尝试在Swift中实现Minecraft服务器列表Ping

import Foundation

func pingMinecraftServer(host: String, port: Int) {
    let socket = Socket()
    
    do {
        try socket.connect(to: host, port: port)
        print("Connected to \(host):\(port)")
        
        // 发送握手包
        let handshakePacket = createHandshakePacket(host: host, port: port)
        try socket.write(handshakePacket)
        
        // 发送状态包
        let statusPacket = createStatusPacket()
        try socket.write(statusPacket)
        
        // 读取服务器响应
        let response = try socket.read()
        let responseString = String(data: response, encoding: .utf8)
        print("Server response: \(responseString ?? "")")
        
        // 关闭连接
        socket.close()
    } catch {
        print("Error: \(error)")
    }
}

func createHandshakePacket(host: String, port: Int) -> Data {
    var packetData = Data()
    
    // 协议版本
    packetData.append(0x00) // 协议版本
    packetData.append(0x04) // 47
    
    // 服务器地址
    let hostBytes = Array(host.utf8)
    packetData.append(UInt8(hostBytes.count))
    packetData.append(contentsOf: hostBytes)
    
    // 服务器端口
    packetData.append(UInt16(port >> 8))
    packetData.append(UInt16(port & 0xFF))
    
    // 下面是一些额外的字段，可以根据需要添加
    
    // Next state，1表示状态包
    packetData.append(0x01)
    
    return packetData
}

func createStatusPacket() -> Data {
    var packetData = Data()
    
    // Packet ID
    packetData.append(0x00)
    
    return packetData
}

// 使用示例
pingMinecraftServer(host: "example.com", port: 25565)