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I need to parse a xml file from a password protected URL I tried the following
NSURLCredential *credential = [NSURLCredential credentialWithUser:@"admin" password:@"123456" persistence:NSURLCredentialPersistenceForSession];
NSURLProtectionSpace *protectionSpace = [[NSURLProtectionSpace alloc]
initWithHost:@"xyz.com"
port:80
protocol:@"http"
realm:nil
authenticationMethod:NSURLAuthenticationMethodDefault];
[[NSURLCredentialStorage sharedCredentialStorage] setCredential:credential
forProtectionSpace:protectionSpace];
url = [NSURL URLWithString:urlString];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:@"GET"];
[request setValue:@"application/xml" forHTTPHeaderField:@"Content-Type"];
connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
NSURLResponse *response;
NSError *error;
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse: &response error: &error];
NSString *dataStr=[[NSString alloc]initWithData:returnData encoding:NSUTF8StringEncoding];
NSLog(@"data == %@\n error in connecting == %@",dataStr,error);
I got the following response
data == <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>401 Authorization Required</title>
</head><body>
<h1>Authorization Required</h1>
<p>This server could not verify that you
are authorized to access the document
requested. Either you supplied the wrong
credentials (e.g., bad password), or your
browser doesn't understand how to supply
the credentials required.</p>
<p>Additionally, a 401 Authorization Required
error was encountered while trying to use an ErrorDocument to handle the request.</p>
</body></html>
error in connecting == Error Domain=NSURLErrorDomain Code=-1012 "The operation couldn’t be completed. (NSURLErrorDomain error -1012.)" UserInfo=0x6e51b90 {NSErrorFailingURLKey=http://example.com/api/ID/password/xml/,
Any help is appreciated !
518
In my case the issue was caused by a firewall/proxy requiring a client certificate for all HTTPS calls. I resolved this issue by providing a NSURLProtocol subclass to handle authentication challenges and provide this certificate.
[NSURLProtocol registerClass:self];
//implement these methods
- (void)didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge;
- (void)resolveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge withCredential:(NSURLCredential *)credential;
While using a NSURLRequest to access a server, the delegate methods of NSURLConnection provides a way to be notified when an authentication is challenged.
This below sample will show one approach to handle URLs that asks credentials.
- (void)CallPasswordProtectedWebService
{
NSURL *url = [NSURL URLWithString:@"your url"];
NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:url];
urlConnection = [[NSURLConnection alloc] initWithRequest:urlRequest delegate:self];
}
//when server asks the credentials this event will fire
- (void)connection:(NSURLConnection *)connection
didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
{
if ([challenge previousFailureCount] == 0) {
NSURLCredential *newCredential;
newCredential=[NSURLCredential credentialWithUser:@"username" password:@"password" persistence:NSURLCredentialPersistenceNone];
[[challenge sender] useCredential:newCredential
forAuthenticationChallenge:challenge];
} else {
[[challenge sender] cancelAuthenticationChallenge:challenge];
}
}
//when connection succeeds this event fires
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSLog(@"Successfuly connected ");
}
//when connection fails the below event fires
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
NSLog(@"connection failed");
}
Hope this helps
168
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