NSURL连接在iPad上超时，在iPhone上正常(Yelp AP/OAuth 2.0I)

Question

我使用Yelp Search API基本上只获取搜索查询的业务列表。

这几乎是一个NSURL连接是OAuth，但下面是初始化请求的代码：

 NSURL *URL = [NSURL URLWithString:appDelegate.yelpAdvancedURLString];

OAConsumer *consumer = [[OAConsumer alloc] initWithKey:@"this-is-my-key" secret:@"this-is-my-secret"];
OAToken *token = [[OAToken alloc] initWithKey:@"this-is-my-key" secret:@"this-is-my-secret"];
id<OASignatureProviding, NSObject> provider = [[OAHMAC_SHA1SignatureProvider alloc] init];
NSString *realm = nil;
OAMutableURLRequest *request = [[OAMutableURLRequest alloc] initWithURL:URL
                                                               consumer:consumer
                                                                  token:token
                                                                  realm:realm
                                                      signatureProvider:provider];
[request prepare];
responseData = [[NSMutableData alloc] init];

yelpConnection = [[NSURLConnection alloc] initWithRequest:request delegate:self];

然后在这里：

  - (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
    [responseData setLength:0];
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
    [responseData appendData:data];
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
    NSLog(@"Error: %@, %@", [error localizedDescription], [error localizedFailureReason]);
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle: @"Oops." message: @"Something screwed up. Please search again." delegate: nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
                [alert show];
     [MBProgressHUD hideHUDForView:self.view animated:YES];
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{       
    if (connection == self.yelpConnection) {
        [self setYelpString];
    }
}

当我在iPhone上运行这个程序时，一切都很好。然而，当我在iPad上运行时，连接会超时。以下内容来自

 NSLog(@"Error: %@, %@", [error localizedDescription], [error localizedFailureReason]);
 Error: The request timed out., (null)

此外，如果我使用同步请求，它似乎可以使用以下内容：

 NSData* result = [NSURLConnection sendSynchronousRequest:request  returningResponse:&response error:&error];
NSDictionary* JSON = [NSJSONSerialization
                      JSONObjectWithData:result
                      options:kNilOptions
                      error:&error];

然而，我想避免使用同步，因为它会冻结应用程序。

这个Yelp API是特定的吗？还是我只是做错了什么？提前谢谢，如果有任何帮助，我将不胜感激。

如果有帮助，它会在发送请求后大约10秒超时。

Answer 1

创建这种类型的NSMutableURLRequest：

NSMutableURLRequest*请求=[[NSMutableURL请求分配]initWithURL:[NSURL URLWithString:url]cachePolicy:NSURLRequestReloadIgnoringLocalCacheData超时间隔：240.0]；

Answer 2

我认为最好的方法是在http://oauth.googlecode.com来自

- (id)initWithURL:(NSURL *)aUrl
         consumer:(OAConsumer *)aConsumer
            token:(OAToken *)aToken
            realm:(NSString *)aRealm
signatureProvider:(id<OASignatureProviding, NSObject>)aProvider
{
     if (self = [super initWithURL:aUrl
                       cachePolicy:NSURLRequestReloadIgnoringCacheData
               timeoutInterval:10.0])
{    
       ...
    }
}

至

- (id)initWithURL:(NSURL *)aUrl 
      cachePolicy:(NSURLRequestCachePolicy)cachePolicy 
  timeoutInterval:(NSTimeInterval)timeoutInterval
         consumer:(OAConsumer *)aConsumer
            token:(OAToken *)aToken
            realm:(NSString *)aRealm
 signatureProvider:(id<OASignatureProviding, NSObject>)aProvider
 {
     if (self = [super initWithURL:aUrl
                       cachePolicy:cachePolicy
               timeoutInterval:timeoutInterval])
{    
       ...
    }

然后再次检查连接是否遵守您指定的超时值。