iPhone - SSL connection - iphone

Question

What is the best starting point to learn connecting to ssl web services by iphone?
Until now i did some basic connections over http via SOAP etc. but i have no experience on https. Any good sources, tutorials, starting references, "use nsurl...class"s are appreciated

Answer 1

NSURLConnection works by default with SSL and can access https sites. Issues may appear regarding letting user trust SSL certificates, here's a discussion on this that I've found to be interesting.

Answer 2

i'm posting a sample https client. it ignores if server certificate is not valid.
the server has a webget method with uritemplate=username({usercode})/password({passcode})
you can use CharlesProxy to check your outgoing message
#import "Hello_SOAPViewController.h"
#interface NSURLRequest (withHttpsCertificates)
+ (BOOL)allowsAnyHTTPSCertificateForHost:(NSString*)host;
+ (void)setAllowsAnyHTTPSCertificate:(BOOL)allow forHost:(NSString*)host;
#end
#implementation Hello_SOAPViewController
NSMutableData *webData;
- (void)viewDidLoad {
//////////////////////////////////////////////////
//Web Service Call
//////////////////////////////////////////////////
NSURL *url = [NSURL URLWithString:#"https://192.168.1.105/HelloService/Service.svc/username(user)/password(xxx)"];
NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:60.0];
[NSURLRequest setAllowsAnyHTTPSCertificate:YES forHost:[url host]];
[theRequest addValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[theRequest setHTTPMethod:#"GET"];
NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
if(theConnection) {
webData = [[NSMutableData data] retain];
}
else {
NSLog(#"theConnection is NULL");
}
}
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
[webData setLength: 0];
}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
[webData appendData:data];
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
NSLog(#"ERROR with theConnection:%#",[error description]);
if ([error code] == -1001 ){//isEqualToString:#"timed out"]) {
UIAlertView *alertView = [[[UIAlertView alloc] initWithTitle:#"Connection Error" message:#"Server Unresponsive" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil] autorelease];
[alertView show];
}else{
UIAlertView *alertView = [[[UIAlertView alloc] initWithTitle:#"Connection Error" message:#"Check your internet connection " delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil] autorelease];
[alertView show];
}
[connection release];
[webData release];
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSLog(#"DONE. Received Bytes: %d", [webData length]);
///////////////////////
//Process Your Data here:
///////////////////////
[connection release];
[webData release];
}
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
- (void)viewDidUnload {
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)dealloc {
[super dealloc];
}

Answer 3

Check out ASIHTTPRequest. It is very stable, non-leaky, easy-to-use and includes a bunch of goodies like download file resuming, progress bar support etc… It also has authentication support