Re: How to download a file from a web site?
Re: How to download a file from a web site?
- Subject: Re: How to download a file from a web site?
- From: Lorenzo Puleo <email@hidden>
- Date: Tue, 01 Apr 2003 15:17:32 +0200
Hi Joar, thank you.
I have already found the CURLHandle at the Apple Developer Site.
Then I went to
http://curlhandle.sourceforge.net/ and download the file.
I supposed it was a Carbon API, so my Project Builder should show it, so I
wasn't able to find it :-)
Anyway, first I want to understand the basic rules using your code, then I
will affoard CURLHandle.
I made some fix to your code, I tell you just in case:
it's URLWithString and not urlWithString
it's addClient and not setClient
NSURL *url = [NSURL URLWithString: @"
http://www.myDomain.com/myFile.sit";];
NSURLHandle *handle = [url URLHandleUsingCache: NO];
[handle flushCachedData]; // I added this
[handle addClient:self];
[handle beginLoadInBackground];
But PB won't compile.
MyObject.m:85: warning: class `MyObject' does not implement the
`NSURLHandleClient' protocol
Also I cannot guess where my file should be downloaded. How should define
the destination?
And to read a file without saving it to the disk?
Yes I am new of this topic.
Best Regards
--
Lorenzo Puleo
email: email@hidden
>
From: j o a r <email@hidden>
>
Date: Tue, 1 Apr 2003 14:30:41 +0200
>
To: Lorenzo Puleo <email@hidden>
>
Subject: Re: How to download a file from a web site?
>
>
>
On Tuesday, Apr 1, 2003, at 14:20 Europe/Stockholm, Lorenzo Puleo wrote:
>
>
> I took a look at the NSURLHandle documentation, and it lists many APIs
>
> but
>
> not the way to use them together. So I need some sample code or to
>
> know the
>
> theory about it. It's always the same story. Apple Documentation is
>
> poor if
>
> you never knew a topic.
>
>
NSURL *url = [NSURL urlWithString: @"http://www.domain.com/file.tgz";];
>
NSURLHandle *handle = [url URLHandleUsingCache: NO];
>
>
[handle setClient: self]; // You need to implement the client methods
>
[handle beginLoadInBackground];
>
>
...then wait for the handle to call the client methods. The beauty of
>
NSURLHandle is that it manages asynchronous downloads for you with
>
minimum fuss.
>
>
> Also, you speak about CURLHandle that I cannot find. More, you say that
>
> CURLHandle can manage the progress indicator automatically. Good.
>
> But what should I use? CURLHandle or NSURLHandle APIs?
>
>
CURLHandle is a subclass to NSURLHandle, so you can use it in place of
>
NSURLHandle (or rather in place of one of the internal subclasses to
>
NSURLHandle that Apple uses - NSURLHandle is a mostly abstract
>
superclass).
>
>
You have to decide for yourself if you should use NSURLHandle or
>
CURLHandle. I use CURLHandle in one of my applications, because I
>
thought I got a memory leak with NSURLHandle. In your case it might be
>
more important that you can have it manage the progress indicator for
>
you. Read the documentation and compare, choose the one that you think
>
fits yor project best.
>
>
> Last, sourceforge has many links. Whis is the right one?
>
>
You can SEARCH for things!
>
>
<http://www.google.com/search?q=CURLHandle>
>
>
...returns the right page as the first item in the search results.
>
>
j o a r
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