iOS 7-标头HTTP标头请求？

Question

我对iOS 7并不是很熟悉，我正在尝试构建一个需要设置值并将HTTP请求标头发送到我的服务器的应用程序。 但是，看来我的服务器确实收到了我发送的值，这是我从FacebookSDK获得的令牌（我已经在使用FacebookSDK登录，现在我已经掌握了令牌），因为我收到了以下通知：服务器没有将其视为HTTPReques标头。 这是我的代码：

- (void)postToken
{
// Get the token from Facebook
NSString *token = FBSession.activeSession.accessTokenData.accessToken;

// Create the server name
NSMutableString *server = [[NSMutableString alloc] init];
[server appendString:@"*My server website here*"];

// URL Request and initialization
NSMutableURLRequest *postRequest = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:server]];

[postRequest setValue:token forHTTPHeaderField:@"Token"];

// Set the request's content type
[postRequest setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
[postRequest setValue:token forHTTPHeaderField:@"Token"];

// Designate the request a POST request and specify its body data
[postRequest setHTTPMethod:@"POST"];

// The delegate provides receives notification
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:mutableReq delegate:self];

self.connection = connection;

[self.connection scheduleInRunLoop:[NSRunLoop mainRunLoop] forMode:NSDefaultRunLoopMode];
[self.connection start];

if (self.connection) // if connect successfully
{
    NSLog(@"Connection Success!");
    NSURL *url = [NSURL URLWithString:server]; // Initialize url
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url]; // Initialize request
    NSURLResponse *server_response = [[NSURLResponse alloc] init]; // Initialize response

    self.receivedData = [[NSMutableData alloc] init];
    [self.receivedData appendData:[NSURLConnection sendSynchronousRequest:request returningResponse:&server_response error:nil]]; // Receive data synchronously
    [self connectionDidFinishLoading:self.connection];
}
else
    NSLog(@"Connection Failed!");
}

输出为“连接成功！” 并且输出包含我的令牌（因此我不想在此处发布）以及服务器发出的消息，告诉我未提供令牌，这意味着它可以与服务器通信，但是服务器未将令牌识别为标头HTTP请求。 有人可以帮我吗？ 提前致谢！