如何使用swift转换字符串到ipv6 addr

Question

我有一个ipv6字符串，如何使用Swift转换为in6_addr

let ipString = "2001:0b28:f23f:f005:0000:0000:0000:000a"

Answer 1

您可以使用inet_pton() 与在C程序中一样：

let ipString = "2001:0b28:f23f:f005:0000:0000:0000:000a"
var addr = in6_addr()
let retval = withUnsafeMutablePointer(&addr) {
    inet_pton(AF_INET6, ipString, UnsafeMutablePointer($0))    
}

if retval == 0 {
    print("Invalid address")
} else if retval == -1 {
    print("Failed:", String.fromCString(strerror(errno)) ?? "\(errno)")
    // For Swift 3, replace the last line by
    // print("Failed:", String(cString: strerror(errno)))
} else {
  //  Success, `addr` contains the result.
}

传递地址需要

withUnsafeMutablePointer() addr变量为inet_pton()。