Joky

```swift
import Foundation
import CocoaAsyncSocket

class WakeOnLan: NSObject, GCDAsyncUdpSocketDelegate {
var udpSocket: GCDAsyncUdpSocket!

override init() {
super.init()
udpSocket = GCDAsyncUdpSocket(delegate: self, delegateQueue: DispatchQueue.main)
}

func wakeup(macStr: String, ipStr: String, port: UInt16) {
let macBytes = macStr.split(separator: ":").compactMap { UInt8($0, radix: 16) }
guard macBytes.count == 6 else { return }

var packet = Data(repeating: 0xFF, count: 6)
for _ in 0..<16 {
packet.append(contentsOf: macBytes)
}

do {
try udpSocket.enableBroadcast(true)
udpSocket.send(packet, toHost: ipStr, port: port, withTimeout: -1, tag: 0)
} catch {
print("发送数据包时出现了问题: \(error)")
}
}

// GCDAsyncUdpSocketDelegate methods
func udpSocket(_ sock: GCDAsyncUdpSocket, didSendDataWithTag tag: Int) {
print("数据包发送成功")
sock.close() // 发送完毕后关闭套接字
}

func udpSocket(_ sock: GCDAsyncUdpSocket, didNotSendDataWithTag tag: Int, dueToError error: Error?) {
if let error = error {
print("未能发送数据包, 错误: \(error)")
}
sock.close() // 如果发送失败，也关闭套接字
}

func udpSocketDidClose(_ sock: GCDAsyncUdpSocket, withError error: Error?) {
if let error = error {
print("UDP socket 已关闭, 错误: \(error)")
} else {
print("UDP socket 已正常关闭")
}
}
}

// 使用
let wol = WakeOnLan()
wol.wakeup(macStr: "00:30:64:69:F8:A7", ipStr: "192.168.100.255", port: 9)
```

@mrsolo 谢谢您，学过化工才知道，搞化工的难处，也挺后悔转行太晚了，如果大学早些转，现在也不会是这样子，加油

@sivacohan 排水也挺辛苦的，共勉

@queuey 现在着手在写一个 App ，边写边找，想上架之后应该机会能多一点优势

@vwok 谢谢您

@jackisnotspirate 好的，谢谢您的建议，我想试着走一段

@nathanw 谢谢您，我会考虑的

@paradoxs 我是自己工作攒下的钱来培训的，毕业后没跟家里伸手了