跪求指点，C#聊天p2p，不知道 哪出问题？感激不尽

Question

在form1里new出一个form2实现简单的聊天或者开两个form1程序聊天，老是提示说目标计算机拒绝，无法连接，求帮助啊！ 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.Net.Sockets;using System.Threading;using System.IO;namespace WindowsFormsApplication9{ public partial class Form1 : Form { private TcpClient tclient; // public Form2 Form2; private Thread f1,f2; public Form1() { InitializeComponent(); Form2 fm2 = new Form2(); fm2.Show(); /*f3 = new Thread(new ThreadStart()); f4 = new Thread(new ThreadStart());*/ } private void Form1_Load(object sender, EventArgs e) { button2.Click += new EventHandler(button2_Click); f1 = new Thread(new ThreadStart(server)); f1.Start(); } private void server() { TcpListener tlisten = new TcpListener(new IPEndPoint(IPAddress.Any,80)); tlisten.Start(); MessageBox.Show("start"); while (/*f1.IsAlive*/true) { tclient = tlisten.AcceptTcpClient(); f2 = new Thread(new ThreadStart(receiving)); f2.Start(); tlisten.Stop(); } } private void receiving() { MessageBox.Show("accept"); NetworkStream networks = tclient.GetStream(); try { Byte[] receviebytes = new byte[1001]; int i = networks.Read(receviebytes/*设置缓冲去*/ , 0, receviebytes.Length/*从缓冲大小去多少数*/ ); string a = Encoding.ASCII.GetString(receviebytes/*设置缓冲去*/, 0, i/*从缓冲大小去多少数*/ ); MessageBox.Show("yes"); this.textBox2.Text = this.textBox2.Text + a +" \r\n";//换行 } catch (Exception e) { MessageBox.Show(e.ToString ());} tclient.Close(); // listBox1.Tag = it.Address.ToString();/*加括号*/ } private void button2_Click(object sender, EventArgs e) { try { // string host = Dns.GetHostName(); TcpClient tcent = new TcpClient(Dns .GetHostName (),80); /* string host = Dns.GetHostName(); IPHostEntry s = Dns.GetHostByName(host); IPEndPoint it = new IPEndPoint(s.AddressList[0], 80); tcent.Connect(it);*/ NetworkStream networks = tcent.GetStream(); string t = textBox1.Text; Byte[] sendbytes = Encoding.ASCII.GetBytes(t); networks.Write(sendbytes, 0, sendbytes.Length); textBox1.Clear(); tcent.Close(); } //MessageBox.Show(" what"); //tclient.Close(); catch (Exception g) { MessageBox.Show(g.ToString()); } }

Answer 1

你够狠，用80端口。

Answer 2

改成其他也没有用啊，有这么难吗，哎！

Answer 3

你直接阻塞UI线程，不死才怪！