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HarryTuttle



Joined: 26 Sep 2003
Posts: 211
Location: Poland
HarryTuttle 18 Oct 2004, 13:03
I usually got a file from www by calling '3 API functions

1: InternetOpen
2: InternetOpenUrl
3: InternetReadFile or ReadFIle(but this one has one parametr more than InternetReadFile)


How to get the size of a remote file.

In oposite to Ftp which has FtpGetFileSize I have no idea what to do with www servers.

How do you know how many bytes the file is long?



P.S. the bigger parametr as a 3th in InternetReadFile gets a bad result.

heyah!

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Post 18 Oct 2004, 13:03
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inskipp



Joined: 23 Jun 2003
Posts: 25
Location: Poland
inskipp 18 Oct 2004, 16:43
You can try the old trick from DOS:
Code:
invoke InternetSetFilePointer,hFile,0,0,FILE_END,0
    

and the return value will be file size
(or -1). Don't forget to set pointer back to FILE_BEGIN if you want to dowload file.
I think you can also use the HttpQueryInfo function, but this will be harder.
Post 18 Oct 2004, 16:43
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gorshing



Joined: 27 Jul 2003
Posts: 72
Location: Okla, US
gorshing 18 Oct 2004, 21:14
Or you could read the RFC and pull the size out of the HTTP Response.

Which I believe is .... http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.13

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Post 18 Oct 2004, 21:14
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