getting error when retrieving connections using linkedin api in iphone - iphone

Question

I have an application where i am integrating linkedin in my app.I want to fetch the connections of the logged in user.For this i have done the code but it is returning error:
{
"errorCode": 0,
"message": "Unknown authentication scheme",
"requestId": "98TKWP0T23",
"status": 401,
"timestamp": 1355726431107
}
This is the code that i have done:-
(NSMutableArray*) getFriendsList
{
NSString *url1 = [NSString stringWithFormat:#"http://api.linkedin.com/v1/people/id=%#:(connections)?format=application/json",linkedinid];
NSLog(#"%#",url1);
NSURL *url = [NSURL URLWithString:url1];
OAMutableURLRequest *request = [[OAMutableURLRequest alloc]
initWithURL:url
consumer:consumer
token:token
callback:nil
signatureProvider:nil];
[request setValue:#"json" forHTTPHeaderField:#"x-li-format"];
[request setHTTPMethod:#"POST"];
NSError *err;
NSURLResponse *resp;
NSData *response = [NSURLConnection sendSynchronousRequest:request returningResponse:&resp error:&err];
NSMutableArray *arr = [[NSMutableArray alloc] init];
if (response != nil)
{
NSString *stringResponse = [[NSString alloc] initWithData:response encoding:NSUTF8StringEncoding];
SBJSON *parser = [[SBJSON alloc] init];
NSDictionary *linkedin_response = [parser objectWithString:stringResponse error:nil];
}
}
but in the stringresponse it is returning the above mentioned error.

Answer 1

Try this :
- (void)getFriendsList
{
NSURL *url = [NSURL URLWithString:#"http://api.linkedin.com/v1/people/~/connections"];
OAMutableURLRequest *request = [[OAMutableURLRequest alloc] initWithURL:url
consumer:oAuthLoginView.consumer
token:oAuthLoginView.accessToken
callback:nil
signatureProvider:nil];
[request setValue:#"json" forHTTPHeaderField:#"x-li-format"];
OADataFetcher *fetcher = [[OADataFetcher alloc] init];
[fetcher fetchDataWithRequest:request
delegate:self
didFinishSelector:#selector(networkApiCallResult:didFinish:)
didFailSelector:#selector(networkApiCallResult:didFail:)];
}
- (void)networkApiCallResult:(OAServiceTicket *)ticket didFinish:(NSData *)data
{
NSString *responseBody = [[NSString alloc] initWithData:data
encoding:NSUTF8StringEncoding];
NSDictionary *demo = [responseBody objectFromJSONString];
NSMutableArray *connections = [[NSMutableArray alloc] init];
for(int i=0;i<[[demo objectForKey:#"_count"] intValue];i++)
{
NSDictionary *person = [NSString stringWithFormat:#"%# %#",[[[[responseBody objectFromJSONString]
objectForKey:#"values"]
objectAtIndex:i]
objectForKey:#"firstName"],[[[[responseBody objectFromJSONString]
objectForKey:#"values"]
objectAtIndex:i]
objectForKey:#"lastName"]];
NSLog(#"Connection %d : %#",i,[NSString stringWithFormat:#"%# %#",[[[[responseBody objectFromJSONString]
objectForKey:#"values"]
objectAtIndex:i]
objectForKey:#"firstName"],[[[[responseBody objectFromJSONString]
objectForKey:#"values"]
objectAtIndex:i]
objectForKey:#"lastName"]]);
[connections addObject:person];
}
}
- (void)networkApiCallResult:(OAServiceTicket *)ticket didFail:(NSData *)error
{
NSLog(#"%#",[error description]);
}

Answer 2

From what it looks like, you are not passing up the "Username / Password" in the post, and as such you are getting the "Unknown authentication scheme". I am unsure if you would be able to detect in your own app the connections of the logged in user, unless you are storing their credentials inside your app.