using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;
using WIDESEAWCS_DTO.System;

namespace WIDESEAWCS_Tasks
{
    public class TcpClientExample
    {
        public static string Start(string Ip, int Prot)
        {
            try
            {
                // 1. 创建 Socket 对象
                Socket clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                // 1.配置超时（核心：避免Receive无限阻塞）
                clientSocket.SendTimeout = 3000; // 连接超时3秒
                clientSocket.ReceiveTimeout = 3000; // 连接超时3秒
                // 2. 连接服务器（IP 为服务器的 IP，端口与服务器一致）
                IPAddress serverIp = IPAddress.Parse(Ip); // 本地测试用 127.0.0.1，实际替换为服务器 IP
                IPEndPoint serverEndPoint = new IPEndPoint(serverIp, Prot);
                clientSocket.Connect(serverEndPoint);
                //Console.WriteLine("已成功连接到服务器");

                // 将字符串转换为字节数组并发送
                byte[] sendBuffer = Encoding.UTF8.GetBytes("start");
                clientSocket.Send(sendBuffer);
                // 接收服务器回复
                byte[] recvBuffer = new byte[1024];
                int recvLen = clientSocket.Receive(recvBuffer);
                string recvMsg = Encoding.UTF8.GetString(recvBuffer, 0, recvLen);
                //Console.WriteLine($"收到服务器回复：{recvMsg}");

                // 4. 关闭连接
                clientSocket.Shutdown(SocketShutdown.Both);
                clientSocket.Close();
                //Console.WriteLine("已断开与服务器的连接");

                return recvMsg;
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
                return "";
            }
        }
    }
}