PureBasic Forums - English

Posted: **Mon Apr 28, 2008 9:33 am**

Does anyone know a simple way to download a webpage over the Net in PureBasic?

I'm looking for something like:

GetWebPage(file, "http://www.somesite.com/page.html")

Basically I just want to get a page - I can do the processing after that.

Many thanks,
Tony

Posted: **Mon Apr 28, 2008 10:03 am**

Code: Select all

ReceiveHTTPFile(URL$, Filename$)

This is in PB 4.20 beta only

Posted: **Mon Apr 28, 2008 10:08 am**

That's exactly what I need

Many thanks - I'll upgrade from 4.10 to 4.20 Beta later today.

Posted: **Mon Apr 28, 2008 11:01 am**

It is not necessary to update to 4.20 Beta for ease of use, because for Windows operating systems the task of downloading the html code of a web page is also only one function call:

URLDownloadToFile_(0, @URL, @DownloadFilename, 0, 0)

A small example:

Code: Select all

URL.S = "http://www.google.com"
DownloadFilename.S = GetTemporaryDirectory() + "Test.htm"

If URLDownloadToFile_(0, @URL, @DownloadFilename, 0, 0) = #S_OK
  MessageRequester("Info", URL + " has been downloaded sucessfully into " + DownloadFilename + "!", #MB_ICONINFORMATION)
Else
  MessageRequester("Error", "The download of " + URL + " failed!", #MB_ICONERROR)
EndIf

Posted: **Mon Apr 28, 2008 11:40 am**

@Shardik
Some AntiVirus programs have problems with URLDownloadToFile_ API

and there some problems with cache and so on. IMHO not the best way.

Posted: **Mon Apr 28, 2008 12:43 pm**

ts-soft wrote:Some AntiVirus programs have problems with URLDownloadToFile_ API

That's unfortunately correct. But have you tested the new ReceiveHTTPFile() function in Exe files of PB 4.20 Beta with AntiVirus programs extensively? May be that they complain too about some function calls?

ts-soft wrote:and there some problems with cache and so on

Do you have some links for me because this would be very important for me and my customers. Fortunately I didn't have had any complaints so far for several programs in production using URLDownloadToFile().

ts-soft wrote:IMHO not the best way.

IMHO not the best way to use a new function of a Beta version in important programs.

Have you taken a look into the bug section? OK, meanwhile Fred has already fixed some of the reported bugs but can you guarantee that there are not other bugs still not found or reported?

I think that many programmers are still waiting for the final version and that some bugs still will be detected after most PureBASIC users have upgraded to the new PB 4.20 final...

Posted: **Mon Apr 28, 2008 1:17 pm**

Shardik wrote:Do you have some links for me because this would be very important for me and my customers. Fortunately I didn't have had any complaints so far for several programs in production using URLDownloadToFile().

The second downloads, only download from the cache, if available, so you
have to clear the cache. For websites is this no problem, but for files
downloaded in this way.

Posted: **Mon Apr 28, 2008 3:30 pm**

@ts-soft,

thank you for bringing into attention the problem with possibly having to clear the cache, although this is quite straightforward:
Simply place DeleteUrlCacheEntry_(URL) before calling URLDownloadToFile(). Examples have already been posted by PB (http://www.purebasic.fr/english/viewtop ... 12&start=1) and Kiffi and teachco (http://www.purebasic.fr/german/viewtopic.php?t=12314).

PureBasic Forums - English

Simple way to get a web page?

Simple way to get a web page?