从Swift 3调用pcap_loop

Question

我在https://github.com/dfrencham/swiftPCap

尝试此代码

  pcap_loop(pcapSession, numberOfPackets,
        {
            (args: UnsafeMutablePointer<u_char>,
             pkthdr:UnsafePointer<pcap_pkthdr>,
             packet: UnsafePointer<u_char>) ->Void in
                    // lets handle the result using a call to a singleton 
                    // we can keep state this way, and not have to
                    // tool around by passing pointers to UnsafePointers
                    // and dereferencing later
                    let pa = PacketAnalyser.sharedInstance
                    pa.Process()
        },
        nil)

现在是Swift 3，我无法使用以下错误进行编译 无法转换类型'的值（UnsafeMutablePointer，UnsafePointer，UnsafePointer） - ＆gt; Void'到预期的参数类型'pcap_handler！'

不确定如何继续，几乎是一个从Swift引用C代码的新手。我已阅读文档，但没有太多运气。

由于