Re: [twsocket] Is there a way to download a file in threads?

[Fastream Technologies]

Also he needs to set ftpNoAutoResume flag from options. When multiple files 
are used, I had to modify the ICS source code for one line since normally 
TFtpClient wants to seek the local file to the same offset as the remote 
ResumeAt and resumeAt is from the beginning of the entire file whereas the 
local seek should be from the beginning of the segment.

I worked on this yesterday and I know what I am talking about. ;)
Best Regards,
SZ
----- Original Message ----- 
From: "Dan" <[EMAIL PROTECTED]>
To: "ICS support mailing" <twsocket@elists.org>
Sent: Wednesday, April 13, 2005 3:27 PM
Subject: Re: [twsocket] Is there a way to download a file in threads?


I would do it by writing to temporary files.  The reason is because when 
you start writing to an offset in a new file, the write call will block for 
a long time while Windows zeroes/randomizes the earlier bytes so that you 
cant read someone elses file that was previously in the same place on the 
disk. I did a BitTorrent client where it writes pieces randomly into the 
file and the whole application would lock up when it first starts writing 
to the end of the file because of this blocking.
As for how to retrieve pieces of the file, just do a REST to set your 
starting offset, and in your progress event or whatever you use, check if 
you have received enough data from that connection and close the data 
socket it if you have (you might receive slightly more than you wanted for 
that connection but who cares).

Dan
----- Original Message ----- 
From: "Moacir Flávio Gonçalves" <[EMAIL PROTECTED]>
To: "ICS support mailing" <twsocket@elists.org>
Sent: Wednesday, April 13, 2005 11:40 AM
Subject: Re: [twsocket] Is there a way to download a file in threads?


Well, I'm doing a guess here, thinking that must be a clever way to do 
it, BUT, I think, if you create 1 file with 33% of junk (just set one 
byte at the position), another with 66%, then CONTINUE downloading the 3 
of then until the start of the next (controling with progress)... 
Finally, join in one file. Like I said, only guessing...

Rm 12:2 - "E não vos conformeis com este século, mas transformai-vos pela 
renovação da vossa mente, para que experimenteis qual seja a boa, 
agradável e perfeita vontade de Deus."

----- Original Message ----- 
From: "Nicholas Sherlock" <[EMAIL PROTECTED]>
To: "ICS support mailing" <twsocket@elists.org>
Sent: Wednesday, April 13, 2005 2:46 AM
Subject: Re: [twsocket] Is there a way to download a file in threads?


Francois PIETTE wrote:
Some of You guys know Leechget and downloadmanager like that.
They have an option to download a file in threads.
Can you describe this feature because I don't know those programs.

Multiple connections are made to the server. Each connection downloads a 
separate part of the file and they are reassembled when downloading is 
done. Eg part 1 would be the first 33% of the file, part 2 the 33-66% 
part, and part 4 the 66-100% part.

Cheers,
Nicholas Sherlock
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