Newsgroups : Borland : borland.public.delphi.internet.winsock : 2007 Jan : Re: ICS FTP Client V2.108

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Re: ICS FTP Client V2.108

Subject:Re: ICS FTP Client V2.108
Posted by:"Graham Powell" (gt..@lineone.net)
Date:Sun, 28 Jan 2007 14:55:25

or follow the "support"
> link at ICS website (http://www.overbyte.be).
>
> Contribute to the SSL Effort. Visit http://www.overbyte.be/eng/ssl.html
> --
> francois.piette@overbyte.be
> The author for the freeware multi-tier middleware MidWare
> The author of the freeware Internet Component Suite (ICS)
> http://www.overbyte.be
>
>
> "Graham Powell" <graham@deephaven.co.uk> a écrit dans le message de news:
> 45ba2dd8@newsgroups.borland.com...
>>I have been using this component for years now without any problems
>>connecting to a specific FTP server running locally.
>>
>> My new requirement is to continually poll a directory on a specified FTP
>> server every 3 or 4 seconds that could be anywhere in the world. I have
>> been experimenting with 3 FTP sites and all give the same problem so I am
>> beginning to suspect the ICS FTP client component although I don't rule
>> anything out.
>>
>> The problem I get is that after some period of time (maybe a few minutes)
>> the whole sequence just stops. I have put the Ethereal network sniffer on
>> the monitor what is going on and see the following. The FTP client
>> initiates a LIST command and after a couple of transactions the FTP
>> Server send a 150 Opening Data Connection message. This is normally
>> followed immediately (1 or 2 mS) by the data, but when it goes wrong the
>> data doesn't arrive and after some period of time (approx 150mS) the FTP
>> client sends the final FTP ACK message as if the whole LIST command has
>> completed. Consequently no ResponseDone event is generated.
>>
>> So is this a problem with the FTP client or is the FTP server not sending
>> the data quick enough so the FTP client times out and finishes the
>> transaction without generating an event.
>>
>> Any help much appreciated
>>  Graham

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