UIWebView and authentication challenge unable to authenticate - ios

Question

http://m-qa-www.comixology.net/ this is the url when i am loading it on safari it works great.
but when i load it on uiwebview it does not do anything because of authentication challenge so i added support for authentication it works in for some url but it does not work for this above url.following is the code i am using for it.
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType;
{
[self showNetworkIndicator];
if (!authed && !conectionAlready) {
authed = NO;
conectionAlready=YES;
urlCon=[[NSURLConnection alloc] initWithRequest:request delegate:self];
return YES;
}
return YES;
}
- (void)webViewDidStartLoad:(UIWebView *)webView
{
NSLog(#"webViewDidStartLoad");
[webView stringByEvaluatingJavaScriptFromString:#"window.alert=null;"];
[self showNetworkIndicator];
authed=NO;
}
-(void) webViewDidFinishLoad:(UIWebView *)webView
{
//conectionAlready=NO;
//[iWebView stringByEvaluatingJavaScriptFromString:#"window.alert=null;"];
NSString *currentURL = webView.request.URL.absoluteString;
NSLog(#"current url %#",currentURL);
URLBar.text=currentURL;
if([iWebView canGoBack])
{
[backButton setEnabled:true];
}
else
{
[backButton setEnabled:false];
}
if([iWebView canGoForward])
{
[fwdButton setEnabled:true];
}
else
{
[fwdButton setEnabled:false];
}
[self hideNetworkIndicator];
}
-(void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error
{
NSLog(#"url error ->%#",error.localizedDescription);
[self hideNetworkIndicator];
NSString *errorStr=error.localizedDescription;
if ([errorStr rangeOfString:#"NSURLErrorDomain"].location==NSNotFound) {
UIAlertView *alert=[[UIAlertView alloc] initWithTitle:nil message:#"A server with the specified hostname could not be found." delegate:self cancelButtonTitle:#"Ok" otherButtonTitles:nil, nil];
[alert show];
}
}
-(void) showNetworkIndicator
{
[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];
}
-(void) hideNetworkIndicator
{
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
}
- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge;
{
authed = YES;
authChallenge=challenge;
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Aithentication Required"
message:scRequest.URL.absoluteString
delegate:self cancelButtonTitle:#"Cancel"
otherButtonTitles:#"Log In", nil];
[alert setAlertViewStyle:UIAlertViewStyleLoginAndPasswordInput];
[alert show];
}
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response;
{
[connection cancel];
conectionAlready=NO;
NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response;
if ([response respondsToSelector: # selector (allHeaderFields)]) {
NSDictionary * dictionary = [httpResponse allHeaderFields];
NSLog (# "dictionary =%#", dictionary);
}
if (authed)
{
NSLog(#"remote url returned error %d %#",[httpResponse statusCode],[NSHTTPURLResponse localizedStringForStatusCode:[httpResponse statusCode]]);
NSLog(#"The response is =%#",response);
authed=YES;
NSString *newUrl = [NSString stringWithFormat:#"%#", response.URL];
NSLog(#"newURL%#",newUrl);
scURL =[NSURL URLWithString:newUrl];
scRequest=[NSMutableURLRequest requestWithURL:scURL];
conectionAlready=NO;
[iWebView loadRequest:scRequest];
}
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
[self hideNetworkIndicator];
authed=NO;
conectionAlready=NO;
NSLog(#"oops localizedDescription:%#",error.localizedDescription);
NSLog(#"oops localizedFailureReason:%#",error.localizedFailureReason);
}
- (void) alertView:(UIAlertView *)alert clickedButtonAtIndex:(NSInteger)buttonIndex
{
//NSLog(#"textFieldAtIndex0 %#",[alert textFieldAtIndex:0].text);
//NSLog(#"textFieldAtIndex1 %#",[alert textFieldAtIndex:1].text);
if (buttonIndex==0) {
[[authChallenge sender] cancelAuthenticationChallenge:authChallenge];
}
else
{
[[authChallenge sender] useCredential:[NSURLCredential credentialWithUser:[[alert textFieldAtIndex:0] text] password:[[alert textFieldAtIndex:1] text] persistence:NSURLCredentialPersistenceNone] forAuthenticationChallenge:authChallenge];
}
}
- (BOOL)connectionShouldUseCredentialStorage:(NSURLConnection *)connection;
{
return YES;
}

Answer 1

Remember the webView is not so competent as a native browser. The native browser handles internally many exception which the webView is not at all competent of. I would suggest if you have the code for the link that you are hitting than try traversing the code and find errors for which the webView doesn't load. I encountered the same issue where some of my JS file were non-responsive. There is no other way you can find bugs in a webView,as it provides limited set of delegated to actually traverse. :)