Using URL’s

Basic URL

	NSURL *url = [NSURL URLWithString:@"http://www.mydomain.com/some_folder/movie.mov"];
	//or
	NSString *urlAddress = @"http://www.google.com";
	NSURL *url = [NSURL URLWithString:urlAddress];

Simple Downloading data from a URL

Synchronous methods which block until they have the result:

NSData *downloadData = [NSData dataWithContentsOfURL:url];

Same synchronous method but with Options and Error

	//----- DOWNLOAD FILE -----
	NSError *error = nil;
	NSURL *url = [NSURL URLWithString:@"http://www.mydomain.com/somefile.xml"];
	NSData *DownloadedData = [NSData dataWithContentsOfURL:url options: NSDataReadingUncached error: &error];
	if (error)
		NSLog(@"Download error: %@",error);

Authentication

A simple method of including the username and password in the URL

	@"http://username:[email protected]/somefile"

Providing credentials before accessing the URL

	NSURLCredential *credential = [[NSURLCredential alloc]
								   initWithUser:@"root"
								   password:@"12345"
								   persistence: NSURLCredentialPersistenceForSession];
	NSURLProtectionSpace *protectionSpace = [[NSURLProtectionSpace alloc]
											 initWithHost:@"192.168.0.131"
											 port:80
											 protocol:@"http"
											 realm:nil
											 authenticationMethod:NSURLAuthenticationMethodDefault];

	[[NSURLCredentialStorage sharedCredentialStorage] setDefaultCredential:credential
														forProtectionSpace:protectionSpace];
	[protectionSpace release];
	[credential release];