Download Large Files

[brian515]

Hi all,

I am trying to download a relatively large file from within my app. However, whenever it doesn't work and when I look in the folder in the iPhone Simulator folder in my Library, all I see is a 4kB file, nothing close to the 10 or 15mB it should be. Here is the code I am using.

	NSURLRequest *theRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:theURL]];
	NSData *theData = [NSURLConnection sendSynchronousRequest:theRequest returningResponse:nil error:nil];
 	NSArray *path = (NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES));
	NSString *theDirectory = [path objectAtIndex:0];
	NSString *theName = [NSString stringWithFormat:@"movie.mov"];
	theDirectory = [theDirectory stringByAppendingPathComponent:movieName];
	[theData writeToFile:theDirectory atomically:YES];

Any help would be appreciated. Thanks!

[zhyla]

I don't know anything about writing files but is atomically:YES the right option here? How could you possibly write a large file atomically?

[brian515]

Originally Posted by zhyla

I don't know anything about writing files but is atomically:YES the right option here? How could you possibly write a large file atomically?

Yea, I don't know if you could do that. I tried writing it non-atomically, but with the same result.

[jtara]

This simplistic approach isn't going to work for large files, because it reads the entire request into memory first.

Haven't done any iPhone network programming, so don't know what alternatives you have to read the data in chunks. But that is what you need to do - read it in chunks, rather than in one big gulp.