second exception handler.
>> I have dealt with this and close my application after this but get
>> access violations.
>>
>> I think something in the TIBODatabase component is seriously breaking.
>> is there anything I can do? I am currently investigating testing for a
>> firewall before attempting connection as an alternative.
> Hard to tell what you're asking IBO to do here. If you don't open the Firebird service port in the firewall, what do you expect a user-space application to do? Eating the first TCP blockage error doesn't solve it - at best it just passes the same problem (Connection refused) to the next handler.
>
> Helen
>
>
>
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