我有以下步骤在OAuth过程完成：
1）请求令牌
2）授权令牌
3）接收的PIN号码
OAuth访问令牌请求失败（NSErrorFailingURLStringKey）
什么我不能无法开始工作就是使用我收到的PIN码获取访问令牌。它总是击中我的accessTokenTicket:didFailWithError选择器。
这里有一个是越来越传递给它的URL：
http://www.formspring.me/oauth/access_token?oauth_token=TOKEN_KEY_HERE&oauth_verifier=PIN_HERE
这里是一个的被调用的代码：
- (void)successfulAuthorizationWithPin:(NSString *)pin {
NSLog(@"successfulAuthorizationWithPin:%@", pin);<br>
OAMutableURLRequest *request;<br>
OADataFetcher *fetcher;
NSURL *url = [NSURL URLWithString:kOAuthAccessTokenURL];
request = [[[OAMutableURLRequest alloc] initWithURL:url
consumer:self.consumer
token:self.accessToken
realm:nil
signatureProvider:nil] autorelease];
OARequestParameter *p0 = [[OARequestParameter alloc] initWithName:@"oauth_token" value:self.accessToken.key];
OARequestParameter *p1 = [[OARequestParameter alloc] initWithName:@"oauth_verifier"
value:pin];
NSArray *params = [NSArray arrayWithObjects:p0, p1, nil];
[request setParameters:params];
[request prepare];
NSLog(@"%@", request.URL);
fetcher = [[[OADataFetcher alloc] init] autorelease];
[fetcher fetchDataWithRequest:request
delegate:self
didFinishSelector:@selector(accessTokenTicket:didFinishWithData:)
didFailSelector:@selector(accessTokenTicket:didFailWithError:)];
[p0 release];
[p1 release];
}
而且didFail方法（只是错误的NSLog）产生这个错误：
Error Domain=NSURLErrorDomain Code=-1012 "The operation couldn’t be completed. (NSURLErrorDomain error -1012.)" UserInfo=0x6160c20 {NSErrorFailingURLKey=http://www.formspring.me/oauth/access_token?oauth_token=TOKEN_KEY_HERE&oauth_verifier=PIN_HERE, NSErrorFailingURLStringKey=http://www.formspring.me/oauth/access_token?oauth_token=TOKEN_KEY_HERE&oauth_verifier=PIN_HERE, NSUnderlyingError=0x61321f0 "The operation couldn’t be completed. (kCFErrorDomainCFNetwork error -1012.)"}
我的网址格式不对，或提供的参数错误或不够？
谢谢！
John