说明: TcpClient 链接是一个比较安全稳定的链接，作为聊天或者是数据稳定传输，是比较合适的，下面的代码测试过，如果你吧他放在公网服务器上，也是可以用的
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Threading;
using System.IO;
using System.Net.Sockets;
using System.Text.RegularExpressions; namespace ChatsTolls
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
bool b=true;
private Thread td;
private TcpListener listenter;
private NetworkStream ns;
private StreamWriter sw;
private StreamReader sr;
private Socket socket;
private TcpClient client; private void Form1_Load(object sender, EventArgs e)
{ }
private void Run()
{
b = false;
while (true)
{
try
{
socket = listenter.AcceptSocket();
}
catch (Exception)
{
return;
}
label1.Text = "已经连接";
ns = new NetworkStream(socket);
sr = new StreamReader(ns); //读取信息
sw = new StreamWriter(ns); //写入信息 ClosingFrom();
} }
private void button1_Click(object sender, EventArgs e)
{
if (sw != null && txtWrite.Text != "")
{
if (b)
{
sw.WriteLine("ci说:" + txtWrite.Text.Trim());
sw.Flush();
lisAdd.Items.Add("我说:" + txtWrite.Text.Trim());
txtWrite.Clear();
}
else
{
sw.WriteLine("zhu说:" + txtWrite.Text.Trim());
sw.Flush();
lisAdd.Items.Add("我说:" + txtWrite.Text.Trim());
txtWrite.Clear();
}
} }
private void ClosingFrom()
{
try
{
while ( == )
{
string line = null;
if ((line = sr.ReadLine()) != null)
{
lisAdd.Items.Add(line);
}
else
{
label1.Text = "已经断开";
break;
}
}
}
catch (Exception ex)
{ label1.Text = "";
}
finally
{
if (td.ThreadState == ThreadState.Running)
{
sr.Close();
sw.Close();
ns.Close();
if (!b)
{
socket.Close();
}
else
{
client.Close();
}
listenter.Stop(); sw = null;
td.Abort();
}
}
} private void btnGet_Click(object sender, EventArgs e)
{
if (td != null)
{
if (td.ThreadState == ThreadState.Running)
{
sr.Close();
sw.Close();
ns.Close();
if (!b)
{
socket.Close();
}
else
{
client.Close();
}
listenter.Stop();
sw = null;
td.Abort();
}
}
this.Close();
} private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
if (td != null)
{
if (td.ThreadState == ThreadState.Running)
{
sr.Close();
sw.Close();
ns.Close();
if (!b)
{
socket.Close();
}
else
{
client.Close();
}
listenter.Stop();
sw = null;
td.Abort();
}
}
} private void button1_Click_1(object sender, EventArgs e)
{
if (btnZ.Text =="连 接")
{
if (string.IsNullOrEmpty(txtPort.Text))
{
MessageBox.Show("请输入端口号");
txtPort.Focus();
return;
} //判断端口号
if (string.IsNullOrEmpty(txtIp.Text))
{
MessageBox.Show("请输入Ip");
txtIp.Focus();
return;
}
b = true;
int j = int.Parse(txtPort.Text.Trim());
string ip = txtIp.Text.Trim();
//w外网上不能用Dns
//IPHostEntry ipHost = Dns.GetHostEntry(ip);
try
{ client = new TcpClient();
client.Connect(IPAddress.Parse(ip), j);
ns = this.client.GetStream();
sr = new StreamReader(ns);
sw = new StreamWriter(ns);
td = new Thread(new ThreadStart(Runs));
td.IsBackground = true;
td.Start();
label1.Text = "已经连接";
btnZ.Text = "断开连接";
btnX.Enabled = false;
}
catch (Exception ex)
{ label1.Text = "未找到网络";
}
}
else
{
if (td != null)
{ try
{
sr.Close();
sw.Close();
ns.Close();
if (!b)
{
socket.Close();
}
else
{
client.Close();
}
sw = null;
td.Abort();
}
catch (Exception)
{ } } btnX.Enabled = true;
btnZ.Text = "连 接";
label1.Text = "";
}
}
private void Runs()
{
ClosingFrom();
} private void button2_Click(object sender, EventArgs e)
{
if (btnX.Text == "监 听")
{
if (string.IsNullOrEmpty(txtPort.Text))
{
MessageBox.Show("请输入端口号");
txtPort.Focus();
return;
} //判断端口号的方法
b = false;
int j = int.Parse(txtPort.Text.Trim());
Control.CheckForIllegalCrossThreadCalls = false;
listenter = new TcpListener(j); //监听实例化 并写入需要监听的端口
listenter.Start(); //开始监听
td = new Thread(new ThreadStart(Run)); //定义线程进行监听
td.IsBackground = true;
td.Start(); //线程启动
btnX.Text = "取消监听";
btnZ.Enabled = false;
labJ.Text = "正在监听...";
}
else
{ try
{
listenter.Stop();
td.Abort();
}
catch (Exception)
{ }
btnZ.Enabled = true;
btnX.Text = "监 听";
labJ.Text = "";
}
}
}
}
界面：
首先应在服务器上打开 输入端口号并监听
然后本地输入服务Ip 和端口 点击链接 就可以了
写的比较急，就不多说了