Swift中GCDAsyncUDPSocket getHost的哪些數據類型

Question

我糊塗了。 這是我的代碼：

public func udpSocket(sock: GCDAsyncUdpSocket!, didReceiveData data: NSData!, fromAddress address: NSData!, withFilterContext filterContext: AnyObject!) {
   var send_port : UnsafeMutablePointer<UInt16>
   var hostPtr : AutoreleasingUnsafeMutablePointer<NSString?>

   // This appears to be a class level function - not an individual function attached to the sock variable
   GCDAsyncUdpSocket.getHost(&hostPtr, port: &send_port, fromAddress: address)       
}

這是我的錯誤：

無法使用類型為'（inout AutoreleasingUnsafeMutablePointer，port：inout UnsafeMutablePointer，fromAddress：NSData！）的參數列表調用'getHost'。

這是“原型”

class func getHost(hostPtr: AutoreleasingUnsafeMutablePointer<NSString?>, port portPtr: UnsafeMutablePointer<UInt16>, fromAddress address: NSData!) -> Bool
class func getHost(hostPtr: AutoreleasingUnsafeMutablePointer<NSString?>, port portPtr: UnsafeMutablePointer<UInt16>, family afPtr: UnsafeMutablePointer<Int32>, fromAddress address: NSData!) -> Bool

在我看來，您傳遞了：

AutoreleasingUnsafeMutablePointer<NSString?>

和一個

我以為是UnsafeMutablePointer<UInt16> 。

有什么想法我做錯了嗎？

Answer 1

您必須將變量定義為

var send_port : UInt16 = 0
var hostPtr : NSString? = nil

使用&將變量作為inout參數傳遞給采用相應UnsafeMutablePointer參數的函數。