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我正在开发一个股票软件，客户端将从服务器接收数据，所以我想使用CFNetwork。在哪里可以找到“网络入门”教程，谢谢
试试这些链接，我希望你能得到你想要的。
http://mobileorchard.com/tutorial-networking-and-bonjour-on-iphone/
http://oreilly.com/iphone/excerpts/iphone-sdk/network-programming.html
http://www.raddonline.com/blogs/geek-journal/iphone-sdk-testing-network-reachability/
转到 xcode => Organizer => Documentation => iOS 4.x Library => Frameworks => CFNetwork 有 2 个编程指南。