Apple TLS與Objective-C和Swift的區別

我正在使用Apple的CFNetworking獲取TLS流。我在將Objective-C代碼移植到Swift時遇到了一些麻煩。Apple TLS與Objective-C和Swift的區別

使用完全相同的步驟，它在使用Objective-C時起作用，但在嘗試使用Swift時握手始終失敗。

工作對象 -

- (void)connect() 
{ 
    CFReadStreamRef readStream; 
    CFWriteStreamRef writeStream; 
    CFStreamCreatePairWithSocketToHost(kCFAllocatorDefault, 
             (__bridge CFStringRef)hostAddress, 
             port, 
             &readStream, 
             &writeStream); 

    self.inputStream = (__bridge_transfer NSInputStream *)readStream; 
    self.outputStream = (__bridge_transfer NSOutputStream *)writeStream; 

    [self.inputStream setProperty:NSStreamSocketSecurityLevelNegotiatedSSL 
         forKey:NSStreamSocketSecurityLevelKey]; 
    [self.outputStream setProperty:NSStreamSocketSecurityLevelNegotiatedSSL 
         forKey:NSStreamSocketSecurityLevelKey]; 

    [self.inputStream setDelegate:self]; 
    [self.outputStream setDelegate:self]; 

    [self.inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] 
           forMode:NSDefaultRunLoopMode]; 

    [self.outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] 
           forMode:NSDefaultRunLoopMode]; 

    [self.inputStream open]; 
    [self.outputStream open]; 
}

非工作斯威夫特

func connect() { 
    var readStream: Unmanaged<CFReadStream>? 
    var writeStream: Unmanaged<CFWriteStream>? 

    let host = "some_host" 
    let hostAsCFString = host as NSString 
    CFStreamCreatePairWithSocketToHost(kCFAllocatorDefault, 
             hostAsCFString, 
             1337, 
             &readStream, 
             &writeStream) 

    inputStream = readStream!.takeRetainedValue() 
    outputStream = writeStream!.takeRetainedValue() 

    inputStream!.delegate = self 
    outputStream!.delegate = self 

    inputStream!.setProperty(NSStreamSocketSecurityLevelNegotiatedSSL, 
          forKey: NSStreamSocketSecurityLevelKey) 
    outputStream!.setProperty(NSStreamSocketSecurityLevelNegotiatedSSL, 
           forKey: NSStreamSocketSecurityLevelKey) 

    inputStream!.scheduleInRunLoop(.currentRunLoop(), forMode: NSDefaultRunLoopMode) 
    outputStream!.scheduleInRunLoop(.currentRunLoop(), forMode: NSDefaultRunLoopMode) 

    inputStream!.open() 
    outputStream!.open() 
}

兩者都試圖連接到同一臺服務器和同一端口。

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工作對象 -