Socket远程控制客户端

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using System.IO;
using System.Threading;

namespace WinXPClient
{
public partial class MainForm : Form
{
private TcpClient tcpClient;
private NetworkStream netStream;
private Thread thread;
//private string control = "000000";

public MainForm()
{
InitializeComponent();
}
/// <summary>
/// 开启连接
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnStart_Click(object sender, EventArgs e)
{
try
{
if (this.txtIPAddress.Text == "" || this.txtIPAddress.Text == null || this.txtPort.Text == "" || this.txtPort.Text == null)
{
MessageBox.Show("请先设置地址和端口号");
}
else
{
this.rtbMsg.AppendText("正在请求连接" + this.txtIPAddress.Text + "/r");
tcpClient = new TcpClient(this.txtIPAddress.Text, Convert.ToInt32(this.txtPort.Text));
}
}
catch
{
MessageBox.Show("对方没回应，请输入正确地址和端口");
this.rtbMsg.AppendText("连接失败，请重新连接！"+"/r");
}
}

private void btnLED_Click(object sender, EventArgs e)
{
this.rtbMsg.AppendText("正在执行LED命令"+"/r");
try
{
netStream = tcpClient.GetStream();
if (netStream.CanWrite)
{
string control = "cmdLED";
byte[] by = System.Text.Encoding.ASCII.GetBytes(control.ToCharArray());
netStream.Write(by, 0, by.Length);
netStream.Flush();
thread = new Thread(new ThreadStart(receive));
thread.Start();
//thread.Abort();
}
}
catch (Exception ee)
{
this.rtbMsg.AppendText(ee.Message + "/r");
MessageBox.Show(ee.Message);
}
}

/// <summary>
/// 测试连接
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnTestConnect_Click(object sender, EventArgs e)
{
this.rtbMsg.AppendText("正在测试连接…");
try
{
netStream = tcpClient.GetStream();
if (netStream.CanWrite)
{
string control = "Tesing";
byte[] by = System.Text.Encoding.ASCII.GetBytes(control.ToCharArray());
netStream.Write(by, 0, by.Length);
netStream.Flush();
thread = new Thread(new ThreadStart(receive));
thread.Start();
}
}
catch (Exception ee)
{
this.rtbMsg.AppendText(ee.Message + "/r");
MessageBox.Show(ee.Message);
}
}

//receive函数,反馈服务器的连接与被控制状态.反馈控制码为3位.
public void receive()
{
byte[] bb = new byte[3];
int i = netStream.Read(bb, 0, 3);
//用字符串变量ss表示控制反馈码
string ss = System.Text.Encoding.ASCII.GetString(bb);
//con代表连接成功的服务器反馈码
if (ss == "con")
{
MessageBox.Show("连接成功");
this.rtbMsg.AppendText("连接" + this.txtIPAddress.Text + " 成功。" + "/r");
}
//ctr代表控制成功的服务器反馈码
if (ss == "led")
{
this.rtbMsg.AppendText("控制LED命令执行完毕" + "/r");
//tcpClient.Close();
}
//tcpClient.Close();
}

private void MainForm_Load(object sender, EventArgs e)
{
CheckForIllegalCrossThreadCalls = false;
}

}
}