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我在我的iOS应用程序中使用ASIHTTPRequest lib来向我的Rails 3 Web应用程序发出RESTful请求.我第一次尝试向我的网络应用程序发出POST请求时看到一个奇怪且有些一致的错误,但是POST请求在第二次尝试时工作正常.确切的错误是......

Error Domain=ASIHTTPRequestErrorDomain Code=1 "A connection failure occurred" UserInfo=0xb513740 {NSUnderlyingError=0xb5135a0 "The operation couldn’t be completed. (kCFErrorDomainCFNetwork error -1005.)", NSLocalizedDescription=A connection failure occurred}

这是我的ASIHTTPRequest代码,用于发出POST请求...

    NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"http://myrails3app.heroku.com/tournaments/%d/register.json", tid]];
    __block ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];
    [request setRequestMethod:@"POST"];
    [request addPostValue:username forKey:@"username"];

    [request setCompletionBlock:^
    {
        NSData *responseData = [request responseData];     
        NSLog(@"Success!");
    }];

    // Set the code to be called when the request fails
    [request setFailedBlock:^
     {
         NSError *error = [request error];
         NSLog(@"Error: %@", [error localizedDescription]);
     }];

    // Start …