TidFTP: Timeout and error translation?

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3 total messages Started by Thomas Blankschein Tue, 10 Oct 2006 15:39

#1840

Author: Thomas Blankschein
Date: Tue, 10 Oct 2006 15:39

27 lines
2083 bytes

Hello,

I use BCB5 with Indy 8.0.22.

I want to implement a simple FTP client into my application to up- and 
download files from and to an inhouse ftp-server.

I use the TidFTP component and I like the idea of blocking mode. This 
prevents me from building something like a state machine.

But I have two problems:

1. How can I implement a timeout functionality? I tested the TidFTP 
component on my home pc with software firewall. If I don't answer the 
"Allow or reject internet connection"-dialog of the firewall software, 
my testprogram waits forever. In real life, if something is blocking the 
connection, I want to wait a number of seconds and then inform the user 
about the problem.

2. Several different exceptions are thrown, if something went wrong. For 
example, if I try to connect to a server which does not exist, I get an 
EidSocketError 'Socket Error # 11004'. This is not a very user-friendly 
information. Is there a way to translate the messages to a more friendly 
text like 'Server does not exist'? Is there a list of error codes?

Thanks,
Thomas

Re: TidFTP: Timeout and error translation?

#1843

Author: Remy Lebeau (TeamB)
Date: Tue, 10 Oct 2006 17:53

30 lines
1979 bytes

"Thomas Blankschein" <thomas@blankschein.de> wrote in message
news:452bbea0@newsgroups.borland.com...

> I use BCB5 with Indy 8.0.22.

That is a very old version of Indy that is no longer supported.  You should
seriously consider upgrading.

> How can I implement a timeout functionality?

Indy 8 did not support that.  You will have to upgrade to Indy 9 for that.

> Several different exceptions are thrown, if something went wrong. For
> example, if I try to connect to a server which does not exist, I get an
> EidSocketError 'Socket Error # 11004'. This is not a very user-friendly
> information. Is there a way to translate the messages to a more friendly
> text like 'Server does not exist'?

WinSock error codes can be passed to the Win32 API FormatMessage() function.
The VCL has a SysErrorMessage() function that wraps FormatMessage().
EIdSocketError has a LastError property that you can pass to
FormatMessage/SysErrorMessage().

> Is there a list of error codes?

You have to look in the WinSock API documentation.


Gambit

Re: TidFTP: Timeout and error translation?

#1857

Author: Thomas Blankschein
Date: Thu, 12 Oct 2006 18:05

14 lines
1395 bytes

Hi Gambit,


> That is a very old version of Indy that is no longer supported.  You should
> seriously consider upgrading.

Same with our BCB5. Things are unsure at the moment.

> The VCL has a SysErrorMessage() function that wraps FormatMessage().

Thanks, that's what I need.


Thomas

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