I had no time to investigate the problem below (which doesn't affect my own 
applications). Can someone have a look at it and propose a fix applyed to 
the latest ICS beta available from my website ?

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----- Original Message ----- 
From: "Merijn Terheggen" <[EMAIL PROTECTED]>
To: "ICS support mailing" <twsocket@elists.org>
Sent: Wednesday, September 28, 2005 5:32 PM
Subject: Re: [twsocket] THttpCli and redirected links bug - continued


>I experienced the same RequestDone error and asked about it previously. I
> handled it by checking de StatusCode. On a RequestDone with StatusCode = 
> 0,
> it's not the final one and more will follow. However, I seem to end up 
> with
> clients that never generate a RequestDone anymore... That means clients 
> that
> never finish, which stalls the complete download process.
>
> I hope we can start the discussion again. Thanks.
>
> --Merijn
>
> Btw, I use C++ builder 6 too... Is this a builder-specific bug?
>
> On 9/28/05, Bjørnar Nielsen <[EMAIL PROTECTED]> wrote:
>>
>> First, i have not read the messages you write this follow up to.
>>
>> > This is a follow up. I wanted to report what appears to be a
>> > related issue to the bug in THttpCli when a link is
>> > redirected. It seems that the RequestDone is called twice.
>> > This has already been reported and I've implemented a work
>> > around in my program.
>>
>> If you get data together with the redirection, mabe it is not a bug that
>> you
>> get requestdone twice?
>>
>> > I've discovered another issue in that it doesn't seem that
>> > the RcvdStream is being cleared. For example, when a link is
>> > requested using THttpCli and it is redirected, there can be
>> > garbage at the beginning of RcvdStream.
>> > RcvdStream should only contain the document obtained from the
>> > redirected link and nothing from the original link that
>> > caused the redirection.
>> >
>> > I am using the latest release version and C++Builder 6.
>> >
>> > I have reproduced this problem in my application using this
>> > link provided by a user:
>> > http://net1test.rhmware.com/marketingprimer
>> >
>> > I have worked around this issue by clearing RcvdStream when
>> > the LocationChange event is called using:
>> > if (HttpCli->RcvdStream) {
>> > HttpCli->RcvdStream->Seek(0,soFromBeginning);
>> > }
>>
>> If LocationChange is triggered before you have received all the data from
>> first request,
>> maybe you should clear the stream in requestdone instead,?
>>
>> >
>> > By the way, I hope the above is sufficient to clear the
>> > stream but I'm not sure that it is. If it isn't can anyone
>> > state the correct way to clear/reset a steam? I can't find it
>> > in the documentation.
>>
>> This only sets the position in the stream, in this case to the start of
>> the
>> stream. Then when you receive data, the data is written from the start of
>> the stream, overwriting previous data if there are any. If you use a
>> TMemoryStream, you can use Clear or SetSize, this will also delete old
>> data.
>> You can also delete the stream and make a new stream.
>>
>> Regards Bjørnar
>>
>>
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